Mining drilling paste filling system

Abstract

The embodiment of the utility model discloses a mine drilling paste filling system, relates to the technical field of mine filling slurry pipeline conveying, and aims to solve the problem that a filling system is seriously abraded. The mine drilling paste filling system comprises a ground filling pipe, a drilling filling pipe, a regulating valve and an under-hole filling pipe. The ground filling pipe is used for being connected with a ground filling station for storing filling slurry; the drill hole filling pipe is located between the ground filling pipe and the under-hole filling pipe. The adjusting valve is arranged between the bottom end of the drill hole filling pipe and the drill hole bottom filling pipe, and the adjusting valve is used for adjusting the size of the pipe diameter sectional area. The utility model is suitable for the condition that the filling system is used for conveying the filling slurry.

Description

Technical Field

[0001] The utility model relates to the technical field of mine filling slurry pipeline transportation, in particular to a mine drilling paste filling system. Background Art

[0002] Mining will produce goaf and tailings ponds during mining. Goafs can cause deformation of surrounding rocks underground, causing ground subsidence and damage to buildings and roads on the surface. Solid waste in tailings ponds accumulates on the surface, occupying arable land and polluting groundwater.

[0003] Generally, in the mining process, at least a mining method of filling the goaf with filling slurry is used to support the rock layer. At present, most of the filling slurry is transported by filling drilling. However, during the transportation process, there is a problem that the filling slurry cannot be fully transported in the filling system, resulting in serious wear of the filling system. Summary of the invention

[0004] In view of this, an embodiment of the utility model provides a mining borehole paste filling system, which can reduce the wear on the filling pipe.

[0005] One embodiment of the utility model provides a mining borehole paste filling system, comprising: a ground filling pipe, a borehole filling pipe, a regulating valve and an under-hole filling pipe; the ground filling pipe is used to be connected to a ground filling station for storing filling slurry; the borehole filling pipe is located between the ground filling pipe and the under-hole filling pipe; the regulating valve is arranged between the bottom end of the borehole filling pipe and the filling pipe at the bottom of the borehole, and the regulating valve is used to adjust the size of the pipe diameter cross-sectional area.

[0006] According to a specific implementation of the utility model, it also includes a first bent pipe and an exhaust valve; one end of the first bent pipe is connected to the ground filling pipe, and the other end is connected to the borehole filling pipe; the exhaust valve is connected to the first bent pipe, and is used to discharge the air at the upper end of the borehole filling pipe during the process of conveying filling slurry.

[0007] According to a specific implementation method of the utility model, the downhole filling pipe is provided with a stop valve and a normally closed slurry discharge valve, the normally closed slurry discharge valve is located on the side of the stop valve close to the borehole filling pipe and is connected with the downhole filling pipe; the stop valve is used to cut off the downhole filling pipe; when the pressure in the mining borehole paste filling system reaches a preset pressure threshold, the normally closed slurry discharge valve automatically opens.

[0008] According to a specific implementation of the utility model, the ground filling pipe is provided with at least one three-way joint, the inlet of the three-way joint is connected to the slurry filling pipe of the ground filling station, an outlet is connected to the ground filling pipe, and the other outlet is provided with a removable sealing plate.

[0009] According to a specific implementation of the utility model, it also includes the buffer elbow assembly, one end of which is connected to the borehole filling pipe, and the other end is connected to the bottom hole filling pipe; the regulating valve is arranged between the buffer elbow assembly and the borehole bottom filling pipe.

[0010] According to a specific implementation of the utility model, the buffer elbow assembly includes a second bend pipe and a support seat, the second bend pipe is arranged on the support seat, one end of the second bend pipe is connected to the drilling filling pipe, and the other end is connected to the downhole filling pipe.

[0011] According to a specific implementation method of the utility model, one end of the second bend pipe is connected to the drilling filling pipe through a first flange; the support seat includes: a first support part, the first support part includes a herringbone support member and a fixed seat, one end of the herringbone support member is supported on the bottom surface of the first flange and the other end is connected to the fixed seat; a second support part, the top of the second support part is supported on the bottom of the second bend pipe, and the bottom is connected to the fixed seat.

