Deep well multi-panel stope filling pipeline system

Abstract

The invention provides a deep well multi-panel stope filling pipeline system which comprises an input end, a plurality of output ends, a series-connection type pipeline and a first direction control valve, the input end is arranged at an input connector of the series-connection type pipeline, the series-connection type pipeline is provided with a plurality of output connectors, the output connectors are arranged in the conveying direction of the series-connection type pipeline, and the first direction control valve is arranged in the conveying direction of the series-connection type pipeline. The output end is arranged at the output interface; the first direction control valve is arranged at the output interface and is used for controlling the filling slurry to flow to the output interface corresponding to the first direction control valve and / or the next input interface. Therefore, the filling slurry conveyed by the input end can be conveyed to each stope or goaf at the same time through the serial pipelines, it is guaranteed that the filling slurry can be conveyed to each stope or goaf, meanwhile, the complexity of a filling slurry conveying pipe network is simplified, and then the laying cost of the stope filling pipeline system is reduced.

Description

Technical Field

[0001] This application relates to the field of mine backfilling technology, specifically to a backfilling pipeline system for deep well multi-panel stopes. Background Technology

[0002] With the increasing demand for mineral resources, frequent mining of shallow resources has led to their gradual depletion. Deep resources, with their abundant reserves and great potential, are increasingly being explored, making deeper mining an inevitable trend in underground mining development. Currently, there are three main mining methods in underground mines: open-cut mining, caving mining, and backfilling mining. Backfilling mining, due to its significant advantages such as effective control of ground pressure and reduction of dilution losses, is considered an essential method for deep mining. In deep mining using backfilling mining, a common method is to pump and transport backfill slurry through pipelines. This method typically involves a direct pipeline connection between the surface material discharge equipment and the goaf, with one backfilling pump corresponding to one pipeline. The pump pressure transports the backfill slurry from the surface to the underground goaf for backfilling. However, for multi-panel mining areas with multiple complexly distributed goafs, the single-pipeline design requires laying a separate pipeline for each goaf, significantly increasing the cost of laying the backfill pipeline. Summary of the Invention

[0003] In view of the technical problems existing in the background art, this application provides a deep well multi-panel stope filling pipeline system. By setting multiple series pipelines for connecting the output end of the goaf and a first directional control valve, chain filling is realized, which can achieve "point-and-shoot", that is, the goaf filling operation can be started and stopped at any time. This not only reduces the laying cost of filling pipelines, but also makes the goaf filling operation management easier.

[0004] This application provides a deep well multi-panel stope filling pipeline system, including: The input terminal is used to input the filling slurry; Multiple output terminals for outputting filler slurry; A series pipeline, wherein the input end is disposed at the input interface of the series pipeline, the series pipeline is provided with multiple output interfaces, and the multiple output interfaces are arranged along the conveying direction of the series pipeline, and the output end is disposed at the output interface; A first directional control valve is disposed at the output interface and is used to control the flow direction of the filling slurry to the output interface corresponding to the first directional control valve and / or the next input interface.

[0005] Furthermore, in this embodiment, the series pipeline includes multiple sections of conveying pipeline and an output interface. The first directional control valve is a three-position control valve. The multiple sections of conveying pipeline are connected end to end in sequence, and two adjacent conveying pipelines are connected through the first directional control valve. The output interface is located at the connection point of two adjacent conveying pipelines and is connected to the first directional control valve.

[0006] Furthermore, in this embodiment, an intermediate pipeline network is also included, which is disposed between the input end and the series pipeline to form multiple conveying channels for conveying filling slurry.

[0007] Furthermore, in this embodiment, multiple input terminals are provided, and all of the multiple input terminals are connected to the intermediate pipeline network.

