Ore tunnel water blocking structure

Abstract

The present invention discloses a ore body tunnel water blocking structure, comprising a concrete blocking body, a sump, a first drain pipe and a second drain pipe; the concrete blocking body is sealed and connected to the surrounding rock wall of the ore body tunnel and blocked in the ore body tunnel, dividing the ore body tunnel into a front section tunnel and a rear section tunnel; the sump includes a first drain pipe and a second drain pipe, the first drain pipe is arranged at the bottom of the front section tunnel, and the second drain pipe is arranged at the bottom of the rear section tunnel; the first drain pipe passes through the concrete blocking body, one end of the first drain pipe is connected to the first drain pipe and the other end is connected to the second drain pipe, and one end of the first drain pipe is provided with a first high-pressure valve; the second drain pipe passes through the concrete blocking body, one end of the second drain pipe extends into the front section tunnel and the other end extends into the rear section tunnel, and one end of the second drain pipe is also provided with a second high-pressure valve. The ore body tunnel water blocking structure of the present invention is highly reliable, can reduce drainage head, reduce total drainage volume and significantly reduce drainage costs.

Description

Technical Field

[0001] The invention relates to the technical field of mine drainage, in particular to a water blocking structure for an ore body tunnel. Background Art

[0002] A certain mine is divided into two ore bodies, the main ore body and the west ore body. The middle horizontal section is being mined. At present, the water inflow of the whole mine has exceeded 50,000m3 / d, of which the water inflow of the main ore body exceeds 20,000m3 / d, accounting for 40% of the total water inflow; the proportion of the main ore body in the total resource volume is relatively small, about 20%, and the mining cost is relatively high due to the mining method, equipment capacity and long transportation distance. Therefore, it was decided to seal the middle section of the main ore body and temporarily suspend the mining of the resources in the lower part of the sealed middle section of the tunnel. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a water blocking structure for an ore body tunnel, which is highly reliable, can reduce the drainage head, reduce the total drainage volume, and significantly reduce the drainage cost.

[0004] The ore body tunnel water blocking structure according to an embodiment of the present invention includes:

[0005] a concrete plugging body, wherein the concrete plugging body is sealedly connected to the surrounding rock wall of the ore body tunnel and blocks the ore body tunnel to divide the ore body tunnel into a front section tunnel and a rear section tunnel, wherein the lower ore body of the front section tunnel is a temporarily suspended ore body;

[0006] A sump, comprising a first sump and a second sump, wherein the first sump is arranged at the bottom of the front section roadway, and the second sump is arranged at the bottom of the rear section roadway;

[0007] a first drain pipe, the first drain pipe passing through the concrete sealing body, one end of the first drain pipe being connected to the first sump and the other end being connected to the second sump, and one end of the first drain pipe being further provided with a first high-pressure valve;

[0008] A second drain pipe passes through the concrete sealing body, one end of the second drain pipe extends into the front section of the tunnel and the other end extends into the rear section of the tunnel, and a second high-pressure valve is also provided at one end of the second drain pipe.

[0009] According to the ore body tunnel water blocking structure of the embodiment of the present invention, the working process is as follows: when the lower ore body of the front section tunnel needs to be temporarily developed or stopped, first, a first water collection pit and a second water collection pit are respectively set at the bottom of the front section tunnel and the bottom of the rear section tunnel, and then a first drainage pipe and a second drainage pipe are set in the ore body tunnel, one end of the first drainage pipe is connected to the first drainage pit and the other end is connected to the second drainage pit, one end of the second drainage pipe extends into the front section tunnel and the other end extends into the rear section tunnel, and a second drainage pipe is respectively provided at one end of the first drainage pipe and the other end of the second drainage pipe. a high-pressure valve and a second high-pressure valve; finally, concrete pouring is carried out in the ore body tunnel, and the concrete sealing body is sealed and connected with the surrounding rock wall of the ore body tunnel and sealed in the ore body tunnel. The first drain pipe and the second drain pipe pass through the concrete sealing body to prevent groundwater from flowing into the lower ore body, and the groundwater can be discharged through the upper water pump room; when the lower ore body is redeveloped, the first high-pressure valve and the second high-pressure valve are opened to allow the accumulated water in the rear tunnel to flow into the front tunnel and the lower ore body through the first drain pipe and the second drain pipe, and finally be discharged through the second water pump room at the lower ore body.

