Anti-blocking rapid dehydration device for goaf filling

Abstract

The utility model provides an anti-blocking rapid dehydration device for goaf filling, and belongs to the technical field of mine filling. The device comprises a dewatering pipe, a water supply pipe, a drainage pipe and a three-way pipe, the three-way pipe comprises a first pipeline, a second pipeline and a third pipeline which are communicated with one another; the dewatering pipe is arranged in the goaf, and the bottom end and the top end of the dewatering pipe are located at the bottom and the top of the goaf respectively; the bottom end of the dewatering pipe is connected with the first pipeline; the water outlet end of the water supply pipe is communicated with a second pipeline, and a first valve is arranged in the second pipeline; the water inlet end of the drainage pipe is communicated with a third pipeline, and a second valve is arranged in the third pipeline. The three-way pipe is arranged to communicate with the dewatering pipe, the water supply pipe and the drainage pipe, the corresponding valves are arranged in the pipelines communicating the water supply pipe and the drainage pipe, drainage and flushing operation can be alternately conducted by adjusting opening and closing of the corresponding valves, and therefore the dewatering pipe is effectively prevented from being blocked, and the drainage efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine filling, in particular to a rapid dewatering device for preventing blockage in goaf filling. BACKGROUND

[0002] After the filling mine is mined, the goaf needs to be filled. Before filling, the filling pipe needs to be cleaned with clean water. After filling, the filling pipeline also needs to be cleaned to prevent the filling pipe from being blocked by the residual filling slurry after solidification. Moreover, since the filling slurry is a slurry, a large amount of water will be separated out after a period of natural sedimentation and solidification. After the goaf is filled, there will be clear water in the upper part of the goaf, which will greatly reduce the strength of the filling body, prolong the solidification time and limit the production replacement of the goaf. Therefore, dewatering is needed during the whole process of goaf filling and solidification.

[0003] At present, the common dewatering method for filling slurry solidification process is to hang multiple dewatering pipes in the stope for water filtration. In theory, the filling slurry will not seep out of the filling dewatering pipe, but after a long period of use, fine particles of the filling slurry will seep in, and the dewatering pipe will be blocked by solidification after a long period of time, affecting drainage. When the dewatering pipe is blocked, the water in the goaf will accumulate and increase every day, and each filling is equivalent to injecting filling slurry into water. The high concentration will be diluted, which seriously affects the filling quality. Especially when the filling reaches a certain height, the dewatering pipe will be blocked by the seepage of the filling slurry after a certain period of service, resulting in scrap, which causes the upper part to be filled without timely dewatering and drainage.

[0004] Therefore, it is necessary to design a rapid dewatering device for preventing blockage in goaf filling. SUMMARY

[0005] In view of the technical problems in the background art, the present application provides a rapid dewatering device for preventing blockage in goaf filling, which can effectively prevent the dewatering pipe from being blocked and greatly improve the drainage efficiency.

[0006] The embodiment of the present application provides a rapid dewatering device for preventing blockage in goaf filling, which comprises a dewatering pipe, a water supply pipe, a drainage pipe and a tee pipe.

[0007] The tee pipe comprises a first pipe, a second pipe and a third pipe which are in communication with each other.

[0008] The dewatering pipe is arranged in the goaf, and the bottom end and the top end of the dewatering pipe are located at the bottom and the top of the goaf, respectively. The bottom end of the dewatering pipe is connected with the first pipe.

[0009] The water outlet end of the water supply pipe is communicated with the second pipeline, and the first valve is arranged in the second pipeline.

[0010] The water inlet end of the drainage pipe is communicated with the third pipeline, and the second valve is arranged in the third pipeline.