[0008] Furthermore, in this embodiment, the intermediate pipeline network includes... Multiple second-direction control valves are provided, with each input end having a set of second-direction control valves, and the input end being located at the input port of the second-direction control valve. The second-direction control valve is also provided with multiple output ports. Multiple third-direction control valves are provided, each third-direction control valve having an input interface and an output interface. The input interface is used to connect to the second-direction control valve, and the output interface is used to connect to the series pipeline. The third directional control valve is provided with at least two input interfaces, and each input interface is connected to a second directional control valve.

[0009] Furthermore, in this embodiment, the third-party directional control valve is provided with multiple output interfaces.

[0010] Furthermore, in this embodiment, a pressure sensor is also included. The pressure sensor is provided on the first directional control valve, the second directional control valve, and the third directional control valve. The pressure sensor is used to monitor the pressure data of the first directional control valve, the second directional control valve, and the third directional control valve.

[0011] Furthermore, in this embodiment, a control device is also included. The pressure sensor, the first directional control valve, the second directional control valve, and the third directional control valve are all electrically connected to the control device. The control device is used to receive the pressure data and control the first directional control valve, the second directional control valve, and the third directional control valve according to the pressure data.

[0012] Furthermore, in this embodiment, a slurry preparation device is also included, which is used to deliver filling slurry to the input end.

[0013] Furthermore, in this embodiment, a filling pump is also included, which is disposed at the input end and is used to assist in conveying the filling slurry.

[0014] Beneficial Effects: This application provides a deep well multi-panel stope filling pipeline system, including: an input end, multiple output ends, a series pipeline, and a first directional control valve. The input end is used to input filling slurry; the output end is used to output filling slurry. The input end is located at the input interface of the series pipeline, which has multiple output interfaces arranged along the conveying direction of the series pipeline. The output end is located at the output interface. The first directional control valve is located at the output interface and is used to control the flow direction of the filling slurry to the output interface corresponding to the first directional control valve and / or the next input interface. It is understood that in this embodiment, multiple stopes or goafs are connected in series via a series pipeline, allowing the filling slurry delivered from the input end to be simultaneously delivered to each stope or goaf through the series pipeline. This ensures that the filling slurry can be delivered to each stope or goaf while simplifying the complexity of the filling slurry delivery pipeline network, thereby reducing the laying cost of the stope filling pipeline system. Secondly, in this embodiment, a first directional control valve is set at each output end connected to the series pipeline. The first directional control valve controls the opening and closing of the series pipeline and the corresponding output end, so as to realize the control of slurry filling in each mining area or goaf, so as to achieve "point-and-shoot", that is, the goaf filling operation can be started and stopped at any time.

[0015] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0017] Figure 1 This application provides a framework structure diagram of a deep well multi-panel stope filling pipeline system as an embodiment; Figure 2 This application provides a structural schematic diagram of a deep well multi-panel stope filling pipeline system.

[0018] Explanation of reference numerals in the attached figures: 10. Input terminal; 11. Slurry preparation device; 12. Filling pump; 20. Output terminal; 30. Series piping; 31. Conveying piping; 32. Output interface; 40. First directional control valve; 50. Intermediate piping network; 51. Secondary directional control valve; 52. Third directional control valve; 60. Pressure sensor; 70. Control device. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0025] In the description of the embodiments of this application, the technical 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 only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0026] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0027] With the increasing demand for mineral resources, frequent mining of shallow resources has led to their gradual depletion. Deep resources, with their abundant reserves and great potential, are increasingly being explored, making deeper mining an inevitable trend in underground mining development. Currently, there are three main mining methods in underground mines: open-cut mining, caving mining, and backfilling mining. Backfilling mining, due to its significant advantages such as effective control of ground pressure and reduction of dilution losses, is considered an essential method for deep mining. In deep mining using backfilling mining, a common method is to pump and transport backfill slurry through pipelines. This method typically involves a direct pipeline connection between the surface material discharge equipment and the goaf, with one backfilling pump corresponding to one pipeline. The pump pressure transports the backfill slurry from the surface to the underground goaf for backfilling. However, for multi-panel mining areas with multiple complexly distributed goafs, the single-pipeline design requires laying a separate pipeline for each goaf, significantly increasing the cost of laying the backfill pipeline.

