CN210090317U

CN210090317U - Karst district tunnel drainage system crystallization blocks up analogue test device

Info

Publication number: CN210090317U
Application number: CN201822156916.2U
Authority: CN
Inventors: 叶飞; 田崇明; 赵猛; 欧阳奥辉; 秦楠; 梁兴; 王思宇
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-02-18
Anticipated expiration: 2028-12-21

Abstract

A karst district tunnel drainage system crystallization blocking analogue test device, there are first model on the support, there are first model ring side walls at both ends around the first model, there are water catch tanks on both sides, the upper surface has longitudinal sprinkler pipe and circumferential sprinkler pipe communicated with each other, there are water pipes on the water catch tanks of both sides, there are drain valves and communicate with drainage system on the water pipe, the drainage system is communicated with filter equipment, there are monitoring devices above the drainage system, the monitoring device transmits the signal to the computer, the drainage system is supported by the adjustable support that is set up on the ground, the filter equipment is communicated with feed tank through the return pipe, communicate with collecting box through the compensating pipe, there are supports of stirring apparatus, stirring apparatus on the top of the feed tank, the feed tank is communicated with circumferential sprinkler pipe, concentration balancing apparatus; the utility model is suitable for a different karst district drainage system blocks up mechanism research, and experimental data can provide the foundation for tunnel drainage system blocks up the year.

Description

Karst district tunnel drainage system crystallization blocks up analogue test device

Technical Field

The utility model belongs to the technical field of tunnel engineering, concretely relates to model test device about karst district tunnel drainage system crystallization is blockked up and karst water influences effect to different building materials.

Background

China is a large karst country, and with the rapid development of social economy, higher requirements are put forward on road transportation, and tunnels play an increasingly important role. The situation that the expressway passes through the karst area is more and more common, however, the problem of crystallization blockage of a drainage system is obvious in the process of building and operating the karst area tunnel, and the problem of blockage of the tunnel drainage system is more and more obvious along with the continuous operation of the karst area tunnel. When a tunnel drainage system is blocked and drainage is not smooth, lining water leakage is caused lightly, if the situation is found or treated late, even serious hazards such as tunnel lining cracking and bottom plate bulging can be caused, permanent damage is caused to a tunnel junction structure, and normal use and driving safety of a tunnel are affected. At present, a large amount of financial resources, material resources and resources are spent on the treatment of the crystallization blockage disease of the tunnel drainage system, but the research on the crystallization blockage mechanism of the drainage system has not been developed in a breakthrough manner, and a set of complete device for simulating the operation of the tunnel drainage system is not provided, and the crystallization blockage mechanism and the treatment method of the tunnel drainage system are effectively analyzed and researched through the device.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art not enough, provide a reasonable in design, can simulate on general tunnel drainage process, karst district tunnel drain pipe crystallization deposition process, prediction karst district tunnel drainage system and block up the test device of year.

The technical scheme for solving the technical problems is as follows: a primary model is arranged on a bracket, primary model annular lateral walls are arranged at the front end and the rear end of the primary model, a longitudinal sprinkler pipe and a circumferential sprinkler pipe which are communicated with each other are arranged on the upper surface of the primary model, a plurality of water outlet holes are processed on the longitudinal sprinkler pipe, water collecting tanks are arranged at the left side and the right side of the primary model, water leading pipes are arranged on the water collecting tanks at both sides in a communicated manner, water draining valves are arranged on the water leading pipes and communicated with a water draining system, the water draining system is communicated with a filtering device, the water draining system is supported by an adjustable bracket arranged on the ground, a monitoring device is arranged above the water draining system, the monitoring device transmits signals to a computer through a WiFi function, the filtering device is communicated with a water supply tank through a water return pipe and communicated with a collecting tank through a collecting tank valve arranged on a balance pipe, a stirring device bracket, the water supply tank is communicated with the annular sprinkling pipe through a water supply pump arranged on the main pipeline, and the water supply tank is communicated with the concentration balancing device.

