KR102571304B1 - System for guiding Foam Injection and Thrust of Earth Pressure Balance TBM - Google Patents

Abstract

The present invention relates to an earth pressure balanced TBM additive injection and excavation guide system and guide method, and more particularly, a measuring unit for measuring a determination variable, thrust, additive flow rate, and additive air amount through a TBM sensor during excavation; a decision data collection unit that collects decision variable data measured by the measuring unit; decision means for generating decision data by judging rise, hold, and fall for the collected decision variables at every decision cycle; and an analysis means for calculating the thrust, additive flow rate, and additive mixture adjustment data based on the determination data.

Description

Earth pressure balanced TBM additive injection and excavation guide system and guide method {System for guiding Foam Injection and Thrust of Earth Pressure Balance TBM}

The present invention relates to an earth pressure balanced TBM additive injection and excavation guide system and guide method.

The tunnel excavation method is largely divided into a conventional tunneling method represented by NATM (New Austrian Tunneling Method) and a mechanized tunneling method represented by Open and Shield TBM (Tunnel Boring Machine) method. Existing conventional tunnel construction methods had many problems in terms of labor cost, construction period, and safety.

In order to solve this problem, a mechanized tunnel method is being used a lot. The mechanized tunnel construction method is mechanically stable because it is excavated with a circular cross section, and it is an eco-friendly tunnel excavation method that can secure stability and minimize noise and vibration by minimizing ground deformation because it is excavation without vibration and blast.

Therefore, recent excavation of tunnels and underground spaces is focused on subways, power conduits, communication tunnels, etc. by replacing the existing blasting method for the purpose of increasing worker safety, reducing civil complaints due to noise and vibration, and reducing air and air costs. Mechanized construction by TBM is on the rise.

In general, the blasting method in tunnel construction is difficult to quickly cope with noise, vibration, and deformation after excavation. However, TBM can be applied to various grounds such as downtown areas, soft ground, and river bottoms with low noise and no vibration, and tunnels are constructed by excavating the inside of the cylinder by pressing a cylinder with a sharp circumference into the face.

However, in the process of excavating a tunnel using a tunnel boring machine, unexpected safety accidents may occur depending on various conditions of the ground, and excavation is stopped, resulting in a problem in that the cost required for tunnel excavation rapidly increases. Moreover, problems occur more frequently during the construction process according to the recent trend of tunnel lengthening.

In order to solve this problem, an attempt has been made to simulate the excavation process by a tunnel boring machine in advance through numerical analysis. However, numerical analysis has limitations in reproducing the on-site state by converting the rock properties of the ground and the shape of the structure, so there is a problem of low accuracy. By analyzing the excavation process by the tunnel boring machine more accurately, it is possible to predict all the actual tunnel construction processes, and by controlling the operating conditions of the tunnel boring machine for each section based on the predicted results, it is safer and more efficient. There is an urgent need to quickly construct tunnels.

In addition, in the case of EPB (Earth Pressure Balance) TBM, foam agent, water, and air are used to maintain the face pressure, smooth excavation and top dressing, and minimize wear of cutting tools (disc cutter or cutter bit). The blended bubble form is injected into the excavation surface and chamber. 1 shows a configuration diagram of an earth pressure balanced TBM. Figure 2 shows a photograph showing the front view of foam spraying of the earth pressure balance type TBM. Figure 3 shows a photograph in which blockage has occurred in the equipment. As shown in FIG. 1, the earth pressure balance type TBM (1) is composed of a cutter head (2) equipped with a plurality of cutting tools (3), a chamber (4), a trust jack (6), etc., and a shield The excavated soil or burr is filled in the TBM rear chamber (4) to support the excavated surface, excavate the TBM with segment reaction force, and use the screw conveyor (5) to take out the soil and control the amount of soil to be taken out to control the earth pressure in the chamber.

