Mine excavation drainage control water and anti-collision device and construction method thereof

Abstract

The present application relates to the technical fields of mine drainage, and discloses a mine drainage flow guide, water control and impact prevention device and a construction method thereof, which comprises: a water storage tank arranged in a goaf; a negative pressure mechanism in communication with the water storage tank, with the communication part close to the top of the water storage tank; a flow guide pipe with one end in communication with the water storage tank and the other end penetrating through the stratum and in communication with the communication area of the fault and the aquifer; and a drainage pipe with one end in communication with the water storage tank, with the communication part close to the bottom of the water storage tank, and the other end in communication with the mine drainage system. Before the flow guide, water control and impact prevention device is constructed, the micro fissures in the communication area of the fault and the aquifer are expanded to form unobstructed flow guide fissures with a certain flow rate by hydraulic fracturing, and then the water in the communication area is stably and efficiently guided to the water storage tank by negative pressure suction, and when the water storage reaches a certain amount, the water can be guided to the mine drainage system through the drainage pipe.

Description

Technical Field

[0001] This invention relates to the field of drainage technology in mining, and in particular to a mining drainage and water control device and its construction method. Background Technology

[0002] During the mining process, the permeable connection between the goaf and nearby complex structures (faults, etc.) and aquifers often leads to the risk of water inrush. Once the aquifer water suddenly rushes into the goaf, it will pose a serious threat to the safety of mine personnel and underground engineering.

[0003] Traditional drainage and water control measures rely on complex structures—tiny fissures within the aquifer's interconnected zone—for drainage and water control. As a result, they suffer from low diversion efficiency and poor drainage stability. Furthermore, the diversion pipes are frequently blocked, which can easily lead to secondary risks.

[0004] In view of this, in order to improve the efficiency of diversion and reduce secondary risks, how to establish an efficient and stable diversion system with dredging function in complex structures and aquifer connectivity zones is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a mining diversion and water control anti-scour device and its construction method to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a mining diversion and water control anti-scour device, comprising: Water storage tanks are installed within the goaf area; A negative pressure mechanism is connected to the water storage tank, with the connection point near the top of the water storage tank; The diversion pipe is connected to the water storage tank at one end and passes through the strata at the other end, connecting with the fault and the aquifer area. The drain pipe has one end connected to the water storage tank, with the connection point near the bottom of the water storage tank, and the other end connected to the mine drainage system; the negative pressure mechanism is used to pump the water storage tank to negative pressure and guide the water in the connected area into the water storage tank through the diversion pipe, and the drain pipe is used to guide the water into the mine drainage system.

[0007] Furthermore, the negative pressure mechanism includes: A negative pressure pump is connected to a water storage tank via a vacuum pipe, and a negative pressure valve is installed on the vacuum pipe.

[0008] Furthermore, the drain pipe is connected to the water storage tank via a connecting pipe, and a drain valve is installed on the connecting pipe.

[0009] Furthermore, a drainage valve is provided on the drainage tube, and a sleeve is provided outside the drainage tube.

[0010] Furthermore, it also includes: The flushing device is connected to the drainage pipe via a flushing pipe, and the flushing pipe is equipped with a high-pressure pump and a flushing valve; the flushing device is filled with water or cleaning solution, and the water or cleaning solution is pumped to the drainage pipe by the high-pressure pump.

[0011] Furthermore, it also includes: The sludge collection device is connected to the bottom of the water storage tank via a collection pipe, and a sludge collection valve is installed on the collection pipe.

[0012] Furthermore, a level gauge is installed near the top of the water storage tank, and the level gauge is located at the limit water level line of the water storage tank.

[0013] Furthermore, a filter screen is provided at the other end of the drainage tube.

[0014] This invention also provides a construction method for a mine excavation and drainage water control and scour prevention device, used for constructing such a device, comprising the following steps: S1: Construct an ultra-long borehole from the goaf at a preset angle. One end of the ultra-long borehole is connected to the goaf, and the other end is connected to the connected area. S2: The sealing device is lowered into the ultra-long borehole. The sealing device forms a fracturing chamber in the ultra-long borehole. The hydraulic fracturing pump station is arranged in the goaf area. High-pressure water is injected into the fracturing chamber through the hydraulic fracturing pump station to perform hydraulic fracturing on the connected area, so that the original fractures in the connected area are expanded to form drainage fractures. S3: After hydraulic fracturing is completed, release the fracturing pressure and retrieve the sealing device. Lower the casing into the ultra-long borehole and lower the drainage pipe into the casing so that one end of the drainage pipe is connected to the water storage tank and the other end is connected to the connected area.

