Underground pipeline filling system

Abstract

The utility model relates to an underground pipeline filling system. The underground pipeline filling system comprises a filling pipeline and filling equipment, the filling pipeline is arranged in a crossheading, the orientation of the filling pipeline is the same as the coal seam mining direction, the filling pipeline is provided with an arc-shaped section and / or a linear section, and the filling equipment is connected with the front end of the filling pipeline. According to the underground pipeline filling system, filling materials can be directly conveyed to the to-be-filled position of the working face through the filling pipeline, turning of flowing of the filling materials is reduced, the conveying resistance of the filling pipeline is reduced, a certain distance is kept between the filling pipeline and the surface of a coal seam, friction force between the pipeline and the surface of the coal seam is reduced, and filling efficiency is improved. And meanwhile, the arrangement density of the filling pipelines is improved, and the filling rate of the filling pipelines is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to an underground pipeline filling system. Background Art

[0002] The filling pipeline refers to a pipeline system for transporting filling materials, and its main function is to transport the prepared filling materials along the pipeline to a predetermined filling area, such as the goaf of a mine, the cavity of an underground project, or for purposes such as foundation reinforcement. The filling rate of the pipeline refers to the filling degree of the filling material in the pipeline during the filling operation. It is related to the flow performance of the filling material, the pipeline transportation efficiency, and whether the filling material can be continuously and stably transported to the target area. The filling rate of the pipeline indirectly affects the caving effect and caving rate after filling. The caving rate has a significant impact on the continuous mining and filling process and directly affects the safe mining of the branch roadway. When the caving rate of the filling branch roadway is low, there are risks such as roof caving and harmful gas emission during the mining of the adjacent coal pillar. Therefore, optimizing and improving the filling rate of the pipeline is an important factor in improving the caving rate and ensuring mining safety and efficiency.

[0003] However, in the related art, the filling rate of the pipeline is low. For example, a deep well filling pipeline for transporting tailings paste filling materials disclosed in the patent document CN221144512U has a vertical pipeline arrangement, and the flow smoothness of the paste in the pipeline is poor, and the transportation resistance is large, resulting in a low filling rate of the pipeline. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the utility model provides an underground pipeline filling system, in which the flow smoothness of the filling material in the pipeline is good, the transportation resistance of the pipeline is reduced, and it is beneficial to improve the filling rate of the pipeline.

[0005] The underground pipeline filling system according to the embodiment of the utility model includes:

[0006] A filling pipeline, which is arranged in the gate roadway, the orientation of the filling pipeline is the same as the coal seam mining direction, and the filling pipeline has an arc section and / or a straight section;

[0007] Filling equipment, which is connected to the front end of the filling pipeline; and

[0008] A diversion device, which is arranged at the end of the filling pipeline;

[0009] A moving component, which is adapted to transport the filling equipment and the filling pipeline to a preset position.

[0010] The underground pipeline filling system according to the embodiment of the present utility model keeps the orientation of the filling pipeline consistent with the coal seam mining direction, that is, arranges the filling pipeline along the advancing direction of the mining face. In other words, the trend of the filling pipeline is parallel to the advancing line of the working face, which can directly transport the filling material through the filling pipeline to the position to be filled on the working face, reduce the turning of the filling material flow, reduce the transportation resistance of the filling pipeline, and is conducive to improving the filling rate of the filling pipeline. The filling pipeline has an arc section and / or a straight section, so that the filling pipeline can be provided with corresponding arc sections and straight sections according to the characteristics of the coal seam and the bending section of the gateway, so that the filling pipeline keeps a certain distance from the coal seam surface, reduces the friction between the pipeline and the coal seam surface, and is also conducive to improving the density of the filling pipeline arrangement. A diversion device is arranged at the end of the filling pipeline, which can avoid the focus blockage at the end of the filling pipeline, ensure the smooth flow of the filling material in the filling pipeline, not only can ensure the filling effect, ensure the safe production of the coal mine, but also is conducive to improving the filling rate of the filling pipeline. By setting a moving part, the moving part can be used to move the filling equipment and the filling pipeline to install or move the filling equipment, shorten the time for installing and debugging the equipment, and thus improve the filling efficiency. At the same time, it is convenient to move the filling equipment. At the same time, it can also transport the materials or objects required for filling to the preset position, improving the convenience of using the underground filling system.

[0011] In some embodiments, the coal gangue is classified according to the particle size, and the voids around the filling pipeline are filled in a graded manner.

