JP2008025342A - Automatic determination database system for re-maintenance plan of existing pipe based on evaluation result of state in existing pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic determination database system for a re-maintenance plan of existing pipes that can easily, accurately and efficiently form a re-maintenance plan of the existing pipes without requiring experience, knowledge and skill while eliminating an unnecessary cost, time and labor. <P>SOLUTION: The automatic determination database system for the re-maintenance plan of the existing pipes comprises steps of: selecting the kinds of defects for every joint part, main pipe part and mounting pipe part of the existing pipes, based on a predetermined defect criterion while observing examined image information inside the existing pipes, and scoring the degrees of defects and ranking them according to the scores for screen input; totaling the number of the corresponding existing pipes by ranks for every predetermined item using the defect state input to a screen, to evaluate the state in the existing pipes; and determining whether to use the existing pipes as they are, to renovate them for practical use, or to replace them concerning the re-maintenance plan of the existing pipes, based on the predetermined criterion using the evaluated result, and outputting the determined result to prepare re-maintenance plan data of the existing pipes. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an existing pipe re-maintenance policy automatic determination database system based on an evaluation result of a state in an existing sewer pipe (hereinafter referred to as “existing pipe”).

Conventionally, maintenance of existing pipes has been performed by a method of repairing each of the defective portions individually when a failure occurs. However, at present, it is assumed that existing pipes that have deteriorated after their useful lives have reached a considerable range. For this reason, in the conventional method of individual measures such as maintenance of existing pipes, there is a problem that rapid repair becomes difficult when road depression, odor problems, flood damage, etc. due to old pipes occur at the same time.
And considering the changes in the service life of existing pipes and the fluctuations in the amount of sewage outflows (referred to as “the quantity that flows out from a certain area and enters the pipes”) due to population changes, the maintenance of existing pipes In the route area, repair of a large number of sewer pipes (referring to “replacement of part of the target facility”) and reconstruction (“all or part of the target facility not resulting from expansion of the drainage area, etc.) It is considered necessary to conduct “reconstruction or replacement” (except where applicable).

By the way, when some existing pipes are repaired or renovated in a predetermined route area, the flow rate or flow rate of sewage flowing through the repaired or refurbished sewage pipe (simply referred to as “flowing amount”) changes. The flow rate and flow rate of sewage flowing through existing pipes will also change. In addition, the change in the flow velocity and flow rate may cause adverse effects such as deteriorating the flow of sewage throughout the predetermined route area or shortening the life of other existing pipes. is there.
In addition, depending on the service life of existing pipes in a given route area, if it is possible to replace existing pipes during road pavement work, etc. in the given route area, replace some existing pipes. However, it may be more economical to replace all existing pipes.
For this reason, existing pipes that have passed a predetermined period of time are redeveloped over the entire route area ("reconstruction or replacement of target facilities that have reached the standard useful life during renovation". It may be called “update” or “reconstruction”), and it is necessary to make a redevelopment plan by examining whether or not it is possible.
Conventionally, as a systematic procedure for planning the redevelopment of sewage pipes, for example, there is one described in Non-Patent Document 1.

Hirokazu Yokoyama, “Reconstruction of Sewerage Pipeline”, Riko Books, June 15, 1999, pages 44-45

  The redevelopment plan described in Non-Patent Document 1 confirms the design specifications of the existing pipes, conducts survey surveys and in-pipe investigations on existing pipes, and conducts redevelopment based on verification of the flow capacity of existing pipes. Plans are made with procedures to confirm methods.

As a method for preparing a redevelopment plan for existing pipes, a method based on the premise that all existing pipes in a predetermined route area are replaced with new sewer pipes can be considered.
However, the existing pipes installed in the specified route area are not the same in terms of the original design of the pipes, the flow rate of sewage flowing through the pipes, the flow rate, the pipe gradient, etc. Tubes with different levels of pain, flow ability, etc., differing in necessity for repair / renovation and different levels of required repair / reconstruction.
Therefore, in a redevelopment plan that assumes that all existing pipes in a given route area will be replaced with new sewage pipes, existing pipes that do not need to be repaired or renovated will be replaced. Waste is enormous.

  Therefore, when making a plan for redevelopment of existing pipes, the capacity of each existing pipe (such as the flow rate and flow rate of sewage flowing through the existing pipe) is calculated from the design of the existing pipes that have been designed. The existing pipe is used as it is (hereinafter referred to as “existing pipe use”), and the existing pipe is used after being subjected to rehabilitation processing such as lining a plastic resin such as vinyl chloride in order to reduce the frictional resistance of the inner surface of the pipe ( It is conceivable to use a method of selecting an optimum method from several different redevelopment methods, such as “replacement” and replacing with a new sewer pipe (hereinafter “attachment”).

  However, this method is only calculated based on the design values and measurement values of existing pipes, and does not reflect the actual state of existing pipes (for example, the deterioration state of pipes over time). Absent. For this reason, in this method, the existing pipes that do not actually need to be repaired or renovated are repaired or remodeled, or the existing pipes that need repair or renovation are not repaired or remodeled. If this happens, it will not be possible to redevelop it in an optimal way along the actual conditions of the existing pipes in the specified route area.

As another method for making a plan for redevelopment of existing pipes, a method of actually investigating the state of each existing pipe and determining the contents of redevelopment is conceivable.
In this method, an imaging device such as a TV camera is used to image the inside of each existing pipe, and the investigator observes the captured image of the existing pipe while diagnosing a fault in the pipe and creating a medical chart. The contents of redevelopment are determined for each existing pipe based on the diagnosis results described in the medical record.
According to this method, compared with the method based on the design value, it is possible to carry out redevelopment in accordance with the actual state of the existing pipe.

However, the existing pipes have various causes and symptoms, such as whether or not the pipe is broken, the magnitude of the breakage, the degree of breakage, pipe corrosion, pipe slippage, sagging, and flooding. In order to determine the contents of pipe refurbishment based on comprehensive judgment from image observation, investigators must have many years of experience and intuition. In order to acquire such experience and intuition, considerable skill and knowledge are required, but the absolute number of skilled workers for an enormous number of existing pipes is overwhelmingly small.
For this reason, this method requires an enormous amount of time for an expert to individually determine the sewer pipes and to make a plan for redevelopment of the sewer pipes in the predetermined route area. It becomes a thing.
In addition, in this method, the failure state and redevelopment contents of the existing pipes described in the medical chart and the like are easily affected by the investigator's subjectivity.
Furthermore, since the conditions such as the flow rate of flow to other pipes fluctuate due to the redevelopment of one pipe, the overall redevelopment including pipes that do not require redevelopment at the present time only by the current diagnosis of pipe It is difficult to make a prediction.

  In addition, in both the method of calculating the capacity of each pipe from the design value and the method of capturing the actual pipe situation in an image and judging it individually by an expert, the number of calculation items and check items can be increased more. For example, a plan using a more appropriate redevelopment method can be made. However, the greater the number of calculation items and check items, the greater the work load.

In addition, conventionally, in the method of calculating the capacity of each individual tube from the design value or the method of capturing the actual tube status on an image and individually judging by an expert, individual data is manually printed on paper. It was recorded on the medium.
However, since the number of sewer pipes is enormous, the method of recording the capacity and status of the pipes on paper media requires the necessary data from the paper media when it becomes necessary to conduct a follow-up survey of the sewer pipes after the redevelopment plan. The work to find out becomes complicated. In addition, once a redevelopment plan is established, it may be necessary to change the redevelopment plan criteria due to economic conditions (eg, budget), environmental conditions (change in average flow rate due to population changes), and other changes. . In each case, rewriting the contents written on paper media takes a great deal of labor, and when the calculation items and check items are subdivided, the degree of work load increases further, and subsequent management and prompt follow-up surveys are carried out. It will be very difficult to do.

In this way, in order to make a plan for redevelopment of existing pipes, it is necessary to organize and analyze a great deal of information, and the determination of the redevelopment method is likely to vary depending on the skill and knowledge of the person in charge. .
In addition, the redevelopment planning method described in Non-Patent Document 1 has a systematic processing procedure, but it is a concrete method for reducing the human work load and realizing efficiency in each systematic processing. It has not been proposed for means.
For this reason, conventionally, it has been impossible to make a plan for redevelopment of existing pipes easily, accurately, and efficiently regardless of skill and experience without incurring unnecessary costs.
However, since it is inevitable that a large number of existing pipes that will exceed the service life will appear in the future, it is inevitable that redevelopment of existing pipes will be inevitable, and it is urgent to make an efficient and appropriate redevelopment plan for existing pipes. Is desired.

  The present invention has been made in view of the above problems, and it is possible to easily and accurately restore existing pipes without using unnecessary cost, time and labor, and without requiring experience, knowledge and skill. The purpose is to provide an automatic judgment database system for existing pipe re-maintenance policy based on the results of evaluation of the state of existing pipes through pipe surveys where a maintenance plan can be established.

  In order to achieve the above object, the existing pipe re-restoration policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe inspection according to the present invention is the inspection image information inside the existing pipe captured using the imaging means. While observing, the degree of failure is scored for each type of failure of the existing pipe, and based on the predetermined failure judgment criteria ranked according to the score, the joint portion, main pipe portion and mounting pipe portion of the existing pipe For each stage, select the type of failure, score the degree of failure, rank it according to the score, and enter the screen, and use the failure status in the joint, main pipe, and mounting pipe entered on the screen. Aggregating the number of existing pipes corresponding to each predetermined item by rank and evaluating the state of the existing pipes, and using the evaluation results, the method for redeveloping the existing pipes based on predetermined criteria With regard to the existing pipe, whether to use the existing pipe as it is, use it for further living, or replace the cloth, output the judgment result, and the existing pipe redevelopment policy based on the evaluation result of the state in the existing pipe And a step of creating data.

