CN205139131U - Simulation subway shield tunnel causes in stratum cavity test device of stratum loss - Google Patents
Simulation subway shield tunnel causes in stratum cavity test device of stratum loss Download PDFInfo
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- CN205139131U CN205139131U CN201520805639.7U CN201520805639U CN205139131U CN 205139131 U CN205139131 U CN 205139131U CN 201520805639 U CN201520805639 U CN 201520805639U CN 205139131 U CN205139131 U CN 205139131U
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Abstract
The utility model discloses a simulation subway shield tunnel causes in stratum cavity test device of stratum loss, include: visual identification system, mold box system, polychlorostyrene amine liquid bag (11), first pipe (12) and second pipe (21) that communicate polychlorostyrene amine liquid bag (11), container (17) that correspond second pipe (21), setting are in inside resistance wire (13), heating control device (20) of connecting resistance silk of polychlorostyrene amine liquid bag (11), the visual identification system includes: real -time supervision camera (1), fixed bolster (2) and collection calculation module (3), real -time supervision camera (1) is used for shooing the video image at monitoring interface, transmits video image and carries out analytical calculation for gathering calculation module (3), obtains the displacement data of interest point, still include to cover whole test device's curtain (4) and light source (5) of rigidity, the utility model discloses a device can carry out real -time supervision to every particles settling in its developing process.
Description
Technical field
The utility model belongs to underground works experimental technique field, in particular a kind of test unit of simulating cavity, Shield-bored tunnels stratum initiation Stratum Loss.The ground settlement that brings in the cavity, stratum owing to causing owing to backbreak etc. in shield-tunneling construction and Stratum Loss process subsequently can be simulated, for construction and design optimization provide foundation.
Background technology
Nowadays subway develops fast because its advantage such as economic, comfortable, convenient, fast has obtained, and shield method also obtains as the effective method the most of subway construction and develops fast thereupon, its operating technique, also substantially sound after centenary development, defines the technical know-how that a whole set of is sound.But the surrounding formation disturbance caused in work progress, thus reservoir pressure release is caused still to exist with stratum deformation problem.What these problems were brought is have the surface collapse of the features such as uncertainty, hysteresis quality and emergentness, the distortion of surrounding existing building, because subway line is generally in densely populated, economic bustling major metropolitan areas, so the loss caused is very harmful.In addition China caves in for underground cavern and shield structure causes research starting evening in bottom cavity, and at present mostly research all rests in the research of surface subsidence, therefore furthers investigate the Stratum Loss caused in cavity, stratum and seems particularly important.
Model test is under the prerequisite meeting certain principle of similitude, and model test can reflect the ground settlement that the cavity, stratum caused owing to backbreak etc. in shield-tunneling construction is brought and Stratum Loss process more convenient, comprehensive, intuitively, exactly relative to on-the-spot test and mathematical model.At present, the model test method for the empty Stratum Loss caused in modeling effort stratum mainly contains centrifugal model test method, Stratum Loss simulation, dynamically driving bring out the soil loss theory etc.These test method weak points are at present:
1, research all rests in the research of surface subsidence mostly at present, there is no the method for the particle displacement in a kind of stratum of monitoring caused by cavity, stratum that can be simply accurate and visual, therefore can not get the relation between Stratum Loss and top soil deformation, the mechanism produced for research Stratum Loss does not have effective test figure yet.
2, due to test principle, there is the problems such as centrifugal field radial direction and tangential error, Particle size, boundary effect, to such an extent as to experimental result and prototype produce deviation, can not accurately reflect the change procedure of Stratum Loss.
Although 3 have had some for the simulation of Stratum Loss, there is considerable problem of modelling, system also compares dispersion and messy, is not formed and a set ofly perfects efficient system.And the efficiency of test is not high yet.
Therefore, be badly in need of a kind ofly more perfecting effective simulation device system and coming to monitor more intuitively and accurately cavity, stratum that shield driving causes and the Stratum Loss development that brings and destructive process, the cavity development of research stratum and failure mechanism, provide scientific and reasonable foundation to the design of metro shield and construction.
Utility model content
The purpose of this utility model is just to provide a kind of test unit of simulating cavity, Shield-bored tunnels stratum initiation Stratum Loss.Device of the present utility model can carry out Real-Time Monitoring to particles settling each in its evolution.
The utility model is for realizing above object, and institute's employing scheme is:
Simulate cavity, Shield-bored tunnels stratum and cause the test unit of Stratum Loss, comprising: the container (17) of visual identifying system, model casing system, polychlorostyrene amine liquid capsule (11), the first conduit (12) being communicated with polychlorostyrene amine liquid capsule (11) and the second conduit (21), corresponding second conduit (21), be arranged on the resistance wire (13) of polychlorostyrene amine liquid capsule (11) inside, the heating control apparatus (20) of contact resistance silk;
Visual identifying system comprises: Real-Time Monitoring camera (1), fixed support (2) and collection computing module (3), Real-Time Monitoring camera (1) is for the video image at shooting and monitoring interface, carry out analytical calculation to collection computing module (3) transmission of video images, obtain the displacement data of point of interest, also comprise the light source (5) that the curtain (4) that hides whole test unit and position are fixed; Fixed support (2) will be monitored camera (1) and be fixed, and monitoring camera (1) is connected by data line with collection computing module (3).