In the earth pressure balance type TBM (1), in order to facilitate excavation and earthing, a sample (soil) is excavated by putting foam into the field. This foam is composed of a mixture of foam agent, water and air, and has various factors such as the concentration of foam agent to the entire foam, the mixing ratio of water and air, and the ratio of foam to excavated ground area. you will see the difference

In the case of EPB TBM, it is composed of foam or 'Polymer agent + water' in the form of a mixture of 'Foam agent + Water + Air' to maintain the pressure at the end, smooth excavation and earthing, and minimize wear on the disc cutter (or cutter bit). Polymer (commonly known as TBM additive) is injected into the excavation surface and chamber.

Depending on the ground characteristics, the mixing of additives affects the TBM excavation speed, the degree of load of equipment, the maintenance of face pressure, and the degree of wear of cutting tools. In order to calculate the optimal additive mixing ratio, a slump test or vane test, visual observation, etc. is performed on the sample mixed with additives.

Before TBM excavation, the approximate design mixing ratio is calculated through the relevant experiments, but during actual operation, not only these experiments but also changes in ground conditions and changes in equipment variables (thrust, torque, excavation speed) are grasped in real time to provide a comprehensive It is necessary to adjust the mixing ratio by judgment (as shown in FIG. 3, if the mixing ratio is not properly selected, equipment blockage, damage, impossibility of excavation due to jamming, excessive inflow of groundwater, etc.).

To summarize the main terms for additive formulation,

1) CF: Means the concentration of the foam agent in the foam solution (foam agent + water) (typically 0.5~5.0%)

2) FIR (Foam Injection Ratio): Foam (Foam solution + air) usage (%) for excavation soil (generally, using a wide range of 20 to 70%, it is determined flexibly according to the ground)

3) FER (Foam Expansion Ratio): It refers to the ratio of compressed air injected to the foam solution. Wet foam and dry foam are classified according to FER (generally 5 to 30, use a larger value for clay ground)

4) PIR (Polymer Injection Ratio): Usage (%) of polymer (including anti-clogging agents, etc.) to excavated soil

means

Figure 4a shows a photograph of performing a slump test and a vane shear test after stirring a foam prepared with a certain mixture with a soil sample under atmospheric pressure. As shown in FIG. As the test is performed under atmospheric pressure, there is a problem that the confinement pressure cannot be simulated because it is different from the state of the TBM excavation surface and the soil chamber under constant pressure. In addition, as the test conditions (atmospheric pressure) and the conditions of the actual drilling surface (constant pressure) are different, the optimal values of the foam expansion ratio (FER) and foam injection ratio (FIR), which are the main foam mixing design factors cannot be predicted, and all performance-related variables such as excavation performance and abrasion of soil TBM cannot be predicted. In addition, in the case of the slump test, there is a problem in that it is difficult to predict a small difference because the result value is different depending on the degree of compaction among the sample compositions.

In addition, FIG. 4B shows a photograph of measuring the shear strength of a sample by performing a vane shear test. As mentioned above, this method is also different from the state of the TBM excavation surface and soil chamber under constant pressure as the test is performed under atmospheric pressure, so the confinement pressure cannot be simulated, and the test conditions (atmospheric pressure) and actual excavation As the surface conditions (constant pressure) are different, it is impossible to predict the optimal values of the main foam mixture design factors, Foam Expansion Ratio (FER) and Foam Injection Ratio (FIR), and the excavation performance of the soil TBM There is a problem in that all performance-related variables such as wear and tear cannot be predicted.

Therefore, although it is very important to measure the optimal blending ratio of foam, conventionally, the only foam-related experiment is a slump test on a sample mixed with foam, which is performed under a low atmospheric pressure condition, so it is performed in an actual TBM chamber (pressure state). There is a problem in that the optimal foam mixing ratio cannot be found because the state itself is different from the sample in which the foam is mixed in.

Korea Patent Registration No. 10-1322125 Korean Patent Registration No. 10-1293337 Korean Patent Publication No. 10-2018-0116922

Therefore, the present invention has been made to solve the above conventional problems, and according to an embodiment of the present invention, foam and polymer, which are additives used in excavation of Earth Pressure Balance (EPB) TBM, and thrust, which is an operating variable Its purpose is to provide a system that presents a user guide for Thrust.

