CN115488114A - Cleaning device and method for tunnel drainage system and cleaning hemisphere structure design method - Google Patents
Cleaning device and method for tunnel drainage system and cleaning hemisphere structure design method Download PDFInfo
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- CN115488114A CN115488114A CN202210877679.7A CN202210877679A CN115488114A CN 115488114 A CN115488114 A CN 115488114A CN 202210877679 A CN202210877679 A CN 202210877679A CN 115488114 A CN115488114 A CN 115488114A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000013461 design Methods 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000009792 diffusion process Methods 0.000 claims description 37
- 238000007689 inspection Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
- B08B9/045—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes the cleaning devices being rotated while moved, e.g. flexible rotating shaft or "snake"
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method. The cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, an inverted filter layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section. The liquid injection pipe is formed by splicing a plurality of pipe sections. The invention is suitable for circular pipelines with various diameters of a tunnel drainage system, can realize long-distance pipeline washing and cleaning, improves tunnel maintenance efficiency and reduces maintenance cost. Simultaneously, through the design to wasing hemisphere constructional device, make it can reach best cleaning performance, can also practice thrift a large amount of washing liquid, satisfy green construction, respond resources are saved and advocate.
Description
Technical Field
The invention belongs to the field of tunnel drainage systems, and particularly relates to a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method.
Background
Tunnel drainage system often increases along with the operation age, and drainage pipe blocks up more seriously, leads to tunnel drainage system to be obstructed or become invalid completely, and then causes tunnel structure diseases such as crack, percolating water to appear, and serious meeting causes tunnel structure to be in high water pressure state, and tunnel lining structure appears falling the piece or collapses, causes certain threat to the current safety of tunnel. At present, the tunnel drainage pipeline is cleaned by injecting high-pressure water or other descaling solutions, and two pipeline dredging and cleaning technologies are generally adopted: 1. chemical cleaning: using acid liquor, alkali liquor or organic solvent; 2. physical cleaning: mechanical dredging, water washing and dredging, and air-water pulse. Because of the drainage pipe size differs, utilize current single cleaning equipment can not adapt to all types of drainage pipe scale removal, also only be fit for local cleaning, can't realize long distance pipeline cleaning.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cleaning device and a cleaning method for a tunnel drainage system and a cleaning hemisphere structure design method aiming at the defects of the background art. The invention is suitable for circular pipelines with various diameters of a tunnel drainage system, and can simultaneously realize long-distance pipeline washing and cleaning, improve tunnel maintenance efficiency and reduce maintenance cost; simultaneously, through the design to wasing hemisphere constructional device, make it can reach best cleaning performance, can also practice thrift a large amount of washing liquid, satisfy green construction, respond resources are saved and advocate.
The invention adopts the following technical scheme for solving the technical problems:
the utility model provides a tunnel drain pipe belt cleaning device, includes the scavenge pipe, and the scavenge pipe is including annotating the liquid pipe, it is provided with flexible pipe to annotate liquid pipe week side intercommunication, the flexible pipe is kept away from the one end threaded connection who annotates the liquid pipe and is had the washing hemisphere.
Furthermore, the cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, an inverted filter layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section.
Furthermore, the liquid injection pipe is formed by splicing a plurality of pipe sections.
A method for cleaning a tunnel drain pipe comprises the following steps:
s1, determining the position of a drain pipe and performing drilling inspection, so as to determine the inner diameter of each section of pipeline in the drain pipe and the blocking condition of the interior of the pipeline;
s2, splicing the plurality of pipe sections into a cleaning pipe, and adjusting the length of the telescopic pipe according to the inner diameter of each section of pipeline in the drainage pipe to enable the distance between the cleaning hemisphere and the inner wall of the drainage pipe to be 15-20 cm; then slowly placing the spliced liquid injection pipe to a specified position along the inner wall of the drainage pipe to be cleaned;
s3, injecting a pressurized liquid through a cleaning pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic pipe and is sprayed out through the nozzle of the V-shaped groove, and the pressurized liquid is sprayed into the drainage pipe and is partially attached to the inner wall;
s4, the telescopic pipe and the cleaning hemisphere are driven to synchronously rotate by rotating the liquid injection pipe, and the convolution is added, so that the drainage pipeline can be cleaned in all directions;
and S5, after the cleaning is finished, the cleaning device is retracted.
