CN203658601U - A tunnel model test device achieving multiple geophysical field advanced detection - Google Patents
A tunnel model test device achieving multiple geophysical field advanced detection Download PDFInfo
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- CN203658601U CN203658601U CN201420009396.1U CN201420009396U CN203658601U CN 203658601 U CN203658601 U CN 203658601U CN 201420009396 U CN201420009396 U CN 201420009396U CN 203658601 U CN203658601 U CN 203658601U
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Abstract
The utility model discloses a tunnel model test device achieving multiple geophysical field advanced detection. The tunnel model test device comprises a tunnel model cavity and a tunnel model face. The tunnel model cavity is divided into an inner layer and an outer layer. The inner layer comprises a shell and a first reinforcing element disposed in the shell and used for limiting the radial deformation of the shell. The outer layer is provided with second reinforcing elements used for limiting the radial and axial deformation of the tunnel model cavity. The tunnel model face is provided with electrode installing holes, electromagnetic method coil supports, a borehole radar detection hole and a transient electromagnetic advanced probe mounting hole. The utility model discloses the large-scale advanced geological prediction tunnel model test device which enables prediction workers to carry out multiple geophysical instrument tests in the model. The model is formed at a time through winding and overall pouring of GFRP composite material and has the advantages of high mechanical strength and excellent electromagnetic wave transmission performance, thereby being the ideal advanced prediction geophysical instrument test platform.
Description
Technical field
The utility model relates to the field of tunnel geophysics advanced prediction and model test technology, relates in particular to a kind of tunnel model test device of realizing many geophysical fields forward probe.
Background technology
In recent years, the tunnel of growing up (hole) engineering of building in the field such as traffic, water power is more and more, the geologic condition facing is day by day complicated, in tunnel excavation work progress, if can not verify in advance the geological condition in tunnel excavation front, tend to occur unforeseen Geological Hazard, as gushing water, prominent mud, cave in etc., for constructing tunnel has brought huge safety problem and economic loss, and very easily bring out Secondary Geological Hazards and ecological environment problem.So, in order to reduce the risk that meets with above-mentioned accident in constructing tunnel, the most effectively solution adopts geophysics advanced prediction technology to verify in advance front of tunnel heading adverse geological condition exactly, and pre-establishes rational Disposal Measures and construction prediction scheme according to the geological condition in front.
How verifying the adverse geological condition of tunnel tunnel face front and evade in advance the geologic hazards such as the prominent mud of gushing water, landslide, is one of technical barrier primary in constructing tunnel.At present, aspect tunnel geological forecast theory, technology and instrument research and development, obtaining impressive progress and good practical application effect both at home and abroad.But, still there is no so far highly effective advance geologic prediction geophysical probing technique and instrument, the geophysics that cannot accurately disclose unfavorable geology responds and implements accurate quantitative analysis forecast, causes constructing tunnel to be faced with high disaster accident risk.In order to improve, geophysical instrument is surveyed and the effect of decipher unfavorable geology, and the Main Means that is commonly used to actual tunnel engineering situation to study has engineering actual detection, numerical simulation and model test.Engineering actual detection is in Tunnel, to arrange that survey line carries out the method for forward probe, it is the most direct research method, but owing to can not determining in advance poorly position and the scale of plastid of front, and be easily subject to the interference (as met with fault belt, cranny development band, soft stratum, solution cavity, underground river etc.) of actual detection objective body complicated variety, be difficult to obtain desirable Effect on Detecting, costly, and limited to the raising degree of instrument and decipher level.Method for numerical simulation is a kind ofly to take out from practical study object the method that numerical model is studied, cost less and fast, but numerical simulation is often simplified model, can only obtain universal law, and the geophysics response characteristic of the poorly plastid of dissimilar, form, scale, position etc. is comparatively complicated, this just causes the result of numerical evaluation and the larger discrepancy of physical presence.Model test refers under laboratory condition, and the important scientific approach of actual condition being studied with the model of different guides it is advantageous that various phenomenons and the process that can reproduce prototype, can manual control test condition and parameter, shorten research cycle.For better understanding is dissimilar, the geophysics response characteristic situation of the unfavorable geology disaster body of different spaces distribution, just need to carry out a series of physical experiments, and a good physical experiments device often can play a multiplier effect.
