Mine or pit backfilling pipeline and system

Abstract

The invention belongs to the technical field of mine filling, and particularly relates to a mine or pit backfilling pipeline which comprises a horizontal conveying pipeline and a plurality of pipeline supports, the horizontal conveying pipeline comprises a plurality of pipe joints, the pipe joints are connected into a whole through flanges, and pipe joint connecting pieces are arranged at the two ends of the horizontal conveying pipeline. The pipe joint connecting piece is used for connecting the section of horizontal conveying pipeline with an upstream pipeline and a downstream pipeline; the pipeline support comprises an inclined bearing beam, the inclined bearing beam is provided with at least two pipeline bearing positions, and the pipeline bearing positions are provided with downward concave arc sections matched with the periphery of a pipeline. And the pipe joint is supported on the lower concave arc section. The horizontal conveying pipeline is erected on the pipeline bearing position located at the top, when materials are conveyed, after the inner wall below the pipeline is abraded, the pipeline is pushed into the next-stage pipeline bearing position, the position of the unabraded inner wall above the original pipeline is changed into the inner wall below the pipeline, the service life of the pipeline is prolonged, and resource waste caused by pipeline replacement is avoided.

Description

Technical Field

[0001] The invention relates to a mine or pit backfill pipeline and system, belonging to the technical field of mine filling. Background Art

[0002] Mine or pit backfill refers to a series of processes such as backfilling, sealing and repairing the mined-out areas of mines formed after the exploitation of mineral resources. In the early days, mine backfilling was carried out by using explosion-proof electric locomotives to pull mine cars on rails for transportation: first, ground loading was carried out, and the filling materials were loaded into bucket-shaped mine cars on the ground, and then ground rail transportation, shaft transportation and underground rail transportation were carried out in turn, and finally the materials were unloaded at the work site for use by construction workers. In the process of transporting filling materials by mine cars, there will inevitably be pedestrians or other means of transportation on the track. In order to prevent safety accidents, special personnel must be arranged to be on guard in advance, and several workers are required to participate in the operation at forks, slope points and other places. It is not difficult to see that the entire transportation method requires a lot of people.

[0003] At present, the common way to backfill the mine is the wet backfill method, which uses tailings to prepare special backfill mortar, lays backfill pipelines, and transports the mortar to the area that needs to be filled. In this system, it includes ground stations, transfer stations and filling equipment, among which pipeline transportation is the basic component. The pipeline is divided into inclined sections, vertical sections, etc., among which the inclined section pipeline accounts for the main part of the transportation. Since the mortar contains hard materials such as sand particles, it will cause serious wear on the pipeline. In order to extend the life of the pipeline, underground filling pipelines usually use steel pipes coated with ceramic composite materials or polyurethane and other wear-resistant materials. Since these flowing mortars do not have high pressure and usually flow only in the lower part of the pipeline, the lower part of the pipeline wears faster, which results in the upper part of the pipeline not being fully utilized even if it is retired. Even if air is used to transport sand or mortar, the local wear of the pipeline is still serious. Summary of the invention

[0004] The object of the present invention is to provide a mine or pit backfill pipeline to improve or solve the technical problems existing in the prior art as described above.

[0005] The technical solution provided by the present invention is as follows: a mine or pit backfill pipeline, including a horizontal conveying pipeline and multiple pipeline supports, the horizontal conveying pipeline includes multiple pipe sections, and the multiple pipe sections are connected as a whole through flanges. Pipe section connectors are provided at both ends of the horizontal conveying pipeline, and the pipe section connectors are used to connect this section of the horizontal conveying pipeline with the upstream and downstream pipelines; the pipeline support includes an inclined bearing beam, and at least two pipeline bearing positions are provided on the inclined bearing beam, and the pipeline bearing positions are provided with concave arc sections that are compatible with the outer circumference of the pipeline; the pipe sections are supported on the concave arc sections.

[0006] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: the horizontal conveying pipeline is erected on the inclined bearing beam of the pipeline support, and the concave arc section on the pipeline bearing position is matched with the outer periphery of the pipe segment to limit the horizontal conveying pipeline; the horizontal conveying pipeline is erected on the pipeline bearing position located at the top, and the inner wall below the pipeline is worn when transporting materials. When the pipeline on the inner wall below reaches the critical point of wear, the pipeline is pushed into the next-level pipeline bearing position. After the pipeline rolls along the inclined bearing beam and falls into the next-level pipeline bearing position, the worn inner wall below the original pipeline becomes the inner wall above the pipeline, and the unworn inner wall position above the original pipeline becomes the inner wall below the pipeline, thereby extending the service life of the pipeline and avoiding waste of resources caused by replacing the pipeline.