A design method for cleaning hemispheres comprises the following steps:
the surface tension of the jet flow is increased along with the increase of the grooving half angle alpha of the V-shaped groove and the increase of the thickness of the jet flow, so that the jet flow is difficult to diffuse, the diffusion angle theta is reduced finally, and the cleaning range is reduced; when the grooving half angle of the V-shaped groove is increased, the sectional area of an outlet is increased, so that the flow is increased;
and (3) obtaining an optimal grooving angle according to the relation between the grooving half angle and the diffusion angle as well as the flow:
diffusion angle vs. notching half angle relationship:
θ＝a 1 +b 1 ×α (1)
in the formula: theta-diffusion angle; α -notched half angle; a is 1 、b 1 -a proportionality coefficient, wherein b 1 ＜0，60°≥α≥25°；
Flow rate versus slot half angle relationship:
q＝a 2 +b 2 ×α (2)
in the formula: q is the flow rate; alpha-grooving half-angle; a is 2 、b 2 -a proportionality factor wherein b 2 ＞0，60°≥α≥25°；
The half angle of slotting can be obtained from q = theta
If the grooving half angle alpha is not within the range of more than or equal to 25 degrees of more than or equal to 60 degrees, taking alpha =60 degrees;
step 2, obtaining a proper grooving depth t according to the relation between the grooving depth t and the diffusion angle theta and the flow q:
the depth t of the groove of the V-shaped groove is increased, the injection angle is gradually increased, and the flow is gradually reduced;
and (3) obtaining the appropriate slotting depth according to the relation among the slotting depth, the diffusion angle and the flow:
diffusion angle versus grooving depth relationship:
θ＝a 3 +b 3 ×t (3)
in the formula: theta-diffusion angle; t-grooving depth; a is 3 、b 3 -a proportionality factor wherein b 3 ＞0，0≤t≤0.3mm
Flow rate vs. depth of slot relationship:
q＝a 4 +b 4 ×t (4)
in the formula: q is the flow rate; t-grooving depth; a is a 4 、b 4 -a proportionality coefficient, wherein b 4 ＜0，0≤t≤0.3mm
From q = θ we can get: there are two cases: firstly, if t is not less than 0 and not more than 0.3mm and no intersection point exists, t = 0.1-0.2 mm is taken; secondly, t is more than or equal to 0 and less than or equal to 0.3mm, and the product can be obtained
Step 3, determining the jet pressure: energy loss was not considered from the V-nozzle outlet to the tube wall inner wall:
in the formula: f, jet flow hitting power; d is a radical of 1 -an equivalent diameter; p-jet pressure
Wherein the equivalent diameter d 1 Equal to the diameter of the arc-shaped nozzle
When the jet hitting power is equal to the threshold pressure, the jet hitting power threshold value can be obtained from equation (5):
jet pressure vs jet velocity relationship:
in the formula: v-jet velocity; k-proportionality coefficient
Substituting the jet impact force critical value into a formula (6) to obtain an emergent flow speed critical value:
flow rate through the nozzle per unit time
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
1. the invention is suitable for circular pipelines with various diameters of a tunnel drainage system, can realize long-distance pipeline washing and cleaning, improves tunnel maintenance efficiency and reduces maintenance cost. Meanwhile, the device for cleaning the hemispherical structure is designed to achieve the optimal cleaning effect, save a large amount of flushing liquid, meet green construction and respond to the advocation of resource saving;
2. the washing process is simple, and the drain pipe can be thoroughly washed;
3. the inside inverted filter layer that is provided with of washing hemisphere can prevent that debris etc. in the drain pipe from entering into belt cleaning device, improves the availability factor.
4. The cleaning hemisphere V-shaped nozzle structure achieves the best cleaning efficiency and saves resources under the lowest energy consumption by reasonably designing the grooving depth, the grooving half angle and the flow.
Drawings
FIG. 1 is a schematic view of the cleaning tube in this embodiment;
FIG. 2 is a schematic cross-sectional view of the cleaning tube in this embodiment;
FIG. 3 is a schematic structural diagram of a cleaning hemisphere in the present embodiment;
FIG. 4 is a graph showing the relationship between the diffusion angle θ and the grooving half-angle α and the flow q;
FIG. 5 is a graph of the relationship between the depth t of the slot, the flow q and the diffusion angle theta;
FIG. 6 is a schematic view of a layout of a road surface survey line in a tunnel;
FIG. 7 is a vertical traveling direction scan image (a central drain reflection image in a black box);
FIG. 8 is a road centerline scan image (central drainage pipe reflection image in black frame and central manhole reflection image in white frame);
fig. 9 is an inspection work flow chart.