In order to simulate better Practical Project situation, traditional tunnel geological forecast model test is all that tunnel model is embedded in Rock And Soil, but there is obvious weakness in tunnel model test device at present: 1. tunnel model guide is little, in hole, space exploration is narrow and small, and the general volume of existing geophysical exploration equipment is larger, cause personnel on tunnel model face, to arrange arbitrarily survey line, data acquisition difficulty by Portable device; 2. Plant arrangement form is single; the tunnel model of little guide only can be realized the layout of single geophysical exploration device; guide tunnel model as little in induced polarization method, total space transient electromagnetic tunnel model etc.; cannot apply other geophysics means and survey and contrast verification, the repeatability of test is poor; 3. choosing at tunnel model material, Strength of Metallic Materials is high but have stronger electromagnetic interference (EMI), common nonmetallic materials are difficult to bear larger Rock And Soil pressure around, and manual apply very difficultly, be therefore badly in need of a kind of comparatively desirable material that can resist electromagnetic interference (EMI) and can bear larger external pressure and make tunnel model.
Tunnel model test device platform is as grasping and the important carrier of applying advance geologic prediction geophysical instrument new technology, and it acts on by numerous scientific workers are known together.Developed country and area, usually by state-of-the-art geophysical exploration equipment with device first drop in tunnel model test platform test, test and perfect.Therefore, develop the tunnel model test device that can realize many geophysical fields forward probe, the progress of Tunnel prediction geophysical instrument and technology is had to important effect.
Utility model content
The purpose of this utility model is exactly in order to address the above problem, and has proposed a kind of tunnel model test device of realizing many geophysical fields forward probe.
To achieve these goals, the utility model adopts following technical scheme:
A tunnel model test device of realizing many geophysical fields forward probe, comprising: tunnel model cavity and tunnel model face, and tunnel model cavity becomes as a whole with tunnel model face; Described tunnel model cavity is divided into inside and outside two-layer, and internal layer comprises housing and be positioned at enclosure interior for retraining the reinforcing element one of housing radial deformation, and skin is provided with and is positioned at outside for retraining the reinforcing element two of the radial and axial distortion of tunnel model cavity; On described tunnel model face, be furnished with respectively electrode mounting hole, electromagnetic method coil brace, borehole radar exploration hole and the transient electromagnetic placement hole of popping one's head in advance, on described tunnel model face, be furnished with seismic wave method and excite measuring point and receive measuring point.
Described tunnel model face cross section is identical with shell dimension, and in the time making, the two builds into as a whole.
Described tunnel model cavity internal layer and skin water and build up an entirety.
The xsect of described tunnel model cavity internal layer shell is six sections of symmetrical structures that circular arc forms by five heart circles, the cobble shape that whole xsect is up-narrow and down-wide, periphery is round and smooth.
Described reinforcing element one is stiffening rib in annular, and in described annular, stiffening rib and housing water and build up an entirety, and both form ring rib cobble shell structure.
Described reinforcing element two comprises the outer stiffening rib of annular and axial outer stiffening rib, and the outer stiffening rib of described annular and axially outer stiffening rib water and build up an entirety, both common Special composition steel latticed structures.
Described axially outer stiffening rib is along the axial elongated distribution of housing outer surface.
Described electrode mounting hole is cylindric, and electrode mounting hole is reserved on tunnel model face according to the requirement of DC electrical method or induced polarization method arrangement of measuring-line, and electrode is arranged in electrode mounting hole according to actual needs.
The requirement that described electromagnetic method coil brace is arranged according to transient electromagnetic method coil is reserved four supports on tunnel model face, and described four are configured to rectangle.
Described borehole radar exploration hole and the transient electromagnetic placement hole of popping one's head in advance lays respectively at tunnel model face side feet, and both are cylindric, measure-alike.In the time of actual detection, the leading probe of borehole radar antenna or transient electromagnetic is placed to wherein and is all fine in any one hole.
Before advanced prediction personnel carry out test or carry out instrument test, first to do work time whole tunnel model test device is embedded in the known Rock And Soil environment of unfavorable geology hazardous condition (as built in advance a unfavorable geology Rock And Soil analogue test platform in laboratory, tunnel model test device is lifted into embedding in Rock And Soil; Or under outdoor conditions, tunnel model test device is embedded in the place that geologic condition investigates thoroughly completely and carries out test).Tunnel model test device embedding good after, just can carry out the test of many geophysical fields advanced prediction.