The utility model discloses a just prop up the model and do: the primary formwork body is of a semi-circular arch structure simulating a tunnel and is manufactured by adopting a dry-spraying or wet-spraying process.

The utility model discloses a drainage system does: the longitudinal water drainage pipe is communicated with the transverse water drainage pipe through an elbow; the left side and the right side of the primary support model are provided with 4 longitudinal drainage pipes, the pipe diameter of the longitudinal drainage pipe on the right side is 2-3 times of that of the longitudinal drainage pipe on the left side, and the number and the pipe diameter of the transverse drainage pipes are adapted to the longitudinal drainage pipes.

The utility model discloses an upper surface equipartition of just propping up the model is provided with 7 vertical watering pipes of group, and 7 vertical watering pipes of group all are linked together with the hoop watering pipe.

The utility model discloses a 3 vertical sprinkler pipe diameters of group in first model right side are 2 ~ 3 times of 3 vertical sprinkler pipe diameters of group in left side.

The utility model discloses a drainage system highly is higher than the height of return water pipe apart from ground, and the height that highly is higher than return water pipe apart from ground of balance pipe is less than the height of drainage system apart from ground.

The utility model discloses a filter equipment does: the internal interval of filter equipment body is provided with the multilayer filter, and the filter upper berth is equipped with the filter cloth.

The utility model discloses a concentration balancing unit does: the concentration balancing device body is communicated with the water supply tank through a connecting hose, and a micro pump is arranged on the connecting hose.

The utility model discloses a monitoring devices does: the adjustable support is provided with a cross rod, the cross rod is provided with miniature cameras, and the arrangement positions and the number of the miniature cameras correspond to those of the longitudinal drain pipes and the transverse drain pipes.

The utility model discloses a karst district tunnel drainage system crystallization blocks up analogue test device and gets test method comprises following step:

s1, firstly, adding the prepared solution into a water supply tank, pumping the solution into a main pipeline through a water supply pump, enabling water flow to flow onto the primary branch model through seven longitudinal watering pipes, enabling the water flow to converge into a water collecting tank along the surface of the primary branch model, enabling the water flow to flow into a drainage system through a drainage pipe connected with the water collecting tank, and enabling the water flow to return into the water supply tank through a filtering device so as to circulate;

s2, adjusting the gradient of the drainage system through an adjustable bracket, adjusting the flow rate of water flowing through the drainage system through a drainage valve on a water conduit, and controlling the flow rate and the flow rate of water entering a main conduit through adjusting the power of a water supply pump;

s3, regularly photographing fixed positions of a transverse drain pipe, a joint and a longitudinal drain pipe through a monitoring device, calculating a crystal development rule through comparison of crystal heights in the picture, calculating a crystal amount through the crystal heights through monitoring data, then performing relation curve fitting on change data of the crystal amount to form an image, and predicting the blocking age of a drainage system according to the image;

and S4, adjusting the micro pump to add the high-concentration solution in the concentration balancing device into the water supply tank.

Compared with the prior art, the utility model has the following advantages:

1. the utility model adopts the sprinkler to simulate the actual working condition that the surrounding rock water gap gushes from all directions to the primary support, can more vividly acquire the process that the surrounding rock water enters the tunnel drainage system, and can predict the blocking rule and the blocking age of the karst area drainage system through the long-term circulation process of the sprinkler;

2. the utility model adopts eight longitudinal water discharge pipes and eight transverse water discharge pipes to form a simulated tunnel water discharge system, and four groups of transverse and longitudinal water discharge pipes are arranged on two sides of the simulated tunnel water discharge system, so that various working conditions can be simulated according to the arrangement of field water discharge pipes, materials and the like;

3. in actual engineering, the sediment of the karst water in the drainage pipe is not only the crystallization of the karst water, but also the combined action of the karst water and the crushed stone on the primary support carried along with the karst water or the reaction of the karst water with certain components of the primary support.