  Moreover, in the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe inspection of the present invention, the predetermined defect judgment criterion for inputting the screen while observing the investigation image information is The degree of failure is different for each type of existing pipe failure, which is any combination of existing pipe damage, cracks, pipe corrosion, joint misalignment, intrusion water, joined state, blocked state, protruding protruding pipe, and slack meandering. It is preferably scored and ranked according to the score.

  Further, in the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe inspection of the present invention, the evaluation of the state of the existing pipe uses the value input on the screen, For each type of defective existing pipe, the number of existing pipes corresponding to each rank is counted, and the total value is used to calculate the total number of defective types in the main, slack meander, intrusion water, and defects related to installation pipes by rank. It is preferable to count the number of defectives and calculate the defective rate.

  Further, in the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the existing pipe state by the pipe inspection of the present invention, the criteria for the existing pipe redevelopment policy based on the evaluation result of the existing pipe state are: In the evaluation of the condition in the existing pipe, the main pipe is used by calculating the total number of defects in the main pipe, slack meandering, intrusion water, the number of defects by rank calculated for each defect related to the mounting pipe, and the result of the defect rate. Depending on the condition of the combination of the presence / absence of the specified rank and the range of the defect rate for each defect related to the whole defect type, slack meandering, intrusion water, and mounting pipe in It is preferable that it is determined so as to determine whether the existing pipe is used as it is.

  Further, in the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of existing pipes by the pipe investigation of the present invention, the existing pipes in the database in which the existing pipe redevelopment policy data is prepared are re-established. It is preferable that survey image information by the imaging means in the route section of the existing pipe redevelopment policy data is linked to the maintenance policy data and output and displayed.

  In addition, in the automatic determination database system for existing pipes based on the evaluation results of the existing pipe state according to the pipe inspection of the present invention, the existing pipe redevelopment policy data based on the evaluation results of the existing pipe state based on the pipe inspection Based on the above, it is preferable that at least a part of the redevelopment policy data such as the existing pipe use section, the life changing section, and the cloth replacement section in the predetermined route area is printed or displayed in a map and an image format.

  Further, in the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state in the existing pipe by the in-pipe investigation of the present invention, it is preferable that the judgment standard of the redevelopment policy data can be changed by screen input. .

According to the automatic determination database system for existing pipe redevelopment policy based on the evaluation result of the state in the existing pipe by the pipe inspection of the present invention, the operator can make an objective judgment without making subjective judgment based on knowledge, experience and intuition. It is possible to design a high-accuracy redevelopment policy simply by inputting simple items.
For this reason, it is possible to make a plan for redevelopment of existing pipes easily, accurately and efficiently, without wasting costs, time and labor, and without requiring experience, knowledge and skill.

The existing pipe re-restoration policy automatic judgment database system based on the evaluation result of the state of the existing pipe by the pipe inspection of the present invention evaluates the state of the existing pipe while observing the investigation image information inside the existing pipe, and the evaluation result With respect to the redevelopment policy for the existing pipe, it is configured to determine whether the existing pipe is used as it is, used for further living, or replaced.
Hereinafter, an example of a specific configuration and process will be described as an embodiment of the present invention with reference to the drawings.
FIG. 1 is a system schematic configuration diagram showing an existing pipe redevelopment design system including an existing pipe redevelopment policy automatic determination database system based on an evaluation result of an existing pipe state by an internal pipe survey according to an embodiment of the present invention; 2 is a data input correlation diagram of the existing pipe redevelopment design system shown in FIG. 1, and FIG. 3 is a schematic diagram of a data processing flow of the existing pipe redevelopment design system shown in FIG.
The existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the state in the existing pipe by the pipe internal inspection of this embodiment, as shown in FIG. The existing pipe re-repair policy automatic determination database system 100 based on the above, the existing pipe re-repair policy automatic determination database system 200 based on the evaluation result of the state of the existing pipe by the in-pipe investigation according to the present embodiment, and the comprehensive existing pipe The re-maintenance policy automatic determination database system 300 is configured.
Each of the database systems 100, 200, and 300 is configured to include database creation software and database files 101, 201, and 301, respectively, inside the computer. The database system 300 is connected to the database systems 100 and 200 via a line. Note that data transfer between the database system 200 and the database system 300 may be performed via a flexible disk, CD, MD, or the like.
Hereinafter, the existing pipe redevelopment design system equipped with the existing pipe rehabilitation policy automatic judgment database system based on the evaluation result of the existing pipe state by the pipe internal inspection of the present embodiment will be described. Re-repair policy automatic determination database system 100, re-establishment policy automatic determination database system 200 for existing pipes based on the evaluation result of the state of existing pipes by the in-pipe investigation according to the present embodiment, comprehensive re-repair policy automatic determination database for existing pipes The description will be made in the order of the system 300.

First, an existing pipe redevelopment policy automatic determination database system 100 based on the existing pipe capacity evaluation result will be described.
As shown in FIG. 2, the database file 101 of the database system 100 is based on the existing pipe specification data section 110, the existing pipe status, the existing pipe flow capacity evaluation data section 120, and the existing pipe flow capacity evaluation results. And a redevelopment policy data section 130.

The existing pipe specifications data section 110 includes an existing pipe index item for identifying a route section and an existing pipe made up of an upstream manhole number, a downstream manhole number, a district number, a line number, a drainage area, etc. Pipe diameter, pipe type, ground height (upstream), ground height (downstream), pipe bottom height (upstream), pipe bottom height (downstream), slope, extension, extracted from sewer ledger diagram file 140 (designed when laying) And data items such as the pavement configuration extracted from the pavement information file 150 for each route created by the road manager.
Here, the extension is the length of the existing pipe. The pipe types are, for example, rigid pipes such as reinforced concrete fume pipes, vinyl chloride pipes, reinforced plastic pipes, rehabilitation pipes lined with plastic resin such as vinyl chloride to reduce frictional resistance, etc. Are distinguished by symbols such as alphabetic characters.

  The existing pipe status, existing pipe flow capacity evaluation data section 120 calculates the flow velocity / flow rate of sewage flowing through the existing pipe in the route section, and whether or not the calculated value satisfies the reference value or the planned value. Judgment information, minimum covering required for the existing pipe extracted from the sewer ledger diagram file 140 (upstream), the covering (downstream), and the cover according to the pavement configuration and the pipe diameter of the existing pipe It has data items such as determination information for lack of covering that indicates whether or not the covering is satisfied.

Based on the Manning formula, the flow velocity is calculated with a predetermined value (for example, the roughness coefficient of a rigid pipe: 0.013) as a roughness coefficient (referred to as a constant determined by the degree of roughness of the channel wall). ing. The Manning formula is expressed by the following equation (1).
v = (1 / n) R ^2/3 · i ^1/2 (1)
However, n is a roughness coefficient, R is a diameter depth, and i is a gradient. Also, R = A / p (where A is the flow product (“the area occupied by the fluid in the cross section of the flow tube or water channel”), and p is the wet side (“cross section of the flow tube or water channel”). The length of the portion where the fluid and the solid are in contact with each other.
The flow-down amount (referred to as “the amount that can flow in the pipe in a full pipe”) is calculated based on the Manning formula with a predetermined roughness coefficient (for example, the roughness coefficient of a rigid pipe: 0.013). It has become.
The earth cover recorded in the sewer ledger diagram file 140 is set to the earth cover.

And the evaluation result based on the evaluation criteria as shown in the following Table 1 is set in the determination information of the flow velocity, the flow rate, and the earth covering.

Table 1
Evaluation criteria for existing pipe flow capacity, etc.

  When the calculated flow velocity is equal to or higher than a predetermined value (for example, 0.8 m / S), a symbol (for example, “◯” mark) indicating that the flow velocity is satisfied is attached to the flow velocity determination information. In addition, when the calculated flow velocity is lower than the predetermined value (0.8 m / S), a symbol indicating that the flow velocity is not satisfied (for example, “×”) is attached, and the diameter and roughness coefficient of the existing pipe are added. Change the numerical value for (for example, the diameter of the existing pipe minus 10 mm, the roughness coefficient of 0.010) and calculate the flow velocity again. If the calculated flow velocity is equal to or greater than the predetermined value (0.8 m / S), A symbol (“◯” mark) indicating that the flow rate is satisfied is marked with a symbol (“×” mark) indicating that the flow velocity is not satisfied when the value is below a predetermined value (0.8 m / S).

In the flow rate judgment information, when the calculated flow rate is equal to or greater than the flow rate recorded in the flow rate information file 160, a symbol indicating that the planned flow rate is satisfied (for example, “◯” mark) is used. When the amount falls below the outflow amount recorded in the flow rate information file 160, a symbol (for example, “x” mark) indicating that the planned outflow amount is not satisfied is added.
Further, when the calculated flow amount is less than the outflow amount recorded in the flow rate information file 160, the numerical values are changed for the pipe diameter and roughness coefficient of the existing pipe (for example, the pipe diameter of the existing pipe minus 10 mm, the roughness) The flow rate is calculated with a coefficient of 0.010). When the calculated flow rate is equal to or greater than the flow rate recorded in the flow rate information file 160, a symbol (for example, “◯”) indicating that the planned flow rate is satisfied is displayed. When the calculated flow amount falls below the outflow amount recorded in the flow rate information file 160, a symbol (for example, “×” mark) indicating that the planned outflow amount is not satisfied is attached.
Note that the flow velocity, the flow amount, and the determination information thereof are provided separately for the data item at the time of the first determination and the data item at the time of recalculation.
Further, when determining the flow-down amount, a determination may be made with an amount that allows a margin of about 20% from the planned outflow amount of the flow rate information file.

