CN204287168U - Tunnel gushing water is to underground water environmental impact monitoring model test unit - Google Patents
Tunnel gushing water is to underground water environmental impact monitoring model test unit Download PDFInfo
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- CN204287168U CN204287168U CN201420731735.7U CN201420731735U CN204287168U CN 204287168 U CN204287168 U CN 204287168U CN 201420731735 U CN201420731735 U CN 201420731735U CN 204287168 U CN204287168 U CN 204287168U
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Abstract
The utility model discloses a kind of tunnel gushing water to underground water environmental impact monitoring model test unit, comprise a underground water test block mold frame, a underground water channel pattern is provided with in underground water test block mold frame, the inlet end of underground water channel pattern connects with the water tank being arranged on block mold top of the trellis, endpiece connects tunnel model, lays one deck microlith at the upper surface of underground water channel pattern; A Groundwater level monitoring device settled by tunnel model frame; Be provided with in underground water test block mold frame one with the CT sniffer of underground water channel vertical; Described test block mold frame is anticorrosive wood material, brushes two-layer insullac within it simultaneously, parcel waterproof cloth, the combination of composition water-impervious; Outside tunnel face, settle a tank, be used for storing the underground water flowed out because of gushing water, and draw back water tank by water pump, recycle.
Description
Technical field
The utility model relates to a kind of groundwater environment monitoring model test unit, be specifically related to a kind of by resistivity CT method monitoring tunnel gushing water to the model equipment of underground water environmental impact, belong to modeling techniques field.
Background technology
In recent years, the Tunnel Engineering of building in the field such as traffic, water power gets more and more, and the geologic condition faced is also complicated all the more, in tunnel excavation work progress, easily occurs unforeseen Geological Hazard, as gushing water, prominent mud, caves in.China is one of the most serious country of the underground works water bursting disasters such as tunnel, and gushing water mud disaster of dashing forward not only can cause casualties and economic loss in the underground workss such as all kinds of tunnels, also can bring serious environmental disruption.After groundwater flow loses, water level decreasing, above tunnel tunnel face, subsiding or little hole of collapsing often appears in earth's surface, simultaneously with the loss of surface water, occurs that river stops, well dries up etc.How in the underground engineering construction processes such as tunnel, reduce environmental disruption and economic loss that gushing water brings, be in constructing tunnel must faced by a difficult problem.At present, both at home and abroad in the problem of reply gushing water situation, generally research emphasis is placed on how fast water blockoff, ensures the safety of workmen in tunnel and reduce equipment property loss aspect.And to the groundwater environment deterioration aspect that gushing water causes, there is no enough research, more do not have effective monitoring method, this remains the underground engineering field such as domestic and international tunnel significant problem urgently to be resolved hurrily.Fact proved, we need in whole work progress, monitor groundwater environment.The beyond doubt the most objective and direct research method of engineering actual monitoring, but due in advance and do not know position and the scale of water-bearing structure, and be easily subject to the interference of actual detection objective body multi-solution, be difficult to obtain desirable test effect.Method for numerical simulation a kind ofly takes out from practical study object the method that numerical model carries out studying, but itself and be not suitable for monitoring test research.Model test refers in laboratory conditions, the important scientific approach studied actual condition with the model of different scale, it is advantageous that the various phenomenon and process that can reproduce prototype, and can test parameter by manual control, test condition setting flexibly.In order to the impact of underground works gushing water on groundwater environment better can be understood, need to carry out a series of physical experiments, and a good physical model experiment device often can play a multiplier effect.Physical model experiment device has been the key of tunnel gushing water to underground water environmental impact monitoring test, it is test the core content carried out that its design is built, under the prerequisite that forefathers did not carry out similar test, develop the physical model that can realize groundwater environment monitoring, to the progress of the underground workss such as tunnel, there is important value.
Utility model content
For the problems referred to above, propose the model test of tunnel gushing water to underground water environmental impact, utilize resistivity to carry out monitoring imaging across hole CT detection method to the change of groundwater level in tunnel gushing water process and shutoff process, adopt resistivity across hole CT passage of time inversion method process data.For the technical indicator of monitoring test, the tunnel excavation environment that simulation is actual, the model test apparatus that before the utility model proposes a kind of simulation tunnel excavation generation water bursting disaster, middle and later periods groundwater environment changes.