In the figure, 1, a water drainage pipe; 2. a liquid injection pipe; 21. a telescopic pipe; 22. cleaning the hemisphere; 23. and (4) an inverted filter layer.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings as follows:
the invention discloses a tunnel drain pipe cleaning device which comprises a cleaning pipe, wherein the cleaning pipe comprises a liquid injection pipe, an extension pipe is communicated with the periphery of the liquid injection pipe, and one end, far away from the liquid injection pipe, of the extension pipe is in threaded connection with a cleaning hemisphere.
The liquid injection pipe is a flexible pipe, can be bent and is corrosion-resistant, the pipe diameter of the liquid injection pipe is smaller than that of a tunnel drainage pipe, the section size of the liquid injection pipe meets corresponding requirements, pressurized liquid is injected into the liquid injection pipe through pressure equipment, the liquid injection pipe is formed by splicing pipe sections with different lengths (0.5m, 1.0m,2.0m and 3.0m), except the pipe section with the length of 0.5m, and a plurality of telescopic pipes and cleaning hemispheres are arranged on each of the other pipe sections at equal intervals of 0.5 m.
The structure of the telescopic tube refers to a metal antenna of an old television, and the detailed description is omitted here. The liquid injection pipe has the functions of conveying pressurized liquid in the liquid injection pipe to the cleaning hemisphere and can freely stretch and retract to adapt to drain pipes with different pipe diameters. According to the actual situation, the number of telescopic pipes can be 3 or 4 or other numbers according to the same cross section. The telescopic mode is manual adjustment. Because the cleaning hemispheres are arranged at equal intervals, not all cleaning hemispheres are required to be used, and the unused positions are blocked by sleeves according to actual conditions.
Wash the hemisphere, including hemisphere section and cylinder section, the hemisphere section has the nozzle, makes things convenient for liquid to spray and go out from wasing the hemisphere, washs the hemisphere simultaneously and has seted up V type groove, and inside has the reversed filter layer, prevents that debris etc. in the drain pipe from getting into the jam. The cleaning hemisphere is detachable (with flexible pipe threaded connection), according to required nozzle fluting type, selects different cleaning hemispheres, and cleaning hemisphere and first festival adopt threaded connection (cleaning hemisphere is the external screw thread, and the flexible pipe that meets rather than is the internal thread, guarantees sealed effect). The hemisphere section is also provided with a nozzle cover, and the cleaning hemisphere which is not needed to be used can be sealed by the nozzle cover, so that water is saved.
The invention also provides a design method for cleaning hemispheres, which comprises the following steps as shown in figures 3, 4 and 5:
The surface tension of the jet flow is increased along with the increase of the grooving half angle alpha of the V-shaped groove and the increase of the thickness of the jet flow, so that the jet flow is difficult to diffuse, the diffusion angle theta is reduced finally, and the cleaning range is reduced; and when the grooving half angle of the V-shaped groove is increased, the sectional area of an outlet is increased, so that the flow is increased.
The optimum slotting angle is obtained by utilizing the relation between the slotting half angle and the diffusion angle and the flow:
diffusion angle vs. notching half angle relationship:
θ＝a 1 +b 1 ×α (1)
in the formula: theta-diffusion angle; alpha-grooving half-angle; a is 1 、b 1 -a proportionality coefficient, wherein b 1 ＜0，60°≥α≥25°；
Flow rate versus slot half angle relationship:
q＝a 2 +b 2 ×α (2)
in the formula: q is the flow rate; α -notched half angle; a is 2 、b 2 -a proportionality coefficient, wherein b 2 ＞0，60°≥α≥25°；
Formula (1) = formula (2) available grooving half angle
If the calculated grooving half angle α is not within the above range, α =60 °.
Example (c): through experiments, the relation data of the slotting half angle, the diffusion angle and the flow of the V-shaped groove in the following list can be calculated as follows:
the graph of the diffusion angle theta, the grooving half-angle alpha and the flow q is shown in FIG. 4.
By linear fitting we can get:
diffusion angle θ and notching half angle α: θ = -0.78457 α +66.07179;
flow relationship q versus slot half angle α: q =0.00336 α +0.02107;
from θ = q, it can be seen that the half angle α =83.83 ° of the slot is out of the range of 25 to 60 °, α =60 °.