The judgment information for the shortage of the earth cover is the above-mentioned value of the minimum required earth cover that does not satisfy a predetermined value (for example, 1.5 m or more) or is defined according to the values of the pavement configuration and the pipe diameter of the existing pipe. When the value is not satisfied, for example, a value as described below is set.
The minimum required soil cover when the pipe diameter is 250/300 mm in the pavement configuration (L traffic / sidewalk) is 0.8 m, and the value of the soil cover shortage when not exceeding this is “F−1”. In addition, the minimum required covering when the pipe diameter is 250 and 300 mm in the pavement configuration (A / B traffic) is 0.9 m, and the shortage covering value when not exceeding this is “F-2”. In addition, the minimum required covering when the pipe diameter is 250 and 300 mm in the pavement configuration (C traffic) is 1.1 m, and the shortage of covering when not exceeding this is “F-3”. In addition, the minimum required soil cover when the pipe diameter is 250/300 mm in the pavement configuration (D traffic) is 1.2 m, and the value of the soil cover shortage when not exceeding this is “F-4”. Further, for each pavement configuration, the minimum required covering when the tube diameter is 350 to 450 mm is 1.3 m, and the shortage of covering when not exceeding this is “F-5”. Further, for each pavement configuration, the minimum required covering when the pipe diameter is 500 mm or more is 1.5 m, and the shortage of covering when not exceeding this is “F-6”.

  Calculation of sewage flow rate / velocity flowing through existing pipes in the relevant route section, determination of whether the calculated values satisfy the reference value or the planned value, and whether the soil cover satisfies the predetermined reference value The determination of whether or not is programmed in the database creation software 101 and is automatically performed.

The redevelopment policy data section 130 based on the evaluation result of the existing pipe flow capacity and the like includes data items indicating the necessity of redevelopment of the existing pipe, the method of redevelopment, and the cause of the redevelopment.
The data items that indicate the necessity of redevelopment of existing pipes and the method of redevelopment are divided into use of existing pipes, refurbishment, and replacement. In addition, as a data item indicating the cause of redevelopment, inadequate flow rate flow rate corresponds to recreational use, and cloth replacement is divided into a lack of capacity, a shortage of soil cover, and a reverse slope.
Then, a determination result is set in the redevelopment policy data unit 130 based on the evaluation result of the existing pipe flow capacity and the like based on the determination criteria as shown in Table 2 below.

Table 2
Criteria for redevelopment policy based on evaluation results of existing pipe flow capacity, etc.

Insufficient flow rate and flow rate, at least one of the calculated flow rate or flow rate failed in the first evaluation (the first relevant judgment information item is marked with “×”), but the roughness coefficient or pipe as described above. It corresponds to the case where the rejected state is resolved and passed by changing the variable such as the diameter and recalculating (the judgment information item at the time of recalculation is “◯” mark).
More specifically, for example,
(1) When the flow rate is equal to or greater than the planned flow rate in the flow rate information file 160 (the first flow rate determination information item is “◯”), but the flow velocity is less than 0.8 m / s (the first flow rate determination information item) Is marked with “×”), and when the flow velocity when recalculation is changed by changing the roughness coefficient (0.013 to 0.010) becomes 0.8 m / s or more (the flow velocity determination information item at the time of recalculation is "○")
(2) When the flow velocity is 0.8 m / s or more (the first flow velocity determination information item is “○”), but the flow rate is lower than the planned flow rate in the flow rate information file (the first flow rate determination information item is “ In “×”, the numerical value of the pipe diameter and roughness coefficient of the existing pipe is changed (for example, the pipe diameter of the existing pipe minus 10 mm, the roughness coefficient is 0.010), and the flow amount when recalculated is the flow rate information file 160. This corresponds to when the flow rate exceeds the planned outflow amount (the flow amount judgment information item at the time of the most calculation is "○").

And when it corresponds to the lack of flow rate flow velocity, it is determined as a redevelopment policy for refurbishment. Rehabilitation is a redevelopment method in which existing pipes are used after being rehabilitated, such as lining a plastic resin such as vinyl chloride, in order to reduce the frictional resistance of the inner surface of the pipe. It should be noted that a plurality of types of symbols that are subdivided according to the cause of redevelopment are output for further life.
For example, “B” is solved for the shortage of the flow rate, “B” is solved for the shortage of the flow rate, “ΔB” is for the case where there is not enough room for the flow rate of 20%, and “C” is for the shortage of the flow rate is resolved. "

Insufficient capacity means that at least one of the calculated flow rate and flow velocity fails in the first evaluation (the first judgment information item is marked with “×”), and the roughness coefficient or pipe diameter is as described above. This corresponds to the case where even if the variable is changed and recalculated, the rejected state cannot be resolved (the determination information item at the time of recalculation is “×”).
The earth covering shortage section corresponds to a case where the determination of the earth covering fails (when the earth covering shortage determination information item is, for example, any one of “F-1” to “F-5”). To do.
The reverse gradient is applicable when the gradient is negative.

And when it corresponds to these capacity shortages, a soil shortage section, and a reverse slope, cloth replacement is determined as a redevelopment policy.
Cloth replacement is a redevelopment method that replaces existing pipes with new sewage pipes. It should be noted that a plurality of types of symbols subdivided according to the cause of redevelopment are output in the cloth replacement.
For example, in the data item of insufficient ability, “D” is caused by insufficient flow ability even if used for further living, and the minimum flow velocity is 0.8 m / s or less even if used for further living. "E" is attached to the thing that causes this.
In addition, the data items of the shortage section of the soil cover include the cases where the soil cover shortage symbol is “F-1” to “F-4” when the tube diameter is 250 or 300 mm, and the tube diameter is 350 to 450 mm. If the soil cover shortage symbol is "F-5" and the pipe diameter is 500mm or more, the soil cover shortage symbol is "F-5", "F". Add “G” to affected sections.
Further, in the data item of the reverse gradient, “H” is added to a section where the reverse gradient is canceled, and “I” is added to a section which is affected by canceling the reverse gradient.

Use of existing pipes is applicable when the flow rate, flow rate, and soil cover information items are all passed, and the redevelopment policy does not correspond to either rehabilitation or replacement.
Existing pipe use is a redevelopment method that uses existing pipes as they are. For existing pipe use, a plurality of types of subdivided symbols are output according to the cause of redevelopment.
For example, “○” for the section that satisfies the flow capacity, minimum flow velocity, reverse slope, and earth cover, “○ △” for the section that has a pipe diameter of 600 mm or more and no surplus expected flow rate, and inverts when the pipe diameter is 1000 mm or more. The section where the slope is corrected is “A”, the pipe diameter is 600 mm or more and the earth covering is less than 1.5 m, but the area which satisfies the minimum required earth covering corresponding to the pavement configuration at the pipe diameters of 250 and 300 mm. Add "F" to

  The determination of each redevelopment policy in the redevelopment policy data unit 130 based on the evaluation result of the existing pipe flow capacity and the like is programmed in the database creation software 101 and is automatically performed.

  Then, when the existing pipe redevelopment policy automatic determination database system 100 based on the existing pipe capacity evaluation result configured as described above is activated, data is created as follows. FIG. 4 is a flowchart showing the data creation procedure of the existing pipe re-repair policy automatic determination database system 100 based on the existing pipe capacity evaluation result.

First, the sewer ledger diagram file 140 and the pavement information file 150 are input. From the sewer ledger diagram file 140, the pipe diameter, pipe type, ground height (upstream), ground height (downstream), pipe bottom height (upstream) ), Pipe bottom height (downstream), gradient, and extension are stored in the data section 110 of the existing pipe from the pavement information file 150 (step S11).
Next, the flow velocity and amount of sewage flowing in the existing pipes of the route section are calculated, and the cover of the route section is acquired from the sewer ledger diagram file 140. Then, while inputting the flow rate information file 160 and referring to the outflow amount of the corresponding route section, based on the evaluation criteria described using Table 1, these calculated flow velocity and flow rate are the above-described reference values or planned values. It is determined whether or not the acquired soil cover satisfies the minimum required soil surface defined according to the pavement configuration and the pipe diameter of the existing pipe. Then, these data are stored in the existing pipe status data, the existing pipe flow capacity evaluation data portion 120 (step S12).
Next, based on the evaluation data, such as the flow capacity of existing pipes, based on the criteria described using Table 2, determine the redevelopment policy on whether the existing pipes will be used as they are, used for further living, or replaced. The determination result is stored in the redevelopment policy data unit 130 based on the evaluation result of the existing pipe flow capacity and the like (step S13). Thereby, the creation of the existing pipe redevelopment policy data in the one-line section by the existing pipe redevelopment policy automatic determination database system 100 based on the existing pipe capacity evaluation result is completed.

Next, the existing pipe redevelopment policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe inspection of the present embodiment will be described. Table 3 shows data items of the database file 201 of the database system 200.

  As shown in FIG. 2, the database file 201 of the database system 200 of this embodiment includes a scored data unit 210 of a defective state based on a TV camera in-pipe investigation image, and an evaluation of a state in an existing pipe made up of a total value of input data. The data section 220 and the redevelopment policy data section 230 based on the evaluation result of the state in the existing pipe by the pipe survey are provided.

As shown in Table 3, the defective data scoring data section 210 based on the TV camera in-tube survey image is composed of a span information section, a survey recording section, and a mounting pipe section.
As shown in Table 3, the span information section includes the survey date, survey location, line number, processing zone name, upstream human hole number, downstream human hole number, main pipe number, distance between human holes, and pipe type. , Tube diameter, exclusion method, etc., and these data items are entered on the screen.
The survey record section is classified into a joint section, a main pipe section, and a mounting pipe section, and further comprises a defect type, a judgment rank, and a score. These data items will be described later while observing the survey image. The screen is input based on the criterion for determining the defective part.
The attachment pipe portion is configured by the number of attachment pipes, which is the number of attachment pipes connected to one pipe rod, and this data item is input on the screen.