Described test unit, described model casing system comprises: with sediment outflow door (18) model casing (6), be with foraminate shield tunnel steel model (7), tempered glass (8), test the soil body (14), surface displacement measuring equipment LVDT displacement meter (15); The one side of model casing (6) is transparent tempered glass (8), installs LVDT displacement meter (15) measured surface soil deformation at test soil body top.
Described test unit, the side of described model casing (6) is provided with the sediment outflow door (18) of water-tight.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by Real-Time Monitoring camera collection data, real-time tracking is carried out to the displacement of formation particles in process of the test, thus intuitively can simulate the evolution of the Stratum Loss caused by cavity, stratum accurately, be convenient to study it and destroy and development mechanism.By using the way of curtain and fixed light source, external environment condition is stablized, the data gathered like this can not be inaccurate because of external environment condition interference.Test-bed, by side opening one sediment outflow door, can reach fast by the effect that the sandstone in model casing is got rid of, greatly reduce workload.Simultaneously for the waterproofing design of sediment outflow door and the waterproofing design of jack horse integral, the utility model is made to may be used for being in the Stratum Loss test of water-bearing strata.Make the utility model can obtain accurate and visual Stratum Loss delta data by the combination of model casing, Stratum Loss simulation, visual identifying system system, external lights curtain.
Accompanying drawing explanation
Fig. 1 be the utility model embodiment device face structural representation.
Fig. 2 is the plan structure schematic diagram of the utility model embodiment device.
Fig. 3 is the side-looking structural representation of the utility model embodiment device.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in detail.
As Figure 1-3, simulate cavity, Shield-bored tunnels stratum and cause the test unit of Stratum Loss, comprising: the container 17 of visual identifying system, model casing system, polychlorostyrene amine liquid capsule 11, the first conduit 12 being communicated with polychlorostyrene amine liquid capsule 11 and the second conduit 21, corresponding second conduit 21, be arranged on the resistance wire 13 of polychlorostyrene amine liquid capsule 11 inside, the heating control apparatus 20 of contact resistance silk;
Visual identifying system comprises: Real-Time Monitoring camera 1, fixed support 2 and collection computing module 3, Real-Time Monitoring camera 1 is for the video image at shooting and monitoring interface, carry out analytical calculation transmission of video images to collection computing module 3, obtain the displacement data of point of interest, also comprise the light source 5 that the curtain 4 that hides whole test unit and position are fixed.Monitoring camera 1 is fixed by fixed support 2, is then connected by data line with collection computing module 3.
Gather computing module 3 and comprise video frame extraction unit, frame of video storage unit, interest point extraction unit, image coordinate data storage cell; Video frame extraction unit is used for selecting to extract frame of video picture in the video frame according to user, be stored in frame of video storage unit, interest point extraction unit reads in the frame of video picture that user selects, the mode clicked by mouse in frame of video picture is extracted the point of interest on test soil body interface, and is stored in image coordinate data storage cell by the coordinate of interest points data of extraction; One straight line fitting unit can also be set, this fitting a straight line unit is by carrying out fitting a straight line to the same point of interest in the different frame extracted, check whether the point of interest (single-point situation) existing and can not carry out fitting a straight line, if can not fitting a straight line be carried out, adopt the mode of fitting a straight line and ask for the position of intersection point as each point of interest.Again by reading in the point of interest location delta data of tracking, according to the data acquiring frequency of system, draw the displacement curve of each point of interest.
Described model casing system comprises: with sediment outflow door 18 model casing 6, be with foraminate shield tunnel steel model 7, tempered glass 8, test the soil body 14, surface displacement measuring equipment LVDT displacement meter 15; To test after the soil body 14 (can put into the moisture soil body) on request and load model casing 6 in test, the one side of model casing 6 is transparent tempered glass 8, better can be monitored the interface of the test soil body by tempered glass 8, LVDT displacement meter 15 measured surface soil deformation is installed at test soil body top.Open side sediment outflow door 18 after having tested one group the test soil body 14 is discharged, prepare to carry out lower battery of tests.
During test, the stratum Void Model made is put into model casing 6, the face of tempered glass 8 is had by model casing 6 to face monitoring camera 1, open fixed light source 5, whole system is covered curtain 4, gather computing module 3 and carry out data extraction, data have been extracted just can Query Result, to follow the tracks of finally by sampled point and location Calculation just the displacement of formation particle more exactly can carry out real-time tracking, draw the loss change on stratum
Utilize cavity, above-mentioned simulation Shield-bored tunnels stratum to cause the test method of the test unit of Stratum Loss, concrete implementation step is:
1, test prepares: first make Void Model, method is: first resistance wire 13 put into polyurethane liquid capsule 11 and be connected with outside by the first conduit 12, second conduit 21; Polyurethane liquid capsule 11 outside under shrivelled state is surrounded woven wire and vinyon, the external model that woven wire and vinyon form is set as required given shape, by the first conduit 12 to water filling in polyurethane liquid capsule 11, until the cyst wall of polyurethane liquid capsule 11 and woven wire are close to; Device is put into household freezer freezing, take out after water is all consolidated into ice in polyurethane liquid capsule 11, remove woven wire and vinyon, obtain required form stratum Void Model.Bury the Void Model made, then as requested remaining soil body is put into model casing 6 again, finally place LVDT displacement meter 15 at top.