[0015] The present invention discloses the following technical effects: 1. Before constructing the diversion and water control anti-scour device, the tiny fissures in the fault and aquifer connected area are expanded by hydraulic fracturing to form unobstructed diversion fissures with a certain flow rate. Then, the water in the connected area is stably and efficiently diverted to the storage tank by negative pressure suction. When the water in the storage tank reaches a certain amount, the water can be introduced into the mine drainage system through the drainage pipe.

[0016] 2. The drainage tube is connected to the flushing device, and water or cleaning solution can be pumped to the drainage tube by a high-pressure pump. This can quickly solve the problem of pipe blockage, ensure that the drainage tube is unobstructed for a long time, and avoid secondary risks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the construction process of the present invention; Figure 3 This is a schematic diagram of the sleeve installation; Among them, 1. negative pressure pump; 2. water storage tank; 3. drain pipe; 4. flushing device; 5. mud collection device; 6. level gauge; 7. negative pressure valve; 8. drain valve; 9. mud collection valve; 10. flushing valve; 11. diversion valve; 12. hydraulic fracturing pump station; 13. ultra-long borehole; 14. fault; 15. connecting area; 16. goaf; 17. casing; 18. filter screen; 19. diversion pipe; 20. ultimate water level line; 21. aquifer. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Those skilled in the art will understand that the term "comprising" as used in this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 3 As shown, an embodiment of the present invention provides a mining water diversion and scour prevention device, comprising: Water storage tank 2 is located within goaf area 16; The negative pressure mechanism is connected to the water storage tank 2, and the connection point is near the top of the water storage tank 2; The diversion pipe 19 has one end connected to the water storage tank 2, and the other end passes through the stratum and connects to the fault 14 and the aquifer 21 in the connecting area 15. The drain pipe 3 is connected at one end to the water storage tank 2, with the connection point near the bottom of the water storage tank 2, and at the other end to the mine drainage system. The negative pressure mechanism is used to draw the water storage tank 2 to negative pressure and guide the water from the connected area 15 into the water storage tank 2 through the diversion pipe 19. The drain pipe 3 is used to guide the water into the mine drainage system. The mine drainage system is the drainage mechanism set up during the mining process, which can discharge water to a safe area. The specific structure of the system belongs to the prior art and will not be described here.

[0023] In this embodiment, the negative pressure mechanism includes: The negative pressure pump 1 is connected to the water storage tank 2 via a vacuum pipe, and a negative pressure valve 7 is installed on the vacuum pipe. By opening the negative pressure valve 7 and the negative pressure pump 1, a stable negative pressure environment can be formed inside the water storage tank 2, providing the necessary conditions for drainage.

[0024] In this embodiment, the drain pipe 3 is connected to the water storage tank 2 via a connecting pipe, and a drain valve 8 is installed on the connecting pipe.

[0025] In this embodiment, a drainage valve 11 is provided on the drainage tube 19, and a sleeve 17 is provided outside the drainage tube 19.

[0026] In this embodiment, it also includes: The flushing device 4 is connected to the drainage pipe 19 through a flushing pipe. A high-pressure pump and a flushing valve 10 are installed on the flushing pipe. The flushing device 4 is filled with water or cleaning solution, and the water or cleaning solution is pumped to the drainage pipe 19 by the high-pressure pump.

[0027] In this embodiment, it also includes: The mud collection device 5 is connected to the bottom of the water storage tank 2 through a collection pipe, and a mud collection valve 9 is installed on the collection pipe.

[0028] In this embodiment, a level gauge 6 is installed near the top of the water storage tank 2, and the level gauge 6 is located at the limit water level line 20 of the water storage tank 2. When the water in the water storage tank 2 reaches the limit water level line 20, the drain valve 11 should be closed and the drain valve 8 should be opened to drain the water.

[0029] In this embodiment, a filter screen 18 is provided at the other end of the drainage pipe 19. The filter screen 18 is used to block mud, sand and stones.

[0030] The specific work process is as follows: Open the diversion valve 11 and start the negative pressure pump 1 to divert the water in the connected area 15 to the water storage tank 2. During the diversion process, the flushing valve 10 is kept closed. When the water in the water storage tank 2 reaches the limit water level line 20, close the diversion valve 11 and the negative pressure pump 1, open the drain valve 8, and introduce the water in the water storage tank 2 into the mine drainage system through the drain pipe 3.

[0031] When the drainage pipe 19 becomes blocked, open the flushing valve 10 and pump water or cleaning solution to the drainage pipe 19 using a high-pressure pump to flush or dissolve the blockage, thereby restoring the drainage pipe 19 to its original state. After flushing, close the flushing valve 10, and the sludge from the blockage will be carried into the water storage tank 2. Open the sludge collection valve 9 to discharge the deposited sludge into the sludge collection device 5.

