CN204575617U - A kind of visible model testing device of simulation tunnel gushing water - Google Patents
A kind of visible model testing device of simulation tunnel gushing water Download PDFInfo
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- CN204575617U CN204575617U CN201520229367.0U CN201520229367U CN204575617U CN 204575617 U CN204575617 U CN 204575617U CN 201520229367 U CN201520229367 U CN 201520229367U CN 204575617 U CN204575617 U CN 204575617U
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Abstract
The invention discloses a kind of visible model testing device of simulation tunnel gushing water, and this device comprises model test box, water tank, high-pressure hydraulic pump, flowmeter, the water yield and stuff loss gathering-device, Digital photographic non-contact measurement system, Osmotic Pressure Automatic Monitoring System and fiber grating displacement monitoring system etc.The characteristic of this test unit is the catastrophe evolutionary process of simulation tunnel gushing water, and can reach the object of the expansion of protrusion-dispelling rock crack and water inrush channel forming process in observation gushing water process directly perceived.This device can the different hydraulic pressure of quantitative examination, different lithology, tunnel gushing water behavior under different preventing tor body thickness, obtain the multi-scenarios method information such as stress field, displacement field and the seepage field in tunnel gushing water process, determine forming process and the form of the lower water inrush channel of Different factor impact, mechanical characteristics in announcement protrusion-dispelling rock mass structure gradually distortion process and Evolution, face prominent criterion for tunnel water bursting disaster and minimum safe thickness analysis method provides effective foundation.
Description
Technical field
The invention belongs to Tunnel Engineering geologic hazard model test field, be specifically related to a kind of visible model testing device of simulation tunnel gushing water.
Background technology
Along with the construction of traffic and water conservancy and hydropower major infrastructure project, China has become the maximum country of tunneling scale and difficulty in the world.Particularly along with key project construction center of gravity shifts to the extreme complicated western mountainous areas of topographic and geologic and karst area, or be about to build the profound Tunnel Engineering of a large amount of excessive risks, very easily meet with gushing water disaster in process of construction, have a strong impact on Tunnel Engineering building security.
Tunnel is a strip underground structure, and engineering geological condition along the line is complicated, often can run into the rich water structure such as karst or fault belt in work progress, under control water structure and high hydraulic pressure effect, and the easy induced water inrush disaster of tunnel excavation disturbance.The domestic and international research to mechanism of water inrush at present lays particular emphasis on occurrence condition and the influence factor of catastrophe, and progressively recognize tunnel tunnel face and cause calamity construct between the importance of protrusion-dispelling rock mass structure.But due to the non-linear of gushing water Catastrophe Process and strong complexity features, catastrophe Evolution is unclear, its disaster genesis mechanism is difficult to break through.Therefore, urgently study tunnel gushing water catastrophe evolution mechanism and country rock fracture behaviour under strong rich water condition, disclose protrusion-dispelling rock mass structure and destroy gushing water effect and gradual evolution process.At present about reports rarely seen with the research of protrusion-dispelling thickness relationship such as research hydraulic pressure, protrusion-dispelling rock mass physical mechanical characteristic and architectural features, particularly the model test of quantitative examination tunnel gushing water is still rare, tunnel water bursting disaster is faced to the research of prominent criterion and minimum safe thickness analysis method, lack the test unit of specialty.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of visible model testing device of simulation tunnel gushing water, by water inlet pipe and transparent model casing and supervising device, simulate infiltration while detect the formation situation of water inrush channel, and understand relevant information, solve the problem lacking experimental provision in prior art.