For achieving the above object, the utility model adopts following technical scheme:
Tunnel gushing water is to underground water environmental impact monitoring model test unit, comprise a underground water test block mold frame, a underground water passage is provided with in described underground water test block mold frame, the inlet end of described underground water passage is mounted on the test water tank of block mold top of the trellis, endpiece connects tunnel model, and the upper plane of described underground water passage is equipped with one deck microlith; The sidewall of described underground water test block mold frame is provided with a groundwater level monitoring device be connected with underground water passage; The CT sniffer that one passes perpendicularly through underground water passage is provided with in described underground water test block mold frame; Described test block mold frame is anticorrosive wood material, brushes two-layer insullac within it simultaneously, parcel waterproof cloth, the combination of composition water-impervious; Outside tunnel face, settle a tank, be used for storing the underground water flowed out because of gushing water, and draw back water tank by water pump, recycle.
Described underground water passage comprises a long 3.6m, diameter 40cm, the round cloth cylinder of the single-open be made by three layers of geotextile, bulk rubble is loaded in the cylinder of described round cloth cylinder, whole channel support is got up, and then the pipeline of underground water circulation is formed in circle cloth cylinder inside, and geotextile is used for exclusion of water and soil layer, avoids most of soil particle to enter conduit pipe and blocks.
Described tunneling model, mainly comprises one section of pvc pipe, carries out shutoff at its side mortar filling, and is connected with conduit pipe the side of shutoff, fixes geotextile by fluting on pvc pipe.
Described water-impervious combination, mainly comprise the anticorrosive wood shelf integrally descending Model of Water Environment, within it wall is coated with two-layer insullac, again waterproof cloth is affixed on wall, bottom is one deck mortar, and this cover combination effectively can stop the loss of water in model substantially, warranty test effect.
Described CT sniffer, i.e. CT sniffer, for the position of Underground aquaporin, and the height of groundwater level; Comprise a PVC sleeve pipe, axially beat many (exploring electrode number) individual aperture along sleeve pipe, be used for copper electrode is installed, one end band of copper electrode is fluted, the equal bondage copper conductor of groove on every root copper rod, draw and carry out numbering, the other end is connected on exploration cable.
Described groundwater environment monitoring device, comprise the PVC collector pipe be embedded in soil layer, the buret of display underground water height of water level and the valve being connected collector pipe and buret, PVC collector pipe is more elongated, little pore is made at its tube wall, with the bottom being embedded in groundwater environment model after the good dustcloth parcel of water permeability, utilize its law of connected vessels just can reflect the water level of underground water.
Before test is carried out, first will entirely descend monitoring water environment model buildings good, arrange according to test needs in concrete conduit pipe and the number in tunnel and position.Test is first found out the position of conduit pipe, is then transported in conduit pipe by underground water before carrying out by ground location.When the water level of underground water arrives certain altitude, dig at the differing heights of tunnel tunnel face immediately, simulate the underground water caused because of gushing water and run off.Finally carry out the shutoff of face, groundwater level is gone up, monitor the change procedure of whole groundwater level, detailed process is as follows:
Utilize tunnel gushing water to a monitoring model test method for underground water environmental impact, it is characterized in that: comprise the following steps:
The first step, determines the hydrological geological conditions of studied region, and the relative position of underground water passage is followed in underground water passage trend and tunnel, the water-bearing structure of existence;
Second step, the size of Confirming model material, underground water passage and tunnel model and the consumption of soil and stone;
3rd step, model test preparation in earlier stage, comprises the making of underground water passage and tunnel model, prepares CT sniffer, prepares level measuring pipe and prepare data acquisition process equipment;
4th step, carries out model test.
(4-1) at the two-layer insullac of model support inwall brush, dry rear covering one deck waterproof cloth, bottom model support, cover the thick mortar of one deck 10cm simultaneously.
(4-2) every for test soil 20cm one deck is evenly paved in model support, and tamp by small-sized tamping machine; Soil to be tested to be fills up to bottom underground water passage, tunnel model or water level collector pipe behind position, places these devices, buries CT sniffer simultaneously underground; After underground water passage is laid, spread microlith that one deck 10cm is thick thereon, facilitate the fluctuation in stage of CT Underground water, be coated with one deck mortar at underground water passage both sides outer wall simultaneously, reduce passage two lateral seepage; Finally again test soil is covered to model support top.
(4-3) extension line of CT sniffer is connected with measuring instrument main frame; Water tank is placed on underground water passway, in water tank, fills clear water, be placed in the catch basin of tunnel face by the end that draws water of water pump, water delivery end then puts into water tank.
(4-4) CT sniffer is utilized to find out the accurate location of underground water passage.