The utility model is simple in operation, can acquire relevant test data high-efficiently, can be applicable to different karst district drainage system through changing experimental design and block up the mechanism research, experimental gained data can provide the foundation for different karst stratum tunnel drainage system blocks up the year.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the primary support model 7 in fig. 1.

In the figure: 1. a water supply tank; 2. a stirring device support; 3. a stirring device; 4. a water supply pump; 5. a main pipeline; 6. a circumferential sprinkler pipe 7 and a longitudinal sprinkler pipe; 8. primary formwork-supporting annular walls; 9. a primary branch model; 10. a water collection tank; 11. a water conduit; 12. a drain valve; 13. a drainage system; 14. an adjustable support; 15. a monitoring device; 16. a filtration device; 17. a water return pipe; 18. a collection box; 19. a collection tank valve; 20. a concentration balancing device; 21. a computer; 22. a balance tube; 23. a support; 9-1, steel plates; 9-2, waterproof board; 9-3, geotextile; 9-4, primary supporting model body.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and examples, but the present invention is not limited to these examples.

Example 1

In fig. 1, the utility model relates to a simulation test device for crystal blockage of a tunnel drainage system in a karst region, wherein a primary support model 9 is arranged on a support 23, and the primary support model 9 is reduced in an equal proportion according to an actual tunnel so as to simulate the influence of different construction processes on the blockage of the drainage system in the karst region; the model 9 of just propping up can be dismantled, and is removable, and karst district drainage system crystallization blocks up the problem, and not only the crystallization of karst water is appeared (chemical action), and wherein, the slow deposit of fine particle, rubble etc. on the drain pipe also is the important factor (physical action) that constitutes the jam, and the deposit of these physical actions is through rivers will just prop up the fine particle on surface etc. and carry the realization, consequently, the utility model discloses can spray different ratio concrete, the influence of material to this problem is just propped up in the simulation. The utility model discloses a first model 9 comprises steel sheet 9-1, waterproof board 9-2, geotechnological cloth 9-3, first model body 9-4 be the semicircle arch structure in simulation tunnel, make by adopting dry spray or wet spray technology, can carry out the ratio of different cement, sand, stone, admixture according to engineering actual conditions and the content of studying, first model body 9-4 inside geotechnological cloth 9-3, waterproof board 9-2, steel sheet 9-1 of having set gradually. The early-supported model circumferential wall 8 is installed at both ends around the early-supported model 9, the early-supported model circumferential wall 8 prevents that rivers from flowing from both ends around the early-supported model 9, mutual intercommunication's vertical sprinkler pipe 7 and hoop sprinkler pipe 6 are installed at the upper surface interval of the early-supported model 9, vertical sprinkler pipe 7 both ends are fixed on the early-supported model circumferential wall 8, it has a plurality of apopores to process on the vertical sprinkler pipe 7, rivers spray to the upper surface of the early-supported model 9 through the apopore, 7 vertical sprinkler pipes 7 of group are installed to the upper surface equipartition of the early-supported model 9 of this embodiment, 7 vertical sprinkler pipes 7 of group all are linked together with hoop sprinkler pipe 6, 3 vertical sprinkler pipe diameters of group on the right side of the early-supported model 9 are 2 ~ 3 times of the vertical sprinkler pipe diameter of 3 groups on the left side, be used for simulating different operating.