[0007] Based on the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the pipeline support also includes a bottom beam and a column, and the bottom beam, the column and the inclined load-bearing beam form a triangular or trapezoidal frame.

[0009] The beneficial effect of adopting the above further solution is that the frame-type pipeline support provides support, and the inclined load-bearing beam realizes the flipping of the conveying pipeline by setting pipeline bearing positions at different heights.

[0010] Furthermore, the pipe joint connecting piece includes a lower groove and an upper groove, the lower groove and the upper groove are respectively provided with ear plates, the ear plates are connected by bolts, and the inner sides of the lower groove and the upper groove are provided with sealing rings.

[0011] The beneficial effect of adopting the above further scheme is that the upper and lower grooves are set on two adjacent pipe sections to accommodate the ends of the pipe sections, ensuring that the pipe sections can be tightly combined with the connecting parts; the internal sealing ring ensures the sealing of the connection to prevent mortar leakage; the ear plates are connected by bolts to provide stronger tensile strength and seismic resistance.

[0012] Furthermore, a limit pin is provided on the concave arc segment.

[0013] The beneficial effect of adopting the above further scheme is that it has a limiting effect on the horizontal conveying pipeline, preventing the transport pipeline from rolling down and leaving the pipeline bearing position; when the pipeline needs to be flipped, the limiting pin can be pulled out and the pin can be inserted again after flipping.

[0014] Furthermore, there are two concave arc segments, and when the pipeline rolls into an adjacent concave arc segment, the pipeline rotates 180 degrees.

[0015] Alternatively, there are three concave arc segments, and when the pipeline rolls into an adjacent concave arc segment, the pipeline rotates 120 degrees.

[0016] The beneficial effect of adopting the above further solution is that by providing two or three concave arc segments for supporting the conveying pipeline, it is convenient to flip the pipeline at different angles and utilize the unworn inner wall.

[0017] Furthermore, the inclination angle of the inclined load-bearing beam relative to the horizontal line is 15 to 45 degrees.

[0018] The beneficial effect of adopting the above further scheme is that in order to ensure the stability of the pipeline during operation, the angle of the inclined load-bearing beam can be set according to the size of the conveying pipeline; when the pipeline diameter is large, a smaller inclination angle can be selected, and when the pipeline diameter is small, a larger inclination angle can be selected to facilitate the operation during flipping.

[0019] Furthermore, the slope of the horizontal conveying pipeline is 5 to 15 degrees.

[0020] The beneficial effect of adopting the above further solution is that the slope facilitates the flow of mortar.

[0021] The present invention also discloses a mine or pit backfilling system, comprising the backfilling pipeline as described above, and also comprising a mortar preparation device, a backfilling device and a pumping device.

[0022] The beneficial effect of adopting the above further scheme is that after the mortar preparation device completes the mortar preparation, the mortar is pumped into the pipeline through the pumping device, and then the mortar is transported to the mine or pit that needs backfilling through the vertical conveying pipeline and the horizontal conveying pipeline, and the mine is filled through the backfilling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the pipeline support structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the backfill pipeline structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the first application state of the pipeline support (two concave arc segments) of the present invention;

[0026] Figure 4 It is a cross-sectional view of the pipeline fluid in the first application state;

[0027] Figure 5 This is a schematic diagram of the second application state of the pipeline support (two concave arc segments) of the present invention;

[0028] Figure 6 A cross-sectional view of the pipeline fluid in the second application state;

[0029] Figure 7 This is a schematic diagram of the application state of the pipeline support (three concave arc segments) of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the pipe joint connector of the present invention;

[0031] Fig. 9 It is a schematic cross-sectional structure diagram of the pipe joint connector of the present invention;

[0032] Fig.10 A diagram showing the location of the present invention in a mine tunnel;

[0033] Fig.11 This is a schematic diagram of the backfill pipeline of the present invention being softly connected at the far end;

[0034] Fig.12 It is a schematic diagram of laying the backfill pipeline in the mine pit of the present invention;

[0035] Fig.13 The cross-sectional views of the pipeline fluid corresponding to the three application states of the present invention;

[0036] Fig.14 It is a schematic diagram of the structure of the backfill system of the present invention.