Technical scheme: for achieving the above object, technical scheme of the present invention is as follows:
A visible model testing device for simulation tunnel gushing water, is characterized in that, comprises transparent model casing, water tank, gathering-device and supervising device; The model casing box sealing of rectangular parallelepiped, is filled with fluid structurecoupling analog material in casing; Model casing is connected with water tank by water inlet pipe;
Model casing comprises casing and dismountable box cover, seals between this box cover and casing; Water inlet pipe stretches into from the center of casing side; Casing opposite side is positioned at above gathering-device; Box inside is evenly provided with one group of U-shaped glass barrier, and described glass barrier is furnished with some permeable holes, and perforate direction and the water inlet pipe of this permeable hole direction that intakes is identical;
Water inlet pipe is picked out by water tank, successively connection control valve and high-pressure hydraulic pump, finally stretches into model casing casing;
Gathering-device comprises the water yield and stuff loss collection container and digital-display electronic weigher, and the described water yield and stuff loss collection container are placed on digital-display electronic weigher;
Supervising device comprises the osmotic pressure sensor being arranged on model casing inner chamber, miniature soil pressure sensor, fiber grating displacement sensor and is positioned at the Digital photographic non-contact measurement system outside casing.
Further, the present invention includes a flowmeter; The water under high pressure that high-pressure hydraulic pump provides is by entering in model casing after flowmeter.Flowmeter can grasp the water yield entering water tank intuitively, reaches the object measuring inflow.
Further, model casing adopts tempered glass to be made, and is sealed, and be bolted between model casing casing and upper cover by rubber gasket.The progressive failure process of protrusion-dispelling rock mass in gushing water process can be observed more intuitively by tempered glass.Glass box cover can be dismantled, and is convenient to the filling of material, adopts rubber gasket to ensure that sealing effectiveness simultaneously, prevents experimentation from seeping water.
Further, water inlet pipe stretches into the water inlet pipe end of casing, and comprise a gondola water faucet shape water delivering orifice, this water delivering orifice end face has been evenly arranged ostium excurrens.Gondola water faucet structure ensure that water under high pressure water outlet is even, enables the uniform seepage flow of water.
Further, model casing is by a steelframe seat supports.Steelframe bearing makes whole model casing fix.Adopt the water yield and stuff loss collection container to carry out real-time collecting below it, and collection container is placed directly on digital-display electronic weigher, every 10s reads a secondary data, can weigh in real time the weight of water in process of the test and loss particle.
Further, one group of glass barrier is the five road barriers be evenly arranged, the square of described barrier xsect to be the length of side be 20mm; Barrier distributes some permeable holes, and its aperture is 2mm.Glass barrier in casing, can simulate the gushing water situation of different preventing tor body thickness under certain hydraulic pressure.In addition, glass barrier plays two aspect effects: and the water under high pressure flows by action too small whole slide that occurs of friction force between coupling material and glass casing admittedly can be prevented on the one hand, be conducive to the formation of water inrush channel; On the other hand by designing some permeable holes in barrier, the smooth and easy seepage flow of water under high pressure can be realized.
Beneficial effect:
(1) model casing main body adopts transparent tempered glass, can observe the progressive failure process of protrusion-dispelling rock mass in gushing water process more intuitively.Glass box cover can be dismantled, and is convenient to the filling of material, adopts rubber gasket to ensure that sealing effectiveness simultaneously.
(2) the glass barrier in casing, can simulate the gushing water situation of different preventing tor body thickness under certain hydraulic pressure.In addition, glass barrier plays two aspect effects: and the water under high pressure flows by action too small whole slide that occurs of friction force between coupling material and glass casing admittedly can be prevented on the one hand, be conducive to the formation of water inrush channel; On the other hand by designing some permeable holes in barrier, the smooth and easy seepage flow of water under high pressure can be realized.
(3) this model can quantitative examination hydraulic pressure, protrusion-dispelling rock mass physical mechanical characteristic and architectural feature and protrusion-dispelling thickness correlationship, by the simulation test of various working, tunnel water bursting disaster can be set up and face prominent criterion and minimum safe thickness analysis method.