Table 4 shows an example of a determination standard table for defective portions used in the present embodiment. Moreover, the content of the specific judgment criteria in Table 4 is shown in FIGS. 5 to 9, n1 to n22 are arbitrary integers.

  Judgment criteria for defective parts are divided into items for each cause of failure as repair countermeasure items, and further divided into items for each abnormal content depending on the predetermined cause of failure, and each subdivided item is used as a check item. . Then, for each check item, the state in the tube indicated by the image is ranked into a determination criterion of 10 ranks at the maximum according to the state in the tube that can be objectively determined such as the size of breakage or cracks. The state in the jurisdiction that serves as the standard for the ranked items is as objective as possible, such as limiting the symptoms to numerical values. A numerical value is assigned according to the degree of each rank.

Specifically, the criteria for determining a defective portion are classified into categories such as depressions, depressions / increase in treated water, depressions / increase in treated water, poor flow, poor flow, bad odor, and the like.
When the cause of the defect is depression, the abnormal contents are further divided into items such as tube breakage, cracks, tube corrosion, tube gap or tube displacement. The rating score is divided into 10 levels for pipe breakage, 6 levels for cracks, 4 levels for corrosion of pipes, and 3 levels for gaps in pipes or misalignment of pipes. Has been. In the present embodiment, 1 to 3 points are C rank, 4 to 6 points are B rank, and 7 to 10 points are A rank.

In addition, when the cause of the defect is depression / increase in treated water, the abnormal contents are further classified into intrusion water, joint failure or finish failure, and blockage failure. The evaluation score is divided into five levels for intrusion water, three levels for poor bonding or finishing, and three levels for blockage failure. Furthermore, the evaluation score is classified into three levels according to the evaluation score.
In addition, when the cause of the failure is depression / increase in treated water or poor flow, there is an item of protrusion of the mounting pipe as an abnormal content, and the evaluation score is divided into three stages for the mounting pipe protrusion. According to the ranking, it is ranked in three levels.
In addition, if the cause of failure is poor flow or bad odor, there are items of sagging and meandering as abnormal contents. In the sagging and meandering, the evaluation score is divided into three levels, and further, there are three levels according to the evaluation score. Is ranked. As for sagging and meandering, for example, as shown in FIGS. 10 (a) and 10 (b), the outer peripheral surface of a pipe having a pipe diameter of 230, 250, 300, 400, 450, 500, 550, 600 mm. The length L1 connecting the two points located on the inner side by a length H1 of 1/3 of the pipe diameter D from the pipe, and connecting the two points located on the inner side by a length H2 of 1/5 of the pipe diameter D from the outer peripheral surface of the pipe The determination is made based on whether or not the range of the length L2 is exceeded.

The evaluation data section 220 of the state in the existing pipe is the number of applicable existing pipes according to the failure state rank in the defect types such as breakage, crack, corrosion, joint displacement, intrusion water, joint failure, blockage failure, mounting tube protrusion, sagging, etc. Consists of total items for main pipes, slack meandering, intrusion water, total number of applicable existing pipes for each defective state rank in defective mounting pipes, and defect rate calculation items for each defective state rank Has been.
Using the defect type, determination rank and score of the survey recording part input on these screens, the total number of existing pipes corresponding to each rank, and the set of the aggregated values in the evaluation data part 220 of the state in the existing pipes are: It is programmed in the database creation software 201 and is automatically performed.

The redevelopment policy data section 230 based on the evaluation result of the state of the existing pipes by the pipe survey includes data items indicating the necessity of redevelopment of existing pipes, the method of redevelopment, and the cause of redevelopment.
The data items that indicate the necessity of redevelopment of existing pipes and the method of redevelopment are divided into use of existing pipes, refurbishment, and replacement. In addition, the data items indicating the cause of redevelopment are divided into data items based on the overall failure evaluation of the main, those based on the slack meander evaluation, and those based on the intrusion water evaluation. For rehabilitation, data items indicating the method of redevelopment are divided into rehabilitation independence and rehabilitation complex. Furthermore, the rehabilitation complex is divided into data items that indicate the cause of redevelopment, based on the overall failure assessment of the main, and on the basis of the intrusion water assessment.
Then, the redevelopment policy data unit 230 based on the evaluation result of the state in the existing pipe by the pipe inspection sets the determination result based on the determination criteria as shown in Table 5 below.

◎：当該ランクに該当することが必須。
○：当該ランクに該当した場合、判定条件に加算される。
△：当該ランクに該当しても判定条件に加算されない。
×：当該ランクに非該当であることが必須。

◎: It is essential to correspond to the rank.
○: Adds to the judgment condition when corresponding to the rank.
(Triangle | delta): Even if it corresponds to the said rank, it does not add to determination conditions.
×: It is essential that the rank is not applicable.

  In this embodiment, the defect rate for each predetermined defect rank is calculated from the defect rank and the number of defects recorded as the existing in-pipe investigation data via software, and according to the upper and lower limits of the defect rate for each rank. The method of redevelopment is judged.

  For example, the main comprehensive judgment criteria shown in Table 5 are as follows: (1) Defect rank A is 30% or more, (2) Defect rank A is 20-30%, (3) Defect rank A to C includes defect rank A 50% or more, (4) Defect ranks A to C include 30 to 50%, (5) Defect rank A and defect ranks A to C are less than 30%, (6) Defect rank A is 0% Defect rank B, C is 50% or more, (7) Defect rank A is 0%, Defect rank B, C is 40-50%, (8) Defect rank A is 0%, Defect rank B, C is 40% Less than (9) Defect rank A, B is 0%, Defect rank C is 50% or more, (10) Defect rank A, B is 0%, Defect rank C is less than 50% The methods of redevelopment are different, such as for rehabilitation and using existing pipes. In Table 5, the failure rate of the main pipe indicates the number of defective pipes with respect to the number of main pipes as a percentage.

And in the main comprehensive judgment criteria of Table 5, (1) When the defect rank A is 30% or more, the method of redevelopment is set as cloth replacement (I). (2) When the defect rank A is 20 to 30%, the cloth is replaced (II). (3) When the defect ranks A to C including the defect rank A are 50% or more, the cloth is replaced (II). (4) When the defect ranks A to C including the defect rank A are 30 to 50%, the cloth is replaced (III). (5) If the defect ranks A to C including the defect rank A are less than 30%, they are used for further living (independent). (6) When the defect rank A is 0% and the defect ranks B and C are 50% or more, they are used for further living (independent). (7) When the defect rank A is 0% and the defect ranks B and C are 40 to 50%, they are used for further living (composite). (8) When the defect rank A is 0% and the defect ranks B and C are less than 40%, the existing pipe is used. (9) When the defect ranks A and B are 0% and the defect rank C is 50% or more, it is used for further living (composite). (10) When the defect ranks A and B are 0% and the defect rank C is less than 50%, the existing pipe is used.
The rehabilitation (self-supporting) is a structure for which the strength of the existing pipe is not expected, and the rehabilitation (composite) is for the further life having a structure in which the existing pipe and rehabilitation material are integrated.

  Moreover, the sagging meandering judgment criteria shown in Table 5 are (1) the defect rank A is included and the defect ranks A to C are 30% or more, (2) the defect rank A is included and the defect ranks A to C are 15 to 30%, ( 3) Defect rank A to C including defect rank A is less than 15%, (4) Defect rank A is 0%, defect rank B, C is 50% or more, (5) Defect rank A is 0%, defect rank B , C is 30-50%, (6) Defect rank A is 0%, defect rank B, C is less than 30%, (7) Defect rank A, B is 0%, defect rank C is 50% or more, (8 ) The redevelopment methods are changed according to the cases where the defect ranks A and B are 0% and the defect rank C is less than 50%. In Table 5, the failure rate of the main pipe indicates the number of defective pipes with respect to the number of main pipes as a percentage. In addition, the slack situation of the main pipe is determined according to the criterion described with reference to FIG. And rank A corresponds to D / 3 or more, rank B corresponds to D / 5 or more and less than D / 3, and rank C corresponds to less than D / 5.

  And according to the sagging meandering judgment criteria of Table 5, (1) When the defect ranks A to C including the defect rank A are 30% or more, the cloth replacement 1 is set. (2) When the defect ranks A to C including the defect rank A are 15 to 30%, the cloth replacement 2 is set. (3) When the defect ranks A to C including the defect rank A are less than 15%, the cloth replacement 3 is set. (4) When the defect rank A is 0% and the defect ranks B and C are 50% or more, the cloth replacement 2 is set. (5) When the defect rank A is 0% and the defect ranks B and C are 30 to 50%, the cloth replacement 3 is set. (6) When the defect rank A is 0% and the defect ranks B and C are less than 30%, the existing pipe is used. (7) When the defect ranks A and B are 0% and the defect rank C is 50% or more, the cloth replacement 3 is set. (8) When the defect ranks A and B are 0% and the defect rank C is less than 50%, the existing pipe is used.

  Moreover, the intrusion water judgment criteria shown in Table 5 are as follows: (1) When the defect rank A exists, (2) The defect rank A is 0%, the defect ranks B and C are 10% or more, and (3) the defect rank A is Defect rank B, C is less than 10% at 0%, (4) Defect rank A, B is 0%, Defect rank C is 50% or more, (5) Defect rank A, B is 0%, Defect rank C is 50 Depending on the percentage less than 50%, the methods of redevelopment are different, such as for life changing (composite) and using existing pipes. In Table 5, the failure rate of the main pipe indicates the number of defective pipes with respect to the number of main pipes as a percentage. Although not shown in Table 5, as an exception to this criterion, when seawater is mixed, the pipes in the areas where the defective ranks A and B exist are replaced.