[0012] According to a specific implementation of the utility model, a detachable second flange is provided on the bottom side of the buffer elbow assembly relative to the drilling filling pipe.

[0013] The mining borehole paste filling system provided by the embodiment of the utility model has a ground filling pipe that can be connected to a ground filling station for storing filling slurry. The borehole filling pipe connects the ground filling pipe with the downhole filling pipe. A regulating valve is arranged between the bottom end of the borehole filling pipe and the downhole filling pipe. The regulating valve adjusts the size of the cross-sectional area of ​​its pipe diameter, thereby controlling the flow size of the paste filling slurry through the regulating valve pipeline, so that the slurry in the borehole filling pipe is fully transported, thereby reducing the wear on the filling pipeline of the filling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of an implementation method of a mining borehole paste filling system of the utility model. DETAILED DESCRIPTION

[0016] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0017] It should be clear that the described implementations are only part of the implementations of the utility model, not all of the implementations. Based on the implementations in the utility model, all other implementations obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0018] In the drilling and filling paste filling slurry method, pipeline transportation is generally used. The theory used in pipeline transportation is the basis for the design and optimization of the filling pipeline system. At present, relevant theories of solid-liquid two-phase flow are mostly used in pipeline transportation. This theory mainly considers the flow characteristics of low-concentration two-phase flow, focusing on the properties of single particle sedimentation and suspension, and the conclusions drawn from it are often very different from the actual situation. Under this condition, the rationality of pipeline layout is inevitably affected, which increases the difficulty of management and maintenance of the transportation system and increases the probability of pipeline failure. At the same time, due to the differences in filling materials, the conclusions are not universal, which leads to uncertainty in the pipeline design process and affects the safe and stable operation of the pipeline transportation system.

[0019] The embodiment of the utility model provides a mining borehole paste filling system, which can fully transport the filling paste in the pipe, thereby reducing the wear on the filling pipe of the filling system.

[0020] The following combination Figure 1 , the implementation mode of the utility model is further explained.

[0021] Figure 1 The schematic diagram of the structure of the utility model mining drilling paste filling system is shown in FIG. Figure 1 As shown, the mining borehole paste filling system of this embodiment may include a ground filling pipe 1, a borehole filling pipe 2, a regulating valve 3 and a downhole filling pipe 4.

[0022] The ground filling pipe 1 is used to be connected to a ground filling station storing filling slurry; for example, the ground filling station may be provided with a slurry filling pipe, and the slurry filling pipe is connected to the ground filling pipe. An industrial pump is provided between the ground filling station and the slurry filling pipe, so that the paste filling slurry in the ground filling station can be transported to the ground filling pipe through the slurry filling pipe by the industrial pump.

[0023] The borehole filling pipe 2 is located between the ground filling pipe 1 and the downhole filling pipe 4 .

[0024] A regulating valve 3 is arranged between the bottom end of the borehole filling pipe 2 and the filling pipe at the bottom of the borehole, and the regulating valve 3 is used to adjust the size of the pipe diameter cross-sectional area.

[0025] Exemplarily, the feed valve port of the regulating valve 3 is connected to the bottom end of the borehole filling pipe 2, and the discharge valve port of the regulating valve 3 is connected to the filling pipe at the bottom of the borehole. A valve can be set in the valve body of the regulating valve 3, and the valve can be used to adjust the size of the cross-sectional area of ​​the pipe diameter of the regulating valve 3.

[0026] The mining borehole paste filling system provided by the embodiment of the utility model has a ground filling pipe 1 that can be connected to a ground filling station for storing filling slurry, and the borehole filling pipe 2 connects the ground filling pipe 1 with the downhole filling pipe 4. A regulating valve 3 is arranged between the bottom end of the borehole filling pipe 2 and the downhole filling pipe 4. The regulating valve 3 adjusts the size of its pipe diameter cross-sectional area, thereby controlling the flow size of the paste filling slurry through the pipeline of the regulating valve 3, so that the slurry in the borehole filling pipe 2 is fully transported, thereby reducing the wear on the filling pipeline of the filling system and increasing the service life of the filling riser.