The beneficial effects of the utility model are:
1. the utility model proposes a kind of advance geologic prediction tunnel model test device of large guide, can carry out detection test and the test of polynary geophysical instrument in model inside for advanced prediction personnel, the one-shot forming of model selection GFRP Filament Wound Composite, one-piece casting, physical strength is high, Electromgnetically-transparent function admirable is the at present ideal test of advanced prediction geophysical instrument and test platform.
2. the utility model proposes one " ring rib cobble shell " and " Steel Space grid " double-deck tunnel model cavity, cavity body structure intensity that one-piece casting forms is high, rigidity large, good stability, be a kind of novel bearing structure form, can bear larger top load and lateral load than common tunnel model structure.
3. the utility model proposes a kind of tunnel model face structure that realizes many geophysical fields forward probe Plant arrangement, tunnel model face is provided with electrode mounting hole, electromagnetic method coil brace, borehole radar exploration hole, the transient electromagnetic placement hole etc. of popping one's head in advance, and is carved with detailed mark for recording the position of seismic wave method shot point and acceptance point.Can realize the quick layouts of multiple geophysics advanced prediction method device on tunnel model face such as induced polarization method, transient electromagnetic method, borehole radar method, seismic wave method.
Accompanying drawing explanation
Fig. 1 is the utility model tunnel model test device one-piece construction cutting plane schematic diagram;
Fig. 2 (a) is the utility model tunnel model face structure front elevation;
Fig. 2 (b) is the utility model tunnel model face axis of no-feathering mapping;
Fig. 3 is that the utility model is for induced polarization method or DC electrical method advanced prediction electrode scheme of installation;
Fig. 4 is that the utility model is for transient electromagnetic method transmitting coil scheme of installation;
Fig. 5 is that the utility model is settled schematic diagram for well geological radar method advanced prediction radar antenna;
Fig. 6 is that the utility model impulses and hammers into shape and wave detector work schematic diagram for seismic wave method.
Wherein, 1. tunnel model test device, 2. tunnel model face, 3. housing, 4. stiffening rib in annular, the 5. outer stiffening rib of annular, 6. axial outer stiffening rib, 7. electrode mounting hole, 8. electromagnetic method coil brace, 9. borehole radar exploration hole, 10. mark, 11. electrodes, 12. wires, 13. cables, 14. electromagnetic method transmitting coils, 15. borehole radar antennas, 16. hammers that impulse, 17. wave detectors, the 18. transient electromagnetics placement hole of popping one's head in advance.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1, whole tunnel model test device 1 is made up of tunnel model cavity and face 2 two parts.Wherein, tunnel model cavity is divided into inside and outside two-layer: internal layer, for " ring rib cobble shell " structure, comprises stiffening rib 4 in housing 3 and annular; Skin is " Steel Space grid " structure, comprises the outer stiffening rib 5 of annular and axial outer stiffening rib 6.As shown in Fig. 2 (a), Fig. 2 (b), tunnel model face 2 is provided with electrode mounting hole 7, electromagnetic method coil brace 8, borehole radar exploration hole 9 and the transient electromagnetic placement hole 18 of popping one's head in advance, and is carved with detailed mark 10 for recording the position of seismic wave method shot point and acceptance point.
Described " ring rib cobble shell " structure is made up of stiffening rib 4 two parts in housing 3 and annular.The xsect of described housing 3 is six sections of symmetrical structures that circular arc forms by five heart circles, the housing 3 upper and lower vertical ranges in inner space are about 2.0m, left and right horizontal distance is about 1.7m, the about 3cm of housing 3 wall thickness, the similar cobble of whole cross sectional shape, wide under upper point, periphery is round and smooth, this structural strength is high, rigidity large, good stability, can bear larger top load and lateral load than common tunnel model structure.In described annular, stiffening rib 4 is positioned at housing 3 inside, and the radial deformation of constraint housing 3, to 3 overall booster actions of housing, is circular layout in being, interval 1m between rib and rib, and every stiffening rib width is about 10cm, is highly about 5cm.In described housing 3 and annular, stiffening rib 4 one-piece casting in the time making, becomes one.
Described " Steel Space grid " structure is positioned at housing 3 outsides, is made up of the outer stiffening rib 5 of annular and axial outer stiffening rib 6 two parts.Outer stiffening rib 5 width of described annular are about 2cm, are highly about 10cm, interval 20cm between rib and rib; Described axially outer stiffening rib 6 width are about 2cm, are highly about 10cm, along the axial elongated distribution of housing outer surface, totally 8 sections; The outer stiffening rib 5 of described annular and axially outer stiffening rib 6 form " Steel Space grid " structure jointly, this structure can strengthen the ability of tunnel model carrying external pressure, the radial compression that reduces tunnel model and axially nonaffine deformation greatly, one-piece casting in the time making, becomes one.
