CN114151129A - Tunnel pumping and drainage indoor test system and test method thereof - Google Patents
Tunnel pumping and drainage indoor test system and test method thereof Download PDFInfo
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- CN114151129A CN114151129A CN202111464690.2A CN202111464690A CN114151129A CN 114151129 A CN114151129 A CN 114151129A CN 202111464690 A CN202111464690 A CN 202111464690A CN 114151129 A CN114151129 A CN 114151129A
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- tunnel
- water
- drainage
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
- E21F16/02—Drainage of tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention discloses a tunnel pumping and draining indoor test system and a test method thereof, wherein the tunnel pumping and draining indoor test system comprises a plurality of water collecting ponds, a drainage detection device and a movable lifting device, the drainage detection device is arranged among the water collecting ponds so as to enable water flow to flow among the water collecting ponds, the water collecting ponds at least comprise a tunnel face water collecting pond, a middle water collecting pond and a tunnel outlet water collecting pond, and the movable lifting device is correspondingly arranged below the middle water collecting pond and the tunnel outlet water collecting pond. (advantageous effects).
Description
Technical Field
The invention relates to the technical field of tunnel detection, in particular to a tunnel pumping and draining indoor test system and a test method thereof.
Background
Tunnel construction generally includes tunnel construction projects of highway, railway, water conservancy, electric power etc. when the tunnel is under construction in the rich water region (the great region of water yield), because the tunnel excavation back underground water yield is big, therefore the tunnel construction of following slope drainage is little relatively, but in the tunnel construction occasion that needs long distance adverse slope drainage construction, the construction degree of difficulty will greatly increased. In the construction of some tunnels, some tunnels adopt a mode of arranging inclined shafts for 'long tunnel short driving', for example, Xiening tunnels, Zhongtian mountain tunnels and the like adopt the mode during construction, and when the mode is used, once underground water develops, the drainage pressure of tunnel construction is very large. Meanwhile, the water inrush disaster in the reverse slope construction is also a difficult problem in tunnel construction, and particularly, long-distance reverse slope construction and related drainage operation become important technical challenges and problems along with the transfer of the traffic construction environment of China to western mountainous areas with extremely complex terrain and geological conditions.
Disclosure of Invention
The invention aims to provide a tunnel pumping and drainage indoor test system and a test method thereof, which aim to solve the problem that the existing long-distance reverse slope construction and related drainage operation are difficult.
The technical scheme for solving the technical problems is as follows:
the invention provides a tunnel pumping and draining indoor test system which comprises a plurality of water collecting ponds, a drainage detection device and a movable lifting device, wherein the drainage detection device is arranged among the water collecting ponds so as to enable water flow to flow among the water collecting ponds, the water collecting ponds at least comprise a tunnel face water collecting pond, a middle water collecting pond and a tunnel outlet water collecting pond, and the movable lifting device is correspondingly arranged below the middle water collecting pond and the tunnel outlet water collecting pond.
Optionally, the drainage detection device includes a plurality of drainage pipes and a plurality of flow meters, and the plurality of flow meters and the plurality of drainage pipes correspond to one another.
Optionally, the tunnel drainage laboratory test system further comprises a plurality of pressurizing devices, and a plurality of pressurizing devices are arranged in the plurality of collecting ponds.
Optionally, the plurality of supercharging devices comprise water pumps and pumping pipes, and the water pumps correspond to the pumping pipes one by one.
Optionally, the tunnel drainage laboratory test system comprises a circulation tank, and the circulation tank and the plurality of collecting tanks are also connected through the drainage detection device.
Optionally, the mobile lifting device comprises a hydraulic jack and a roller set for supporting the hydraulic jack.