According to an embodiment of the present invention, the TBM excavation risk (cutterhead (cutterhead The purpose is to provide an earth pressure balanced TBM additive injection and excavation guide system and guide method that can prevent blockage of cutterhead, increase in equipment load), and the like.

In addition, according to an embodiment of the present invention, smooth excavation is possible because it is possible to prepare for TBM excavation risk situations by immediately responding to variable changes during real-time TBM operation, and 1) TBM cutter head torque and screw through appropriate additive mixing and excavation speed adjustment Equipment loads such as screw conveyor torque can be minimized, and 2) the occurrence of reasons for stopping drilling such as clogging in the chamber, equipment jamming, damage, and excessive wear of cutting tools can be controlled through appropriate additive mixing and drilling speed adjustment. The purpose is to provide an earth pressure balanced TBM additive injection and excavation guide system and guide method that can prevent excessive groundwater inflow and ground subsidence through proper additive formulation.

On the other hand, the technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

A first object of the present invention is an earth pressure balanced TBM guide system, comprising: a measurement unit for measuring a determination variable, thrust, additive flow rate, and additive air amount through a TBM sensor during excavation; a decision data collection unit that collects decision variable data measured by the measurement unit; decision means for generating decision data by judging rise, hold, and fall for the collected decision variables at every decision period; And analysis means for calculating the thrust, additive flow rate, and additive mixture adjustment data based on the determination data; it can be achieved as an earth pressure balanced TBM additive injection and drilling guide system comprising a.

and a setting unit configured to set the determination period and a collection period for collecting the determination variable data in the determination data collection unit, wherein the determination variables include drilling speed, TBM torque, TBM gear oil temperature, and center plate temperature. It may be characterized in that it is at least two or more of , and the defect state data calculated by the defect state calculation unit.

In addition, the break state data may be characterized in that at least one of breakout slump experiment result data and clay temperature data.

And, the setting unit sets a holding range determined to be maintained for each decision variable, and the determining means determines to be maintained if within the maintenance range, to fall if it is less than the maintenance range, to rise if it exceeds the maintenance range, and in the first section of the judgment cycle. With the average value of the decision variable data as the reference value, the average value of the decision variable data in the next decision cycle is compared with the reference value to determine rise, hold, or fall, and if the maintenance decision is maintained a specific number of times or is judged to be rise or fall .

In addition, by comparing the average value of the decision variable data collected in the immediately preceding section of the period shorter than the above decision period and the collected decision variable data, it is judged as a sudden rise if it rises more than the set ratio, and it is judged as a sudden descent if it falls more than the set ratio. It may be characterized in that it further includes;

And the analysis means is based on the slump experiment result data, the clay temperature data, the TBM torque, and the judgment data on the excavation speed, or based on the slump experiment result data, the TBM torque, and the judgment data on the excavation speed, Alternatively, it may be characterized in that adjustment data of the thrust, additive flow rate, and additive mixture are calculated based on TBM torque, gear oil temperature data, and determination data on excavation speed.

A second object of the present invention is an earth pressure balanced TBM guide method, comprising the steps of measuring a determination variable, thrust, additive flow rate, and additive air amount through a TBM sensor when the measuring unit is excavated; collecting decision variable data measured by the measuring unit at each collection period by a decision data collection unit; generating decision data by determining, by the decision means, rising, maintaining, or falling the collected decision variables for each decision cycle; and calculating, by an analysis means, the thrust, the additive flow rate, and the additive mixture adjustment data based on the determination data, wherein the setting unit includes the determination period and a collection period in which the determination data collection unit collects determination variable data. , and the determination variable is at least two or more of excavation speed, TBM torque, TBM gear oil temperature, center plate temperature, and break state data calculated by the break state calculation unit, and the break state data is, break down slump experiment It can be achieved as an earth pressure balanced TBM additive injection and drilling guide method, characterized in that at least one of the result data and the clay temperature data.