(4) adopt noncontact Digital photographic measurement system in model, and adopt corresponding reprocessing analysis software, realize the whole audience monitoring of displacement field in tunnel gushing water process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the overall schematic top plan view of the present invention;
Fig. 3 is inlet pipe structure schematic diagram
Fig. 4 is glass barrier organigram;
Fig. 5 is the three-dimensional structure schematic diagram of whole device;
In figure, 1-model casing; The 2-water yield and stuff loss collection container; 3-high-pressure hydraulic pump; 4-water inlet pipe; 5-flowmeter; 6-glass barrier; 7-fluid structurecoupling analog material; 8-operation valve; 9-osmotic pressure sensor; The miniature soil pressure sensor of 10-; 11-Optical Fiber Grating Displacement Meter; 12-water delivering orifice; 13-permeable hole; 14-rubber gasket; 15-bolt; 16-water tank; 17-digital-display electronic weigher; 18-steelframe bearing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of visible model testing device of simulation tunnel gushing water, is characterized in that, comprises transparent model casing 1, water tank 16, gathering-device and supervising device; Model casing 1 box sealing of rectangular parallelepiped, is filled with fluid structurecoupling analog material 7 in casing; Model casing 1 is connected with water tank 16 by water inlet pipe 4;
Model casing 1 comprises casing and dismountable box cover, seals between this box cover and casing; Water inlet pipe stretches into from the center of casing side; Casing opposite side is positioned at above gathering-device; As shown in Figure 4, box inside is evenly provided with one group of U-shaped glass barrier 6, and described glass barrier 6 is furnished with some permeable holes 13, and perforate direction and the water inlet pipe 4 of this permeable hole 13 direction that intakes is identical;
Described water inlet pipe 4 is picked out by water tank 16, successively connection control valve 8 and high-pressure hydraulic pump 3, finally stretches into model casing 1 casing;
Described gathering-device comprises the water yield and stuff loss collection container 2 and digital-display electronic weigher 17, and the described water yield and stuff loss collection container 2 are placed in digital display electronic and claim on 17;
Described supervising device comprises the osmotic pressure sensor 9, miniature soil pressure sensor 10, fiber grating displacement sensor 11 and the Digital photographic non-contact measurement system that is positioned at outside casing that are arranged on model casing 1 inner chamber.
Further, a flowmeter 5; The water under high pressure that high-pressure hydraulic pump 3 provides is by entering in model casing 1 after flowmeter 5.The water under high pressure that high-pressure hydraulic pump provides is by entering in model casing after flowmeter.Flowmeter can grasp the water yield entering water tank intuitively, reaches the object detecting the water yield.
Further, model casing 1 adopts tempered glass to be made, and is sealed between model casing 1 casing and upper cover by rubber gasket 14, and is fixed by bolt 15.The progressive failure process of protrusion-dispelling rock mass in gushing water process can be observed more intuitively by tempered glass.Glass box cover can be dismantled, and is convenient to the filling of material, adopts rubber gasket to ensure that sealing effectiveness simultaneously, prevents experimentation from seeping water.
As shown in Figure 3, water inlet pipe 4 stretches into water inlet pipe 4 end of casing, comprises a gondola water faucet shape water delivering orifice 12, and this water delivering orifice 12 end face has been evenly arranged ostium excurrens.Gondola water faucet structure ensure that water under high pressure water outlet is even, enables the uniform seepage flow of water.
Further, model casing 1 is supported by a steelframe bearing 18.Steelframe bearing makes whole model casing fix.Adopt the water yield and stuff loss collection container to carry out real-time collecting below it, and collection container is placed directly on digital-display electronic weigher, every 10s reads a secondary data, can weigh in real time the weight of water in process of the test and loss particle.
Further, the five road barriers of one group of glass barrier 6 for being evenly arranged, the square of described barrier xsect to be the length of side be 20mm; Described permeable hole 13 aperture is 2mm.Glass barrier in casing, can simulate the gushing water situation of different preventing tor body thickness under certain hydraulic pressure.In addition, glass barrier plays two aspect effects: and the water under high pressure flows by action too small whole slide that occurs of friction force between coupling material and glass casing admittedly can be prevented on the one hand, be conducive to the formation of water inrush channel; On the other hand by designing some permeable holes in barrier, the smooth and easy seepage flow of water under high pressure can be realized.