[0027] In addition, the paste filling slurry contains aggregate particles and is a non-homogeneous fluid. The mining drilling paste filling system provided by the embodiment of the utility model can reduce the flow rate of the paste filling slurry by conveying the slurry in a full pipe, thereby slowing down the movement of aggregate particles and ensuring that the paste filling slurry moves at a relatively uniform flow rate.

[0028] When the mining borehole paste filling system is filled with paste slurry, the filling slurry enters the borehole filling pipe 2 from the ground filling pipe 1 and falls freely. Under the action of gravity, the falling speed of the filling slurry becomes faster and faster, and an air section is generated at the upper end of the borehole filling pipe 2, resulting in the filling slurry being unable to be fully transported in the borehole filling pipe 2, accelerating the wear of the borehole filling pipe 2 and shortening the service life of the filling riser.

[0029] To solve this problem, in some embodiments, the mining borehole paste filling system further includes a first elbow 5 and an exhaust valve 6; one end of the first elbow 5 is connected to the ground filling pipe 1, and the other end is connected to the borehole filling pipe 2; the exhaust valve 6 is connected to the first elbow 5, and is used to discharge the air at the upper end of the borehole filling pipe 2 during the process of conveying the filling slurry. In this way, the air section at the upper end of the borehole filling pipe 2 can be eliminated, so that the borehole filling pipe 2 can fully convey the filling slurry.

[0030] Exemplarily, the exhaust valve 6 may include an air sensor, a controller, and an electric valve. The air sensor and the electric valve are electrically connected to the controller, respectively. The air sensor is used to transmit a feedback signal to the controller to determine whether there is an air segment at the upper end of the borehole filling pipe 2. If there is an air segment at the upper end of the borehole filling pipe 2, the controller sends a feedback signal to the electric valve to open the electric valve to connect the borehole filling pipe 2 to the atmosphere. In this way, as the filling slurry accumulates in the borehole filling pipe 2, the air in the borehole filling pipe 2 can be discharged into the atmosphere, and after the air in the borehole filling pipe 2 is exhausted, the controller sends a feedback signal to the electric valve to control the electric valve to close.

[0031] In order to facilitate cleaning personnel to clean the paste filling slurry blocked in the borehole filling pipe 2 and the downhole filling pipe 4, in some embodiments, the downhole filling pipe 4 is provided with a stop valve 7 and a normally closed slurry discharge valve 8. The normally closed slurry discharge valve 8 is located on the side of the stop valve 7 close to the borehole filling pipe 2 and is connected to the downhole filling pipe 4; the stop valve 7 is used to cut off the downhole filling pipe 4; when the pressure in the mining borehole paste filling system reaches a preset pressure threshold, the normally closed slurry discharge valve 8 automatically opens.

[0032] In this way, when the borehole filling pipe 2 and the downhole filling pipe 4 are blocked, the stop valve 7 can be controlled to cut off the filling slurry transmitted through the downhole filling pipe 4. In this way, as the filling slurry in the mining borehole paste filling system increases, the pressure of the part of the mining borehole paste filling system located between the stop valve 7 and the ground filling station becomes larger and larger. After its pressure reaches the preset pressure threshold of the normally closed slurry discharge valve 8, the normally closed slurry discharge valve 8 can be automatically opened to discharge the filling slurry blocked in the borehole filling pipe 2 and the downhole filling pipe 4 from the valve port of the normally closed slurry discharge valve 8, thereby preventing the filling pipeline at the rear end from being blocked.