And, in the step of setting the maintenance range determined by the maintenance for each determination variable, and generating the determination data, the determination unit maintains the maintenance range if it is within the maintenance range, decreases if it is less than the maintenance range, and rises if it exceeds the maintenance range. , and using the average value of the decision variable data in the first section of the decision cycle as the reference value, the average value of the decision variable data in the next decision cycle and the reference value are compared to determine rise, hold, or fall, and the maintenance decision is maintained a certain number of times. or, if it is determined as rising or falling, the reference value may be reset, and the determination may be made by comparing with the previous determination section.

The sudden rise/fall judgment unit compares the average value of the decision variable data collected in the immediately preceding section of the period shorter than the judgment period and the collected decision variable data, and judges it as a sudden rise when it rises more than a set ratio, and falls more than a set ratio. It may be characterized in that it further includes;

And in the step of calculating the adjustment data, the analysis means is based on the slump experiment result data, the clay temperature data, the TBM torque, and the determination data for the excavation speed, or the slump experiment result data, the TBM torque, and the excavation speed It may be characterized in that the adjustment data of the thrust, the additive flow rate, and the additive mixture are calculated based on the determination data for or based on the determination data for the TBM torque, the gear oil temperature data, and the excavation speed.

According to the earth pressure balanced TBM additive injection and excavation guide system and guide method according to an embodiment of the present invention, the additives used in earth pressure balance (EPB) TBM excavation are foam and polymer and the operating variable thrust. A user guide can be provided.

According to the earth pressure balanced TBM additive injection and excavation guide system and guide method according to an embodiment of the present invention, guidelines for additives (foam, polymer) and thrust (upward/ maintenance/downward) to prevent TBM excavation risk (cutterhead blockage, equipment load increase) and the like.

In addition, according to the earth pressure balanced TBM additive injection and excavation guide system and guide method according to an embodiment of the present invention, it is possible to prepare for TBM excavation risk situations by immediately responding to variable changes during real-time TBM operation, enabling smooth excavation, 1) appropriate Equipment loads such as TBM cutter head torque and screw conveyor torque can be minimized through additive mixing and excavation speed adjustment. It is possible to control the occurrence of reasons for excavation stoppage, such as excessive wear of cutting tools, and has the effect of preventing excessive groundwater inflow and ground subsidence through proper additive mixing.

On the other hand, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the invention serve to further understand the technical idea of the present invention, the present invention is limited only to those described in the drawings. and should not be interpreted.
1 is a configuration diagram of an earth pressure balanced TBM;
Figure 2 is a photograph showing the foam injection view of the earth pressure balance type TBM,
Figure 3 is a photograph in which occlusion has occurred in the equipment;
Figure 4a is a photograph of performing a slump test and a vane shear test after stirring a foam prepared with a certain mixture with a soil sample in an atmospheric pressure state,
Figure 4b is a photograph of measuring the shear strength of a sample by performing a vane shear test;
5 is a block diagram of an earth pressure balanced TBM additive injection and excavation guide system according to an embodiment of the present invention;
6 is a flow chart of an earth pressure balanced TBM additive injection and excavation guide method according to an embodiment of the present invention;
7 is an example of a state decision criteria table for each decision variable according to an embodiment of the present invention;
8 is an example of displaying rapid rise and fall in the determination data collection unit according to an embodiment of the present invention;
9 is a flowchart of a method for determining the increase, maintenance, and decrease of a decision variable according to an embodiment of the present invention;
10 shows an example of a display screen of a determination data collection unit according to an embodiment of the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be directly formed on the other element or a third element may be interposed therebetween. Also, in the drawings, the thickness of components is exaggerated for effective description of technical content.