Step 2, obtaining a proper grooving depth according to the relation between the grooving depth and the diffusion angle and the flow:
the increase of V type groove fluting degree, the angle of spouting increases gradually, and the flow reduces gradually. And obtaining the appropriate slotting depth according to the relation among the slotting depth, the diffusion angle and the flow.
Diffusion angle versus grooving depth relationship:
θ＝a 3 +b 3 ×t (3)
in the formula: theta-diffusion angle; t-grooving depth; a is 3 、b 3 -a proportionality coefficient, wherein b 3 ＞0，0≤t≤0.3mm；
Flow rate vs. depth of slot relationship:
q＝a 4 +b 4 ×t (4)
in the formula: q is the flow rate; t-grooving depth; a is 4 、b 4 -a proportionality coefficient, wherein b 4 ＜0，0≤t≤0.3mm；
Formula (3) = formula (4) may be obtained: there are two cases: firstly, if t is not less than 0 and not more than 0.3mm and no intersection point exists, t = 0.1-0.2 mm is taken; secondly, t is more than or equal to 0 and less than or equal to 0.3mm,can obtain the product
Example (c): the relation data of the slotting depth of the V-shaped groove, the diffusion angle and the flow in the following list can be calculated through experiments:
the relationship graph of the depth t of the slot, the flow q and the diffusion angle theta is shown in figure 5.
By linear fitting:
diffusion angle θ and grooving depth t: theta =10.53t +19.588
Flow relationship q vs. slot depth t: q = -0.175t +0.2195
From theta = q, the grooving depth t = -1.8 can be obtained, and if the grooving depth t = -1.8 does not meet the requirement, t = 0.1-0.2 mm is taken
According to the calculation, in the first step, the V-shaped groove slotting half angle can be obtained through the relation between the V-shaped groove slotting half angle and the diffusion angle and the flow rate through linear fitting and the equal principle. And secondly, on the basis of the V-shaped groove grooving half angle determined in the first step, keeping the grooving half angle unchanged to obtain the relation between the grooving depth of the V-shaped groove and the diffusion angle and flow, and obtaining the grooving depth of the V-shaped groove through linear fitting and an equality principle. The optimum V-shaped groove grooving half angle and grooving depth can be obtained through the two steps.
In summary, given the slot angle and depth, it is possible to identify the slot size and shape, and the cylindrical section size is determined by L/d = 2.5-3.5 (the ratio range is better for the jet pressure performance).
And 3, when the jet pressure is selected, cleaning can be finished when the working pressure is greater than the threshold pressure of dirt. The cleaning effect can be ensured by appropriately increasing the pressure, but the excessive pressure causes power consumption and waste of water resources, and increases the cost. Too high a pressure may also cause the water jet to atomize and thus reduce the striking force, and the disturbance of the reverse flow caused by the water jet splashing around after striking the wall is also a cause of the reduction of the striking force, so it is necessary to determine the minimum jet striking force, i.e. F Jet flow ＝F Threshold (THD) At the moment, the jet pressure and the jet speed reach critical values, and when the actual jet pressure or the actual jet speed is equal to the critical values, dirt, sundries, sludge and the like are cleaned most economically and reasonably.
Energy loss is not considered from the outlet of the V-shaped nozzle to the inner wall of the pipe wall:
in the formula: f, jet flow hitting power; d 1 -an equivalent diameter; p-jet pressure, where the equivalent diameter d 1 Equal to the diameter of the arc-shaped nozzle;
when the jet hitting power is equal to the threshold pressure, the jet hitting power threshold value can be obtained from equation (5):
jet pressure vs jet velocity relationship:
in the formula: v-jet velocity; k is the proportionality coefficient;
substituting the jet impact force critical value into a formula (6) to obtain an emergent flow speed critical value:
flow rate through the nozzle per unit time
The jet flow impact force critical value and the jet flow speed critical value obtained through the calculation are used for controlling the flow and the pressure of the flushing solution, so that the aim of saving resources is fulfilled.
The invention also provides a tunnel drain pipe cleaning method, as shown in fig. 6, 7 and 8, the steps are as follows:
s1, determining the position of a drain pipe and performing drilling inspection, thereby determining the inner diameter of each section of pipeline in the drain pipe and the blocking condition inside the pipeline.