[0010] According to the ore body tunnel water blocking structure of the embodiment of the present invention, a first water collection pit and a second water collection pit are respectively set at the bottom of the front tunnel and the bottom of the rear tunnel, so that the flowing water of the front tunnel and the rear tunnel can be conveniently introduced into the first water collection pit and the second water collection pit respectively to avoid affecting the construction; the first drain pipe connects the first water collection pit and the second water collection pit, and when it is necessary to discharge the water of the second water collection pit into the first water collection pit, the first high-pressure valve is opened to discharge the water of the rear tunnel into the front tunnel, thereby protecting the concrete blocking body during construction, and the concrete blocking body will The ore body tunnel is blocked to prevent groundwater from flowing into the lower temporarily suspended ore body, so that groundwater accumulates in the rear tunnel, and the groundwater is discharged by using the first pump house located above the lower temporarily suspended ore body, which reduces the drainage head and the total drainage volume, and can greatly reduce the drainage cost of the mine; when the lower ore body is redeveloped, the first high-pressure valve and the second high-pressure valve are opened to allow the accumulated water in the rear tunnel to flow into the front tunnel and the lower ore body through the first drain pipe and the second drain pipe, and be discharged through the second pump house at the lower ore body. In summary, the ore body tunnel water blocking structure of the present invention has high reliability, can reduce the drainage head, reduce the total drainage volume and greatly reduce the drainage cost.

[0011] According to one embodiment of the present invention, the surrounding rock wall of the ore body tunnel includes a first surrounding rock wall located between the front tunnel and the rear tunnel, the first surrounding rock wall forms a wedge-shaped space, and the cross-sectional size of the wedge-shaped space gradually changes from large to small in the direction from the rear tunnel to the front tunnel; accordingly, the concrete sealing body includes a concrete sealing body main body; the cross-sectional size of the concrete sealing body main body gradually changes from large to small in the direction from the rear tunnel to the front tunnel to form a wedge-shaped body, the concrete sealing body main body is arranged in the wedge-shaped space and the outer peripheral surface of the concrete sealing body main body is sealed and connected to the first surrounding rock wall.

[0012] According to a further embodiment of the present invention, the dimensions of the concrete sealing body in the width direction and the height direction gradually decrease from the rear section of the roadway to the front section of the roadway.

[0013] According to a further embodiment of the present invention, the main body of the concrete sealing body is bilaterally symmetrical along the center line of the ore body tunnel.

[0014] According to some embodiments of the present invention, the surrounding rock wall of the ore body tunnel also includes a second surrounding rock wall and a third surrounding rock wall, which are respectively located on the front and rear sides of the first surrounding rock wall and are connected to the first surrounding rock wall; accordingly, the concrete sealing body also includes a front concrete support and a rear concrete support, the front concrete support is respectively sealed with the second surrounding rock wall and the main body of the concrete sealing body, and the rear concrete support is respectively sealed with the third surrounding rock wall and the main body of the concrete sealing body.

[0015] According to a further embodiment of the present invention, it also includes a front grouting pipe and a rear grouting pipe; wherein, there are multiple front grouting pipes, multiple front grouting pipes are distributed along the front-to-back direction and the circumferential direction through the front concrete support, and one end of multiple front grouting pipes is anchored on the second surrounding rock wall; there are multiple rear grouting pipes, multiple rear grouting pipes are distributed along the front-to-back direction and the circumferential direction through the rear concrete support, and one end of multiple rear grouting pipes is anchored on the third surrounding rock wall.

[0016] According to some embodiments of the present invention, a pressure gauge is further provided at one end of the second drain pipe.

[0017] According to some embodiments of the present invention, a concrete pier is further provided in the front tunnel, and the concrete pier supports one end of the second drainage pipe.

[0018] According to some embodiments of the present invention, there are multiple second drain pipes and multiple second high-pressure valves, one end of each of the multiple second drain pipes extends into the front section of the tunnel, the other end of each of the multiple second drain pipes extends into the rear section of the tunnel, and one end of each of the multiple second drain pipes is correspondingly provided with a second high-pressure valve.

[0019] According to some embodiments of the present invention, the first sump, the second sump, and the first drainage pipe are arranged adjacent to a same side of the ore body tunnel.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic elevational structural diagram of a mine tunnel water blocking structure according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic plan view of the structure of the ore body tunnel water blocking structure according to an embodiment of the present invention.