Embodiments described in this specification will be described with reference to cross-sectional views and/or plan views, which are ideal exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Accordingly, the shape of the illustrated drawings may be modified due to manufacturing techniques and/or tolerances. Therefore, embodiments of the present invention are not limited to the specific shape shown, but also include changes in the shape generated according to the manufacturing process. For example, a region shown at right angles may be rounded or have a predetermined curvature. Accordingly, the regions illustrated in the drawings have attributes, and the shapes of the regions illustrated in the drawings are intended to illustrate a specific shape of a region of a device and are not intended to limit the scope of the invention. Although terms such as first and second are used to describe various elements in various embodiments of the present specification, these elements should not be limited by these terms. These terms are only used to distinguish one component from another. Embodiments described and illustrated herein also include complementary embodiments thereof.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprises' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, several specific contents are prepared to more specifically describe the invention and aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not greatly related to the invention are not described in order to prevent confusion for no particular reason in explaining the present invention.

Hereinafter, the configuration, function, and guide method of the earth pressure balanced TBM additive injection and excavation guide system according to an embodiment of the present invention will be described.

First, FIG. 5 shows a block diagram of an earth pressure balanced TBM additive injection and excavation guide system according to an embodiment of the present invention. And Figure 6 shows a flow chart of an earth pressure balanced TBM additive injection and excavation guide method according to an embodiment of the present invention.

As shown in FIG. 5, the earth pressure balanced TBM additive injection and drilling guide system 100 according to an embodiment of the present invention includes a setting unit 10, a measuring unit 20, a calculating unit 30, and a determination data collection unit. It can be seen that it can be configured to include (40), determination means 50, steep rise and fall determination unit 60, analysis means 70, control unit 80, and the like.

The setting unit 10 is configured so that the user can set a determination period (determination period), a collection period, and a maintenance range determined as maintenance.

Calculation of the judgment cycle (section) is, for example, excavation speed for TBM, a common soil section for excavation of 1 ring (the distance that must be excavated to assemble one set with the width of one set of segments, usually 1.4 to 1.5 m). is about 20 to 30 mm/min, and the net excavation time may take about 50 to 60 minutes. The width of the TBM chamber varies depending on the size of the TBM, but about 0.5 to 1.0 m, even if excavated with the wrong additive mixture for about 10 minutes, about half of the chamber is filled with improper bracing, causing problems such as equipment blockage. Therefore, the judgment interval for '1 segment' is set to '5 minutes', but it can be calculated by changing it in the setting unit according to the situation at the site.

In addition, the measurement unit 20 measures the determination variable, thrust, additive flow rate, and additive air amount through the TBM sensor during excavation. In addition, the decision data collection unit 40 is configured to collect the decision variable data measured by the measuring unit 20 at each collection period.

These determination variables may be excavation speed, TBM torque, TBM gear oil temperature, center plate temperature, and deburring state data calculated by the breaking state calculation unit 30.

The barrack state data is barrack slump experiment result data and clay temperature data.

TBM excavation speed, TBM torque, TBM gear oil temperature, real-time injection flow rate and air volume for each TBM additive injection nozzle can be obtained directly from the TBM sensor data (S1-1).

The slump test result data can be obtained by conducting a slump test using buckling force during excavation, and the soil temperature It can be obtained by measuring the temperature using the force during excavation (S1-2).

Among the variables that can determine the degree of equipment load and various situations, the variables that can be immediately identified from the TBM sensor are TBM torque, drilling speed, and gear oil temperature (or center plate temperature, which may vary among TBM manufacturers). It can be obtained as raw data once every second (collection period) (S2).

In addition, it can be determined together by conducting a slump test and measuring the temperature of the clay using the force discharged from the belt conveyor of the TBM. This can be done periodically or non-periodically at the discretion of the site.

Then, the determination unit 50 determines rise, hold, and fall of the collected determination variables for each determination period to generate determination data (S3).

In addition, the analysis means 70 calculates adjustment data for thrust, additive flow rate, and additive formulation based on these determination data (S4), and the controller 80 calculates thrust, additive inflow amount, and mixing ratio based on these adjustment data. It is controlled (S5).

The determination unit 50 determines whether to ascend, maintain, or descend (decrease) based on the maintenance range determination criterion set in the setting unit 10 .