[0037] In the figure, 1. horizontal conveying pipeline; 2. pipeline support; 3. pipe joint; 4. flange; 5. pipe joint connector; 51. upper groove; 52. lower groove; 53. sealing ring; 54. ear plate; 55. bolt; 6. inclined load-bearing beam; 7. pipeline load-bearing position; 8. bottom beam; 9. column; 10. limit pin. DETAILED DESCRIPTION

[0038] When interpreting the description of this application, it is necessary to clarify that the directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the perspectives and layouts shown in the drawings, and are intended to facilitate explanation and simplify the description process, rather than being absolute limitations on the actual directions, construction methods, and operation modes of the devices or components. Therefore, these terms should not be understood as restrictive interpretations of the content of this application.

[0039] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] Embodiment 1

[0041] like Figure 1-Figure 3As shown, a mine or pit backfill pipeline includes a horizontal conveying pipeline 1 and a plurality of pipeline supports 2. The horizontal conveying pipeline 1 includes a plurality of pipe segments 3, and the plurality of pipe segments 3 are connected as a whole through flanges 4. Pipe segment connectors 5 are provided at both ends of the horizontal conveying pipeline 1, and the pipe segment connectors 5 are used to connect this section of the horizontal conveying pipeline 1 with the upstream and downstream pipelines; the pipeline support 2 includes an inclined bearing beam 6, and the inclined bearing beam 6 is provided with two pipeline bearing positions 7, and the pipeline bearing position 7 is provided with a concave arc segment that matches the outer circumference of the pipeline; the pipe segment 3 is supported on the concave arc segment. Figure 1 and Figure 7 The pipeline support 2 also includes a bottom beam 8 and a column 9, and the bottom beam 8, the column 9 and the inclined bearing beam 6 form a triangular or trapezoidal frame. The frame-type pipeline support 2 provides support, and the inclined bearing beam 6 realizes the flipping of the conveying pipeline by setting pipeline bearing positions 7 of different heights.

[0042] like Figure 3-Figure 6 As shown, the horizontal conveying pipeline 1 is firstly erected on the pipeline bearing position 7 located at the top, and the pipeline bearing position 7 is provided with two concave arc segments, and the concave arc segments on the pipeline bearing position 7 are adapted to the outer periphery of the pipe segment 3, and cooperate with the limiting latch 10 to limit the horizontal conveying pipeline 1; Figure 4 When transporting materials, the inner wall B surface below the pipe segment 3 is worn. After the filling pipeline has been used for a period of time, the wear condition is judged based on experience. When the pipe segment 3 on the inner wall B surface below reaches the critical wear point, the pipe segment connectors 5 at both ends of the horizontal conveying pipeline 1 are opened, and the limit pins 10 are removed. The horizontal conveying pipeline 1 can be pushed manually, and the horizontal conveying pipeline 1 is rolled 180 degrees along the inclined load-bearing beam 6 and falls into the pipe bearing position 7 below. Then the limit pins 10 are inserted into the concave arc section of the load-bearing pipeline to limit the position. Figure 5 and Figure 6 As shown, at this time, the pipe segment 3 on the lower inner wall B surface is flipped upward, and the upper inner wall A surface that was originally in an idle state is flipped downward, continuing to transport mortar like a new pipe, extending the service life of the pipe and avoiding waste of resources caused by replacing the pipe.

[0043] Specifically, Figure 8 and Fig. 9As shown, the pipe joint connector 5 includes a lower groove 52 and an upper groove 51, and the lower groove 52 and the upper groove 51 are respectively provided with ear plates 54, and the ear plates 54 are connected by bolts 55. The inner sides of the lower groove 52 and the upper groove 51 are provided with sealing rings 53. The upper and lower grooves 52 are sleeved on two adjacent pipe joints 3 to accommodate the ends of the pipe joints 3 to ensure that the pipe joints 3 can be tightly combined with the connector; the internal sealing ring 53 ensures the sealing of the connection to prevent mortar leakage; the ear plates 54 are connected by bolts 55 to provide stronger tensile strength and seismic resistance. Although the pipe joint connector 5 is provided with a sealing ring 53 and bolts 55 for locking, the system does not have strict requirements for sealing, and even if there is seepage, it will not affect normal operation.