(4-5) continuous water filling in underground water passage, until groundwater environment monitoring device reflection groundwater level is higher than tunnel model top, and reaches CT detection precalculated position, section top.
(4-6) in the mortar shutoff face of tunnel model, i.e. the position perforate of face three differing heights from top to bottom, by the water lev el control in underground water passage at different perforates height, then carries out CT detection, obtains the inversion imaging that CT detects section.
(4-7) perforate of three on tunnel model face is carried out shutoff from bottom to top successively, thus make water level divide three phases to go up to original position, and carry out CT detection respectively at three phases, obtain the inversion imaging that CT detects section.
The beneficial effects of the utility model:
1. the utility model is for groundwater environment monitoring test, propose a kind of groundwater environment monitoring model, it comprises underground water channel pattern, the tunneling model that PVC and mortar make, the CT sniffer that pvc pipe and copper electrode make, groundwater environment monitoring device, and the water-impervious combination be made up of waterproof cloth, insullac and anticorrosive wood.These designs can be reduced after tunnel excavation runs into water bursting disaster substantially, and the change procedure of groundwater environment, whole experimental design is simple, reliable, the convenient monitoring of experimental phenomena.
2. the utility model proposes a kind of underground water channel pattern, three layers of geotextile can effectively intercept most of soil particle, ensure the unimpeded of conduit pipe, in the geotextile of conduit pipe both sides, smear mortar simultaneously, tiny stone is laid above conduit pipe, can more real simulated groundwater decline process, large-area subsiding can not be caused because of the reduction of underground water table, and the conduit pipe of geotextile rubble composition can well the situation of gap water guide in simulation rock, and the water guide space that it supports is relatively stable, its shape of what is more important is unrestricted, inclination and the degree of crook of conduit pipe can be set as required.
3. the utility model proposes a kind of tunneling model, excavation simulation face is carried out by mortar bed shutoff, the side of mortar shutoff is connected with conduit pipe, at the differing heights of excavation face, mortar plugged zone cutter is worn during simulation gushing water, when needing groundwater level to go up, carry out shutoff with taper cork again.
4. the utility model proposes the method for attachment of a kind of PVC material and cloth, by carving a circle groove on pvc pipe, cloth is wrapped in pvc pipe outer wall, then with iron wire, cloth is tightened at groove, can cloth and pvc pipe must be linked together easily and effectively like this.
5. the utility model proposes a kind of CT sniffer, i.e. CT sniffer, comprise PVC sleeve pipe, copper electrode, and copper conductor, by simply punching, installing, wiring, just can complete, simple, practical.
6. the utility model proposes the water-impervious combination of a kind of anticorrosive wood, insullac, waterproof cloth, bottom model support, lay one deck mortar, can effectively keep the water yield in model, prevent because infiltration causes test findings inaccurate.
7. the utility model proposes a kind of groundwater environment monitoring device, by the combination of collector pipe, valve and buret, form linker, thus the water level of reflection underground water, this device is simple for production, easy for installation, and water level display is comparatively accurate.
Accompanying drawing explanation
Fig. 1 structured flowchart of the present utility model;
The side view of Fig. 2 the utility model entirety;
The vertical view of Fig. 3 the utility model entirety;
Fig. 4 tunneling illustraton of model of the present utility model;
The structural drawing of Fig. 5 the utility model CT sniffer.
In figure, 1. underground water channel pattern, 2. tunneling model, 3. underground water test block mold frame, 4.CT sniffer, 5. groundwater level measuring tube, 6. microlith sub-covering layer, 7. water tank 8. tunnel model pvc pipe, 9. mortar filling in tunnel, 10. tunnel unit with grooves in outer wall, 11.CT sniffer pvc pipe, 12.CT detects copper electrode, 13. electrode connecting lines gathered.
Embodiment
Below by instantiation and accompanying drawing, the utility model is further elaborated.
A kind of tunnel described in the utility model gushing water groundwater environment monitoring model, as Fig. 1, it comprises groundwater environment model, geophysical exploration module, i.e. CT sniffer 4 and groundwater environment monitoring modular, i.e. Level monitor 5.