That is, each average value of each decision variable within the current decision section is compared with the reference value to determine rise, maintenance, or decrease (decrease). 7 illustrates an example of a table of state determination criteria for each determination variable according to an embodiment of the present invention.

That is, for example, if the difference between the calculated and collected depravity state within the current judgment range and the reference value is within -2.5 to 2.5cm, it is maintained; will do In addition, if the difference between the calculated and collected clay temperature and the reference value within the current judgment section is maintained within -2.5 to 2.5 degrees, it is judged to be maintained, if it rises by 2.5 degrees or more, it rises, and if it decreases by more than -2.5 degrees, it is judged to fall. If the difference between the average value of the torque data collected within the current judgment section and the reference value is within -10 to 10%, it is determined to be maintained, if it is increased by 10% or more, it is judged to be raised, and if it is decreased by more than -10%, it is judged to be lowered. In addition, if the difference between the average value of the excavation speed collected in the current judgment section and the reference value is within -10 to 10%, it is determined to be maintained, if it is increased by 10% or more, it is judged to be increased, and if it is decreased by more than -10%, it is judged to be decreased.

8 illustrates an example in which a rapid rise and a rapid descent are displayed in the determination data collection unit 40 according to an embodiment of the present invention. The rapid rise/fall determination unit 60 compares the average value of the decision variable data collected in the immediately preceding section of the period shorter than the decision period with the currently collected decision variable data, and determines that the sudden rise occurs when the set ratio or higher rises, and the set ratio In the case of an abnormal descent, it may be determined as a rapid descent and display the determination result through the display of the determination data collection unit 40 .

In other words, even within the judgment section (5 minutes), it may not be detected when it rises or falls rapidly (it may fall again after a sharp rise, and the average value may come out similarly). It can be set to 2.5 minutes, which is half of the 5-minute interval (15 when data is received every 10 seconds), and if this value rises by more than 25% compared to the average of the previous 15 data, a rapid rise message is displayed, compared to the average of the previous 15 data If the grade number drops by more than 25%, a sudden drop message can be displayed. This ‘25%’ criterion makes it possible to input separately so that appropriate responses can be made according to the situation at the site.

9 is a flowchart of a method for determining the rise, hold, and fall of a decision variable according to an embodiment of the present invention. And Figure 10 shows an example of a display screen of the determination data collection unit according to an embodiment of the present invention.

With the average value of the decision variable data in the first section of the decision cycle as the reference value, rising, maintaining, or falling can be determined by comparing the average value of the decision variable data and the reference value in the next decision cycle.

In addition, when the maintenance determination is maintained a specific number of times or is determined to be rising or falling, the reference value is reset, and the determination is made by comparing with the previous determination section.

That is, as shown in FIG. 9, from the TBM sensor, excavation speed, torque, and gear oil data are measured, slump experiment result data, and soil temperature data can be calculated, and the determination data collection unit measures data for each collection period. Wow, experimental data (which may not come in) will be collected.

In the first decision section, the average value for each decision variable of each collected data is used as the reference value, and the average value and the reference value in the next decision section are compared to determine rise, maintenance, and descent.

At this time, if it is determined that it is rising or falling, the determination is reset, that is, the reference value is reset, and the average value of the next determination means and the average value of the previous determination numbers are compared with each other to determine rise, fall, or maintenance. And if it is determined to be maintained, the average value in the next judgment section is compared with the reference value, and if it is judged to be rising or falling at this time, the judgment is reset, that is, the reference value is reset, and the average value of the next judgment means and the average value of the previous judgment number are reset. Ascension, descent, and maintenance are judged by comparing each other, and if another maintenance is judged, the average value in the next judgment section is compared with the reference value and maintained two or more times. Determination is reset in all of the holdings, and the average value of the next decision means and the average value of the previous decision number are compared with each other to determine rise, fall, and hold.

In addition, the analysis means can calculate thrust, additive flow rate, and adjustment data of additive mixture based on slump experiment result data (burst state), clay temperature data, TBM torque, and drilling speed determination data (first case). ).