[0011] In the technical scheme of the embodiment, the three-way pipe is arranged to communicate the dehydration pipe, the water supply pipe and the drainage pipe, and the first valve and the second valve are arranged in the pipelines communicating the water supply pipe and the drainage pipe, so that the water in the dehydration pipe is continuously discharged through the drainage pipe by opening the second valve, so as to timely discharge the water on the surface of the filling body and reduce the dehydration time of the goaf; after the water is discharged for a period of time, the first valve can be opened to flush water into the dehydration pipe through the water supply pipe, so as to disperse the particulate matters such as silt and tailings deposited in the dehydration pipe, so that the dehydration pipe is kept unblocked to avoid blockage. Under the circulation of continuous water discharge and water flushing, the blockage of the dehydration pipe can be effectively avoided, the water discharge efficiency is greatly improved, and then the replacement speed of the goaf is increased and the filling quality is improved.

[0012] In some embodiments, a plurality of openings are arranged on the side wall of the dehydration pipe, and a filter structure is arranged at the openings.

[0013] In the embodiment, the filter structure can achieve the effect of water permeability and sand impermeability. In this way, the clear water generated on the surface of the filling body in the goaf due to water bleeding can penetrate into the dehydration pipe through the filter structure, and the particulate matters such as silt and tailings are blocked outside the dehydration pipe.

[0014] In some embodiments, the top end of the dehydration pipe is suspended on the top of the goaf through a fixing device.

[0015] In the embodiment, the fixing device can be used to fix the top end of the dehydration pipe.

[0016] In some embodiments, the fixing device includes an anchor rod connected to the top of the goaf and a wire used to connect the dehydration pipe and the anchor rod.

[0017] In the embodiment, the anchor rod and the wire are used to fix the dehydration pipe, so that the dehydration pipe can be suspended on the top of the goaf.

[0018] In some embodiments, filling retaining walls are arranged on both sides of the bottom of the goaf, and the three-way pipe is located outside the filling retaining walls; the bottom end of the dehydration pipe penetrates through one side of the filling retaining wall and is connected to the first pipeline.

[0019] In the embodiment, the water separated in the goaf inside the filling retaining wall penetrates into the dehydration pipe and then flows to the outside of the filling retaining wall and is discharged through the drainage pipe communicated with the three-way pipe, so that the discharged water does not re-enter the goaf.

[0020] In some embodiments, a sealing structure is arranged between the dewatering pipe and the filling retaining wall.

[0021] In this embodiment, the sealing structure can effectively prevent the filling slurry from seeping out through the gap between the outer wall of the dewatering pipe and the filling retaining wall.

[0022] In some embodiments, the water supply end of the water supply pipe is connected with the water pumping mechanism.

[0023] In this embodiment, the water pumping mechanism can quickly flush water into the dewatering pipe through the water supply pipe, so as to effectively flush the particulate matters such as silt and tailings in the dewatering pipe and prevent them from being blocked.

[0024] In some embodiments, the water discharge end of the water discharge pipe is in communication with the water ditch.

[0025] In this embodiment, the water discharged from the dewatering pipe in the goaf can be discharged to the water ditch through the water discharge pipe.

[0026] In some embodiments, the tee pipe is a right tee pipe; the first pipe and the second pipe are arranged horizontally, and the third pipe is arranged vertically.

[0027] In this embodiment, the vertically arranged third pipe facilitates the quick discharge of the water discharged from the dewatering pipe through the water discharge pipe.

[0028] In some embodiments, the second pipe and the water supply pipe are connected through a joint.

[0029] In this embodiment, the joint facilitates the stable connection of the second pipe and the water supply pipe.

[0030] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented in accordance with the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following will specifically describe the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings used in the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0032] Fig. 1 The structure schematic diagram of the anti-blocking rapid dewatering device for goaf filling provided by the embodiments of the present application is applied to the goaf of a mine;

[0033] Fig. 2 Figure 1 is a schematic view of a connection structure between a tee pipe and other structures in an embodiment of the present application.

[0034] Reference signs: 1, dewatering pipe; 2, water supply pipe; 21, joint; 3, drainage pipe; 4, tee pipe; 41, first valve; 42, second valve; 5, fixing device; 6, filling retaining wall; 7, goaf; 71, filling body; 72, clear water. DETAILED DESCRIPTION

[0035] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0038] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two).