The invention also provides a test method based on the tunnel pumping and draining indoor test system, which comprises the following steps:
s1: building the tunnel pumping and draining indoor test system to obtain the original system configuration in the current test system;
s2: according to the original system configuration in the current test system, the water inflow of the tunnel face in the current test system and the water inflow of the drainage detection device in unit length are obtained;
s3: obtaining a current working condition result of the tunnel pumping and draining indoor test system according to the water inflow amount of the tunnel face in the current test system and the water inflow amount of the drainage detection device in unit length;
s4: changing the system configuration of the tunnel pumping and draining indoor test system, repeating the steps S2-S3 to obtain a plurality of different working condition results, and finishing the detection;
s5: and analyzing the results of the multiple working conditions to obtain the configuration information of the optimal tunnel drainage indoor test system in the preset working condition range.
Optionally, in the step S4, the modifying the system configuration of the tunnel pumping and draining indoor test system includes:
s41: changing the distance between the plurality of collecting ponds, and keeping the heights of different collecting ponds in the original system configuration to obtain a first working condition result;
s42: changing the heights of the different water collecting ponds, and keeping the distances among the water collecting ponds in the original system configuration to obtain a second working condition result;
s43: changing the power and the lift of the water pump, and keeping other parameters in the original system configuration unchanged to obtain a third working condition result;
s44: and changing the water flow of each position in the water flow process, and keeping other parameters in the original system configuration unchanged to obtain a fourth working condition result.
The invention has the following beneficial effects:
1. the site is converted into the indoor space from the construction site, so that the research is facilitated;
2. the influence factors are controllable, so that single variable, mutual influence among multiple variables and the like can be analyzed quantitatively and qualitatively;
3. the cost is low, the indoor cost is low, but the actual working condition is well simulated, and reliable support is provided for the design optimization of the tunnel pumping and drainage system for the on-site ultra-long deep-buried tunnel.
Drawings
FIG. 1 is a plan view of a testing system in a tunnel pumping and draining chamber provided in an embodiment of the present invention;
FIG. 2 is a perspective view of a testing system in a tunnel pumping and draining room provided in an embodiment of the present invention;
FIG. 3 is a flowchart of a testing method of a testing system in a tunnel pumping and draining room according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a substep of step S4 in fig. 3.
Description of the reference numerals
1-a palm surface water collecting tank; 2-an intermediate water collecting tank; 3-a tunnel outlet collecting tank; 4-a hydraulic jack; 5-a roller skating set; 6-a circulation tank; 7-a flow meter; 8-a drain pipe; 9-a water pump; 10-water suction pipe.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
The technical scheme for solving the technical problems is as follows:
first, the system configuration of the present invention will be explained:
according to the positions of the collecting tank and the pressurizing point and the source of the flow, the collecting tank in the tunnel can be divided into three categories:
1. palm surface water collecting tank 1 (V)1): the collecting tank is the collecting tank closest to the face of the tunnel. Water burst Q of palm surfacefWill drain into the pool, and in addition the collecting pool will also collect the gushing water of the tunnel with the rear end distance L range
2. Intermediate collecting tank 2 (V)i): this type of collecting tank is intended to collect the flow in the rear section of the tank in addition to
And needs to receive water from the front section of the collecting tank pump close to the face
3. Tunnel outlet catch basin 3 (V)3): the collecting tank needs to receive the previous oneFlow rate of each pool
But need not receive the amount of permeability of the latter section of surrounding rock.
A complete set of test equipment to simulate the drainage process of the entire tunnel requires at least 3 catch basins. In this test, the number of intermediate sumps 2 can be increased to simulate a longer distance drainage operation.
The invention provides a tunnel pumping and draining indoor test system which comprises a plurality of water collecting ponds, a drainage detection device and a movable lifting device, wherein the drainage detection device is arranged among the water collecting ponds so as to enable water flow to flow among the water collecting ponds, the water collecting ponds at least comprise a tunnel face water collecting pond 1, a middle water collecting pond 2 and a tunnel outlet water collecting pond 3, and the movable lifting device is correspondingly arranged below the middle water collecting pond 2 and the tunnel outlet water collecting pond 3.
The invention has the following beneficial effects:
1. the site is converted into the indoor space from the construction site, so that the research is facilitated;
2. the influence factors are controllable, so that single variable, mutual influence among multiple variables and the like can be analyzed quantitatively and qualitatively;
3. the cost is low, the indoor cost is low, but the actual working condition is well simulated, and reliable support is provided for the design optimization of the tunnel pumping and drainage system for the on-site ultra-long deep-buried tunnel.
