A water collection and drainage structure for a mining tunnel and a construction method thereof

Abstract

The present invention provides a water collection and drainage structure for a mining tunnel and a construction method thereof. The water collection and drainage structure includes a main line tunnel, a pump house and a transverse passage. The two ends of the transverse passage are connected to the lowest points of the two main line tunnels. The pump house is located in the middle of the transverse passage and is formed by expanding the transverse passage. A sewage collection pool is provided below the pump house. A seepage water collection pool is provided below the transverse passage and below the area of ​​the main line tunnel close to the transverse passage. The seepage water collection pool is built together with the main line tunnel and the transverse passage. The water collection and drainage structure for the mining tunnel of the present invention solves the water collection and drainage problems of the mining tunnel with a "V"-shaped longitudinal slope by providing a transverse passage between the lowest points of the two main line tunnels and building a seepage water collection pool below the main line tunnel and the transverse passage. At the same time, the construction method of the water collection and drainage structure provided by the present invention achieves rainwater and sewage diversion, energy saving and environmental protection, and the seepage water collection pool has a large capacity, high feasibility, and low engineering cost.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a water collection and drainage structure of a mining tunnel and a construction method thereof. Background Art

[0002] For mining tunnels with a "V"-shaped longitudinal slope, since there is a lowest point in the tunnel, a water collection pool and pump house are generally required at the lowest point to discharge tunnel seepage water and road flushing water out of the tunnel to prevent water accumulation in the tunnel from causing traffic interruption. The current conventional practice is to set up a water collection pool under the main line tunnel, which has limited capacity and is difficult to meet the water collection requirements for tunnels with large water leakage, such as underwater tunnels. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a water collection and drainage structure for a mining method tunnel and a construction method thereof, aiming to solve the water collection and drainage problem of a mining method tunnel with a "V"-shaped longitudinal slope in the prior art.

[0004] The present invention is implemented as follows: a water collection and drainage structure for a mining tunnel comprises two parallel main line tunnels, a pump room and a transverse passage, the longitudinal slope of the two parallel main line tunnels is in a "V" shape, the transverse passage is arranged perpendicular to the main line tunnels, both ends of the transverse passage are connected to the lowest points of the two main line tunnels, the pump room is located in the middle of the transverse passage and is formed by expanding the transverse passage; a seepage water collection pool is arranged below the transverse passage and below the area of ​​the main line tunnel close to the transverse passage, the seepage water collection pool is built together with the main line tunnel and the transverse passage; a first middle plate is arranged between the main line tunnel and the seepage water collection pool for the passage of vehicles or pedestrians in the upper tunnel; a second middle plate is arranged between the transverse passage and the seepage water collection pool for the passage of vehicles or pedestrians in the transverse passage.

[0005] Furthermore, a seepage ditch is provided at the bottom of the main line tunnel for collecting seepage water from the surrounding rock of the main line tunnel, and the seepage ditch is connected to the seepage water collection tank.

[0006] Furthermore, a road ditch for collecting road sewage is provided at the lowest point of the road surface cross slope of the main line tunnel, and a road sewage connecting pipe is provided at the bottom plate of the cross channel, and both ends of the sewage connecting pipe are respectively connected to the road ditch of the two main line tunnels; a sewage collecting tank is provided at the bottom of the pump room, and the sewage connecting pipe is connected to the sewage collecting tank at the lowest longitudinal point of the cross channel.

[0007] Furthermore, the longitudinal slope of the transverse passage is in a "V" shape, and its lowest point is located at the pump room.

[0008] Furthermore, the sewage connecting pipe is connected to the road ditch through an inspection well, and the bottom elevation of the inspection well is less than the smaller value between the bottom elevation of the road ditch and the bottom elevation of the sewage connecting pipe.

[0009] Furthermore, the pump room and the transverse passage are separated by a masonry wall.

[0010] Furthermore, the pump room is separated from the sewage collection tank and the seepage water collection tank at the bottom by a pump room middle plate, and a manhole for inspecting the sewage collection tank and the seepage water collection tank is provided on the pump room middle plate.

[0011] Furthermore, water pumps are provided in the seepage water collection tank and the sewage collection tank at the bottom of the pump room.

[0012] Furthermore, the road surface of the main line tunnel forms a transverse slope, which is inclined toward a side away from the transverse passage, and the road surface ditch is located at the lowest point of the transverse slope.