A visualized experiment method for simulation tunnel gushing water, as shown in Figure 5, defining this box cover side is top side, and side relative to top side is bottom side, and water inlet side is left side, is right side above gathering-device, and all the other two faces are respectively front side and rear side;
The method comprises the following steps:
Step one: fixing steelframe bearing 18, model casing 1 is placed on steelframe, connect water inlet pipe 4, high-pressure hydraulic pump 3, and on front side of model casing 1 or rear side erection high-resolution digital camera, this device and front side or rear side are spaced a distance, and completely can present whole experimental provision in shooting picture;
Step 2: the fluid structurecoupling analog material 7 configured is loaded in model casing 1, fluid structurecoupling analog material 7 upper surface of filling keeps smooth, and evenly buries osmometer 9, miniature soil pressure sensor 10 and Optical Fiber Grating Displacement Meter 11 underground in the material loaded;
Step 3: placing mold molding box 1 upper cover, seals and fix, the pressure of adjustment high-pressure hydraulic pump 3, to experiment value, is opened operation valve 8 and is started water inlet;
Step 4: with digital camera real-time carry out timing Taking Pictures recording continuously, the simultaneously seepage pressure data of acquisition and recording osmotic pressure sensor 9, the stress data of miniature soil pressure sensor 10 and the displacement data of fiber grating displacement sensor 11;
The water yield and stuff loss collection container 2 carry out the filler particles thing of water that real-time collecting oozes out and loss, in digital-display electronic weigher 17 pairs of processs of the test, the weight of water and loss particle weighs in real time, and every 10s reads the qualitative data of record water yield and stuff loss collection container 2; By the temporal and spatial evolution of seepage field, stress field and displacement field in these data analysis tunnel gushing water processes.
Specifically, utilize Digital photographic measurement technology to catch the progressive failure process of protrusion-dispelling rock mass in gushing water process, utilize high-resolution digital camera timing continuous acquisition test photo, then use image processing software to carry out picture analyzing, realize protrusion-dispelling rock mass in gushing water process by the whole audience supervision and analysis of displacement field being stabilized to destruction.
Step 5: the expansion evolutionary process of protrusion-dispelling Rockmass fractures in directly monitoring gushing water process, and carry out the record of on-the-spot crack changing condition; The process of this record, can select various mode, such as by transparent recording chart docile at model casing outer wall, draw in real time according to crack situation.
Step 6: after water inrush channel is fully formed, closed control valve, weighs the general assembly (TW) flowing out water and stuff, calculates water yield and particle bleed rate.
Embodiment:
As shown in Figure 1, Figure 2, be a kind of visible model testing device of simulation tunnel gushing water shown in Fig. 3, Fig. 4, this model needs water source to be supplied by high-pressure hydraulic pump 3; Model casing 1 is adopt the rectangular parallelepiped device that is made of tempered glass, and the seam between glass adopts glass cement sealing, reach do not seep water, water-tight; Filling fluid structurecoupling analog material 7 in casing, for simulation tunnel protrusion-dispelling rock mass; Box cover can be dismantled from main body, is sealed, bolt 15 fixes between itself and casing by rubber gasket 14; Casing right openings, without any stop.
It is that the water inlet pipe 4 of 50mm is connected with high-pressure hydraulic pump 3 that casing passes on left diameter, and be provided with flowmeter 5 between water inlet pipe 4 and casing, water inlet pipe 4 is positioned at the center of glass molds molding box, and end is hydraucone shape, and is evenly arranged ostium excurrens 12, and class sprays shape.
Arrange 5 road glass barriers 6 in model casing 1 altogether, glass barrier 6 is U-shaped, and cross sectional dimensions is 20mm × 20mm, glass baffle 6 has some diameters be the permeable hole 13 of 2mm.
Place the water yield and stuff loss collection container 2 below model casing 1, collect the water and analog material 7 that flow out in process of the test.The information data of each physical field in gushing water process is obtained by osmometer 9, miniature earth pressure gauge 10 and Optical Fiber Grating Displacement Meter 11, and adopt noncontact Digital photographic measurement technology to carry out whole audience monitoring to displacement field, tunnel outburst prevention rock mass progressive failure process in gushing water process can be recorded, simultaneously can clear observation water inrush channel forming process.