[0032] This invention also provides a construction method for a mine excavation and drainage water control and scour prevention device, used for constructing such a device, comprising the following steps: S1: Drill an ultra-long borehole 13 from the goaf 16 at a preset dip angle. The ultra-long borehole 13 penetrates the strata, with one end connected to the goaf 16 and the other end connected to the connected area 15. S2: A sealing device is lowered into the ultra-long borehole 13. The sealing device fits tightly against the inner wall of the ultra-long borehole 13, forming a fracturing chamber inside the ultra-long borehole 13. A hydraulic fracturing pump station 12 is arranged in the goaf 16. High-pressure water is injected into the fracturing chamber through the hydraulic fracturing pump station 12 to hydraulically fracture the connected area 15, causing the original fractures in the connected area 15 to expand and form drainage fractures. Compared with the original fractures, the width of the drainage fractures is greatly increased, which can smoothly drain the water. During the fracturing process, pressure changes and water flow changes should be monitored in real time to avoid overpressure leading to rock mass damage. Pressure monitoring and water flow detection can be carried out using a pressure gauge and a flow meter. S3: After hydraulic fracturing is completed, release the fracturing pressure and retrieve the sealing device. Lower the casing 17 into the ultra-long borehole 13. The function of the casing 17 is to protect the drainage pipe 19. Lower the drainage pipe 19 into the casing 17 so that one end of the drainage pipe 19 is connected to the water storage tank 2 and the other end is connected to the connecting area 15.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mining water diversion and erosion prevention device, characterized in that, include: Water storage tank (2) is located in the goaf area (16); The negative pressure mechanism is connected to the water storage tank (2), and the connection point is close to the top of the water storage tank (2); The diversion pipe (19) is connected at one end to the water storage tank (2) and at the other end through the strata and connected to the fault (14) and the aquifer (21) in the connected area (15); The drain pipe (3) is connected at one end to the water storage tank (2), with the connection point close to the bottom of the water storage tank (2), and at the other end to the mine drainage system; the negative pressure mechanism is used to draw the water storage tank (2) to negative pressure and guide the water in the connected area (15) into the water storage tank (2) through the diversion pipe (19), and the drain pipe (3) is used to guide the water into the mine drainage system.

2. The mining water diversion and erosion prevention device according to claim 1, characterized in that, The negative pressure mechanism includes: The negative pressure pump (1) is connected to the water storage tank (2) through a vacuum pipe, and a negative pressure valve (7) is installed on the vacuum pipe.

3. A mining water diversion and erosion prevention device according to claim 1, characterized in that, The drain pipe (3) is connected to the water storage tank (2) through a connecting pipe, and a drain valve (8) is provided on the connecting pipe.

4. A mining water diversion and erosion prevention device according to claim 1, characterized in that, A drainage valve (11) is provided on the drainage pipe (19), and a sleeve (17) is provided outside the drainage pipe (19).

5. A mining water diversion and erosion prevention device according to claim 1, characterized in that, Also includes: The flushing device (4) is connected to the drainage pipe (19) through the flushing pipe. The flushing pipe is equipped with a high-pressure pump and a flushing valve (10). The flushing device (4) is filled with water or cleaning solution, and the water or cleaning solution is pumped to the drainage pipe (19) through the high-pressure pump.

6. A mining water diversion and erosion prevention device according to claim 5, characterized in that, Also includes: The mud collection device (5) is connected to the bottom of the water storage tank (2) through a collection pipe, and a mud collection valve (9) is provided on the collection pipe.

7. A mining water diversion and erosion prevention device according to claim 1, characterized in that, The water storage tank (2) is equipped with a level gauge (6) near its top, and the level gauge (6) is located at the limit water level line (20) of the water storage tank (2).

8. A mining water diversion and erosion prevention device according to claim 1, characterized in that, A filter screen (18) is provided at the other end of the drainage tube (19).

9. A construction method for a mine excavation diversion and water control anti-scour device, used for constructing the mine excavation diversion and water control anti-scour device as described in claim 1, comprising the following steps: S1: Construct an ultra-long borehole (13) from the goaf (16) at a preset angle. One end of the ultra-long borehole (13) is connected to the goaf (16), and the other end is connected to the connected area (15). S2: A sealing device is lowered into the ultra-long borehole (13). The sealing device forms a fracturing chamber in the ultra-long borehole (13). A hydraulic fracturing pump station (12) is arranged in the goaf (16). High-pressure water is injected into the fracturing chamber through the hydraulic fracturing pump station (12) to perform hydraulic fracturing on the connected area (15), so that the original fractures in the connected area (15) expand to form drainage fractures. S3: After hydraulic fracturing is completed, release the fracturing pressure and retrieve the sealing device. Lower the casing (17) into the ultra-long borehole (13), and lower the drainage pipe (19) into the casing (17) so that one end of the drainage pipe (19) is connected to the water storage tank (2) and the other end is connected to the connecting area (15).

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