[0013] In order to solve the above technical problems, the present invention also provides a construction method of the above water collection and drainage structure, which comprises the following steps:

[0014] S1, construction main line tunnel to the leakage water collection pool;

[0015] S2. Excavate gradually downward until the bottom of the seepage water collection pool is reached. A construction ramp is formed from the conventional section of the main line tunnel to the bottom of the seepage water collection pool, which is used for slag discharge and material and equipment transportation;

[0016] S3. Complete the construction of the tunnel and leakage water collection pool within the scope of the main line tunnel;

[0017] S4. Construct the cross passage and the leakage water collection pool from the two main tunnels in opposite directions and connect them;

[0018] S5. Expand the excavation to the side in the middle of the horizontal passage to complete the construction of the pump room;

[0019] S6, pouring the second middle plate of the combined section of the horizontal channel and the leakage water collection tank, and the middle plate of the pump room;

[0020] S7: Excavate the rock mass below the ramp for the main tunnel construction and complete the construction of the main tunnel and the leakage water collection pool in the ramp section;

[0021] S8, pouring the first middle slab of the main line tunnel and the leakage water collection tank;

[0022] S9. Install water pumps and complete the construction of water collection and drainage structures.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The water collection and drainage structure of the mining tunnel of the present invention solves the drainage problem of the mining tunnel with a "V"-shaped longitudinal slope by setting a transverse passage between the lowest points of the two main line tunnels and building a seepage water collection pool under the main line tunnel and the transverse passage. At the same time, the construction method of the water collection and drainage structure provided by the present invention achieves rainwater and sewage diversion, energy saving and environmental protection, and the seepage water collection pool has a large capacity, high feasibility and low engineering cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic plan view of the main tunnel layer of the water collection and drainage structure of the mining method tunnel provided by an embodiment of the present invention;

[0026] Figure 2 It is a schematic plan view of a leakage water collection pool provided by an embodiment of the present invention;

[0027] Figure 3 is a schematic longitudinal section diagram of a transverse passage provided in an embodiment of the present invention;

[0028] Figure 4 It is a cross-sectional schematic diagram of a leakage water collection pool section of a main line tunnel provided by an embodiment of the present invention;

[0029] Figure 5 is a cross-sectional schematic diagram of a conventional section of a transverse channel provided by an embodiment of the present invention;

[0030] Figure 6 is a schematic cross-sectional view of a conventional section of a main line tunnel provided by an embodiment of the present invention;

[0031] Figure 7 1 is a schematic cross-sectional view of a pump room section of a transverse passage provided by an embodiment of the present invention;

[0032] Figure 8 is a schematic longitudinal section diagram of a pump room provided by an embodiment of the present invention;

[0033] Fig. 9 It is a schematic longitudinal section diagram of a main line tunnel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figure 1 and Figure 2 , showing a water collection and drainage structure of a mining tunnel provided by an embodiment of the present invention, which includes two parallel main line tunnels 1, a pump room 2, a cross passage 3 and a leakage water collection pool 4.

[0037] The longitudinal slope of the two parallel main tunnels 1 is in a "V" shape. The transverse channel 3 is arranged perpendicular to the main tunnel 1. The two ends of the transverse channel 3 are connected to the lowest points of the two main tunnels 1. The pump room 2 is located in the middle of the transverse channel 3 and is excavated by the transverse channel 3. Please refer to Figure 3 The longitudinal slope of the cross channel 3 is "V" shaped, and its lowest point is located at the pump room 2.

[0038] The above-mentioned seepage water collection tank 4 is arranged below the cross passage 3 and below the area of ​​the main line tunnel 1 close to the cross passage 3. The seepage water collection tank 4 is built together with the main line tunnel 1 and the cross passage 3. Figure 4 A first middle plate 11 (i.e. the bottom plate of the main tunnel 1) is provided between the main tunnel 1 and the leakage water collection tank 4, for vehicles or pedestrians in the upper tunnel to pass through. Figure 5 A second middle plate 31 is provided between the transverse passage 3 and the leakage water collecting pool 4 for vehicles or pedestrians in the transverse passage to pass through. In this embodiment, the first middle plate 11 and the second middle plate 31 are both reinforced concrete plates.

[0039] A seepage ditch 12 for collecting seepage water from the surrounding rock of the main line tunnel is arranged at the bottom of the main line tunnel 1 , and the seepage ditch 12 is connected to the seepage water collection tank 4 .

[0040] See also Figure 6The main line tunnel 1 is provided with a road ditch 13 for collecting road sewage at the lowest point of the road surface transverse slope. The road surface of the main line tunnel 1 forms a transverse slope, which is inclined toward the side away from the far transverse passage. The road ditch 13 is located at the lowest point of the transverse slope. A road sewage connecting pipe 5 is provided at the bottom plate of the transverse passage 3. The two ends of the sewage connecting pipe 5 are respectively connected to the road ditch 13 of the two main line tunnels 1; a sewage collecting tank 6 is provided at the bottom of the pump room 2. The sewage connecting pipe 5 is connected to the sewage collecting tank 6 at the lowest point in the longitudinal direction of the transverse passage. The sewage connecting pipe 5 is connected to the road ditch 13 through the inspection well 7. The bottom elevation of the inspection well 7 is slightly lower than the smaller value between the bottom elevation of the road ditch 13 and the bottom elevation of the sewage connecting pipe 5.