Alternatively, in order to enable the water flow of the tunnel face collecting basin 1 to smoothly reach other collecting basins, the drainage detection device is designed to comprise a plurality of drainage pipes and a plurality of flow meters, and the plurality of flow meters and the plurality of drainage pipes are in one-to-one correspondence. The water flow in the tunnel face water collecting basin 1 can be introduced into other water collecting basins through the existence of a plurality of water discharging pipes, wherein, a flow meter is used for detecting and controlling the input flow and/or the output flow of the water flow in the plurality of water collecting basins. Of course, the specification of the drain pipe material and the flowmeter is not particularly limited, for example, in some embodiments, the drain pipe is a PVC pipe, and the plurality of flowmeters can be ensured to have the same specification, so as to ensure that the data acquired in the whole test system are consistent.
Specifically, referring to fig. 2, a flow meter 7a is installed at the water outlet end of the water outlet pipe 8a to monitor the water inflow of the tunnel surface water collecting tank 1.
A flowmeter 7b is arranged at the water outlet end of the water outlet pipe 8b for monitoring the water inflow between the rear end of the correction tunnel face and the previous water collecting tank.
A flowmeter 7c is arranged at the water outlet end of the water pumping pipe 10a for monitoring the water quantity input into the middle water collecting tank 2 by the palm surface water collecting tank 1, and a water pump 9a is arranged at the other end for pumping the water in the palm surface water collecting tank 1 into the middle water collecting tank 2.
A flowmeter 7d is arranged at the water outlet end of the water outlet pipe 8c for monitoring the 2V intermediate water collecting tankiAnd V(i+1)The water inflow of the tunnel between the two water collecting tanks.
A flowmeter 7e is arranged at the water outlet end of the water pumping pipe 10b for monitoring the water quantity input into the outlet end collecting tank from the intermediate collecting tank 2, and a water pump 9b is arranged at the other end for pumping the water in the intermediate collecting tank 2 into the tunnel outlet collecting tank 3.
A flow meter 7f is installed at the water outlet end of the water outlet pipe 8d to monitor the water discharge amount of the tunnel outlet sump 3.
Of course, the operational parameters of the pump installed in the sump can be monitored by setting up a monitor. And then additionally arranging and changing distribution points according to specific test requirements.
Alternatively, of course, in the present invention, a pumping device, that is, a pressurizing device, is further provided, and a plurality of the pressurizing devices are disposed in a plurality of the catch basins. Here, when designing the pressurizing devices, it is possible to design the pressurizing devices installed in different numbers in each of the water collecting tanks.
Optionally, the plurality of supercharging devices comprise water pumps and pumping pipes, and the water pumps correspond to the pumping pipes one by one. The water pumping pipes only act on a plurality of water collecting ponds, and certainly, the water pumps are usually arranged at the upstream positions of water flow, namely, in the invention, the water pumps are arranged in the sequence that the tunnel face water collecting ponds 1 flow to the middle water collecting ponds 2 and then flow to the tunnel outlet water collecting ponds 3, so that the water pumps are usually arranged in the tunnel face water collecting ponds 1 and the middle water collecting ponds 2, and certainly, the specific number is not limited and is at least matched with the number of the middle water collecting ponds 2 and then is added. Certainly, the pumping pipe can also be designed to be a PVC pipe, and the pipe diameter is also an important parameter.
In addition, the complete test equipment can simulate the pumping and drainage process and reduce the energy consumption, so that a circulating pool 6 is added in the test to reduce water waste, and the energy conservation and high efficiency are realized. The tunnel drainage indoor test system comprises a circulation pool 6, wherein the circulation pool 6 is connected with a plurality of water collecting pools through the drainage detection device.