[0024] Figure 3 for Figure 1 Schematic cross-sectional view at AA in the middle.

[0025] Figure 4 This is a schematic diagram of a scenario application of the ore tunnel water blocking structure according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] Ore tunnel water blocking structure 1000

[0028] Concrete sealing body 1

[0029] Concrete plugging body 101 Front concrete support 102 Rear concrete support 103

[0030] Sump 2

[0031] The first water pit 201 The second water pit 202

[0032] First drain pipe 3

[0033] Second drain pipe 4

[0034] Ore body tunnel 5

[0035] Front Lane 501 Back Lane 502

[0036] First high pressure valve 6

[0037] Second high pressure valve 7

[0038] Surrounding rock wall 8

[0039] First surrounding rock wall 801 Second surrounding rock wall 802 Third surrounding rock wall 803

[0040] Front grouting pipe 9

[0041] Post-grouting pipe 10

[0042] Pressure gauge 11

[0043] Concrete pier 12

[0044] First Pump Room 13

[0045] Second Pump Room 14 DETAILED DESCRIPTION

[0046] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0047] The following combination Figures 1 to 4 The ore body tunnel water blocking structure 1000 according to an embodiment of the present invention is described.

[0048] like Figures 1 to 4 As shown, the ore body tunnel water blocking structure 1000 according to an embodiment of the present invention includes a concrete blocking body 1, a sump 2, a first drain pipe 3 and a second drain pipe 4. The concrete blocking body 1 is sealed and connected to the surrounding rock wall 8 of the ore body tunnel 5 and blocked in the ore body tunnel 5 to divide the ore body tunnel 5 into a front tunnel 501 and a rear tunnel 502. The lower ore body of the front tunnel 501 is a temporarily suspended ore body; the sump 2 includes a first sump 201 and a second sump 202. The first sump 201 is set in the front tunnel The bottom of the road 501 is provided, and the second collecting pit 202 is provided at the bottom of the rear section of the roadway 502; the first drain pipe 3 passes through the concrete sealing body 1, one end of the first drain pipe 3 is connected to the first collecting pit 201 and the other end is connected to the second collecting pit 202, and one end of the first drain pipe 3 is also provided with a first high-pressure valve 6; the second drain pipe 4 passes through the concrete sealing body 1, one end of the second drain pipe 4 extends into the front section of the roadway 501 and the other end extends into the rear section of the roadway 502, and one end of the second drain pipe 4 is also provided with a second high-pressure valve 7.

[0049] Specifically, the concrete blocking body 1 is sealed and connected to the surrounding rock wall 8 of the ore body tunnel 5 and is blocked in the ore body tunnel 5, so as to divide the ore body tunnel 5 into the front tunnel 501 and the rear tunnel 502, and the lower ore body of the front tunnel 501 is a temporarily suspended ore body; it can be understood that when the lower ore body of the front tunnel 501 needs to be temporarily suspended, a concrete blocking body 1 is set in the ore body tunnel 5, and the concrete blocking body 1 is sealed and connected to the surrounding rock wall 8 of the ore body tunnel 5, so that the ore body tunnel 5 is blocked, which can prevent groundwater from flowing into the lower ore body, and the groundwater can be discharged through the first water pump room 13 located above the lower temporarily suspended ore body (such as Figure 4 As shown), the use of the second water pump house 14 located at the lower part of the temporarily suspended ore body is avoided, thereby reducing the drainage head and the total drainage volume, which can significantly reduce the drainage cost of the mine.

[0050] The collection pit 2 includes a first collection pit 201 and a second collection pit 202. The first collection pit 201 is set at the bottom of the front section tunnel 501, and the second collection pit 202 is set at the bottom of the rear section tunnel 502. It can be understood that before the construction of the ore body tunnel water blocking structure 1000, the first collection pit 201 and the second collection pit 202 are set at the bottom of the front section tunnel 501 and the bottom of the rear section tunnel 502 respectively. Thus, when the ore body tunnel water blocking structure 1000 is constructed, the flowing water in the front section tunnel 501 can be introduced into the first collection pit 201, and the flowing water in the rear section tunnel 502 can be introduced into the second collection pit 202, thereby avoiding the flowing water in the ore body tunnel 5 affecting the construction and improving the construction efficiency.