[0028] To address the technical challenge of requiring a separate pipeline for each goaf in a single-pipeline transportation design, which increases the cost of laying filling pipelines, this embodiment provides a deep well multi-panel stope filling pipeline system. By incorporating multiple series-connected pipelines for linking the output ends of the goaf areas and a first-direction control valve, chain filling is achieved, enabling precise filling wherever needed. This means that goaf filling operations can be started and stopped as needed, reducing the cost of laying filling pipelines and facilitating goaf filling operation management.

[0029] Please refer to Figure 1 , Figure 1 This application provides a framework structure diagram of a deep well multi-panel stope filling pipeline system, including: an input end 10, multiple output ends 20, a series pipeline 30, and a first directional control valve 40. The input end 10 is used to input filling slurry; the output ends 20 are used to output filling slurry; the input end 10 is located at the input interface of the series pipeline 30, which has multiple output interfaces arranged along the conveying direction of the series pipeline 30; the output ends 20 are located at the output interfaces; and the first directional control valve 40 is located at the output interfaces to control the flow direction of the filling slurry to the output interface corresponding to the first directional control valve 40 and / or the next input interface. Understandably, in this embodiment, multiple stopes or goafs are connected in series via a series pipeline 30, so that the filling slurry delivered by the input end 10 can be simultaneously delivered to each stope or goaf through the series pipeline 30. This ensures that the filling slurry can be delivered to each stope or goaf while simplifying the complexity of the filling slurry delivery pipeline network, thereby reducing the laying cost of the stope filling pipeline system. Secondly, in this embodiment, a first directional control valve 40 is installed at each output end 20 connected to the series pipeline 30. The first directional control valve 40 controls the opening and closing of the series pipeline 30 and the corresponding output end 20, so as to realize the control of the filling of slurry in each stope or goaf, achieving "point-and-shoot," that is, the goaf filling operation can be started and stopped at will.

[0030] In some embodiments, such as Figure 2As shown, the series-connected pipeline 30 includes multiple sections of conveying pipeline 31 and an output interface 32. The first directional control valve 40 is a three-position control valve. The multiple sections of conveying pipeline 31 are connected end to end in sequence, and two adjacent conveying pipelines 31 are connected by the first directional control valve 40. The output interface 32 is located at the connection point of two adjacent conveying pipelines 31 and is connected to the first directional control valve 40. It can be understood that in this embodiment, the series-connected pipeline 30 is composed of multiple sections of conveying pipeline 31 connected in series. Therefore, during the laying of the filling pipeline system, the conveying pipelines 31 can be connected in series according to the number and location of each stope or goaf, thereby enabling the output interface 32 set on the conveying pipeline 31 to penetrate into the corresponding stope or goaf, improving the scalability of the filling pipeline system.

[0031] In some embodiments, such as Figure 1 As shown, it also includes an intermediate pipeline network 50, which is set between the input end 10 and the series pipeline 30 to form multiple conveying channels for conveying filling slurry. It can be understood that, in this embodiment, an intermediate pipeline network 50 with multiple conveying channels is set between the input end 10 and the series pipeline 30, so that when a section of the pipeline is damaged or unusable (i.e., one conveying channel is damaged or unusable) during the use of the filling pipeline system, the filling slurry can be conveyed through another conveying channel. In deep well operations, this avoids the situation where the filling operation cannot be repaired in time due to the deep burial of the pipeline, thus achieving continuous filling and conveying operation.

[0032] In some alternative embodiments, such as Figure 2 As shown, multiple input terminals 10 are provided, and all multiple input terminals 10 are connected to the intermediate pipeline network 50. It can be understood that in this embodiment, multiple input terminals 10 are simultaneously connected to the intermediate pipeline network 50 and simultaneously deliver filling slurry to the intermediate pipeline network 50, thereby improving the delivery efficiency of the filling pipeline system. At the same time, in this embodiment, when one of the input terminals 10 fails and stops delivering filling slurry to the filling pipeline system, setting up multiple input terminals 10 can ensure that the other input terminals 10 can normally deliver filling slurry to the filling pipeline system, thereby increasing the redundancy of the filling pipeline system.