Described groundwater environment monitoring model, mainly comprises underground water test block mold frame 3, in underground water test block mold frame 3, be provided with geotextile rubble underground water passage 1; The tunnel model 2 that PVC and mortar make; Groundwater level measuring tube 5; The CT sniffer 4 that PVC sleeve pipe and copper electrode make; And the water-impervious combination to be made up of waterproof cloth, insullac and anticorrosive wood; The upper plane of described underground water passage is equipped with one deck microlith sub-covering layer 6, the inlet end of underground water passage is mounted on the test water tank 7 of block mold top of the trellis, model sidewall is provided with level measuring pipe 5 and tunnel model 2, and level measuring pipe 5 is communicated with underground water passage 1; In model, country rock material is clay, with the geotextile simulate formation aquaporin 1 of parcel blinding, utilizes water tank 7 to continue to supply water.Outside tunnel face, settle a tank, be used for storing the underground water flowed out because of gushing water, and draw back water tank 7 by water pump, recycle.
As shown in Figure 4, described PVC mortar tunnel model comprises long 60cm, one section of pvc pipe 8 of diameter 20cm, shutoff is carried out at its side mortar filling 9, and one end access underground water passage after shutoff, by carving a circle groove 10 on pvc pipe, cloth is wrapped in pvc pipe outer wall, with iron wire, cloth is tightened at groove again, like this can by cloth together with pvc pipe compact siro spinning technology.
As shown in Figure 5, it is long that described CT sniffer comprises a 1.2m, the PVC sleeve pipe 11 of diameter 5cm, axially makes a call to the hole of 14 diameters about 7,8mm along sleeve pipe 11, is used for installing copper electrode 12.Copper electrode 12 is long 5cm, diameter 8mm, the reeded copper rod of one end band, the equal bondage copper conductor 13 of the groove on every root copper rod, carries out numbering and draws from one end, connecting with measuring instrument main frame.
Described groundwater level measuring tube, comprise the PVC collector pipe be embedded in soil layer, the buret of display underground water height of water level and be connected the valve that collector pipe follows buret, PVC collector pipe about has 1m long, makes the aperture of diameter about 6,7mm at its tube wall, with the bottom being embedded in groundwater environment model after the good dustcloth parcel of water permeability, utilize its law of connected vessels, just can be reflected the water level of underground water by buret, show the groundwater level absolute altitude in whole model.
Described underground water channel pattern comprises a long 3.6m, diameter 40cm, the round cloth cylinder of the single-open be made by three layers of geotextile, filling bulk rubble in cylinder, whole channel support is got up, inside becomes the pipeline of underground water circulation, and geotextile is used for exclusion of water and soil layer, avoids most of soil particle to enter conduit pipe and blocks.
Described water-impervious combination is exactly the anticorrosive wood shelf entirely descending Model of Water Environment, within it wall is coated with two-layer insullac, then waterproof cloth is affixed on wall, and bottom is the mortar that one deck 10cm is thick, this cover combination can prevent model from seeping water in a large number substantially, the effect of warranty test.
Described by the monitoring model test method of tunnel gushing water to underground water environmental impact, comprise the following steps:
The first step, determines the hydrological geological conditions of studied region, and the relative position of underground water passage is followed in underground water passage trend and tunnel, the water-bearing structure of existence or the adverse geological condition such as crack, tomography;
Second step, the quantity of Confirming model and material, the shape and size of underground water passage and tunnel model, the consumption of soil and stone;
3rd step, model test preparation in earlier stage, comprises the making of underground water passage and tunnel model, prepares CT sniffer, level measuring pipe and data acquisition process equipment;
4th step, carries out model test, comprises following step:
(4-1) at the two-layer insullac of model support inwall brush, dry rear covering one deck waterproof cloth, bottom model support, lay the thick mortar of one deck 10cm simultaneously.
(4-2) every for test soil 20cm one deck is evenly paved in model support, and tamp by small-sized tamping machine; Soil to be tested to be fills up to bottom underground water passage, tunnel model or water level collector pipe behind position, places these devices, buries CT sniffer simultaneously underground; After underground water passage is laid, spread microlith that one deck 10cm is thick thereon, facilitate the fluctuation in stage of CT Underground water, be coated with one deck mortar at underground water passage both sides outer wall simultaneously, reduce passage two lateral seepage; Finally again test soil is covered to model support top.
(4-3) extension line of CT sniffer is connected with measurement main frame; Water tank is placed on underground water passway, in water tank, fills clear water, be placed in the catch basin of tunnel face by the end that draws water of water pump, water delivery end then puts into water tank.
(4-4) CT sniffer is utilized to find out the accurate location of underground water passage, as the ambient field of test, the image that convenient inverting relatively below draws.
(4-5) continuous water filling in underground water passage, until groundwater environment monitoring device reflection groundwater level is higher than tunnel model top, and reaches CT detection precalculated position, section top.