  And according to the intrusion water judgment criteria of Table 5, (1) When the defect rank A exists, it is set as a life change (composite). (2) When the defect rank A is 0% and the defect ranks B and C are 10% or more, they are used for further living (composite). (3) When the defect rank A is 0% and the defect ranks B and C are less than 10%, the existing pipe is used. (4) When the defect ranks A and B are 0% and the defect rank C is 50% or more, it is used for further living (composite). (5) When the defect ranks A and B are 0% and the defect rank C is less than 50%, the existing pipe is used.

  Moreover, the attachment pipe judgment criteria shown in Table 5 are as follows: (1) Depending on the number of defective attachment pipes of defect ranks A, B, and C, the method of redevelopment is changed such as replacement of cloth and use of existing pipes. Yes. In addition, in the attachment pipe determination in Table 5, the number of unnecessary attachment pipe portions when the standard span is L = 30 m is referred to.

And according to the attachment pipe judgment criteria of Table 5, (1) When there are eight or more defective attachment pipes of the defect ranks A, B, and C, it is determined as cloth replacement (IV). (2) If there are less than 8 defective pipes with defective ranks A, B and C, the existing pipes will be used.
In addition, in this embodiment, it classify | categorizes according to the content and the grade of the construction method in cloth replacement, such as cloth replacement (I), (II), (III), (IV), 1, 2, 3.

  Furthermore, based on the judgment results derived from these judgment criteria, the necessity of redevelopment of existing pipes and the method of redevelopment are determined in the priority order shown in the judgment order of Table 5 (a), and the results are set. It is supposed to be.

  The in-pipe survey image used in the database system 200 is captured through an imaging unit such as a TV camera. As the TV camera, a camera configured to be able to take an image of the inside of a pipe in a predetermined route section is used. The TV camera is connected to a computer provided with the database system 200 via transmission means such as wired, wireless, and optical fiber, and transmits image data such as captured moving images and still images to the computer. Is preferable. The transmitted image data and the image data input via the movable recording medium are displayed on the monitor screen of the computer. The computer can record transmitted image data or image data input via a movable magnetic medium as an image database file 240. Note that it is preferable to control the TV camera so that the photographing direction can be changed 360 degrees by remote operation from a computer.

  Then, when the existing pipe redevelopment policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe inspection of the present embodiment configured as described above is activated, data is created as follows. FIG. 11 is a flowchart showing a data creation procedure of the existing pipe re-repair policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe investigation in this embodiment.

First, on the display screen of a terminal connected to the computer on which the database system 200 is started, the operator inputs predetermined information into each data item of the span information section described above, and the corresponding by the TV camera displayed on the display screen. While observing the in-pipe investigation images of each existing pipe in the route section, based on the judgment criteria of the defective part shown in Table 4 and FIGS. 5 to 9, the joint part, main pipe part, mounting pipe part in the investigation recording part The defect type, determination rank, and score are input for each of the defect states (step S21).
As a result, a scored data unit 210 of a defective state is created based on the TV camera in-tube investigation image obtained by objectively digitizing and symbolizing the TV in-tube investigation image.
When the defective point scoring data section 210 based on the TV camera in-pipe investigation image is created, the database system software uses the values entered on the screen to set the existing pipe corresponding to the rank for each type of fault in the existing pipe. The total number of pipes is counted, and the total value is used to calculate the defect rate by summing the number of defects by rank for each type of defect in the main pipe, slack meandering, intrusion water, and attachment pipe defects. It stores in the evaluation data part 220 of the state in an existing pipe (step S22).
Next, using the created evaluation data 220 for the state of the existing pipe, based on the criteria described using Table 5, redevelopment of whether to use the existing pipe as it is, use it for further living, or replace the cloth The policy is determined, and the determination result is stored in the redevelopment policy data section 230 based on the evaluation result of the state in the existing pipe by the pipe survey (step S23). Thereby, the preparation of the existing pipe redevelopment policy data in the one-line section by the existing pipe redevelopment policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment is completed.

Next, a comprehensive existing pipe redevelopment policy automatic determination database system 300 will be described.
The database file 301 of the database system 300 includes a comprehensive redevelopment policy data section 310 as shown in FIG.

The comprehensive redevelopment policy data section 310 is configured to include data items indicating the necessity of redevelopment of existing pipes, the method of redevelopment, and the cause of redevelopment.
Data items indicating the necessity of redevelopment of existing pipes and the method of redevelopment are divided into use of existing pipes, refurbishment, replacement of cloths, and slope correction. Furthermore, rehabilitation is divided into rehabilitation independence and rehabilitation complex. In addition, data items indicating the cause of redevelopment are divided into rehabilitation composites based on the evaluation results of existing pipe flow capacity, etc., and on the basis of the evaluation results of existing pipes in the pipe survey. The replacement of the cloth is based on the evaluation result of the existing pipe flow capacity, the evaluation based on the evaluation result of the state of the existing pipe by the pipe survey, and the soil cover shortage section or the soil cover shortage elimination affected section. It is divided into and.
Then, the comprehensive redevelopment policy data part 310 is based on the redevelopment policy recorded in the redevelopment policy data part 130 based on the evaluation result of the existing pipe flow capacity, etc. Using the redevelopment policy recorded in the policy data section 230, the determination result is set based on the determination criteria as shown in Table 6 below.

For example, for existing pipe use, a value indicating “existing pipe use” (for example, “○” mark is shown in both items of existing pipe use in the redevelopment policy data unit 130 and existing pipe use in the redevelopment policy data unit 230. ), A value (for example, “○” mark) indicating that “existing pipe use” is applicable.
For the replacement of cloths based on the evaluation results of existing pipe flow capacity, etc., if there is a value for either the insufficient capacity for replacement of cloths or the reverse gradient in the redevelopment policy data section 130, it should be considered “replacement of cloth”. The indicated value (for example, “◯” mark) is attached.
For cloth replacement based on the evaluation result of the state of existing pipes in the pipe survey, if there is a value for any of the main, slack, or mounting pipe items in the redevelopment policy data section 230, add that value. .
For the cloth replacement caused by either the earth covering shortage section or the earth covering shortage elimination affecting section, a value indicating “land covering shortage” in the item of the cloth covering shortage section of the cloth replacement in the redevelopment policy data section 130 (for example, , “F”), and a value (for example, “G”) indicating the “insulation cover shortage-affected zone”, and the redevelopment policy in the redevelopment policy data section 230 is “used existing pipe”. In the case of (1), a value (for example, “◯” mark) indicating that it corresponds to “replacement” is attached.

In the slope correction, there is a value indicating “use of existing pipe” in both items of existing pipe use in the redevelopment policy data part 130 and existing pipe use in the redevelopment policy data part 230, and the slope is included in the value. When there is a value (for example, “◯ A”) indicating a section for correcting “Slope correction”, a value (for example, “A”) indicating “gradient correction” is added.
For rehabilitation (independence), there is no value in the items of the cloth replacement in the redevelopment policy data part 130 and the cloth replacement in the redevelopment policy data part 230, and the rehabilitation policy data part 230 When the item has a value, a value (for example, “○” mark) indicating that it corresponds to “rehabilitation independence” is attached.
For rehabilitation (composite) based on the evaluation results of existing pipe flow capacity, there are no values for either the replacement of cloth in the redevelopment policy data section 130 or the replacement of cloth in the redevelopment policy data section 230. When there is a value in the item of rehabilitation compound in the maintenance policy data part 130, a value (for example, “◯” mark) indicating that it corresponds to “rehabilitation compound” is attached.
There is no value in the items for replacement in the redevelopment policy data part 130 and replacement in the redevelopment policy data part 230 for rehabilitation (composite) based on the evaluation result of the state in the existing pipes by the in-house survey, In addition, when there is a value in the rehabilitation composite item in the redevelopment policy data section 230, a value (for example, “◯” mark) indicating that it corresponds to “rehabilitation composite” is attached.

  The determination of each redevelopment policy in the overall redevelopment policy data unit 310 is programmed in the database creation software 301 and is automatically performed.

  Then, when the general existing pipe re-maintenance policy automatic determination database system 300 configured as described above is activated, data is created as follows. FIG. 12 is a flowchart showing a data creation procedure of the comprehensive existing pipe re-repair policy automatic determination database system 300.

First, data in a predetermined route section created by the existing pipe re-maintenance policy automatic determination database system 100 based on the existing pipe capacity evaluation result is read (step S31).
Subsequently, the data in the said route section produced with the existing pipe re-maintenance policy automatic determination database system 200 based on the evaluation result in the existing pipe by the pipe investigation of this embodiment are read (step S32).
Next, the re-maintenance policy data of each existing pipe in the input database system 100, 200 is added, and the existing pipe is used as it is, based on the judgment criteria described using Table 6, or used for further living, or laying The redevelopment policy for replacement is determined, and the determination result is stored in the comprehensive redevelopment policy data unit 310 (step S33). Thus, the creation of the existing pipe redevelopment policy data in the one-line section by the comprehensive existing pipe redevelopment policy automatic determination database system 300 is completed, and the final redevelopment policy of the existing pipe is determined.