Model upper cover is dismountable tempered glass, and is sealed by rubber gasket 14, on the one hand, fills fluid structurecoupling analog material 7 before convenient test; On the other hand, ensure that the sealing in process of the test, the seepage of anti-sealing.
Water inlet pipe 4 end is bell mouth shape, and termination is gondola water faucet shape, is easy to spray, and is convenient to water under high pressure even seepage flow in the fluid structurecoupling analog material 7 of simulation protrusion-dispelling rock mass.
Arrange 5 road glass barriers 6 in casing, and can prevent water under high pressure flows by action be admittedly coupled analog material 7 due to the too small whole slide that occurs of model casing 1 friction force, be conducive to the formation of water inrush channel; Barrier designs the permeable hole 13 that some diameters are 2mm simultaneously, the smooth and easy seepage flow of water under high pressure can be realized.By fluid structurecoupling analog material 7 is filled to different glass barrier 6 place, the gushing water situation of different preventing tor body thickness under certain hydraulic pressure can be simulated.
Model casing 1 adopts steelframe bearing 18 to support, and adopt the water yield and stuff loss collection container 2 below, and collection container is placed directly on digital-display electronic weigher, every 10s reads a secondary data, can weigh in real time the weight of water in process of the test and loss particle.
The model test method of simulation tunnel gushing water catastrophe evolutionary process of the present invention, concrete steps are as follows:
Step one: fix steelframe bearing, is placed on model casing on steelframe, connects high-pressure hydraulic pump, and in model casing front portion erection high-resolution digital camera.
Step 2: the fluid structurecoupling analog material configured is loaded in model casing and can fills between different barrier, to simulate different protrusion-dispelling rock mass thickness, the analog material upper surface of filling will keep smooth, and buries osmometer, miniature earth pressure gauge and Optical Fiber Grating Displacement Meter underground at specific position.
Step 3: placing mold molding box upper cover, is connected upper cover with casing with bolt, pads sealing rubber strip therebetween, to ensure leakproofness, prevents seepage.
Step 4: when the pressure of adjustment high-pressure hydraulic pump is to predetermined value, opens operation valve and starts test.
Step 5: in process of the test, carries out digital photographing in real time, the seepage pressure in acquisition test process, Stress and displacement data, and real time record water and stuff number of dropouts.
Step 6: the expansion evolutionary process of protrusion-dispelling Rockmass fractures in observation gushing water process directly perceived, and carry out on-the-spot sketch.
Step 7: after water inrush channel is fully formed, closed control valve, weighs the general assembly (TW) flowing out water and stuff, calculates water yield and particle bleed rate.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. a visible model testing device for simulation tunnel gushing water, is characterized in that, comprises transparent model casing (1), water tank (16), gathering-device and supervising device; Model casing (1) box sealing of rectangular parallelepiped, is filled with fluid structurecoupling analog material (7) in casing; Model casing (1) is connected with water tank (16) by water inlet pipe (4);
Model casing (1) comprises casing and dismountable box cover, seals between this box cover and casing; Water inlet pipe stretches into from the center of casing side; Casing opposite side is positioned at above gathering-device; Box inside is evenly provided with one group of U-shaped glass barrier (6), described glass barrier (6) is furnished with some permeable holes (13), and perforate direction and the water inlet pipe (4) of this permeable hole (13) direction that intakes is identical;
Described water inlet pipe (4) is picked out by water tank (16), and connection control valve (8) and high-pressure hydraulic pump (3), finally stretch into model casing (1) casing successively;
Described gathering-device comprises the water yield and stuff loss collection container (2) and digital-display electronic weigher (17), and the described water yield and stuff loss collection container (2) are placed in digital display electronic and claim on (17);
Described supervising device comprises the Digital photographic non-contact measurement system being arranged on the osmotic pressure sensor (9) of model casing (1) inner chamber, miniature soil pressure sensor (10), fiber grating displacement sensor (11) and being positioned at outside casing.