The left side and the right side of the primary support model 9 are respectively provided with a water collecting tank 10, the water collecting tanks 10 are used for collecting karst water of surface contact reaction on the primary support model 9, the water collecting tanks 10 have energy dissipation function and counteract power potential energy obtained by water flowing through the primary support surface so that water flow can smoothly flow into a drainage system for convenient observation, water guide holes are respectively processed on the water collecting tanks 10 at the two sides, water guide pipes 11 are arranged in the water guide holes, drainage valves 12 are arranged on the water guide pipes 11 and are communicated with the drainage system 13, the drainage valves 12 regulate the water flow flowing into the drainage system 13, the drainage system 13 is communicated with a filtering device 16, the drainage system 13 is supported by an adjustable support 14 arranged on the ground, the adjustable support 14 regulates the height of the drainage system 13 and is used for simulating the blocking rules of drainage systems 13 with different gradients, and the optimal drainage gradient of a tunnel drainage system in a karst area, the drainage system of the utility model consists of a longitudinal drainage pipe and a transverse drainage pipe, wherein the longitudinal drainage pipe is communicated with the transverse drainage pipe through an elbow; in the embodiment, 4 longitudinal drain pipes are respectively arranged on the left side and the right side of the primary support model 9, the pipe diameter of the longitudinal drain pipe on the right side is 2-3 times of that of the longitudinal drain pipe on the left side, the number and the pipe diameter of the transverse drain pipes are matched with those of the longitudinal drain pipes, the left side simulates the drainage condition of a dry-season tunnel, and the right side simulates the drainage condition of a rainy-season tunnel; the drain pipe is assembled through the overlap joint and is constituteed, and convenient to detach changes, changes different materials, different pipe wall roughness, different diameters, different shapes etc. constitute the jam law of material, inner wall roughness, pipe wall size to the influence of tunnel drainage system through studying different drain pipes, confirm optimization and the improvement scheme of karst district tunnel drainage system preparation, design.

A monitoring device 15 is arranged above the drainage system 13, the monitoring device 15 consists of an adjustable support 14, a cross rod and a miniature camera, the cross rod is arranged on the adjustable support 14, the miniature camera is arranged on the cross rod, the miniature camera is a commercially available product and has the model of A9, and the arrangement position and the number of the miniature camera correspond to the positions and the number of the longitudinal drainage pipe and the transverse drainage pipe; monitoring devices 15 is through taking the wiFi function from taking signal transmission to computer 21, and miniature camera regularly shoots the drain pipe fixed position, and the picture is uploaded to the computer, calculates the deposit volume through thickness of deposit and pipe diameter size, obtains a large amount of deposit volume data, with computer fitting deposition rate curve to the prediction drainage system blocks up the year.

The utility model discloses a filter equipment 16 comprises filter equipment body, filter cloth, and the inside interval of filter equipment body is provided with the multilayer filter, and the filter upper berth is equipped with filter cloth. The filtering device 16 is communicated with the water supply tank 1 through a water return pipe 17 and is communicated with the collecting tank 18 through a collecting tank valve 19 arranged on a balance pipe 22, the height of the drainage system 13 from the ground is higher than that of the water return pipe 17 from the ground, the height of the balance pipe 22 from the ground is higher than that of the water return pipe 17 from the ground and is lower than that of the drainage system 13 from the ground, so that the water flow in the drainage system 13 can smoothly enter the water return pipe 17 through the filtering device 16, and then enters the water supply tank 1 for recycling, and the simulation test device is in the operation process, because the drainage quantity and the return quantity speed are not well controlled, in order to prevent the water in the filtering device 16 and the water supply tank 1 from overflowing too much or too little to enable the water supply pump 4 to idle, the water collecting tank 18 is additionally arranged, and the water which overflows from the water supply tank 1 and the filtering device; meanwhile, when the water levels of the water supply tank 1 and the filtering device 16 are lower than the safe height, water is supplemented, the collecting tank is used as a protection device of the whole system, so that the water in the water supply tank 1 is protected from overflowing too much, and the idle running of the water supply pump 4 is prevented; the filter plate is prevented from being submerged when the water in the filter device 16 is too much and cannot flow back to the water supply tank 1 in time when the water is too little.