Alternatively, adjustment data of thrust, additive flow rate, and additive mixture may be calculated based on the slump experiment result data, the TBM torque, and the determination data on the drilling speed (second case).

Alternatively, adjustment data of thrust, additive flow rate, and additive mixture may be calculated based on TBM torque, gear oil temperature data, and drilling speed determination data (case 3).

For example, in Case 1, if 1) it is determined that 1) deterioration of blockage, maintenance of clay temperature, increase/maintenance of torque, and increase of excavation speed, it is determined that there is a risk of blockage, FIR, FER, and PIR are maintained, and thrust is lowered. 2) If it is judged as lowering the blockage state, maintaining the clay temperature, increasing/maintaining the torque, and decreasing/maintaining the excavation speed, it is judged to be a risk of blockage, and the FIR is raised, the FER is lowered, the PIR is lowered, and the thrust is maintained. 3) If it is determined that the burok state is lowered, the clay temperature is maintained, the torque is increased, and the excavation speed is reduced/maintained, the possibility of blockage is determined and the FIR is maintained, the FER is lowered, the PIR is lowered, and the thrust is maintained. , 4) If it is judged that the breaking condition is maintained, the soil temperature is maintained, the torque is increased, and the excavation speed is increased, the mixing ratio is determined to be FIR increased, FER maintained, PIR maintained, and the thrust can be controlled so that the thrust is lowered. If it is determined as increase, clay temperature increase/maintain/decrease, torque increase, excavation speed decrease/maintenance, it is judged as a change in mixing ratio to maintain FIR, increase FER, increase PIR, and control to maintain thrust.

In addition, in the second case, for example, 1) in the case of decrease in thrust state, increase in torque, decrease / maintenance of excavation speed, it is determined that it is possible to induce blockage, and FIR is increased, FER is decreased, and PIR is decreased, and the thrust can be controlled to be maintained , 2) In the case of maintaining the holding state, increasing the torque, and decreasing/maintaining the excavation speed, it is judged as a possibility of blockage and can be controlled to increase the FIR, maintain the FER, maintain the PIR, and maintain the thrust, 3) increase the holding state, torque In the case of decrease/maintenance or increase in excavation speed, it is judged as a change in the compounding ratio, and FIR is maintained, FER is increased, and PIR is increased, and the thrust can be controlled to be maintained.

And in the third case, for example, 1) In the case of torque increase, gear oil temperature increase/maintenance/decrease, and drilling speed decrease/maintenance, the risk of blockage is determined and the FIR is increased, the FER is decreased, the PIR is decreased, and the thrust is maintained 2) In the case of torque reduction/maintenance, gear oil temperature rise, and excavation speed increase, it is judged as the possibility of blockage, FIR maintained, FER lowered, PIR maintained, and thrust can be controlled to be maintained, 3 ) In the case of torque reduction/maintenance, gear oil temperature reduction/existence, and excavation speed reduction, it is judged as an increase in ground strength, FIR maintenance, FER maintenance, PIR maintenance, and thrust can be controlled to increase.

In addition, the device and method described above are not limited to the configuration and method of the above-described embodiments, but all or part of each embodiment is selectively combined so that various modifications can be made. may be configured.

1: earth pressure balance type TBM
2: cutter head
3: Cutting tool
4: chamber
5: screw conveyor
6: Trust Jack
10: setting unit
20: measuring part
30: Break state calculation unit
40: judgment data collection unit
50: judgment means
60: Rapid rise/fall judgment unit
70: analysis means
80: control unit
100: Earth pressure balanced TBM additive injection and drilling guide system

Claims (10)