(4-6) in the mortar shutoff face of tunnel model, namely on face, three excavations are divided in the position of three differing heights, order is for digging through, digging through in the middle part of face, dig through bottom face in face top, by the water lev el control in underground water passage at different excavation height, then carry out CT detection, obtain the inversion imaging that CT detects section.
(4-7) perforate of three on tunnel model face is divided carry out shutoff three times, order is shutoff in the middle part of shutoff bottom face, face, the shutoff of face top, thus make water level divide three phases to go up to original position, and carry out CT detection respectively at three phases, obtain the inversion imaging that CT detects section.
Claims (8)
1. tunnel gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, comprise a underground water test block mold frame, a underground water passage is provided with in described underground water test block mold frame, the inlet end of described underground water passage is mounted on the test water tank of block mold top of the trellis, and endpiece connects tunnel model; The sidewall of described underground water test block mold frame is provided with a groundwater level monitoring device be connected with underground water passage; The sniffer of an accurate location for Underground aquaporin and underground water real water level is provided with in described underground water test block mold frame; Outside tunnel face, settle a tank being used for storing the underground water flowed out because of gushing water, the water in tank is drawn back test water tank, recycles.
2. tunnel as claimed in claim 1 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, described underground water passage is the round cloth cylinder of the single-open be made by three layers of geotextile, bulk rubble is loaded in the cylinder of described round cloth cylinder, whole channel support is got up, and then the pipeline of underground water circulation is formed in circle cloth cylinder inside, described geotextile is used for exclusion of water and soil layer, avoids most of soil particle to enter conduit pipe and blocks.
3. tunnel as claimed in claim 1 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, described tunnel model comprises a pvc pipe, at its side mortar filling, and diametrically reserve multiple holes successively, use plug of thermos good seal, opposite side is carved a circle and is used for the groove of bondage geotextile.
4. tunnel as claimed in claim 3 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, the connection of described tunnel model and underground water passage is by being wrapped on pvc pipe outer wall by cloth, at the groove iron wire of pvc pipe, cloth is tightened, thus cloth and pvc pipe are firmly linked together.
5. tunnel as claimed in claim 3 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, described Groundwater level monitoring device comprises the U-shaped collector pipe be embedded in soil layer, the buret showing underground water height of water level and the valve being connected collector pipe and buret.
6. tunnel as claimed in claim 5 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that described collector pipe makes aperture at its tube wall, with the bottom being embedded in groundwater environment model after the good dustcloth parcel of water permeability.
7. tunnel as claimed in claim 1 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, described sniffer is CT sniffer, comprise a sleeve pipe, axially beat multiple hole for installing copper electrode along sleeve pipe, described copper electrode one end is the reeded copper rod of band, the equal bondage copper conductor of the groove on every root copper rod, draw and carry out numbering, the other end is connected on exploration cable.
8. tunnel as claimed in claim 1 gushing water is to underground water environmental impact monitoring model test unit, it is characterized in that, also comprise water-impervious combination, it is entirely descend the anticorrosive wood shelf of Model of Water Environment that described water-impervious combines its main body, within it wall is coated with two-layer insullac, again waterproof cloth is affixed on wall, bottom is one deck mortar.
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| CN201420731735.7U CN204287168U (en) | 2014-11-26 | 2014-11-26 | Tunnel gushing water is to underground water environmental impact monitoring model test unit |
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| CN201420731735.7U CN204287168U (en) | 2014-11-26 | 2014-11-26 | Tunnel gushing water is to underground water environmental impact monitoring model test unit |
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| CN204287168U true CN204287168U (en) | 2015-04-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459069A (en) * | 2014-11-26 | 2015-03-25 | 山东大学 | Model test device and test method for monitoring effect of tunnel water inrush on groundwater environment |
| CN109324356A (en) * | 2018-11-28 | 2019-02-12 | 山东科技大学 | A kind of mine total space three dimension direct current experimental rig and test method |
-
2014
- 2014-11-26 CN CN201420731735.7U patent/CN204287168U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459069A (en) * | 2014-11-26 | 2015-03-25 | 山东大学 | Model test device and test method for monitoring effect of tunnel water inrush on groundwater environment |
| CN104459069B (en) * | 2014-11-26 | 2015-07-22 | 山东大学 | Model test device and test method for monitoring effect of tunnel water inrush on groundwater environment |
| CN109324356A (en) * | 2018-11-28 | 2019-02-12 | 山东科技大学 | A kind of mine total space three dimension direct current experimental rig and test method |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20150422 Termination date: 20161126 |