[0012] In some embodiments, the dip angle of the coal seam is less than 15°, the thickness of the coal seam is 0.8 m - 1.2 m, the distance between the filling pipeline and the coal seam in the up-down direction is 20 cm - 30 cm, the inner diameter of the filling pipeline is 120 mm - 300 mm, and the radian of the arc section is 2π / 3 - 5π / 8.

[0013] In some embodiments, the thickness of the filling pipeline is 4 mm - 8 mm.

[0014] In some embodiments, the dip angle range of the coal seam is 15° - 45°, the thickness of the coal seam is greater than 1.2 m, and the distance between the filling pipeline and the surface of the coal seam is 50 cm - 60 cm.

[0015] In some embodiments, the inner diameter of the pipeline is 300 mm - 400 mm, and the radian of the arc section is 5π / 8 - 19π / 18.

[0016] In some embodiments, the length of the filling pipeline is less than or equal to 1000 m.

[0017] In some embodiments, the thickness of the filling pipeline is 6 mm - 10 mm.

[0018] In some embodiments, the adjacent filling pipes are spaced 2 m - 3.5 m apart in the horizontal direction.

[0019] In some embodiments, the downhole pipe filling system further includes measurement and control equipment, which includes a pressure sensor, a temperature sensor, a humidity sensor, and a flowmeter. The pressure sensor, the temperature sensor, the humidity sensor, and the flowmeter are arranged on the filling pipes. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the downhole pipe filling system according to an embodiment of the present invention.

[0021] Reference Signs:

[0022] Filling pipe system 100, filling pipe 1, filling equipment 2, diversion device 3, coal seam 200. Detailed Description of the Embodiments

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0024] As Figure 1 shown, the downhole pipe filling system 100 according to an embodiment of the present invention includes a filling pipe 1, filling equipment 2, and a diversion device 3. The filling pipe 1 is arranged in the gateway. The orientation of the filling pipe 1 is the same as the coal seam 200 mining direction. The filling pipe 1 has an arc section and / or a straight section. The filling equipment 2 is connected to the front end of the filling pipe 1. The diversion device 3 is arranged at the end of the filling pipe 1.

[0025] It should be noted that the coal seam mining direction is the same as the working face mining direction.

[0026] The underground pipeline filling system 100 according to the embodiment of the present utility model, the filling equipment 2 transports the filling material to the area to be filled, i.e., the target area, through the filling pipeline 1. The filling pipeline system 100 arranges the filling pipeline 1 in the crossheading. By utilizing the existing crossheading roadway layout to arrange the filling pipeline 1, the construction process can be simplified, the extra excavation workload can be reduced, the cost can be saved, and the construction progress can be accelerated. Align the orientation of the filling pipeline 1 with the coal seam 200 mining direction, that is, arrange the filling pipeline 1 along the advancing direction of the mining face. That is to say, the alignment of the filling pipeline 1 is parallel to the advancing line of the working face, which can enable the filling material to be directly transported to the position to be filled on the working face through the filling pipeline 1, reduce the turning of the filling material flow, reduce the transportation resistance of the filling pipeline 1, and is conducive to improving the filling rate of the filling pipeline 1. The filling pipeline 1 has an arc section and / or a straight section, enabling the filling pipeline 1 to be provided with corresponding arc sections and straight sections according to the characteristics of the coal seam 200 and the bending section of the crossheading, thereby possibly reducing the bending of the filling pipeline 1. And arranging the filling pipeline 1 by using the crossheading can limit the filling pipeline, so as to reduce the friction between the filling pipeline and the crossheading wall surface when grouting. That is, reduce the friction between the filling pipeline 1 and the surrounding rock surface, and at the same time, it is also conducive to improving the density of the filling pipeline 1 arrangement. A diversion device 3 is provided at the end of the filling pipeline 1, which can prevent the occurrence of focus blockage at the end of the filling pipeline 1, ensure the smooth flow of the filling material in the filling pipeline 1, not only ensure the filling effect, ensure the safe production of the coal mine, but also be conducive to improving the filling rate of the filling pipeline 1. By setting a moving component (not shown in the figure), the moving component can be used to move the filling equipment 2 and the filling pipeline for equipment installation or movement during filling, shorten the time used for installing and debugging the equipment, thereby improving the filling efficiency. At the same time, it is convenient to move the filling equipment 2, and at the same time, the materials or objects required for filling can be transported to the preset position, improving the convenience of the underground filling system.

[0027] Further, the diversion device 3 is arranged at the end of the filling pipeline 1. The diversion device can be an existing diversion device or diversion equipment. For example, the diversion device is a tee pipe to enhance the filling effect of the slurry at the end of the pipeline and avoid the occurrence of focus blockage at the end of the pipeline.