[0051] The first drain pipe 3 passes through the concrete sealing body 1, one end of the first drain pipe 3 is connected to the first sump 201 and the other end is connected to the second sump 202, and one end of the first drain pipe 3 is also provided with a first high-pressure valve 6; it can be understood that the first drain pipe 3 is first set in the ore body tunnel 5, and then the concrete sealing body 1 is poured, thereby, the first drain pipe 3 passes through the concrete sealing body 1; when it is necessary to discharge the water from the second sump 202 into the first sump 201, the first high-pressure valve 6 is opened to discharge the water from the rear section tunnel 502 into the front section tunnel 501, thereby protecting the concrete sealing body 1 during construction, and when it is necessary to redevelop the lower ore body, the first drain pipe 3 can be used to quickly discharge the accumulated water in the rear section tunnel 502 into the front section tunnel 501; the first high-pressure valve 6 is used to open or close the first drain pipe 3, thereby controlling whether the accumulated water in the rear section tunnel 502 is discharged into the front section tunnel 501 through the first drain pipe 3.

[0052] A second drain pipe 4 passes through the concrete sealing body 1, with one end of the second drain pipe 4 extending into the front tunnel 501 and the other end extending into the rear tunnel 502. A second high-pressure valve 7 is also provided at one end of the second drain pipe 4. It is understood that the second drain pipe 4 is first installed in the ore body tunnel 5, and then the concrete sealing body 1 is poured. Thus, the second drain pipe 4 passes through the concrete sealing body 1. When the ore body needs to be redeveloped, the second drain pipe 4 can be used to quickly drain accumulated water from the rear tunnel 502 into the front tunnel 501. The second high-pressure valve 7 is used to open or close the second drain pipe 4, thereby controlling whether accumulated water in the rear tunnel 502 is discharged into the front tunnel 501 through the second drain pipe 4.

[0053] According to the ore body tunnel water blocking structure 1000 of the embodiment of the present invention, the working process is as follows: when the lower ore body of the front section tunnel 501 needs to be temporarily developed or stopped, first, a first water collection pit 201 and a second water collection pit 202 are respectively set at the bottom of the front section tunnel 501 and the bottom of the rear section tunnel 502, and then a first drainage pipe 3 and a second drainage pipe 4 are set in the ore body tunnel 5, one end of the first drainage pipe 3 is connected to the first drainage pit 201 and the other end is connected to the second drainage pit 202, one end of the second drainage pipe 4 extends into the front section tunnel 501 and the other end extends into the rear section tunnel 502, and at one end of the first drainage pipe 3 and the second drainage pipe 4 are connected. The first and second high-pressure valves 6 and 7 are respectively provided at the ends; finally, concrete pouring is carried out in the ore body tunnel 5, and the concrete sealing body 1 is sealed and connected with the surrounding rock wall 8 of the ore body tunnel 5, and is sealed in the ore body tunnel 5. The first drain pipe 3 and the second drain pipe 4 pass through the concrete sealing body 1, which can prevent groundwater from flowing into the lower ore body, and the groundwater can be discharged through the first water pump room 13; when the lower ore body is redeveloped, the first high-pressure valve 6 and the second high-pressure valve 7 are opened to allow the accumulated water in the rear tunnel 502 to flow into the front tunnel 501 and the lower ore body through the first drain pipe 3 and the second drain pipe 4, and finally be discharged through the second water pump room 14 at the lower ore body.

[0054] According to the ore body tunnel water blocking structure 1000 of the embodiment of the present invention, a first water collection pit 201 and a second water collection pit 202 are respectively set at the bottom of the front tunnel 501 and the bottom of the rear tunnel 502, so as to facilitate the flow of water from the front tunnel 501 and the rear tunnel 502 to be respectively introduced into the first water collection pit 201 and the second water collection pit 202 to avoid affecting the construction; the first drain pipe 3 connects the first water collection pit 201 and the second water collection pit 202, and when it is necessary to discharge the water from the second water collection pit 202 into the first water collection pit 201, the first high-pressure valve 6 is opened to discharge the water from the rear tunnel 502 into the front tunnel 501, thereby protecting the mine during construction. The concrete plugging body 1 blocks the ore body tunnel 5, which can prevent groundwater from flowing into the lower temporarily suspended ore body, causing groundwater to accumulate in the rear tunnel 502, and using the first water pump room 13 located above the lower temporarily suspended ore body to drain the groundwater, reducing the drainage head, reducing the total drainage volume, and significantly reducing the drainage costs of the mine; when the lower ore body is redeveloped, the first high-pressure valve 6 and the second high-pressure valve 7 are opened to allow the accumulated water in the rear tunnel 502 to flow into the front tunnel 501 and the lower ore body through the first drain pipe 3 and the second drain pipe 4, and be discharged through the second water pump room 14 at the lower ore body. In summary, the ore body tunnel water blocking structure 1000 of the present invention has high reliability, can reduce the drainage head, reduce the total drainage volume and significantly reduce drainage costs.