Furthermore, the mobile lifting device comprises a hydraulic jack 4 and a pulley set 5, the pulley set 5 being used for supporting the hydraulic jack 4. By means of the device, the height and the position of the collecting tanks can be changed, so that the water head difference and the distance between the collecting tanks are changed. And (3) simulating drainage under different distances and height differences. Particularly, in the test process, the wheel slide group 5 can enable the position between the water collecting tanks to be changed more conveniently, and the hydraulic jack 4 can adjust the height of the water collecting tanks conveniently, so that the system configuration of the test system in the tunnel pumping and draining chamber is more convenient to replace.
The invention also provides a test method based on the tunnel pumping and drainage indoor test system, which is shown in fig. 3 and comprises the following steps:
s1: building the tunnel pumping and draining indoor test system to obtain the original system configuration in the current test system;
here, the system configuration mainly includes: the method comprises the following steps of water delivery pipe diameter d, water delivery pipe area A, pipeline gradient i, pipeline length L, flow velocity v, flow Q, water gravity gamma, pressure P, water pump lift H, power N and head loss hf.
Because the test flow belongs to pressure flow, a model is constructed by adopting a Reynolds similarity criterion,
that is, the reynolds number of the model is equal to the actual reynolds number Re (Re ═ vd/ν), where ν is the viscosity coefficient of the fluid, and it can be obtained:
in the formula, λ is a scale of the physical quantity corresponding to the actual prototype and the model.
In the test, firstly, the length scale lambda is determineddPipeline length scale, pump head scale and head loss scale lambdaL＝λH＝λhf＝λd(ii) a Because the same fluid (water) is adopted, the fluid density scale lambdaρ1, weight scale λγ1, viscosity coefficient scale λυWhen 1, we can then deduce:
speed scale:
flow rate scale:
pressure scale:
power scale:
s2: according to the original system configuration in the current test system, the water inflow of the tunnel face in the current test system and the water inflow of the drainage detection device in unit length are obtained;
s3: obtaining the current working condition result of the test system in the tunnel pumping and draining room according to the water inflow amount of the tunnel face in the current test system and the water inflow amount of the drainage detection device in unit length, and finishing the detection;
s4: changing the system configuration of the tunnel pumping and draining indoor test system, repeating the steps S2-S3 to obtain a plurality of different working condition results, and finishing the detection;
s5: and analyzing the results of the multiple working conditions to obtain the configuration information of the optimal tunnel drainage indoor test system in the preset working condition range.
Alternatively, referring to fig. 4, in the step S4, the modifying the system configuration of the tunnel pumping and draining indoor test system includes:
s41: changing the distance between the plurality of collecting ponds, and keeping the heights of different collecting ponds in the original system configuration to obtain a first working condition result;
s42: changing the heights of the different water collecting ponds, and keeping the distances among the water collecting ponds in the original system configuration to obtain a second working condition result;
s43: changing the power and the lift of the water pump, and keeping other parameters in the original system configuration unchanged to obtain a third working condition result;
s44: and changing the water flow of each position in the water flow process, and keeping other parameters in the original system configuration unchanged to obtain a fourth working condition result.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a tunnel drainage indoor test system, its characterized in that, tunnel drainage indoor test system includes a plurality of catch basins, drainage detection device and removes elevating gear, and is a plurality of the catch basin all is provided with each other drainage detection device to make rivers can be a plurality of flow between the catch basin, it is a plurality of the catch basin includes face catch basin (1), middle catch basin (2) and tunnel export catch basin (3) at least, middle catch basin (2) with the below of tunnel export catch basin (3) all corresponds and is provided with remove elevating gear.
2. The laboratory testing system for tunnel drainage of claim 1, wherein the drainage detection device comprises a plurality of drainage pipes and a plurality of flow meters, the plurality of flow meters and the plurality of drainage pipes corresponding one to one.
3. The tunnel drain laboratory test system of claim 1, further comprising a plurality of pressure boosting devices disposed in a plurality of said sumps.
4. The laboratory testing system for tunnel drainage of claim 3, wherein the plurality of pressurizing devices comprise water pumps and water pumping pipes, and the water pumps correspond to the water pumping pipes one to one.
5. The tunnel drain laboratory test system according to claim 1, characterized in that said tunnel drain laboratory test system comprises a circulation tank (6), said circulation tank (6) and a plurality of said catch tanks also being connected by said drain detection means.