[0040] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0041] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] In the prior art, during the long-term use of the dewatering pipe 1, fine particle slurry will seep into the dewatering pipe 1, gradually clogging the dewatering pipe 1, resulting in that the water filled in the goaf 7 cannot be effectively discharged, affecting the drainage efficiency and the filling quality. In order to solve the above problems caused by the clogging of the dewatering pipe 1, the present application provides a rapid dewatering device for preventing clogging of goaf 7 filling, by setting a three-way pipe 4 respectively communicating the dewatering pipe 1, the water supply pipe 2 and the drainage pipe 3, and respectively setting corresponding valves in the pipeline communicating the water supply pipe 2 and the drainage pipe 3, the opening and closing of the corresponding valves can be adjusted to alternately perform water flushing and drainage operation, thereby effectively avoiding the clogging of the dewatering pipe 1, and greatly improving the drainage efficiency.

[0043] Specifically, please refer to Figs. 1-2 The embodiments of the present application provide a rapid dewatering device for preventing clogging of goaf 7 filling, comprising a dewatering pipe 1, a water supply pipe 2, a drainage pipe 3 and a three-way pipe 4;

[0044] The three-way pipe 4 comprises a first pipeline, a second pipeline and a third pipeline which are communicated with each other;

[0045] The dewatering pipe 1 is arranged inside the goaf 7, and the bottom end and the top end of the dewatering pipe 1 are located at the bottom and the top of the goaf 7 respectively; the bottom end of the dewatering pipe 1 is connected with the first pipeline;

[0046] The water outlet end of the water supply pipe 2 is connected with the second pipeline, and the first valve 41 is arranged in the second pipeline;

[0047] The water inlet end of the drain pipe 3 is communicated with a third pipeline, and the third pipeline is provided with a second valve 42.

[0048] In this way, opening the second valve 42 can make the water in the dewatering pipe 1 continuously drain through the drain pipe 3, so as to timely drain the water on the surface of the filling body 71 and reduce the dewatering time of the goaf 7; after a period of drainage, the first valve 41 can be opened to flush water into the drain pipe 3 through the water supply pipe 2, so as to disperse the particles such as silt and tailings deposited in the dewatering pipe 1 and keep the dewatering pipe 1 unblocked. Under the cyclic action of continuous drainage and water flushing, the dewatering pipe 1 can be effectively prevented from being blocked, the drainage efficiency can be greatly improved, the replacement speed of the goaf 7 can be further increased, and the filling quality can be improved.

[0049] Further, in the embodiment of the present application, the side wall of the dewatering pipe 1 is provided with a plurality of openings, and a filter structure is arranged at the openings. The size and number of the openings can be selected according to the granulation performance (such as particle shape, particle size and dewatering amount) of the prepared filling slurry, so as to achieve efficient drainage; the openings are preferably uniformly distributed on the side wall of the dewatering pipe 1, so as to uniformly remove the water at different positions in the goaf 7. The filter structure is preferably a filter cloth, filter screen or other filter structure, which can ensure that the water can pass through smoothly while blocking the filling particles in the filling slurry, so as to achieve the effect of water permeability and sand impermeability. More specifically, in some embodiments of the present application, the filter structure such as filter cloth and impermeable cloth is wrapped on the outer wall of the water pipe with multiple openings on the side wall, so as to form the dewatering pipe 1 in the present application, or a corrugated filter pipe with the functions of water permeability and sand impermeability can be directly used as the dewatering pipe 1. The dewatering pipe 1 is placed in the goaf 7, and as the filling process proceeds, the clear water 72 generated in the filling process will penetrate the filter structure into the dewatering pipe 1, while the particles such as silt and tailings are blocked outside the dewatering pipe 1, but part of the fine particles will still enter the dewatering pipe 1 during long-term use, which can be effectively prevented from being blocked by flushing through the water supply pipe 2.