  In addition to outputting the comprehensive redevelopment policy data section 310, the existing pipe redevelopment policy automatic judgment database system 300 creates the existing pipe redevelopment policy automatic judgment database system 100 based on the existing pipe capacity evaluation result. The predetermined data (for example, the data in the predetermined route section and the data in the route section created by the automatic determination database system 200 for the existing pipe based on the evaluation result in the existing pipe based on the in-pipe investigation of the present embodiment (for example, , Existing pipe specifications data section 110, existing pipe status, existing pipe flow capacity evaluation data section 120, redevelopment policy data section 130 based on the evaluation results of existing pipe flow capacity, evaluation data section of existing pipe status 220, and the redevelopment policy data section 230 based on the evaluation result of the state in the existing pipes by the pipe survey) It may be.

Thus, according to the existing pipe redevelopment design system of FIG. 1, the capacity of the existing pipe is automatically calculated and evaluated from the existing sewer ledger diagram data, etc., and the existing pipe is automatically calculated based on the evaluation result. Determine the redevelopment policy. Here, according to the existing pipe re-restoration policy automatic determination database system based on the evaluation result of the state in the existing pipe by the pipe inspection of this embodiment, the defect in the pipe while observing the investigation image in the pipe obtained from the imaging means The operator can objectively input the status based on the judgment criteria for the defective part. After the input, the fault condition in the pipe is automatically evaluated, and the existing pipe refurbishment policy is automatically judged based on the evaluation result. . For this reason, the operator can design a highly accurate redevelopment policy only by inputting objective items without making subjective judgment based on knowledge, experience, and intuition. Furthermore, a comprehensive rehabilitation policy for existing pipes is automatically determined using the redevelopment policy based on the capacity of these existing pipes and the redevelopment policy based on the survey.
Therefore, according to the existing pipe redevelopment policy automatic determination database system of the existing pipe based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment, the work load is reduced, It is possible to make a stable maintenance plan that is efficient and has no waste, and that does not vary in judgment.

In the city of Yokohama, the applicant of the present invention, when using an existing pipe redevelopment design system equipped with an existing judgment system for an existing pipe redevelopment policy based on the evaluation results of the state of existing pipes by the pipe internal survey of the present invention, The simulation was performed with and without using it, and the comparison was made from various viewpoints.
In Yokohama City, there are 7 consultants who can conduct tube renewal projects. This is due to the high level of difficulty in the tube renewal business. In these seven companies, the number of engineers who can handle the tube renewal business is about one per company.
Therefore, the existing pipe refurbishment policy based on the conventional design method and the evaluation results of the existing pipe state by the pipe inspection of the present invention, such as the number of pipe renewal projects that one engineer can engage in one year. Comparison was made with a design method using an existing pipe redevelopment design system equipped with an automatic judgment database system.
In the simulation, considering that the chief engineer of each company is in a key position of the company and is engaged in various operations, the number of days that can be engaged in the management renewal business was set to about 10% of the total working days.
When the tube renewal extension of 1.5 km (refurbishment area 6 ha) is taken as one job, the number of work that can be digested for one year (acting days 245 days excluding weekends and holidays) was calculated per chief engineer. The results are shown in Table 7 below.
In Table 7, the items directly affected by the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation results of the existing pipe state by the pipe internal investigation of the present invention are as follows: They are “pipe tube update primary determination” and “pipe tube update secondary determination”. In addition, the items that are affected in a derivative manner are “the number of working days for the chief engineer”, “the number of work that can be digested for one year (245 days)”, “the consultant contracted by Yokohama City for one year The number of operations that can be performed in the following manner ”,“ area conversion (6 ha / 1 operation) ha ”,“ pipe extension calculation (1.5 km / 1 operation) km ”.
In addition, “primary judgment of pipe renewal” means that an existing pipe equipped with an automatic judgment database system for existing pipe redevelopment policy based on the evaluation result of the state of the existing pipe by the pipe inspection of the present invention described with reference to FIG. Redevelopment policy judgment based on the existing pipe capacity evaluation result in the redevelopment design system ~ Re-rehabilitation policy judgment based on the evaluation result of the state of existing pipes by in-house investigation ~ Design processing equivalent to comprehensive redevelopment policy judgment Say. The reason for the “secondary determination for tube renewal” is that, after the “first determination for tube renewal”, the renewal policy is reviewed again by changing the renewal design conditions of the existing tube.

As shown in Table 7, in the conventional design method, the amount of work that can be performed annually is an area of 121.8 ha and a tube length of 30.5 km. On the other hand, in the design method using the existing pipe redevelopment design system including the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state in the existing pipe by the in-pipe investigation of the present invention, the area 189.0 ha. The tube extension is 47.3 km. Therefore, according to the design method using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation of the present invention, the conventional design method Compared to this, it can do 1.5 times as much work.
For example, in Yokohama City, it will be necessary to carry out the pipe renewal project in an area of about 200 ha and a pipe renewal extension of about 50 km per year. With the conventional design method, it is almost impossible to carry out the pipe renewal project as scheduled, but the existing pipe re-restoration policy automatic judgment database system based on the evaluation result of the state of the existing pipe by the pipe inspection of the present invention The existing pipe redevelopment design method provided can be performed almost as scheduled.

表８に示すように、本発明の管内調査による既設管内の状態の評価結果に基づく既設管の再整備方針自動判定データベースシステムを備えた既設管の再整備設計システムを用いた設計方法によれば、管渠更新事業１件あたり必要日数が従来の設計方法の約７４％（１０２．０÷１０３．５≒０．７４２）となり従来の設計方法と比較して約２６％工期を短縮することが可能である。 In addition, the existing pipe renewal design system in the pipe renewal business and the existing pipe redevelopment policy automatic judgment database system based on the evaluation results of the existing pipe state based on the in-pipe investigation of the present invention were used. The design method was compared with the required design days. The results are shown in Table 8. In addition, the business scale per case is an area of 6.0 ha and a tube renewal extension of 1.5 km. In Table 8, “primary determination” and “secondary determination” correspond to “pipe renewal primary determination” and “pipe renewal secondary determination” in Table 7, respectively.

As shown in Table 8, according to the design method using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation of the present invention. The number of days required per tube renewal business is about 74% of the conventional design method (102.0 ÷ 103.5 ≒ 0.742), which means that the construction period can be shortened by about 26% compared to the conventional design method. Is possible.

The job classification of engineers engaged in the design work in the simulation of this embodiment is as shown in Table 9 below.

Moreover, the standard of years of practical experience is as shown in Table 10 below. The number of years of experience is the number of years after graduation from a higher education school in the civil engineering sector.

Number of days / costs until decision on redevelopment policy in sewer pipe renewal project Existing existing redevelopment policy automatic judgment database system based on the existing design method and the evaluation result of existing pipe state based on the in-pipe investigation of the present invention Comparison with the design method using the pipe redevelopment design system is shown in FIGS. The redevelopment extension is 1.5km and the redevelopment area is 6ha.
Comparing up to the redevelopment policy decision, as shown in Fig. 13 and Fig. 14, in the conventional design method, the required number of days is 63.5 days, the total artificial number is 71.5, the total labor cost is 113.0. On the other hand, in the design method using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the existing pipe state by the pipe internal investigation of the present invention, the number of days required On 28.0 days, the total man-made number was 32.6 and the total labor cost was 52.4. Thus, according to the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation of the present invention, the required number of days is about 44 times that of the prior art. % (28 ÷ 63.5 ≒ 0.441), total artificial number is about 46% (32.6 ÷ 71.5 ≒ 0.456), and total labor cost is about 46% (52.4 ÷ 113.0≈0.463), the number of days and the cost can be greatly reduced.

As described above, the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the in-pipe investigation of the present invention requires advanced experience and knowledge. It is possible to reduce the number of workers. Furthermore, it was confirmed by simulation that the present invention can be designed even if the proportion of design assistants is increased.
Prior to that, I will explain the business ability of the engineer occupation.
In sewer pipe design work, work ability is required for each type of job. Table 11 below shows the abilities required for engineers (B) and below and abilities required for engineers (A) and above. Engineer (A) and above already have the ability of Engineer (B) and below.

Even if it is less than engineer (B), it is not so easy to obtain the necessary design ability. As shown in Table 10, the work experience requires technicians for 1 year or more, engineers (C) for 5 years or more, and engineers (B) for 8 years or more. When performing a tube renewal design with the conventional design method, the spreadsheet of a personal computer, the ability to write drawings, its ability to express, and the ability to calculate are indispensable. In addition, when designing renewal of pipes, skill level such as considerable knowledge and experience is required. For this reason, the range in which assistants below technicians can work is limited, for example, by investigating underground facilities of other companies such as telephone lines, gas pipes, and water pipes.
However, when renewal design is performed using an existing pipe redevelopment design system equipped with an automatic determination database system for existing pipe redevelopment policy based on the evaluation result of the state of existing pipes by the pipe internal investigation of the present invention, the right end of Table 11 Skilled abilities are not required as indicated by "x" and "△" in the column. This is because the existing pipe redevelopment design system equipped with an automatic judgment database system for existing pipes based on the evaluation results of the existing pipes in the pipe inspection of the present invention calculates the flow rate, etc. This is because most of the data that has to be created by a skilled engineer in the conventional design method, such as a drawing representing the situation, judgment of tube renewal, etc., is automatically given in the system. For this reason, even a design assistant who has only the ability of a technician or less can perform a considerable part of the design.

Therefore, in the case of designing using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the existing pipe internal state by the pipe internal investigation of the present invention, the design assistant Simulated cost savings.
In the design method using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the state of existing pipes by the pipe internal investigation of the present invention, engineers (B) and below are engineers. Therefore, it is considered that 2/3 can be left to the design assistant. Therefore, FIG. 15 shows a result of simulating how much the design fee can be saved when 2/3 of the work of the engineer (B) and below is left to the design assistant. In the simulation, the design assistant made 50% of the labor cost of the engineer.
FIG. 15 shows the cost until the redevelopment policy decision in the sewerage pipe renewal project shown in FIG. 14 and the existing pipe redevelopment policy automatic based on the conventional design method and the evaluation result of the state of the existing pipe by the in-pipe investigation of the present invention In addition to the comparison with the design method using the existing pipe redevelopment design system equipped with the judgment database system, the case where the ratio of the design assistant is increased (shown as “design method 2 of the present invention”) is added. It is a table | surface which shows the comparative result.