S11, drain pipe position confirmation: determining the initial pile number of the tunnel portal section according to tunnel design data or maintenance pile numbers in the tunnel, measuring from the tunnel portal by adopting tools such as a tape and the like, and marking the pile number on the inner side wall of the tunnel. And recording and taking pictures by using geological radar, an endoscope, a camera and the like.
Taking the central drain pipe as an example, the geological radar antenna is pulled to form a measuring line along the vertical driving direction of a half lane in the hole, and the position and the approximate burial depth of the central drain pipe are judged through the scanning image waveform characteristics of the geological radar.
After the position of the central drainage pipe is determined, a parallel measuring line is longitudinally pulled above the central drainage pipe along the road, and the trend of the central drainage pipe and the position of the central inspection well are determined according to the characteristics of the radar image waveform.
S12, drilling inspection: and drilling holes perpendicular to the road surface according to the drilling point positions by adopting a 50mm water drill punching machine. The hole sites of the inspection holes are generally arranged at 1 position at an interval of 100m, and the drilling points are marked by spray paint; the key inspection section with local abnormal conditions such as blockage can be properly encrypted; in principle, inspection holes should be arranged at the locations of the central drain inspection shaft, the sand basin, etc. The hole collapse condition may occur when drilling into the void layer and the gravel layer, the stability of the hole wall is difficult to maintain, at the moment, the gravel layer can be locally stabilized by adopting modes of pouring a quick plugging agent and the like, and then drilling is continued.
The condition in the inspection hole and the central drainage pipe is inspected by an industrial endoscope or a pipeline endoscope, an inspection video enters the bottom of the hole from the moment when a lens enters the inspection hole, the condition in the central drainage pipe at the hole position is determined by utilizing the steering function of the lens, the shooting is not interrupted in the middle, and a picture of a serious part of the pipeline blockage can be recorded. And finally repairing the inspection hole by using repair mortar. The inspection workflow is shown in fig. 9.
S13, according to the inspection conditions, firstly determining the clogging conditions at different length positions of the drain pipe, predicting the actual size of the inner diameter of the drain pipe at the clogging position, splicing pipe joints, and adjusting the lengths of the extension pipes at different positions according to the actual inner diameter of the drain pipe so as to meet the cleaning purpose (the distance between the cleaning hemisphere and the inner wall reaches the optimal distance of 15-20 cm). And slowly placing the cleaning pipe after splicing adjustment to a specified position along the inner wall of the drainage pipe to be cleaned.
S3, injecting a pressurized liquid through an injection pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic pipe and is sprayed out through the nozzle of the V-shaped groove, and the pressurized liquid is sprayed into the drainage pipe and is partially attached to the inner wall;
s4, the telescopic pipe and the cleaning hemisphere are driven to synchronously rotate by rotating the liquid injection pipe, the drainage pipeline can be cleaned in all directions, convolution is added, and the cleaning effect is better;
and S5, after the cleaning is finished, the cleaning device is retracted.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the protection scope of the present invention. While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a tunnel drain pipe belt cleaning device which characterized in that: including the scavenge pipe, the scavenge pipe is including annotating the liquid pipe, it is provided with flexible pipe to annotate liquid pipe week side intercommunication, the one end threaded connection that annotates the liquid pipe was kept away from to flexible pipe has the washing hemisphere.
2. The tunnel drain cleaning device of claim 1, wherein: the cleaning hemisphere comprises a shell-shaped cylindrical section and a hemisphere section, a V-shaped groove is formed in the end portion of the hemisphere section, an inverted filter layer is arranged in the V-shaped groove, and a nozzle cover is further arranged on the hemisphere section.
3. The tunnel drain cleaning device of claim 2, wherein: the liquid injection pipe is formed by splicing a plurality of pipe sections.