[0033] The ground filling pipe 1 between the ground filling station and the borehole is generally long. In order to facilitate the cleaning personnel to clean the filling slurry blocked in the ground filling pipe 1, in some embodiments, the ground filling pipe 1 is provided with at least one three-way joint 9, the inlet of the three-way joint 9 is connected to the slurry filling pipe of the ground filling station, one outlet is connected to the ground filling pipe 1, and the other outlet is provided with a removable sealing plate. In this way, when the ground filling pipe 1 is blocked, the removable sealing plate can be removed to facilitate the discharge of the filling slurry blocked in the ground filling pipe 1 from the outlet, thereby preventing the underground filling pipeline of the mining borehole paste filling system from being blocked.

[0034] After the filling slurry enters the borehole filling pipe 2 from the ground filling pipe 1, it has a high energy after free falling. In order to prevent the free-falling filling slurry from damaging the filling pipe 4 under the hole, in some embodiments, the mining borehole paste filling system also includes a buffer elbow assembly 10, one end of the buffer elbow assembly 10 is connected to the borehole filling pipe 2, and the other end is connected to the filling pipe 4 under the hole; the regulating valve 3 is arranged between the buffer elbow assembly 10 and the filling pipe at the bottom of the borehole. In this way, when the filling slurry enters the elbow assembly, its flow direction changes, and the kinetic energy of the filling slurry can be converted into potential energy, thereby reducing the speed of the filling slurry, buffering the filling slurry, thereby reducing the wear on the filling pipeline of the filling system and increasing the service life of the filling riser.

[0035] In order to prevent the buffer elbow assembly 10 from deforming under the impact of the filling slurry, in some embodiments, the buffer elbow assembly 10 includes a second elbow 11 and a support seat 12, and the second elbow 11 is arranged on the support seat 12, and one end of the second elbow 11 is connected to the drilling filling pipe 2, and the other end is connected to the downhole filling pipe 4. In this way, when the second elbow 11 is subjected to the impact of the filling slurry, the impact energy of the filling slurry can be transferred to the support seat 12, thereby reducing the impact of the filling slurry on the buffer elbow assembly 10.

[0036] Specifically, in some embodiments, one end of the second curved pipe 11 is connected to the borehole filling pipe 2 via a first flange; this makes it easy to replace the second curved pipe 11 .

[0037] In some embodiments, the support seat 12 includes: a first support portion 121, the first support portion 121 includes a herringbone support member 1211 and a fixing seat 1212, the top end of the herringbone support member 1211 is supported on the bottom surface of the first flange, and the other end is connected to the fixing seat 1212; this can prevent the connection between the second elbow 11 and the drilling filling pipe 2 from failing under the impact of the filling slurry. In addition, the bottom of the herringbone support member 1211 is triangular, has good stability, and can provide good support.

[0038] The fixing base 1212 can be fixed to the ground below the hole by a grounding solder.

[0039] In one embodiment, the second bend pipe 11 and the drilling filling pipe 2 are integrally formed, and a flange body is provided at the turning point of the drilling filling pipe 2 and the second bend pipe 11. The top end of the herringbone support member 1211 is supported on the bottom surface of the flange body, so as to prevent the turning point of the drilling filling pipe 2 and the second bend pipe 11 from being damaged by the impact of the filling slurry.

[0040] In some embodiments, the support seat 12 further includes a second support portion 122, the top of which is supported on the bottom of the second elbow 11, and the bottom is connected to the fixing seat 1212. In this way, when the second elbow 11 is impacted by the filling slurry, the impact energy of the filling slurry can be transferred to the second support portion 122, thereby reducing the impact of the filling slurry on the second elbow 11.

[0041] In one embodiment, the bottom end of the short side of the herringbone support member 1211 is connected to the second support portion to enhance the stability of the second support portion.

[0042] In some embodiments, a removable second flange 13 is provided at the bottom side of the buffer elbow assembly 10 relative to the borehole filling pipe 2. In this way, after the second flange 13 is removed, the paste filling slurry blocked in the borehole filling pipe 2 can be mechanically cleaned.

[0043] For example, the mining borehole paste filling system may cause the borehole filling pipe 2 to have solidified paste filling slurry due to the intermittent filling of the paste filling slurry. In this case, the second flange 13 can be removed to facilitate clearing of the solidified paste filling slurry.