As shown in FIG. 15, when the total labor cost of the conventional design method is assumed to be 100%, the existing pipe re-repair policy automatic judgment database system based on the evaluation result of the state of the existing pipe by the in-pipe investigation of the present invention is provided. In the design method using the existing pipe redevelopment design system (shown as “design method 1 of the present invention”), the total labor cost is 46%, and the work below the engineer (B) is assigned to the design assistant. In this case (shown as “design method 2 of the present invention”), the total labor cost was 28%.
Thus, according to the design method by the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe internal investigation of the present invention, the design assistant It was found that the labor cost could be saved by 72% compared to the conventional design method if the part to be entrusted was included.

It should be noted that the existing pipe re-restoration policy based on the existing pipe capacity evaluation result in the existing pipe redevelopment design system equipped with the automatic judgment database system for the existing pipe based on the evaluation result of the state in the existing pipe by the in-pipe investigation of this embodiment. Existing pipe use section, refurbishment section, cloth replacement section, soil cover shortage section and soil cover shortage affected section in the predetermined route area based on the maintenance policy data, and the existing pipe based on the evaluation result of the existing pipe state by the pipe survey Existing pipe use section, rehabilitation section, cloth replacement section, existing pipe destruction status, sagging situation and inundation water status in the specified route area based on the redevelopment policy data, as well as the predetermined based on the overall redevelopment policy data The existing pipe use section, refurbishment section, cloth replacement section, soil cover shortage section, soil cover shortage affected section, etc. in the route area are stored as numerical values or symbols in the database. In addition to being able to show on a paper monitor via a computer monitor or printer, in addition to being able to show on the paper via a monitor or printer in an actual map format, more workers and neighboring residents It is preferable for the explanation and the assistance of the redevelopment.
Therefore, in the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment, in each database system 100, 200, 300, Software is provided on the map (division plan) to print or monitor the existing pipes by changing the color or line type for each redevelopment policy.

FIGS. 16 to 18 are views of the existing pipe redevelopment design system including the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe internal investigation according to the present embodiment. FIG. 16 is a determination diagram showing the maintenance policy in a map format. FIG. 16 shows the re-examination of the existing pipe based on the existing pipe capacity evaluation result output from the existing pipe capacity evaluation result database system 100 based on the existing pipe capacity evaluation result. FIG. 17 is a maintenance policy determination diagram, and FIG. 17 is a redevelopment based on the evaluation result of the state in the existing pipe that is output in the automatic determination database system 200 for the existing pipe redevelopment policy based on the evaluation result of the state in the existing pipe in the pipe inspection of this embodiment. FIG. 18 is a policy judgment diagram, and FIG. 18 is a diagram of existing pipes output in the comprehensive existing pipe redevelopment policy automatic judgment database system 300. Development policy is a comprehensive judgment view. In these determination diagrams, the line type is changed for each of the cloth replacement section, the further life section, the existing pipe use section, the earth covering shortage section, the earth covering shortage influence section, and the cloth replacement influence section. These line types are determined corresponding to the determination information of the redevelopment policy data section obtained by the respective database systems.
In this way, the redevelopment policy becomes clear and easy to understand.
In the examples of FIGS. 16 to 18, the redevelopment policies are output with different line types, but may be output and displayed in different colors.

Further, as shown in FIG. 17, in the existing pipe rearrangement policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the in-pipe investigation of the present embodiment, the image is taken through an imaging means such as a TV camera. It is preferable to output and display the in-pipe survey image in the route section recorded in the image database file because the state in the existing pipe is more easily visually recognized.
It should be noted that such image data is determined automatically by the existing pipe re-repair policy automatic determination database system 300 based on the existing pipe re-rehabilitation policy general determination diagram of the present embodiment. It is even more preferable to output and display by linking with the database system 200.
Further, such image data may be output and displayed in the existing pipe redevelopment policy determination diagram based on the existing pipe capacity evaluation result by the existing pipe redevelopment policy automatic determination database system 100.

In addition, the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment shown in FIG. It has a function.
In the database file 101 of the existing pipe re-restoration policy automatic determination database system 100 based on the existing pipe capacity evaluation results, as shown in FIG. 2, the “ground height”, “pipe bottom height”, “gradient” obtained from the field survey were performed. It is also possible to input survey information such as the current status on the screen. When surveying information is input, the calculated values of “flow velocity” and “flow amount” indicating the capacity of the existing pipe are updated based on the input value.
For this reason, even when the status of existing pipes has changed significantly from the design contents of the sewer ledger diagram file 140 recorded at the time of construction of the sewer pipes due to the influence of ground subsidence, etc., the survey information should be entered on the screen as current values Therefore, it is possible to evaluate the capacity of existing pipes with high accuracy according to the current situation.

In addition, as described with reference to Table 5, the criteria for the redevelopment policy data in the existing pipe redevelopment policy automatic determination database system 200 based on the evaluation result of the state in the existing pipes by the in-pipe investigation of this embodiment are rank A , B, and C, and the method of redevelopment is determined according to the upper and lower limits of the defect rate of the corresponding rank. The lower limit range can be changed by inputting from the display screen (not shown).
For this reason, even when reviewing the criteria for determining the redevelopment policy, the redevelopment of the redevelopment policy in the data stored in the database file 201 can be processed in a lump. , Can save a lot of time.

That is, as described above, in the present invention, in the existing pipe redevelopment policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe internal inspection, the criteria for the redevelopment policy data as shown in Table 5 The redevelopment policy is automatically selected according to the above. For this reason, even if there is a change in the determination criterion, the redevelopment policy can be instantly indicated according to the determination criterion.
In this regard, a comparison with the conventional design method in the above-described embodiment described with reference to Tables 7 to 11 and FIGS. 13 to 15 will be described.

For example, in the above example, when the primary judgment until the redevelopment policy decision in the sewerage pipe renewal project and the work up to the secondary judgment are completed, the state in the existing pipe by the pipe survey of this embodiment shown in Table 5 In the sewage pipe renewal project when the judgment criteria of the redevelopment policy data in the automatic judgment database system 200 for existing pipes based on the evaluation result of the above are changed, and the primary judgment and secondary judgment are performed again Simulate the number of days and costs required to decide on a redevelopment policy. Regarding the increase in the number of artificial workers and personnel costs at that time, the existing pipes equipped with the existing design method and the automatic assessment database system for the existing pipes based on the evaluation results of the existing pipe state by the pipe inspection of the present invention. A comparison with the design method using the redevelopment design system is shown in FIGS.
In addition, the business scale per case is an area of 6.0 ha and a tube renewal extension of 1.5 km. In FIG. 19 and FIG. 20, “primary determination” and “secondary determination” correspond to “pipe renewal primary determination” and “pipe renewal secondary determination” in Table 7, respectively.

  As shown in FIG. 19 and FIG. 20, in the conventional design method, the increase required number of days is 4.5 days, the increase total artificial number is 8.2 people, and the increase total labor cost is 15.2. In the design method using the existing pipe redevelopment design system equipped with the automatic judgment database system for the existing pipe redevelopment policy based on the evaluation result of the state of the existing pipes by the in-pipe investigation of the invention, the increase required number of days is 1.8 days. The total number of man-made increase was 3.3, and the total increase in labor cost was 6.9. As described above, according to the existing pipe redevelopment design system including the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the existing pipe state by the pipe internal investigation according to the present invention, the increase required days is 40 % (1.8 ÷ 4.5 = 0.4), increased total artificial number is about 40% (3.3 ÷ 8.2 ≒ 0.402), and increased total labor cost is about 45% 6.9 ÷ 15.2≈0.454), it is possible to greatly reduce the number of days, the number of man-hours, and the cost.

In addition, the said Example was simulated by the area of 6.0ha. As described above, the actual amount of work that can be performed in the year is based on the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the existing pipe state by the pipe internal survey of the present invention. In the conventional design method, the area is 189.0 ha and the tube length is 47.3 km. In Yokohama City, it will be necessary to carry out the pipe renewal project in an area of about 200 ha and a pipe renewal extension of about 50 km per year.
Therefore, regarding the increased number of days and costs until the redevelopment policy decision in the sewer pipe renewal project when the primary judgment and secondary judgment are performed again, the evaluation result of the existing pipe state by the conventional design method and the pipe pipe investigation of the present invention The difference from the design method using the existing pipe redevelopment design system equipped with the automatic judgment database system for existing pipes based on the above is converted into the amount of work performed in one year. Then, for example, for the increase days, the value obtained by multiplying the difference in increase days (4.5−1.8 = 2.7) shown in FIG. 19 by about 30 times {(189 ha or 200 ha) ÷ 6 ha} is about 80 days. It becomes. Therefore, according to the design method using the existing pipe redevelopment design system equipped with the existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of the existing pipe by the pipe internal investigation of the present invention, the primary determination is performed again. When the secondary determination is performed again, for example, regarding the number of work days, it can be seen that 80 days in one year can be significantly reduced compared to the conventional design method.

  In addition, in the existing pipe redevelopment design system equipped with the automatic judgment database system for existing pipe redevelopment policy based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment, the longitudinal section that displays the longitudinal information of the existing pipe rod It is advisable to create a longitudinal view for redevelopment study, adding longitudinal information based on the design studied for redevelopment.