[0050] Further, in the embodiment of the present application, the top end of the dewatering pipe 1 is suspended on the top of the goaf 7 through the fixing device 5, and the dewatering pipe 1 does not contact with the top plate of the goaf 7, so as to ensure a higher dewatering effect. Further, in some embodiments of the present application, the fixing device 5 includes an anchor rod connected with the top of the goaf 7 and a wire for connecting the dewatering pipe 1 and the anchor rod, and the dewatering pipe 1 is fixed by the anchor rod and the wire, so as to be stably located in the suspended state on the top of the goaf 7.

[0051] Further, in the embodiment of the present application, the goaf 7 is provided with a filling retaining wall 6 on both sides of the bottom, and the tee pipe 4 is located outside the filling retaining wall 6; the bottom end of the dehydration pipe 1 is connected with the first pipeline through one side of the filling retaining wall 6. In this way, the water in the goaf 7 on the inside of the filling retaining wall 6 will all penetrate into the dehydration pipe 1, and then flow to the outside of the filling retaining wall 6, and be discharged through the drainage pipe 3 in communication with the tee pipe 4, so as to prevent the discharged water from entering the goaf 7 again. In the area where the dehydration pipe 1 penetrates through the filling retaining wall 6, the gap between the outer wall of the dehydration pipe 1 and the filling retaining wall 6 is filled with a sealing structure, so as to prevent the slurry inside the filling retaining wall 6 from seeping out through the gap between the dehydration pipe 1 and the filling retaining wall 6.

[0052] Further, in the embodiment of the present application, the water supply end of the water supply pipe 2 is connected with a water pumping mechanism, so as to provide driving force for water supply, so that the water can quickly flow into the dehydration pipe 1, and effectively wash the particulate matters such as silt and tailings in the dehydration pipe 1, thereby preventing the dehydration pipe 1 from being blocked. More specifically, in some embodiments of the present application, the water supply end of the water supply pipe 2 is in communication with a mine production water pipe, and the water pumping mechanism is preferably an underground water pump station of the mine, which provides pressure for the production water.

[0053] Further, in the embodiment of the present application, the water discharge end of the drainage pipe 3 is in communication with a water ditch, so as to discharge the water in the goaf 7 discharged through the dehydration pipe 1 to the water ditch through the drainage pipe 3.

[0054] Further, in the embodiment of the present application, the tee pipe 4 is a right tee pipe; wherein the first pipeline and the second pipeline are horizontally arranged, and the third pipeline is vertically arranged, so as to make the water discharged from the dehydration pipe 1 quickly flow to the drainage pipe 3 through the vertically arranged third pipeline after entering the tee pipe 4. More preferably, the length of the third pipeline can be as short as possible, so as to prevent the particulate matters from depositing in the third pipeline. Preferably, the length of the third pipeline is within 1 m, which can effectively prevent the third pipeline from being blocked by the particulate matters.

[0055] Further, in the embodiment of the present application, the second pipeline is connected with the water supply pipe 2 through a joint 21, so as to improve the stability of the connection.

[0056] The use method of the anti-blocking rapid dehydration device for goaf 7 filling provided by the present application will be described below.

[0057] When the anti-blocking rapid dehydration device for goaf 7 filling provided by the present application is used, the following steps are mainly included:

[0058] S1. When obvious clear water 72 has appeared on the surface of the filling material 71 in the goaf 7, open the second valve 42 to allow the clear water 72 to seep into the dewatering pipe 1, then flow to the bottom of the dewatering pipe 1, and flow into the drainage pipe 3 through the tee pipe 4 for drainage. This process is repeated to continuously drain the water until the obvious clear water 72 is mostly drained. At this point, the drained water is mainly clear water 72, with a small amount of fine particulate matter mixed in later.

[0059] S2. When drainage continues for a certain period of time or when it is observed that there is still a large amount of water on the surface of the filling body 71 but the drainage speed is significantly slower or no water is discharged, close the second valve 42 and open the first valve 41. Water is flushed into the dewatering pipe 1 through the water supply pipe 2. The flushing time can preferably be 1 to 10 minutes to ensure that the mud, tailings and other particles settled in the dewatering pipe 1 are dispersed.