As an earth pressure balanced TBM guide system,
During excavation, a measurement unit for measuring the determination variable, thrust, additive flow rate, and additive air amount through the TBM sensor; a decision data collection unit that collects decision variable data measured by the measurement unit; decision means for generating decision data by judging rise, hold, and fall for the collected decision variables at every decision period; Analysis means for calculating the thrust, the additive flow rate, and the additive mixing adjustment data based on the determination data; And a setting unit for setting the determination period and a collection period for collecting decision variable data in the determination data collection unit;
The determination variable is at least two or more of excavation speed, TBM torque, TBM gear oil temperature, center plate temperature, and break state data calculated by the break state calculation unit,
The burok state data is at least one of buruck slump experiment result data and clay temperature data,
The setting unit sets a holding range determined by holding for each decision variable,
The determination means,
If it is within the above maintenance range, it is judged to be maintained, if it is less than the maintenance range, to descend, and if it exceeds the maintenance range, it is determined to rise,
Using the average value of the decision variable data in the first section of the decision cycle as the reference value, comparing the average value of the decision variable data and the reference value in the next decision cycle to determine rising, maintaining, or falling;
An earth pressure balanced TBM additive injection and drilling guide system, characterized in that when the maintenance decision is maintained a certain number of times or is determined to rise or fall, the reference value is reset and compared with the previous judgment section.
delete delete delete According to claim 1,
Comparing the average value of the decision variable data collected in the immediately preceding section of the period shorter than the decision period and the collected decision variable data, it is judged as a sudden rise if it rises more than the set ratio, and it is judged as a sudden descent if it falls more than the set ratio Earth pressure balanced TBM additive injection and drilling guide system, characterized in that it further comprises;
According to claim 5,
The analysis means,
Based on the slump experiment result data, the clay temperature data, the TBM torque, and the judgment data for the excavation speed,
Based on the slump experiment result data, the TBM torque, and the judgment data for the drilling speed, or
An earth pressure balanced TBM additive injection and drilling guide system, characterized in that for calculating the adjustment data of the thrust, additive flow rate, and additive mixture based on TBM torque, gear oil temperature data, and drilling speed determination data.
As an earth pressure balanced TBM guide method,
Measuring the determination variable, thrust, additive flow rate, additive air amount through the TBM sensor when the measurement unit is excavated;
collecting decision variable data measured by the measuring unit at each collection period by a decision data collection unit;
generating decision data by determining, by the decision means, rising, maintaining, or falling the collected decision variables for each decision cycle; and
Calculating, by an analysis means, the thrust, the additive flow rate, and the additive formulation adjustment data based on the determination data;
The setting unit sets the determination cycle and the collection cycle for collecting decision variable data in the determination data collection unit;
The decision variable is,
At least two or more of drilling speed, TBM torque, TBM gear oil temperature, center plate temperature, and break state data calculated by the break state calculator,
The earth pressure balanced TBM additive injection and drilling guide method, characterized in that the buckwheat state data is at least one of buckwheat slump experiment result data and clay temperature data.
According to claim 7,
The setting unit sets a holding range determined by holding for each decision variable,
In the step of generating the judgment data, the judgment means determines to be maintained if within the maintenance range, to fall if less than the maintenance range, and to rise if exceeding the maintenance range;
Using the average value of the decision variable data in the first section of the decision cycle as the reference value, comparing the average value of the decision variable data and the reference value in the next decision cycle to determine rising, maintaining, or falling;
Earth pressure balanced TBM additive injection and drilling guide method, characterized in that when the maintenance decision is maintained a certain number of times or is determined to rise or fall, the reference value is reset and compared with the previous judgment section.
According to claim 8,
The sudden rise/fall judgment unit compares the average value of the decision variable data collected in the immediately preceding section of the period shorter than the judgment period and the collected decision variable data, and judges it as a sudden rise when it rises more than a set ratio, and falls more than a set ratio. Earth pressure balanced TBM additive injection and excavation guide method, characterized in that it further comprises;
According to claim 7,
In the step of calculating the adjustment data,
The analysis means,
Based on the slump experiment result data, the clay temperature data, the TBM torque, and the judgment data for the excavation speed,
Based on the slump experiment result data, the TBM torque, and the judgment data for the drilling speed, or
An earth pressure balanced TBM additive injection and drilling guide method, characterized in that for calculating the adjustment data of the thrust, additive flow rate, and additive mixture based on TBM torque, gear oil temperature data, and drilling speed determination data.

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