[0055] According to one embodiment of the present invention, the surrounding rock wall 8 of the ore body tunnel 5 includes a first surrounding rock wall 801 located between the front tunnel 501 and the rear tunnel 502, and the first surrounding rock wall 801 forms a wedge-shaped space, and the cross-sectional size of the wedge-shaped space gradually changes from large to small in the direction from the rear tunnel 502 to the front tunnel 501; accordingly, the concrete sealing body 1 includes a concrete sealing body main body 101; the cross-sectional size of the concrete sealing body main body 101 gradually changes from large to small in the direction from the rear tunnel 502 to the front tunnel 501 to form a wedge-shaped body, the concrete sealing body main body 101 is arranged in the wedge-shaped space and the outer peripheral surface of the concrete sealing body main body 101 is sealed and connected to the first surrounding rock wall 801. It can be understood that the main body 101 of the concrete sealing body is a wedge-shaped body and is sealed and connected to the first surrounding rock wall 801, with a good sealing effect. The cross-sectional dimensions of the main body 101 of the concrete sealing body gradually change from large to small in the direction from the rear section of the tunnel 502 to the front section of the tunnel 501. Therefore, the main body 101 of the concrete sealing body has a good ability to resist hydrostatic pressure. The relevant dimensions of the wedge-shaped body need to be calculated and determined based on parameters such as hydrostatic pressure, surrounding rock conditions, and tunnel section.

[0056] like Figure 1 and Figure 2As shown, according to a further embodiment of the present invention, the width and height dimensions of the concrete sealing body 101 gradually decrease from the rear tunnel 502 to the front tunnel 501. It can be understood that the gradual decrease in the left-right and up-down dimensions of the concrete sealing body 1 improves the concrete sealing effect and its ability to resist hydrostatic pressure. The dimensions of the concrete sealing body 101 are calculated and determined based on parameters such as head pressure, surrounding rock conditions, and tunnel cross-section.

[0057] like Figure 3 As shown, according to a further embodiment of the present invention, the concrete sealing body 101 is bilaterally symmetrical along the center line of the ore body tunnel 5. Therefore, the concrete sealing body 101 has a good ability to resist hydrostatic pressure, is more evenly stressed, and has higher structural reliability.

[0058] According to some embodiments of the present invention, the surrounding rock wall 8 of the ore body tunnel 5 further includes a second surrounding rock wall 802 and a third surrounding rock wall 803, which are respectively located in front of and behind the first surrounding rock wall 801 and connected to the first surrounding rock wall 801. Accordingly, the concrete sealing body 1 further includes a front concrete support 102 and a rear concrete support 103, wherein the front concrete support 102 is sealedly connected to the second surrounding rock wall 802 and the concrete sealing body main body 101, respectively, and the rear concrete support 103 is sealedly connected to the third surrounding rock wall 803 and the concrete sealing body main body 101. It is understood that the front concrete support 102 and the rear concrete support 103 respectively support the concrete sealing body main body 101 on the front and rear sides of the concrete sealing body 1, so that the position of the concrete sealing body 1 is fixed, the ability to resist hydrostatic pressure is good, the safety of workers is improved, and the concrete sealing body 1 is prevented from moving, which would reduce the water blocking effect and cause accumulated water to flow into the lower ore body.

[0059] It should be noted that the lengths of the front concrete support 102 and the rear concrete support 103 need to be determined in combination with the tunnel section, surrounding rock conditions and the structure of the concrete plugging body 101. Preferably, the concrete plugging body 101, the front concrete support 102 and the rear concrete support 103 are integral concrete castings.