[0041] See also Figure 7 and Figure 8 The pump room 2 and the transverse passage 3 are separated by a masonry wall 32. The pump room 2 and the sewage collection tank 6 and the leakage water collection tank 4 at the bottom are separated by a pump room middle plate 21. A manhole for inspecting the sewage collection tank 6 and the leakage water collection tank 4 is provided on the pump room middle plate 21. A water pump 8 is provided in the leakage water collection tank 4 and the sewage collection tank 6 at the bottom of the pump room 2.

[0042] This embodiment also provides a construction method for the water collection and drainage structure, which specifically includes the following steps:

[0043] S1, construction of main line tunnel 1 to 4 leakage water collection tanks;

[0044] S2, dig down gradually until the bottom of the seepage water collection tank 4 is reached, see Fig. 9 A construction ramp 9 is formed from the conventional section of the main line tunnel 1 to the bottom of the leakage water collection tank 4, which is used for slag discharge and material and equipment transportation;

[0045] S3, complete the construction of the combined section of the tunnel and the leakage water collection tank 4 within the scope of the main line tunnel 1;

[0046] S4, construct the cross passage 3 and the leakage water collection tank 4 from the main line tunnels 1 on both sides in opposite directions and connect them;

[0047] S5. Expand the excavation to the side in the middle of the horizontal channel 3 to complete the construction of the pump room 2;

[0048] S6, pouring the second middle plate 31 and the pump room middle plate 21 of the combined section of the transverse channel 3 and the leakage water collection tank 4;

[0049] S7, excavate the rock mass below the construction ramp 9 of the main line tunnel 1, and complete the construction of the main line tunnel 1 and the leakage water collection tank 4 in the construction ramp 9 section;

[0050] S8, pouring the first middle plate 11 of the combined section of the main line tunnel 1 and the leakage water collection tank 4;

[0051] S9. Install water pump 2, pipes and other ancillary facilities to complete the construction of water collection and drainage structures.

[0052] The water collection and drainage structure of the mining method tunnel of this embodiment solves the drainage problem of the mining method tunnel with a "V"-shaped longitudinal slope by setting a transverse passage 3 between the lowest points of the two main line tunnels 1 and building a leakage water collection pool 4 under the main line tunnel 1 and the transverse passage 3.

[0053] At the same time, the construction method of the water collection and drainage structure provided in this embodiment achieves rainwater and sewage separation, energy saving and environmental protection, and the leakage water collection pool 4 has a large capacity, high feasibility and low project cost.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction method for a water collection and drainage structure of a mining tunnel, wherein the water collection and drainage structure comprises two parallel main line tunnels and a pump house; the longitudinal slope of the two parallel main line tunnels is in a "V" shape, the water collection and drainage structure further comprises a transverse passage, the transverse passage is arranged perpendicular to the main line tunnels, the two ends of the transverse passage are connected to the lowest points of the two main line tunnels, the pump house is located in the middle of the transverse passage, and is formed by digging the transverse passage; a seepage water collection pool is arranged below the transverse passage and below the area of ​​the main line tunnel close to the transverse passage, and the seepage water collection pool is built together with the main line tunnel and the transverse passage; a first middle plate is arranged between the main line tunnel and the seepage water collection pool for vehicles or pedestrians in the upper tunnel to pass; A second middle plate is provided between the transverse passage and the seepage water collection tank for the passage of vehicles or pedestrians in the transverse passage; a road ditch for collecting road sewage is provided at the lowest point of the road surface transverse slope of the main line tunnel, and a road sewage connecting pipe is provided at the bottom plate of the transverse passage, and the two ends of the sewage connecting pipe are respectively connected to the road ditch of the two main line tunnels; a sewage collecting tank is provided at the bottom of the pump room, and the sewage connecting pipe is connected to the sewage collecting tank at the lowest point in the longitudinal direction of the transverse passage; the pump room and the sewage collecting tank and the seepage water collecting tank at the bottom are separated by the pump room middle plate, and a manhole for inspecting the seepage water collecting tank is provided on the pump room middle plate; water pumps are provided in the seepage water collecting tank and the sewage collecting tank at the bottom of the pump room; It is characterized in that The construction method comprises the following steps: S1, construction main line tunnel to the leakage water collection pool; S2. Excavate gradually downward until the bottom of the seepage water collection pool is reached. A construction ramp is formed from the conventional section of the main line tunnel to the bottom of the seepage water collection pool, which is used for slag discharge and material and equipment transportation; S3. Complete the construction of the tunnel and leakage water collection pool within the scope of the main line tunnel; S4. Construct the cross passage and the leakage water collection pool from the two main tunnels in opposite directions and connect them; S5. Expand the excavation to the side in the middle of the horizontal passage to complete the construction of the pump room; S6, pouring the second middle plate of the combined section of the horizontal channel and the leakage water collection tank, and the middle plate of the pump room; S7: Excavate the rock mass below the ramp for the main tunnel construction and complete the construction of the main tunnel and the leakage water collection pool in the ramp section; S8, pouring the first middle slab of the main line tunnel and the leakage water collection tank; S9. Install water pumps and complete the construction of water collection and drainage structures.

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