Described electrode mounting hole 7 is reserved on tunnel model face 2 according to the requirement of DC electrical method, induced polarization method arrangement of measuring-line, on face, always have from top to bottom 5 rounds (order is followed successively by 1,2,3,4,5 from top to bottom), each row's spacing 0.4m, each arranges adjacent two hole center distance is 0.15m, wherein the 1st, 5 rows respectively have 6 holes, 2nd, 3,4 rows respectively have 10 holes, amount to 42 holes; Each electrode mounting hole 7 is cylindric, opening diameter 3cm, and the long 10cm of barrel bus, is convenient to lay power supply and potential electrode.
The requirement that described electromagnetic method coil brace 8 is arranged according to transient electromagnetic method coil is configured to by four that reserve on tunnel model face 2, four support lines form a rectangle just, and advanced prediction personnel can utilize four supports to complete quickly and easily the layout of transmitting coil.
Described borehole radar exploration hole 9 and the transient electromagnetic placement hole 18 of popping one's head in advance lays respectively at tunnel model side feet, be cylindric, opening diameter 0.2m, the long 1m of barrel bus; Due to two holes measure-alike, position is suitable, in the time of actual detection, the leading probe of borehole radar antenna or transient electromagnetic is placed to wherein and is all fine in any one hole.It is pointed out that and pop one's head in advance need to be placed to darker position time when borehole radar antenna or transient electromagnetic, need only be in each aperture external PE pipe or a pvc pipe that bore is identical, length is enough.
Described detailed mark 10 is on tunnel model face 2, to utilize the seismic wave method forward probe of ruler Accurate Calibration uses excite measuring point and receive measuring point, according to the requirement of seismic wave method arrangement of measuring-line, on tunnel model face 2, arrange a vertical survey line and a horizontal survey line, wherein on vertical survey line, there are 20 measuring points, measuring point spacing 0.1m, on horizontal survey line, there are 16 measuring points, measuring point spacing 0.1m.
Described tunnel model face 2 wall thickness are 5cm, and face cross section is identical with described shell dimension, and in the time making, the two builds into as a whole.
The described tunnel model test device of realizing many geophysical fields forward probe is completely built and is formed by GFRP Filament Wound Composite, light weight is high-strength, be wound around one-shot forming, one-piece casting, model surface is smooth, material internal density uniformity is good, after completing, there is stronger Electromgnetically-transparent performance, and can not produce any electromagnetic interference (EMI), can be advanced prediction personnel and carry out test and polynary geophysical instrument in model inside and test a desirable test platform is provided.
Before advanced prediction personnel carry out test or carry out instrument test, first to do work time whole tunnel model test device is embedded in the known Rock And Soil environment of unfavorable geology hazardous condition (as built in advance a unfavorable geology Rock And Soil analogue test platform in laboratory, tunnel model test device is lifted into embedding in Rock And Soil; Or under outdoor conditions, tunnel model test device is embedded in the place that geologic condition investigates thoroughly completely and carries out test).Tunnel model test device embedding good after, just can carry out the test of many geophysical fields advanced prediction.
As shown in Figure 3, before carrying out induced polarization method or DC electrical method advanced prediction, only transmitting electrode, potential electrode need be inserted to the electrode mounting hole 7 on tunnel model face, knock gently with iron hammer, make electrode 11 and front of tunnel heading Rock And Soil good contact, then electrode is connected on cable 13 by wire 12, just can starts the work of electrical method advanced prediction.
As shown in Figure 4, before carrying out transient electromagnetic method advanced prediction, on four electromagnetic method coil braces 8 that transmitting coil 14 is fastened on tunnel model face, receiving coil can inner mobile, the transient electromagnetic forward probe probe arbitrarily of transmitting coil 14 can be in the middle of transient electromagnetic be popped one's head in placement hole 18 in advance arbitrarily mobile come collection signal.
As shown in Figure 5, carrying out in well before geological radar method advanced prediction, borehole radar antenna 15 need only be put into borehole radar exploration hole 9, connect instrument, borehole radar antenna 15 moves and just can gather the signal that front Rock And Soil reflects arbitrarily in hole.