[0060] According to a further embodiment of the present invention, it also includes a front grouting pipe 9 and a rear grouting pipe 10; wherein, there are multiple front grouting pipes 9, and the multiple front grouting pipes 9 are distributed along the front-to-back direction and the circumferential direction through the front concrete support 102, and one end of the multiple front grouting pipes 9 is anchored on the second surrounding rock wall 802; there are multiple rear grouting pipes 10, and the multiple rear grouting pipes 10 are distributed along the front-to-back direction and the circumferential direction through the rear concrete support 103, and one end of the multiple rear grouting pipes 10 is anchored on the third surrounding rock wall 803. It can be understood that the front grouting pipe 9 is anchored on the second surrounding rock wall 802, and the rear grouting pipe 10 is anchored on the third surrounding rock wall 803, and the front concrete support 102 and the rear concrete support 103 are poured on the second surrounding rock wall 802 and the third surrounding rock wall 803 respectively. After the pouring is completed, grouting is carried out to the second surrounding rock wall 802 through the front grouting pipe 9, and grouting is carried out to the third surrounding rock wall 803 through the rear grouting pipe 10, so as to reinforce the second surrounding rock wall 802 and the third surrounding rock wall 803 as a whole, and prevent the upper water gushing from the ore body tunnel 5 from entering the lower ore body through the cracks between the second surrounding rock wall 802 and the front concrete support 102, and the third surrounding rock wall 803 and the rear concrete support 103.

[0061] It should be noted that the front grouting pipes 9 are densely arranged on the second surrounding rock wall 802, and the rear grouting pipes 10 are densely arranged on the third surrounding rock wall 803 to ensure the grouting effect. The ore body tunnel water blocking structure 1000 has a better water blocking effect.

[0062] According to some embodiments of the present invention, a pressure gauge 11 is further provided at one end of the second drain pipe 4. This allows monitoring of the hydrostatic pressure resisted by the blocking structure of the ore tunnel 5. When the pressure indicated by the pressure gauge 11 is too high, the accumulated water in the rear tunnel 502 is drained into the front tunnel 501, thereby preventing damage to the blocking structure of the ore tunnel 5 due to excessive hydrostatic pressure and ensuring the safety of workers.

[0063] According to some embodiments of the present invention, a concrete buttress 12 is further provided in the front tunnel 501, and the concrete buttress 12 supports one end of the second drain pipe 4. It is understood that one end of the second drain pipe 4 extends into the front tunnel 501, and the concrete buttress 12 supports one end of the second drain pipe 4, ensuring the stability of the second drain pipe 4 and preventing the front end of the second drain pipe 4 from bending downward due to the excessive length of the front end.

[0064] According to some embodiments of the present invention, there are multiple second drainage pipes 4 and multiple second high-pressure valves 7. One end of each of the multiple second drainage pipes 4 extends into the front-section roadway 501, and the other end of each of the multiple second drainage pipes 4 extends into the rear-section roadway 502. One end of each of the multiple second drainage pipes 4 is correspondingly provided with a second high-pressure valve 7. It is understandable that the number and diameter of the second drainage pipes 4 are calculated and determined based on the actual total water inflow, and the multiple second high-pressure valves 7 are installed one-to-one at one end of the multiple second drainage pipes 4. When it is necessary to drain the accumulated water in the rear-section roadway 502, the multiple second high-pressure valves 7 are opened, and the accumulated water in the rear-section roadway 502 is drained into the front-section roadway 501 through the multiple second drainage pipes 4. This can increase the drainage speed and shorten the mining period of the lower ore body.

[0065] According to some embodiments of the present invention, the first sump 201, the second sump 202, and the first drain pipe 3 are arranged adjacent to the same side of the ore body tunnel 5. It is understandable that during the construction of the ore body tunnel water blocking structure 1000, workers and equipment work in the tunnel. The first sump 201, the second sump 202, and the first drain pipe 3 are arranged on the same side adjacent to the ore body tunnel 5 to facilitate the normal construction of the ore body tunnel water blocking structure 1000 and ensure construction efficiency.

[0066] like Figure 4 As shown, the ore body tunnel water blocking structure 1000 of the present invention is described below with a specific example.

[0067] An ore body tunnel water blocking structure 1000 is set in the ore body tunnel 5, and groundwater accumulates in the rear tunnel 502. The ore body tunnel water blocking structure 1000 prevents groundwater from flowing into the lower ore body. The second water pump room 14 is suspended, and the groundwater level rises after blocking. The groundwater is discharged through the first water pump room 13, which reduces the drainage head. The groundwater accumulates in the rear tunnel 502, reducing the total drainage volume, which can greatly reduce the drainage cost of the mine.