4. A method for cleaning a tunnel drain pipe is characterized by comprising the following steps: the method comprises the following steps:
s1, determining the position of a drain pipe and performing drilling inspection, so as to determine the inner diameter of each section of pipeline in the drain pipe and the blocking condition of the interior of the pipeline;
s2, splicing the plurality of pipe sections into a cleaning pipe, and adjusting the length of the telescopic pipe according to the inner diameter of each section of pipeline in the drainage pipe to enable the distance between the cleaning hemisphere and the inner wall of the drainage pipe to be 15-20 cm; then slowly placing the spliced liquid injection pipe to a specified position along the inner wall of the drainage pipe to be cleaned;
s3, injecting a pressurized liquid through a cleaning pipe; pressurized liquid flows into the cleaning hemisphere through the telescopic pipe and is sprayed out through the nozzle of the V-shaped groove, and the pressurized liquid is sprayed into the drainage pipe and is partially attached to the inner wall;
s4, the telescopic pipe and the cleaning hemisphere are driven to synchronously rotate by rotating the liquid injection pipe, and the convolution is added, so that the drainage pipeline can be cleaned in all directions;
and S5, after the cleaning is finished, the cleaning device is retracted.
5. A design method for cleaning hemispheres is characterized by comprising the following steps: the method comprises the following steps:
step 1, defining a half angle of a V-shaped groove as a grooving half angle alpha, a grooving depth as t, an included angle between outline tangents of two sides of jet water ejected by a cleaning hemisphere as a diffusion angle theta, a radius of the hemisphere section as r, a diameter of a cylinder section as d, a length of the cylinder section as L and a flow of pressurized liquid as q;
the surface tension of the jet flow is increased along with the increase of the grooving half-angle alpha of the V-shaped groove and the increase of the thickness of the jet flow, so that the jet flow is difficult to diffuse, the diffusion angle theta is reduced finally, and the cleaning range is reduced; when the grooving half angle of the V-shaped groove is increased, the sectional area of an outlet is increased, so that the flow is increased;
and (3) obtaining an optimal grooving angle according to the relation between the grooving half angle and the diffusion angle as well as the flow:
diffusion angle vs. notching half angle relationship:
θ＝a 1 +b 1 ×α (1)
in the formula: θ — diffusion angle; α -notched half angle; a is 1 、b 1 -a proportionality coefficient, wherein b 1 ＜0，60°≥α≥25°；
Flow versus half angle of grooving:
q＝a 2 +b 2 ×α (2)
in the formula: q is the flow rate; α -notched half angle; a is 2 、b 2 -a proportionality factor wherein b 2 ＞0，60°≥α≥25°；
The half angle of slotting can be obtained from q = theta
If the grooving half angle alpha is not within the range of more than or equal to 25 degrees of more than or equal to 60 degrees, taking alpha =60 degrees;
step 2, obtaining a proper grooving depth t according to the relation between the grooving depth t and the diffusion angle theta and the flow q:
the depth t of the groove of the V-shaped groove is increased, the injection angle is gradually increased, and the flow is gradually reduced;
and (3) obtaining the appropriate slotting depth according to the relation among the slotting depth, the diffusion angle and the flow:
diffusion angle versus grooving depth relationship:
θ＝a 3 +b 3 ×t (3)
in the formula: theta-diffusion angle; t-grooving depth; a is 3 、b 3 -a proportionality coefficient, wherein b 3 ＞0，0≤t≤0.3mm
Flow rate vs. depth of slot relationship:
q＝a 4 +b 4 ×t (4)
in the formula: q is the flow rate; t-grooving depth; a is a 4 、b 4 -a proportionality coefficient, wherein b 4 T is less than 0,0 and less than or equal to 0.3mm and is obtained from q = theta: there are two cases: firstly, if t is not less than 0 and not more than 0.3mm and no intersection point exists, t = 0.1-0.2 mm is taken; secondly, t is more than or equal to 0 and less than or equal to 0.3mm, and the product can be obtained
Step 3, determining the jet pressure: energy loss was not considered from the V-nozzle outlet to the tube wall inner wall:
in the formula: f, jet flow hitting power; d 1 -an equivalent diameter; p-jet pressure
Wherein the equivalent diameter d 1 Equal to the diameter of the arc-shaped nozzle
When the jet hitting power is equal to the threshold pressure, the jet hitting power threshold value can be obtained from equation (5):
jet pressure vs jet velocity relationship:
in the formula: v-jet velocity; k-proportionality coefficient
Substituting the jet impact force critical value into a formula (6) to obtain an emergent flow speed critical value:
flow rate through the nozzle per unit time
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| DE2927737B1 (en) * | 1979-07-10 | 1981-01-08 | Lechler Gmbh & Co Kg | Flat jet nozzle for spraying liquids |
| JP2000234720A (en) * | 1999-02-16 | 2000-08-29 | Babcock Hitachi Kk | Soot blower |
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