[0044] like Fig.11 As shown, a soft connection structure is provided at the connection of the pipe segment 3. If the upstream and downstream ends of the multiple horizontal conveying pipelines 1 cannot be connected after being turned over, a soft connection can be used to solve the problem. With this structure, it is easy and convenient to turn over the multiple pipe segments 3, and the life of the pipeline can be doubled.

[0045] like Fig.10 As shown, the tilt angle of the tilted load beam 6 relative to the horizontal line is 15 to 45 degrees. In order to ensure the stability of the pipeline during operation, the angle of the tilted load beam 6 can be set according to the size of the conveying pipeline. When the pipeline diameter is large, a smaller tilt angle can be selected, and when the pipeline diameter is small, a larger tilt angle can be selected to facilitate the operation during flipping. Fig.12 As shown, the slope of the horizontal conveying pipeline 1 is 5 to 15 degrees, and the inclination of the pipeline facilitates the flow of mortar.

[0046] Embodiment 2

[0047] On the basis of Example 1, Figure 1 and Fig.13As shown, the horizontal conveying pipeline 1 is first erected on the pipe bearing position 7 located at the top. According to the different flow rates of the conveyed mortar, when the liquid level height during mortar transportation is about 1 / 3 of the diameter of the pipe segment 3, the pipe bearing position 7 is set to three, and the pipe bearing position 7 is provided with a concave arc segment that matches the outer periphery of the pipeline; the pipe segment 3 is supported on the concave arc segment. The concave arc segment on the pipe bearing position 7 matches the outer periphery of the pipe segment 3, and cooperates with the limit pin 10 to limit the horizontal conveying pipeline 1; when transporting materials, the inner wall C surface of the lower 1 / 3 of the pipe segment 3 is worn. After the filling pipeline has been used for a period of time, the wear condition is judged based on experience. When the inner wall C surface of the lower part of the pipe segment 3 reaches the critical point of wear, the pipe segment connectors 5 at both ends of the horizontal conveying pipeline 1 are opened, and the limit pin 10 is removed. The horizontal conveying pipeline 1 can be pushed manually to roll the horizontal conveying pipeline 1 120 degrees along the inclined bearing beam 6. , fall into the pipe bearing position 7 located in the middle, and then insert the limit pin 10 into the concave arc section of the bearing pipe to limit the position. At this time, the inner wall of the D surface faces downward, and the unused 1 / 3 inner wall of the pipe segment 3 is used to transport the mortar; when the D surface pipe segment 3 is seriously worn, repeat the above operation again, roll the horizontal conveying pipeline 1 120 degrees along the inclined bearing beam 6, and fall into the pipe bearing position 7 located at the bottom. At this time, the inner wall of the E surface faces downward, and the remaining unused 1 / 3 inner wall of the pipe segment 3 is used to transport the mortar, and the mortar material continues to be transported like a new pipe. In this way, the same pipe is used three times, which doubles the service life of the pipe and avoids the waste of resources caused by replacing the pipe.

[0048] A mine or pit backfill system, such as Fig.12 and Fig.14 As shown, it includes the backfill pipeline as described above, and also includes a mortar preparation device, a backfill device and a pumping device. After the mortar is prepared by the mortar preparation device, it is transported through the vertical conveying pipeline and the horizontal conveying pipeline 1. In the section where power-assisted transportation is required, the pumping device provides power to make the mortar flow along the pipeline, and the mortar is transported to the mine or pit that needs backfilling through the conveying pipeline, and the mine is filled by the backfilling device.

[0049] Method of use of the present invention:

[0050] When laying the pipeline, the highest concave arc section on the inclined load-bearing beam 6 is first used to support the pipeline. One pipe segment 3 can use 2-3 pipeline supports 2, and both ends of the horizontal conveying pipeline 1 can be connected with the upstream and downstream through the pipe segment connector 5. When the upstream and downstream pipelines turn or cannot roll at the same time, a soft connection can be used as the pipe segment connector 5.