[0068] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A water blocking structure for an ore body tunnel, characterized in that: include: a concrete plugging body, wherein the concrete plugging body is sealedly connected to the surrounding rock wall of the ore body tunnel and blocks the ore body tunnel to divide the ore body tunnel into a front section tunnel and a rear section tunnel, wherein the lower ore body of the front section tunnel is a temporarily suspended ore body; A sump, comprising a first sump and a second sump, wherein the first sump is arranged at the bottom of the front section roadway, and the second sump is arranged at the bottom of the rear section roadway; a first drain pipe, the first drain pipe passing through the concrete sealing body, one end of the first drain pipe being connected to the first sump and the other end being connected to the second sump, and one end of the first drain pipe being further provided with a first high-pressure valve; a second drain pipe, the second drain pipe passing through the concrete blocking body, one end of the second drain pipe extending into the front section tunnel and the other end extending into the rear section tunnel, and one end of the second drain pipe further provided with a second high-pressure valve; When the lower ore body of the front tunnel needs to be temporarily suspended, groundwater is discharged through the first water pump room located above the lower ore body where development is temporarily suspended; when the lower ore body is redeveloped, groundwater is discharged through the second water pump room at the lower ore body.

2. The ore body tunnel water blocking structure according to claim 1, characterized in that: The surrounding rock wall of the ore body tunnel includes a first surrounding rock wall located between the front tunnel and the rear tunnel, the first surrounding rock wall forms a wedge-shaped space, and the cross-sectional size of the wedge-shaped space gradually changes from large to small in the direction from the rear tunnel to the front tunnel; accordingly, the concrete sealing body includes a concrete sealing body main body; the cross-sectional size of the concrete sealing body main body gradually changes from large to small in the direction from the rear tunnel to the front tunnel to form a wedge-shaped body, the concrete sealing body main body is arranged in the wedge-shaped space and the outer peripheral surface of the concrete sealing body main body is sealed and connected to the first surrounding rock wall.

3. The ore body tunnel water blocking structure according to claim 2, characterized in that: The dimensions of the concrete sealing body in the width direction and the height direction gradually decrease from the rear section of the tunnel to the front section of the tunnel.

4. The ore body tunnel water blocking structure according to claim 3, characterized in that: The main body of the concrete blocking body is bilaterally symmetrical along the center line of the ore body tunnel.

5. The ore body tunnel water blocking structure according to any one of claims 2 to 4, characterized in that: The surrounding rock walls of the ore body tunnel also include a second surrounding rock wall and a third surrounding rock wall, which are respectively located on the front and rear sides of the first surrounding rock wall and are connected to the first surrounding rock wall; accordingly, the concrete sealing body also includes a front concrete support and a rear concrete support, the front concrete support is respectively sealed with the second surrounding rock wall and the main body of the concrete sealing body, and the rear concrete support is respectively sealed with the third surrounding rock wall and the main body of the concrete sealing body.

6. The ore body tunnel water blocking structure according to claim 5, characterized in that: It also includes front grouting pipes and rear grouting pipes; wherein, there are multiple front grouting pipes, multiple front grouting pipes are distributed along the front-to-back direction and the circumferential direction through the front concrete support, and one end of multiple front grouting pipes is anchored on the second surrounding rock wall; there are multiple rear grouting pipes, multiple rear grouting pipes are distributed along the front-to-back direction and the circumferential direction through the rear concrete support, and one end of multiple rear grouting pipes is anchored on the third surrounding rock wall.

7. The ore body tunnel water blocking structure according to claim 5, characterized in that: One end of the second drain pipe is also provided with a pressure gauge.

8. The ore body tunnel water blocking structure according to claim 5, characterized in that: It also includes a concrete pier arranged in the front section of the tunnel, and the concrete pier supports one end of the second drainage pipe.

9. The ore body tunnel water blocking structure according to claim 5, characterized in that: There are multiple second drain pipes and multiple second high-pressure valves. One end of each of the second drain pipes extends into the front section of the tunnel, and the other end of each of the second drain pipes extends into the rear section of the tunnel. One end of each of the second drain pipes is correspondingly provided with a second high-pressure valve.

10. The ore body tunnel water blocking structure according to claim 5, characterized in that: The first sump, the second sump, and the first drain pipe are arranged adjacent to a same side of the ore body tunnel.

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