As shown in Figure 6, carrying out seismic wave method advanced prediction when work, utilize the hammer 16 that impulses on ready-made mark 10, to knock on tunnel model face, wave detector 17 is placed on other positions of mark 10 and carries out signals collecting.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (10)
1. a tunnel model test device of realizing many geophysical fields forward probe, is characterized in that, comprising: tunnel model cavity and tunnel model face, and tunnel model cavity becomes as a whole with tunnel model face; Described tunnel model cavity is divided into inside and outside two-layer, and internal layer comprises housing and be positioned at enclosure interior for retraining the reinforcing element one of housing radial deformation, and skin is provided with and is positioned at outside for retraining the reinforcing element two of the radial and axial distortion of tunnel model cavity; On described tunnel model face, be furnished with respectively electrode mounting hole, electromagnetic method coil brace, borehole radar exploration hole and the transient electromagnetic placement hole of popping one's head in advance, on described tunnel model face, be furnished with seismic wave method and excite measuring point and receive measuring point.
2. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, is characterized in that, described tunnel model face cross section is identical with shell dimension, and in the time making, the two builds into as a whole.
3. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, is characterized in that, described tunnel model cavity internal layer and skin water and build up an entirety.
4. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, the xsect of described tunnel model cavity internal layer shell is six sections of symmetrical structures that circular arc forms by five heart circles, the cobble shape that whole xsect is up-narrow and down-wide, periphery is round and smooth.
5. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, described reinforcing element one is stiffening rib in annular, and in described annular, stiffening rib and housing water and build up an entirety, and both form ring rib cobble shell structure.
6. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, described reinforcing element two comprises the outer stiffening rib of annular and axial outer stiffening rib, the outer stiffening rib of described annular and axially outer stiffening rib water and build up an entirety, both common Special composition steel latticed structures.
7. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 6, is characterized in that, described axially outer stiffening rib is along the axial elongated distribution of housing outer surface.
8. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, described electrode mounting hole is cylindric, electrode mounting hole is reserved on tunnel model face according to the requirement of DC electrical method or induced polarization method arrangement of measuring-line, and electrode is arranged in electrode mounting hole according to actual needs.
9. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, the requirement that described electromagnetic method coil brace is arranged according to transient electromagnetic method coil is reserved four supports on tunnel model face, and described four are configured to rectangle.
10. a kind of tunnel model test device of realizing many geophysical fields forward probe as claimed in claim 1, it is characterized in that, described borehole radar exploration hole and the transient electromagnetic placement hole of popping one's head in advance lays respectively at tunnel model face side feet, and both are cylindric, measure-alike.
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| CN201420009396.1U CN203658601U (en) | 2014-01-07 | 2014-01-07 | A tunnel model test device achieving multiple geophysical field advanced detection |
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| CN201420009396.1U CN203658601U (en) | 2014-01-07 | 2014-01-07 | A tunnel model test device achieving multiple geophysical field advanced detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728673A (en) * | 2014-01-07 | 2014-04-16 | 山东大学 | Tunnel model test device for achieving advanced detection of multiple geophysical fields |
| CN104133254A (en) * | 2014-08-11 | 2014-11-05 | 福州华虹智能科技股份有限公司 | Electric and seismic comprehensive detection instrument for underground coal mine |
| CN104977603A (en) * | 2015-06-02 | 2015-10-14 | 甘肃智通科技工程检测咨询有限公司 | Tunnel geological advance forecasting method based on mechanical energy nondestructive detection |
| CN109188530A (en) * | 2018-09-21 | 2019-01-11 | 安徽惠洲地质安全研究院股份有限公司 | More exploration geophysical field signal intelligent electromagnetic launch systems and method |
-
2014
- 2014-01-07 CN CN201420009396.1U patent/CN203658601U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728673A (en) * | 2014-01-07 | 2014-04-16 | 山东大学 | Tunnel model test device for achieving advanced detection of multiple geophysical fields |
| CN104133254A (en) * | 2014-08-11 | 2014-11-05 | 福州华虹智能科技股份有限公司 | Electric and seismic comprehensive detection instrument for underground coal mine |
| CN104977603A (en) * | 2015-06-02 | 2015-10-14 | 甘肃智通科技工程检测咨询有限公司 | Tunnel geological advance forecasting method based on mechanical energy nondestructive detection |
| CN109188530A (en) * | 2018-09-21 | 2019-01-11 | 安徽惠洲地质安全研究院股份有限公司 | More exploration geophysical field signal intelligent electromagnetic launch systems and method |
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Granted publication date: 20140618 Termination date: 20150107 |
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