[0033] In some embodiments, such as Figure 2As shown, the intermediate pipeline network 50 includes multiple second-direction control valves 51 and multiple third-direction control valves 52. In this embodiment, the second-direction control valves 51 are also provided with an inlet and multiple outlets. Each inlet 10 is provided with a set of second-direction control valves 51, and the inlet 10 is located at the inlet of the second-direction control valve 51. The third-direction control valves are provided with an input interface and an output interface, and the third-direction control valves 52 are provided with at least two input interfaces. The input interface is used to connect to the second-direction control valves 51, and the output interface is used to connect to the series pipeline 30. During the process of connecting the second-direction control valves 51 and the third-direction control valves 52, the outlet of the second-direction control valve 51 is connected to the input interface of the third-direction control valve 52, and each input interface is connected to one second-direction control valve 51. It is understood that in this embodiment, a second directional control valve 51 can be connected to multiple third directional control valves 52 simultaneously. Therefore, multiple delivery channels can be formed between the multiple second directional control valves 51 and the multiple third directional control valves 52. This not only allows the filling slurry to bypass the blocked pipe by controlling the second directional control valve 51 or the third directional control valve 52 when a section of a pipeline is blocked, but also ensures the normal transportation of the filling slurry and improves system redundancy.

[0034] In some embodiments, such as Figure 2 As shown, the third-party directional control valve 52 is provided with multiple output interfaces. It can be understood that in this embodiment, multiple series pipes 30 can be connected in parallel on the third-party directional control valve 52. Therefore, during use, multiple series pipes 30 extending to non-mining areas can be connected simultaneously through the third-party directional control valve 52, thereby enabling the system to simultaneously transport filling slurry to the goaf areas in different mining areas.

[0035] Due to the large drop in elevation, high pressure inside the pipe, and severe wear during deep well mining, coupled with the lack of timeliness and accuracy in pipeline inspection work (i.e., it is impossible to determine in real time whether there is a blowout or burst in the pipeline during the filling operation, and the location of the damage cannot be determined), in order to more conveniently monitor the condition of the pipeline system, in some embodiments, the pipeline system also includes a pressure sensor 60. Pressure sensors 60 are installed on the first directional control valve 40, the second directional control valve 51, and the third directional control valve 52. The pressure sensors 60 monitor the pressure data of the first directional control valve 40, the second directional control valve 51, and the third directional control valve 52 to achieve health monitoring of the pipeline system.

[0036] For example, in this embodiment, such as Figure 1As shown, pressure sensors 60 are installed at the inlets of the first directional control valve 40, the second directional control valve 51, and the third directional control valve 52. The entire pipeline is divided into segments according to the installation position of the pressure sensors 60, and the pressure in each segment is monitored in real time. When a segment of the pipeline is damaged, the pressure sensor 60 in the end switching valve detects the decrease in hydraulic pressure, thereby accurately locating the damaged part to the segment and facilitating subsequent maintenance.

[0037] In some embodiments, such as Figure 1 As shown, the pipeline system also includes a control device 70. A pressure sensor 60, a first directional control valve 40, a second directional control valve 51, and a third directional control valve 52 are all electrically connected to the control device 70. The control device 70 receives pressure data and controls the first directional control valve 40, the second directional control valve 51, and the third directional control valve 52 based on the pressure data. It can be understood that in this embodiment, when a section of the pipeline is damaged, the pressure sensor 60 inside the end switching valve detects a decrease in hydraulic pressure and transmits the pressure data to the control device 70. The control device 70 accurately locates the damaged section of the pipeline based on the received pressure data and controls the corresponding second directional control valve 51 or third directional control valve 52 to adjust it, thereby achieving automatic switching of the delivery channel.