[0044] In one embodiment, a vertical dredging pipe 14 connected to the fixing seat 1212 is provided at the bottom end of the buffer elbow assembly 10 , and the second flange 13 is arranged on the side of the vertical dredging pipe 14 .

[0045] The mining borehole paste filling system provided by the embodiment of the utility model can transport paste filling slurry in a full pipe transportation mode, reduce the impact wear of the slurry on the local standpipe, and buffer the paste filling slurry in the borehole filling pipe 2 by setting a buffer elbow assembly 10 at the bottom end of the borehole filling pipe 2, thereby extending the service life of the filling pipe of the mining borehole paste filling system. In addition, the mining borehole paste filling system provided by the embodiment of the utility model can facilitate the dredging and cleaning of the filling slurry blocked in the filling pipe by setting a stop valve 7, a normally closed slurry discharge valve 8 and a three-way joint 9.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Each embodiment in this specification is described in a related manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0048] For the convenience of description, the above devices are described by functions divided into various devices / devices. Of course, when implementing the present invention, the functions of each device / device can be implemented in the same or multiple software and / or hardware.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A mining borehole paste filling system, characterized in that: include: Ground filling pipes, borehole filling pipes, regulating valves and downhole filling pipes; The ground filling pipe is used to be connected to a ground filling station storing filling slurry; the borehole filling pipe is located between the ground filling pipe and the downhole filling pipe; The regulating valve is arranged between the bottom end of the borehole filling pipe and the borehole bottom filling pipe, and the regulating valve is used to adjust the size of the pipe diameter cross-sectional area.

2. The mining borehole paste filling system according to claim 1, characterized in that: It also includes a first elbow and an exhaust valve; one end of the first elbow is connected to the ground filling pipe, and the other end is connected to the borehole filling pipe; the exhaust valve is connected to the first elbow and is used to discharge the air at the upper end of the borehole filling pipe during the process of conveying filling slurry.

3. The mining borehole paste filling system according to claim 1 or 2, characterized in that: The downhole filling pipe is provided with a stop valve and a normally closed slurry discharge valve, wherein the normally closed slurry discharge valve is located on a side of the stop valve close to the borehole filling pipe and is connected to the downhole filling pipe; The stop valve is used to cut off the filling pipe under the hole; When the pressure in the mining borehole paste filling system reaches a preset pressure threshold, the normally closed slurry discharge valve automatically opens.

4. The mining borehole paste filling system according to claim 3, characterized in that: The ground filling pipe is provided with at least one three-way joint, the inlet of the three-way joint is connected to the slurry filling pipe of the ground filling station, an outlet is connected to the ground filling pipe, and the other outlet is provided with a detachable sealing plate.

5. The mining borehole paste filling system according to claim 1, characterized in that: It also includes a buffer elbow assembly, one end of which is connected to the borehole filling pipe, and the other end of which is connected to the downhole filling pipe; The regulating valve is arranged between the buffer elbow assembly and the bottom filling pipe of the borehole.

6. The mining borehole paste filling system according to claim 5, characterized in that: The buffer elbow assembly includes a second elbow and a support seat. The second elbow is arranged on the support seat. One end of the second elbow is connected to the drilling filling pipe, and the other end is connected to the downhole filling pipe.

7. The mining borehole paste filling system according to claim 6, characterized in that: One end of the second elbow is connected to the borehole filling pipe via a first flange; The support base comprises: A first supporting portion, the first supporting portion comprising a herringbone-shaped supporting member and a fixing seat, one end of the herringbone-shaped supporting member is supported on the bottom surface of the first flange and the other end is connected to the fixing seat; The second supporting part has a top supported on the bottom of the second curved pipe, and a bottom connected to the fixing seat.

8. The mining borehole paste filling system according to claim 6, characterized in that: A detachable second flange is provided on the bottom end side of the buffer elbow assembly relative to the borehole filling pipe.

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