[0060] S3. Close the first valve 41 and open the second valve 42 to drain the water, so that the rinsed water is discharged through the drain pipe 3 to keep the dewatering pipe 1 unobstructed.

[0061] The above flushing and drainage process can be repeated or performed at regular intervals to keep the dewatering pipe 1 unobstructed until the water on the surface of the filling body 71 in the goaf 7 is basically drained, at which point drainage can be stopped.

[0062] In summary, this application provides a rapid dewatering device for preventing blockage during backfilling of a goaf 7, belonging to the field of mine backfilling technology. The device includes a dewatering pipe 1, a water supply pipe 2, a drainage pipe 3, and a three-way pipe 4. The three-way pipe 4 includes a first pipe, a second pipe, and a third pipe that are interconnected. The dewatering pipe 1 is located inside the goaf 7, with its bottom and top ends located at the bottom and top of the goaf 7, respectively. The bottom end of the dewatering pipe 1 is connected to the first pipe. The outlet end of the water supply pipe 2 is connected to the second pipe, which contains a first valve 41. The inlet end of the drainage pipe 3 is connected to the third pipe, which contains a second valve 42. By setting up a three-way pipe 4 to connect the dewatering pipe 1, the water supply pipe 2, and the drainage pipe 3 respectively, and by installing corresponding valves in the pipes connecting the water supply pipe 2 and the drainage pipe 3, drainage and flushing operations can be alternately performed by adjusting the opening and closing of the corresponding valves, thereby effectively preventing blockage of the dewatering pipe 1 and significantly improving drainage efficiency.

[0063] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A clogging-preventing rapid dewatering device for gob filling, characterized by, The device comprises a dehydration pipe, a water supply pipe, a drainage pipe and a tee pipe; The tee pipe comprises a first pipe, a second pipe and a third pipe which are connected with each other; The dehydration pipe is arranged in the goaf, and the bottom end and the top end of the dehydration pipe are located at the bottom and the top of the goaf respectively; The water outlet end of the water supply pipe is connected with the second pipe, and the first valve is arranged in the second pipe; The water inlet end of the drainage pipe is connected with the third pipe, and the second valve is arranged in the third pipe.

2. The clogging-preventing rapid dewatering device for gob filling according to claim 1, characterized by, A plurality of openings are arranged on the side wall of the dehydration pipe, and the openings are provided with filter structures.

3. The clogging-preventing rapid dewatering device for gob filling according to claim 1, characterized by, The top end of the dehydration pipe is hung on the top of the goaf through a fixing device.

4. The clogging-preventing rapid dewatering device for gob filling according to claim 3, characterized by The fixing device comprises an anchor rod connected with the top of the goaf and a wire used for connecting the dehydration pipe and the anchor rod.

5. The clogging prevention rapid dewatering device for gob filling according to claim 1, characterized by, The goaf is provided with filling retaining walls on both sides of the bottom, and the tee pipe is located outside the filling retaining walls; the bottom end of the dehydration pipe is connected with the first pipe through one side of the filling retaining wall.

6. The clogging-preventing rapid dewatering device for gob filling according to claim 5, characterized by A sealing structure is arranged between the dehydration pipe and the filling retaining wall.

7. The clogging prevention rapid dewatering device for gob filling according to claim 1, characterized by, The water supply end of the water supply pipe is connected with a water pumping mechanism.

8. The clogging prevention rapid dewatering device for gob filling according to claim 1, characterized by, The drainage end of the drainage pipe is connected with a water ditch.

9. The clogging prevention rapid dewatering device for gob filling according to claim 1, characterized by, The tee pipe is a right tee pipe; the first pipe and the second pipe are arranged horizontally, and the third pipe is arranged vertically.

10. The clogging prevention rapid dewatering device for gob filling according to claim 1, characterized by, The second pipe and the water supply pipe are connected through a joint.

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