[0038] In some embodiments, such as Figure 2 As shown, it also includes a slurry preparation device 11, which is used to deliver filling slurry to the input end 10. Exemplarily, the slurry preparation device 11 generally includes a mixer, a storage silo, a pump, and a control cabinet. The slurry preparation device 11 is large and complex in structure, while the space inside the well is usually extremely precious and narrow. Therefore, in this embodiment, the slurry preparation device 11 is located outside the well, which not only reduces the cost of equipment installation, operation, and maintenance, but also makes the surface preparation system relatively independent of the downhole working face. Its operation is less affected by the complex downhole environment and operational interference, thus improving the reliability and flexibility of the slurry preparation device 11.

[0039] In some embodiments, such as Figure 2 As shown, it also includes a filling pump 12, which is installed at the input end 10. By installing the filling pump 12 at the input end 10 to assist in conveying the filling slurry, the conveying efficiency of the system is improved.

[0040] 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 deep well multi-panel stope filling pipeline system, characterized in that, include: The input terminal is used to input the filling slurry; Multiple output terminals for outputting filler slurry; A series pipeline, wherein the input end is disposed at the input interface of the series pipeline, the series pipeline is provided with multiple output interfaces, and the multiple output interfaces are arranged along the conveying direction of the series pipeline, and the output end is disposed at the output interface; A first directional control valve is disposed at the output interface and is used to control the flow direction of the filling slurry to the output interface corresponding to the first directional control valve and / or the next input interface.

2. The deep well multi-panel stope filling pipeline system according to claim 1, characterized in that, The series pipeline includes multiple sections of conveying pipeline and an output interface. The first directional control valve is a three-position control valve. The multiple sections of conveying pipeline are connected end to end in sequence, and two adjacent conveying pipelines are connected through the first directional control valve. The output interface is located at the connection point of two adjacent conveying pipelines and is connected to the first directional control valve.

3. The deep well multi-panel stope filling pipeline system according to claim 1, characterized in that, It also includes an intermediate pipeline network, which is set between the input end and the series pipeline to form multiple conveying channels for conveying filling slurry.

4. The deep well multi-panel stope filling pipeline system according to claim 3, characterized in that, The input terminal is provided in multiple ways, and all of the input terminals are connected to the intermediate pipeline network.

5. The deep well multi-panel stope filling pipeline system according to claim 4, characterized in that, The intermediate pipeline network includes: Multiple second-direction control valves are provided, with each input end having a set of second-direction control valves, and the input end being located at the input port of the second-direction control valve. The second-direction control valve is also provided with multiple output ports. Multiple third-direction control valves are provided, each third-direction control valve having an input interface and an output interface. The input interface is used to connect to the second-direction control valve, and the output interface is used to connect to the series pipeline. The third directional control valve is provided with at least two input interfaces, and each input interface is connected to a second directional control valve.

6. The deep well multi-panel stope filling pipeline system according to claim 5, characterized in that, The third-party directional control valve is equipped with multiple output interfaces.

7. The deep well multi-panel stope filling pipeline system according to claim 5, characterized in that, It also includes pressure sensors, which are provided on the first directional control valve, the second directional control valve and the third directional control valve. The pressure sensors are used to monitor the pressure data of the first directional control valve, the second directional control valve and the third directional control valve.

8. The deep well multi-panel stope backfilling pipeline system according to claim 7, characterized in that, It also includes a control device, wherein the pressure sensor, the first directional control valve, the second directional control valve and the third directional control valve are all electrically connected to the control device. The control device is used to receive the pressure data and control the first directional control valve, the second directional control valve and the third directional control valve according to the pressure data.

9. The deep well multi-panel stope filling pipeline system according to claim 1, characterized in that, It also includes a slurry preparation device for conveying filling slurry to the input end.

10. The deep well multi-panel stope filling pipeline system according to claim 1, characterized in that, It also includes a filling pump, which is located at the input end and is used to assist in the delivery of filling slurry.

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