[0051] In order to use the pipe in a balanced manner and extend the service life of the pipe, after the filling pipe has been used for a period of time, the wear condition is judged based on experience, and the pipe joint connectors 5 at both ends of the horizontal conveying pipeline 1 are opened. The horizontal conveying pipeline 1 can be pushed manually and rolled to the adjacent low-position concave arc segment. For example, the pipe is rotated 180 degrees and then the pipe joint connector 5 is locked. In the later work, the upper arc segment that was originally in an idle state is turned to the lower part and continues to transport mortar like a new pipe.

[0052] If the upstream and downstream ends of the plurality of horizontal conveying pipelines 1 cannot be connected after being turned over, a flexible connection can be used to solve the problem. This structure makes it easy and convenient to turn over the plurality of pipe sections 3, and can double the service life of the pipeline.

[0053] Regarding the proportion and method of mortar preparation, such as a mine underground filling mortar, including cementitious material, water and fine aggregate, the mass ratio of each component is 1: (2.0 ~ 2.6): (4 ~ 6); the cementitious material includes tailings powder, slag powder, quicklime and desulfurization ash, the weight parts of each component are: iron tailings powder 14 ~ 27 parts, slag powder 45 ~ 62 parts, quicklime 12 ~ 24 parts, desulfurization ash 3 ~ 12 parts; the fine aggregate is all-iron tailings sand, the particle size of the all-iron tailings sand is 0.15mm ~ 2.36mm. By utilizing the activity and "potential water hardness" of tailings powder and slag powder, strong coagulation and hardness can be achieved. The alkaline environment provided by quicklime for slag hydrolysis can destroy the acidic film layer and irregular chemical chain structure on the slag surface, thereby preparing an ideal cementitious material. At the same time, the iron tailings sand with relatively hard properties is consolidated to prepare mortar. This mortar has good fluidity within a certain period of time and can be transported by pipeline in engineering applications.

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

Claims

1. A mine or pit backfill pipeline, comprising a horizontal conveying pipeline (1) and a plurality of pipeline supports (2), characterized in that: The horizontal transport pipeline (1) comprises a plurality of pipe sections (3), the plurality of pipe sections (3) being connected as a whole via flanges (4), and pipe section connectors (5) are provided at both ends of the horizontal transport pipeline (1), the pipe section connectors (5) being used to connect the current section of the horizontal transport pipeline (1) with upstream and downstream pipelines; The pipeline support (2) comprises an inclined bearing beam (6), the inclined bearing beam (6) is provided with at least two pipeline bearing positions (7), and the pipeline bearing positions (7) are provided with concave arc sections adapted to the outer circumference of the pipeline; The pipe section (3) is supported on the concave arc section.

2. The mine or pit backfill pipeline according to claim 1, characterized in that: The pipeline support (2) also includes a bottom beam (8) and a column (9), and the bottom beam (8), the column (9) and the inclined load-bearing beam (6) form a triangular or trapezoidal frame.

3. The mine or pit backfill pipeline according to claim 1, characterized in that: The pipe joint connecting member (5) comprises a lower groove (52) and an upper groove (51), wherein the lower groove (52) and the upper groove (51) are respectively provided with ear plates (54), wherein the ear plates (54) are connected by bolts (55), and sealing rings (53) are provided on the inner sides of the lower groove (52) and the upper groove (51).

4. The mine or pit backfill pipeline according to claim 1, characterized in that: A limit latch (10) is also provided on the concave arc segment.

5. The mine or pit backfill pipeline according to claim 1, characterized in that: There are two concave arc sections, and when the pipeline rolls into an adjacent concave arc section, the pipeline rotates 180 degrees.

6. The mine or pit backfill pipeline according to claim 1, characterized in that: There are three concave arc sections, and when the pipeline rolls into an adjacent concave arc section, the pipeline rotates 120 degrees.

7. A mine or pit backfill pipeline according to any one of claims 1 to 6, characterized in that: The inclination angle of the inclined load-bearing beam (6) relative to the horizontal line is 15 to 45 degrees.

8. The mine or pit backfill pipeline according to any one of claims 1 to 6, characterized in that: The slope of the horizontal conveying pipeline (1) is 5 to 15 degrees.

9. A mine or pit backfill system, characterized in that: It comprises the backfill pipeline as described in any one of claims 1 to 8, and also comprises a mortar preparation device, a backfill device and a pumping device.

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