  In addition, by setting a plan range for each fiscal year, it is desirable to be able to calculate the estimated construction cost for the routes included in the area from the replacement, rehabilitation, construction method, and facility information. By doing so, for example, an approximate construction cost in units of 50 m mesh, 250 m mesh and the like can be calculated, and the work priority by mesh evaluation can be examined.

In addition, a construction ledger and construction history management function should be added. In this way, it is possible to smoothly record the redevelopment work ledger as the work information is organized upon completion of the redevelopment. And a record table corresponding to multi-year construction by single year construction or shield construction can be created.
For example, construction information can be input in units of spans as a construction record on a drawing by a simple operation. In addition, with respect to a span whose route at the time of execution has been changed from the plan, the pipe shape can be edited by a simple operation.
With regard to pipe diameter, extension, and construction method, construction records can be compared and confirmed in units of spans and spans, and construction history such as when the fabric is replaced after rehabilitation can be managed.

  In addition, as redevelopment completion information, it is better to be able to perform administrative distinction, process distinction, and district-by-district tabulation for improvement update area, improvement update extension, yearly progress (maintenance area, maintenance extension, amount), etc.

  In addition, it is better that the redevelopment area can be easily grasped by the browsing and searching functions in the map information system.

  The existing pipe redevelopment policy automatic determination database system based on the evaluation result of the state of existing pipes by the pipe internal inspection of the present invention is useful in a field where it is required to make a redevelopment plan for existing pipes.

It is a system schematic block diagram which shows the existing pipe redevelopment design system provided with the existing pipe redevelopment policy automatic judgment database system based on the evaluation result of the state in the existing pipe by the pipe internal investigation concerning one Embodiment of this invention. FIG. 2 is a data input correlation diagram of the existing pipe redevelopment design system shown in FIG. 1. It is the schematic of the data processing flow of the redevelopment design system of the existing pipe shown in FIG. It is a flowchart which shows the data creation procedure of the existing pipe re-repair policy automatic determination database system 100 based on the existing pipe capacity evaluation result. It is explanatory drawing which shows the specific content of a part in the determination criterion of the defective location used by this embodiment. It is explanatory drawing which shows the specific content of the other part in the determination criterion of the defective location used by this embodiment. It is explanatory drawing which shows the specific content of the further another part in the criteria for determination of the defect location used by this embodiment. It is explanatory drawing which shows the specific content of the further another part in the criteria for determination of the defect location used by this embodiment. It is explanatory drawing which shows the specific content of the further another part in the criteria for determination of the defect location used by this embodiment. Specificity of slack and meander scoring when scoring a defective state based on a TV camera in-pipe investigation image in the automatic determination database system for existing pipes based on the evaluation result of the state in the existing pipe by the in-pipe investigation of this embodiment It is explanatory drawing which shows a typical judgment criterion, (a) is explanatory drawing which shows the measurement location of a pipe | tube, (b) is a table | surface which shows the length of the measurement location of the pipe | tube used as the slack and meander with respect to a pipe diameter. It is a flowchart which shows the data preparation procedure of the existing pipe re-repair policy automatic determination database system 200 based on the evaluation result of the state in the existing pipe by the pipe investigation in this embodiment. It is a flowchart which shows the data creation procedure of the comprehensive existing pipe re-repair policy automatic determination database system 300 in this embodiment. A conventional design method and a design method using an existing pipe redevelopment design system with an existing pipe redevelopment policy automatic determination database system based on an evaluation result of the state of existing pipes by an in-pipe investigation according to an embodiment of the present invention It is the table | surface which showed the result which simulated and compared the days and expense until the redevelopment policy decision in the sewer pipe renewal project. It is the table | surface which extracted the principal part data in the table | surface shown in FIG. In the design method using the existing pipe redevelopment design system equipped with the automatic determination database system for existing pipe redevelopment policy based on the evaluation result of the state in the existing pipe by the pipe internal investigation of this embodiment FIG. 15 is a table showing, in addition to the data in FIGS. 13 and 14, simulation results of how much labor costs can be saved when 2/3 of the work is left to the design assistant. FIG. 5 is a diagram of existing pipe redevelopment policy determination based on the existing pipe capacity evaluation result output in the existing pipe capacity evaluation database system 100 based on the existing pipe capacity evaluation result. It is a redevelopment policy judgment figure based on the evaluation result of the state in the existing pipe output in the existing pipe redevelopment policy automatic judgment database system 200 based on the evaluation result of the state in the existing pipe by the pipe investigation of this embodiment. 5 is a comprehensive determination diagram for existing pipe redevelopment policy output in the comprehensive existing pipe redevelopment policy automatic determination database system 300. FIG. A conventional design method and a design method using an existing pipe redevelopment design system equipped with an existing pipe redevelopment policy automatic determination database system based on an evaluation result of the state of existing pipes by the pipe internal investigation according to the embodiment of the present invention Therefore, it is assumed that the criteria for re-establishment policy data in the re-establishment policy automatic judgment database system for existing pipes based on the evaluation results of the state of existing pipes by the in-pipe investigation of this embodiment has changed, and the primary judgment, It is the table | surface which showed the result which simulated and compared the increase required days of the work until the redevelopment policy decision in the sewer pipe renewal business when the next judgment was redone, the artificial number, and the labor cost. It is a table | surface which shows the breakdown of the artificial number shown in FIG.

Explanation of symbols

100 Existing pipe redevelopment policy automatic judgment database system 101, 201, 301 Database creation software and database file 110 Existing pipe specification data section 120 Existing pipe status, existing pipe flow capacity evaluation data section 130 Existing pipe flow capacity evaluation, etc. Redevelopment policy data section 140 based on results Sewer ledger diagram file 150 Pavement information file 160 Flow rate information file 200 Existing pipe redevelopment policy automatic judgment database system 210 based on the evaluation results of existing pipes based on in-pipe investigations TV camera in-pipe investigation images Defect state scoring data section 220 Based on the existing pipe condition evaluation data section 230 Redevelopment policy data section 240 based on the evaluation results of the existing pipe state based on the pipe survey Image database file 300 Overall existing pipe redevelopment policy Automatic judgment Over database system 310 overall redevelopment policy data unit

Claims (7)

While observing the survey image information inside the existing pipe imaged using the imaging means, the degree of failure is scored for each type of failure of the existing tube, and the predetermined failure judgment criteria ranked according to the score Based on the existing pipe joint part, main pipe part and mounting pipe part, select the type of failure, score the degree of failure, rank according to the score, and input the screen,
A stage of evaluating the state in the existing pipe by summing up the number of existing pipes corresponding to each rank for each predetermined item using the defective state in the joint part, the main pipe part and the mounting pipe part input on the screen;
Based on a predetermined determination criterion using the evaluation result, it is determined whether to use the existing pipe as it is, use it for further living, or replace the cloth, regarding the redevelopment policy for the existing pipe. And a step of preparing a policy for redevelopment of existing pipes based on the result of evaluation of the state of the existing pipes by the pipe inspection, and the stage of the existing pipes based on the result of the state evaluation of the existing pipes by the pipe inspection Re-maintenance policy automatic judgment database system.   The predetermined failure judgment criteria for inputting on the screen while observing the investigation image information are: pipe breakage of existing pipe, crack, pipe corrosion, joint displacement, intrusion water, joined state, closed state, mounting pipe protrusion, The degree of failure is scored and ranked according to the score for each type of failure of an existing pipe formed by arbitrarily combining slack meandering. An automatic judgment database system for existing pipe redevelopment policies based on the evaluation results of pipe conditions.   The evaluation of the state in the existing pipe is performed by counting the number of existing pipes corresponding to each rank for each defect type of the existing pipe using the value input on the screen, and using the total value, According to the in-pipe investigation according to claim 1 or 2, wherein the defect type is calculated by calculating the defect rate by summing up the number of defects for each rank for each defect type, slack meander, intrusion water, and attachment pipe defect An automatic judgment database system for existing pipe redevelopment policy based on the evaluation results of the state of existing pipes.   The criteria for re-establishment policy for existing pipes based on the evaluation results of the existing pipe conditions are calculated for each type of defect in the main pipe, slack meandering, intrusion water, and attachment pipes when evaluating the condition in the existing pipe. Using the calculated number of defects by rank and the result of the defect rate, for each type of defect in the main, slack meandering, intrusion water, and attachment pipe, the presence / absence of the corresponding rank and the defect rate range 4. The method according to any one of claims 1 to 3, characterized in that it is determined whether to change the cloth, to use a further life, or to use an existing pipe as it is, according to a condition in combination with A database system for automatic judgment of existing pipe re-maintenance policies based on the evaluation results of existing pipe conditions in the pipe inspection.   Survey image information by the imaging means in the route section of the existing pipe redevelopment policy data is linked and output to the existing pipe redevelopment policy data in the database where the existing pipe redevelopment policy data is created 5. A database system for automatically determining an existing pipe re-maintenance policy based on an evaluation result of a state in an existing pipe by an in-pipe investigation according to any one of claims 1 to 4.   Redevelopment policy for at least part of existing pipe use sections, refurbishment sections, cloth replacement sections, etc. in the predetermined route area based on the existing pipe redevelopment policy data based on the evaluation results of the state of existing pipes in the pipe survey The data is printed or displayed in a map and image format or displayed on a monitor. The automatic maintenance policy for existing pipes based on the evaluation results of the state in the existing pipes according to the pipe inspection according to any one of claims 1 to 4. Judgment database system.   The judgment criterion of the redevelopment policy data can be changed by a screen input. The existing pipe based on the evaluation result of the state in the existing pipe by the pipe inspection according to any one of claims 1 to 4 and 6, Re-maintenance policy automatic judgment database system.

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