Agitating unit support 2 is installed at 1 top of feed water tank, installs agitating unit 3 on the agitating unit support 2, and agitating unit 3 is used for the turbulent state of water behind the simulation tunnel lining to the stirring of karst water. The water supply tank 1 is communicated with the annular sprinkling pipe 6 through a water supply pump 4 arranged on a main pipeline 5, and the water flow entering the annular sprinkling pipe 6 can be controlled by adjusting the power of the water supply pump 4; supply tank 1 is linked together with concentration balance device 20, the utility model discloses a concentration balance device 20 is by the concentration balance device body, coupling hose, the micropump is constituteed, the concentration balance device body is linked together through coupling hose and supply tank 1, the last micropump of installing of coupling hose, whole circulation process, because the reason of crystal solid is appeared to the karst water, solute can reduce gradually in the karst water, in order to guarantee whole simulation in-process supply tank 1 karst water keeps unchangeable, need constantly add the solute in the supply tank 1, in order to reach the effect of balanced solution concentration, the solution that storage concentration is high in the concentration balance device body, speed governing micropump to constant speed, constantly supply to the solute in the supply tank 1, thereby control whole circulation system's concentration is stable.

Claims

1. The utility model provides a karst district tunnel drainage system crystallization blocks up analogue test device which characterized in that: a primary model is arranged on a bracket, primary model annular lateral walls are arranged at the front end and the rear end of the primary model, a longitudinal sprinkler pipe and a circumferential sprinkler pipe which are communicated with each other are arranged on the upper surface of the primary model, a plurality of water outlet holes are processed on the longitudinal sprinkler pipe, water collecting tanks are arranged at the left side and the right side of the primary model, water leading pipes are arranged on the water collecting tanks at both sides in a communicated manner, water draining valves are arranged on the water leading pipes and communicated with a water draining system, the water draining system is communicated with a filtering device, the water draining system is supported by an adjustable bracket arranged on the ground, a monitoring device is arranged above the water draining system, the monitoring device transmits signals to a computer through a WiFi function, the filtering device is communicated with a water supply tank through a water return pipe and communicated with a collecting tank through a collecting tank valve arranged on a balance pipe, a stirring device bracket, the water supply tank is communicated with the annular sprinkling pipe through a water supply pump arranged on the main pipeline, and the water supply tank is communicated with the concentration balancing device.

2. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, wherein the primary model is: the primary formwork body is of a semi-circular arch structure simulating a tunnel and is manufactured by adopting a dry-spraying or wet-spraying process.

3. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, wherein the drainage system is: the longitudinal water drainage pipe is communicated with the transverse water drainage pipe through an elbow; the left side and the right side of the primary support model are provided with 4 longitudinal drainage pipes, the pipe diameter of the longitudinal drainage pipe on the right side is 2-3 times of that of the longitudinal drainage pipe on the left side, and the number and the pipe diameter of the transverse drainage pipes are adapted to the longitudinal drainage pipes.

4. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, characterized in that: the upper surface equipartition of just propping up the model be provided with 7 vertical watering pipes of group, 7 vertical watering pipes of group all are linked together with the hoop watering pipe.

5. The karst region tunnel drainage system crystallization blockage simulation test device of claim 4, characterized in that: the pipe diameter of 3 groups of longitudinal sprinkling pipes on the right side of the primary support model is 2-3 times that of 3 groups of longitudinal sprinkling pipes on the left side.

6. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, characterized in that: the height of the drainage system from the ground is higher than that of the return water pipe from the ground, and the height of the balance pipe from the ground is higher than that of the return water pipe from the ground and lower than that of the drainage system from the ground.

7. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, wherein the filtering device is: the internal interval of filter equipment body is provided with the multilayer filter, and the filter upper berth is equipped with the filter cloth.

8. The karst region tunnel drainage system crystallization blockage simulation test device of claim 1, wherein the concentration balancing device is: the concentration balancing device body is communicated with the water supply tank through a connecting hose, and a micro pump is arranged on the connecting hose.

9. The karst region tunnel drainage system crystallization blockage simulation test device of claim 3, wherein the monitoring device is: the adjustable support is provided with a cross rod, the cross rod is provided with miniature cameras, and the arrangement positions and the number of the miniature cameras correspond to those of the longitudinal drain pipes and the transverse drain pipes.