2, visual identifying system is installed: use curtain 4 to be covered by whole device, fixed light source 5 also opens light source, mounting and fixing bracket 2 and on fixed support 2 stationary monitoring camera 1, by monitoring camera 1 with collection computing module 3 be connected, initialization gather computing module 3.
Can 3, instrument connects debugging: all debugged with visual identifying system by already installed LVDT displacement meter 15, see and draw data, check whether wrong existence.Set the frequency acquisition gathering computing module 3.
4, test: first carry out initial position record with visual identifying system, then the resistance wire 13 in heating control apparatus 20 pairs of Void Models is used to carry out electrified regulation, computer heating control is carried out by the volume of the water in measuring vessel 17, native 14 bodies of test are monitored always, until when the formation displacement velocity maximum calculated by collection computing module 3 is less than required value, show that sedimentation is basicly stable, this off-test.Ground displacement is carried out by the LVDT displacement meter 15 at top.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to the utility model claims.
Claims (3)
1. simulate the test unit that Stratum Loss is caused in cavity, Shield-bored tunnels stratum for one kind, it is characterized in that, comprising: visual identifying system, model casing system, polychlorostyrene amine liquid capsule (11), be communicated with polychlorostyrene amine liquid capsule (11) the first conduit (12) and the second conduit (21), corresponding second conduit (21) container (17), be arranged on polychlorostyrene amine liquid capsule (11) inside resistance wire (13), contact resistance silk heating control apparatus (20);
Visual identifying system comprises: Real-Time Monitoring camera (1), fixed support (2) and collection computing module (3), Real-Time Monitoring camera (1) is for the video image at shooting and monitoring interface, carry out analytical calculation to collection computing module (3) transmission of video images, obtain the displacement data of point of interest, also comprise the light source (5) that the curtain (4) that hides whole test unit and position are fixed; Fixed support (2) will be monitored camera (1) and be fixed, and monitoring camera (1) is connected by data line with collection computing module (3).
2. test unit according to claim 1, it is characterized in that, described model casing system comprises: with sediment outflow door (18) model casing (6), be with foraminate shield tunnel steel model (7), tempered glass (8), test the soil body (14), surface displacement measuring equipment LVDT displacement meter (15); The one side of model casing (6) is transparent tempered glass (8), installs LVDT displacement meter (15) measured surface soil deformation at test soil body top.
3. test unit according to claim 1, is characterized in that, the side of described model casing (6) is provided with the sediment outflow door (18) of water-tight.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520805639.7U CN205139131U (en) | 2015-10-16 | 2015-10-16 | Simulation subway shield tunnel causes in stratum cavity test device of stratum loss |
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| CN201520805639.7U CN205139131U (en) | 2015-10-16 | 2015-10-16 | Simulation subway shield tunnel causes in stratum cavity test device of stratum loss |
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| CN205139131U true CN205139131U (en) | 2016-04-06 |
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| CN201520805639.7U Expired - Fee Related CN205139131U (en) | 2015-10-16 | 2015-10-16 | Simulation subway shield tunnel causes in stratum cavity test device of stratum loss |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804857A (en) * | 2021-08-27 | 2021-12-17 | 深圳大学 | Multi-circular shield tunnel excavation model test device based on two-dimensional particles and application method |
| CN114518441A (en) * | 2022-01-27 | 2022-05-20 | 武汉理工大学 | Two-dimensional test model and method for simulating tunnel excavation stratum loss |
| CN113804857B (en) * | 2021-08-27 | 2024-05-31 | 深圳大学 | Multi-circle shield tunnel excavation model test device based on two-dimensional particles and application method |
-
2015
- 2015-10-16 CN CN201520805639.7U patent/CN205139131U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804857A (en) * | 2021-08-27 | 2021-12-17 | 深圳大学 | Multi-circular shield tunnel excavation model test device based on two-dimensional particles and application method |
| CN113804857B (en) * | 2021-08-27 | 2024-05-31 | 深圳大学 | Multi-circle shield tunnel excavation model test device based on two-dimensional particles and application method |
| CN114518441A (en) * | 2022-01-27 | 2022-05-20 | 武汉理工大学 | Two-dimensional test model and method for simulating tunnel excavation stratum loss |
| CN114518441B (en) * | 2022-01-27 | 2024-05-24 | 武汉理工大学 | Two-dimensional test model and method for simulating tunnel excavation stratum loss |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20181016 |