2. the visible model testing device of a kind of simulation tunnel gushing water as claimed in claim 1, is characterized in that, comprises a flowmeter (5); The water under high pressure that high-pressure hydraulic pump (3) provides is by entering in model casing (1) after flowmeter (5).
3. the visible model testing device of a kind of simulation tunnel gushing water as claimed in claim 2, it is characterized in that, described model casing (1) adopts tempered glass to be made, model casing (1) is sealed by rubber gasket (14) between casing and upper cover, and is fixed by bolt (15).
4. the visible model testing device of a kind of simulation tunnel gushing water as claimed in claim 2, it is characterized in that, described water inlet pipe (4) stretches into water inlet pipe (4) end of casing, comprise a gondola water faucet shape water delivering orifice (12), this water delivering orifice (12) end face has been evenly arranged ostium excurrens.
5. the visible model testing device of a kind of simulation tunnel gushing water as claimed in claim 2, is characterized in that, described model casing (1) is supported by a steelframe bearing (18).
6. the visible model testing device of a kind of simulation tunnel gushing water as claimed in claim 1, is characterized in that, the five road barriers of described one group of glass barrier (6) for being evenly arranged, the square of described barrier xsect to be the length of side be 20mm; Described permeable hole (13) aperture is 2mm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807960A (en) * | 2015-04-15 | 2015-07-29 | 中国矿业大学 | Visual model testing device and method for simulating water gushing in tunnel |
| CN105527401A (en) * | 2015-12-01 | 2016-04-27 | 中国矿业大学 | Visual simulation apparatus and method for migration of solid phase and liquid phase of mining overburden rock |
| CN107024564A (en) * | 2017-03-29 | 2017-08-08 | 山东大学 | A kind of carrying water supply installation and its application method for tunnel gushing water model test |
| CN107356510A (en) * | 2017-08-11 | 2017-11-17 | 山东科技大学 | Simulate face surrounding rock water inrush channel extension evolution pilot system |
| CN111157702A (en) * | 2020-01-03 | 2020-05-15 | 中南大学 | Heavy metal pollutant migration process and multistage resistance control model test device and method |
| CN111653183A (en) * | 2020-07-01 | 2020-09-11 | 中国科学院地质与地球物理研究所 | Visual system for simulating fluid-solid coupling tunnel excavation |
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2015
- 2015-04-15 CN CN201520229367.0U patent/CN204575617U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807960A (en) * | 2015-04-15 | 2015-07-29 | 中国矿业大学 | Visual model testing device and method for simulating water gushing in tunnel |
| CN105527401A (en) * | 2015-12-01 | 2016-04-27 | 中国矿业大学 | Visual simulation apparatus and method for migration of solid phase and liquid phase of mining overburden rock |
| CN105527401B (en) * | 2015-12-01 | 2017-10-27 | 中国矿业大学 | A kind of mining overburden solid-liquid two-phase migration visual Simulation devices and methods therefor |
| CN107024564A (en) * | 2017-03-29 | 2017-08-08 | 山东大学 | A kind of carrying water supply installation and its application method for tunnel gushing water model test |
| CN107356510A (en) * | 2017-08-11 | 2017-11-17 | 山东科技大学 | Simulate face surrounding rock water inrush channel extension evolution pilot system |
| CN107356510B (en) * | 2017-08-11 | 2022-04-22 | 山东科技大学 | Simulated stope surrounding rock water inrush channel expansion evolution test system |
| CN111157702A (en) * | 2020-01-03 | 2020-05-15 | 中南大学 | Heavy metal pollutant migration process and multistage resistance control model test device and method |
| CN111157702B (en) * | 2020-01-03 | 2021-02-26 | 中南大学 | Heavy metal pollutant migration process and multistage resistance control model test device and method |
| CN111653183A (en) * | 2020-07-01 | 2020-09-11 | 中国科学院地质与地球物理研究所 | Visual system for simulating fluid-solid coupling tunnel excavation |
| US11048002B1 (en) | 2020-07-01 | 2021-06-29 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Visualization system for simulating excavation of fluid-structure interaction tunnel |
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