6. The laboratory testing system for tunnel drains according to any of claims 1 to 5, characterized in that the mobile lifting device comprises a hydraulic jack (4) and a skidding group (5), the skidding group (5) being used to support the hydraulic jack (4).
7. A test method based on the test system in the tunnel pumping and draining chamber of any one of claims 1 to 6, characterized in that the test method comprises the following steps:
s1: building the tunnel pumping and draining indoor test system to obtain the original system configuration in the current test system;
s2: according to the original system configuration in the current test system, the water inflow of the tunnel face in the current test system and the water inflow of the drainage detection device in unit length are obtained;
s3: obtaining a current working condition result of the tunnel pumping and draining indoor test system according to the water inflow amount of the tunnel face in the current test system and the water inflow amount of the drainage detection device in unit length;
s4: changing the system configuration of the tunnel pumping and draining indoor test system, repeating the steps S2-S3 to obtain a plurality of different working condition results, and finishing the detection;
s5: and analyzing the results of the multiple working conditions to obtain the configuration information of the optimal tunnel drainage indoor test system in the preset working condition range.
8. The method for testing a tunnel drainage laboratory system according to claim 5, wherein the step S4 of changing the system configuration of the tunnel drainage laboratory system comprises:
s41: changing the distance between the plurality of collecting ponds, and keeping the heights of different collecting ponds in the original system configuration to obtain a first working condition result;
s42: changing the heights of the different water collecting ponds, and keeping the distances among the water collecting ponds in the original system configuration to obtain a second working condition result;
s43: changing the power and the lift of the water pump, and keeping other parameters in the original system configuration unchanged to obtain a third working condition result;
s44: and changing the water flow of each position in the water flow process, and keeping other parameters in the original system configuration unchanged to obtain a fourth working condition result.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072659A (en) * | 2012-01-16 | 2012-04-12 | Asahi Kasei Homes Co | Drainage structure |
| CN109724865A (en) * | 2019-02-26 | 2019-05-07 | 中铁二院工程集团有限责任公司 | Tunnel-liner water pressure monitoring STS system test set and test method |
| CN209457976U (en) * | 2019-02-11 | 2019-10-01 | 重庆交通大学 | A kind of laboratory testing rig that can be used for tunneling drain and prevent and kill off Study on Crystallization |
| CN110410143A (en) * | 2019-07-12 | 2019-11-05 | 中交一公局第四工程有限公司 | A kind of reverse-slope tunnel construction drainage system |
| CN213022777U (en) * | 2021-03-25 | 2021-04-20 | 四川藏区高速公路有限责任公司 | Tunnel water burst simulation test device |
| AU2021104358A4 (en) * | 2021-07-20 | 2021-10-14 | China Railway 18Th Bureau (Group) Co., Ltd. | A method for automatic drainage of tunnel water from inclined shaft |
-
2021
- 2021-12-03 CN CN202111464690.2A patent/CN114151129B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072659A (en) * | 2012-01-16 | 2012-04-12 | Asahi Kasei Homes Co | Drainage structure |
| CN209457976U (en) * | 2019-02-11 | 2019-10-01 | 重庆交通大学 | A kind of laboratory testing rig that can be used for tunneling drain and prevent and kill off Study on Crystallization |
| CN109724865A (en) * | 2019-02-26 | 2019-05-07 | 中铁二院工程集团有限责任公司 | Tunnel-liner water pressure monitoring STS system test set and test method |
| CN110410143A (en) * | 2019-07-12 | 2019-11-05 | 中交一公局第四工程有限公司 | A kind of reverse-slope tunnel construction drainage system |
| CN213022777U (en) * | 2021-03-25 | 2021-04-20 | 四川藏区高速公路有限责任公司 | Tunnel water burst simulation test device |
| AU2021104358A4 (en) * | 2021-07-20 | 2021-10-14 | China Railway 18Th Bureau (Group) Co., Ltd. | A method for automatic drainage of tunnel water from inclined shaft |
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