[0028] It should be noted that the moving component can be a trackless rubber-tyred vehicle, or the moving component is other existing components.

[0029] In order to make the content of this application easier to understand, taking the excavation direction of the coal seam 200 as the direction from right to left as an example, the filling pipeline system 100 in the coal seam 200 according to the embodiment of the present utility model is further described below.

[0030] The filling pipeline system 100 in the coal seam 200 according to the embodiment of the present utility model includes a filling pipeline 1, a filling equipment 2, a diversion device 3, and a measurement and control equipment.

[0031] The filling pipe 1 is arranged in the drift, and the direction of the filling pipe 1 is the same as the mining direction of the coal seam 200. The filling pipe 1 has an arc segment and / or a straight segment. The filling device 2 is connected to the front end of the filling pipe 1. The flow guide device 3 is arranged at the end of the filling pipe 1.

[0032] In some embodiments, the coal gangue particle sizes are graded according to the particle sizes of the coal gangue, and the gaps around the filling pipe 1 are filled in grades.

[0033] Specifically, the coal gangue is classified according to certain screening standards. For example, according to the particle size of the coal gangue, it can be divided into different particle size levels of greater than 50mm, 30-50mm, 20-30mm, 10-20mm and less than 10mm.

[0034] The coal gangue with a larger particle size can be used to fill the gaps around the pipe 1, and the coal gangue with a smaller particle size can be used to fill the smaller gaps in the gaps. For example, the coal gangue with a particle size larger than 50mm, 30-50mm, and 20-30mm can be used to fill the gaps around the pipe, and the coal gangue with a particle size of 10mm-20mm and less than 10mm can be used to fill the gaps during filling, thereby completing the graded filling to increase the filling degree and stability of the filling pipe 1.

[0035] The underground pipe filling system 100 of the embodiment of the utility model can improve the filling efficiency and stability through a graded filling method, can better fill and support the filling branch tunnels, reduce the loss and loss of coal gangue, save resources and reduce costs.

[0036] In some embodiments, when the inclination angle of the coal seam 200 is less than 15°, the thickness of the coal seam 200 is 0.8-1.2m, the distance between the filling pipe 1 and the coal seam 200 in the vertical direction is 20cm-30cm, the inner diameter of the filling pipe 1 is 120mm-300mm, and the curvature of the arc segment is 2π / 3-5π / 8, so as to reduce the friction between the filling pipe 1 and the surface of the coal seam 200 and improve the density of the pipe. The distance between the filling pipe 1 and the coal seam 200 in the vertical direction is 20-30cm, which can be understood as the distance between the filling pipe 1 and the roof in the vertical direction is 20-30cm. At the same time, the roof of the coal seam is often uneven during mining. When the thickness of the coal seam 200 is 0.8-1.2m, the distance between the filling pipe 1 and the coal seam 200 in the vertical direction is 20-30cm, and the uneven roof is avoided as much as possible. Contact with the filling pipe during filling.

[0037] Specifically, the distance between the filling pipeline 1 and the coal seam 200 in the vertical direction is 20 cm - 30 cm, so as to avoid the contact between the filling pipeline 1 and the roof when the filling pipeline swings in the crossheading during grouting filling, avoiding the friction of the filling pipeline 1. And the radian of the arc section is set to be 2π / 3 - 5π / 8. While adapting to the actual environment of the crossheading to arrange the filling pipeline, it avoids the impact of the filling pipeline 1 on the inner wall surface of the roadway or equipment during grouting filling, improving the stability of grouting filling.

[0038] When the inner diameter of the filling pipeline is set to 120 mm, the amount of grouting filling is relatively small at this time. While ensuring the filling amount, it reduces the construction cost and avoids stagnant flow and pipeline blockage. When the inner diameter of the filling pipeline 1 is set to 300 mm, it further avoids stagnant flow and pipeline blockage. And by setting the inner diameter size of the filling pipeline when the dip angle of the coal seam is less than 15°, it avoids excessive water consumption and electricity of the coal gangue used for filling due to too large an inner diameter, and avoids stagnant flow and pipeline blockage due to too small an inner diameter, thereby improving the stability and efficiency of filling.

[0039] At the same time, the number of the filling pipelines 1 can be multiple, and the multiple filling pipelines 1 are arranged at intervals in the crossheading to increase the density of the filling pipelines 1, further improving the filling efficiency.

[0040] Furthermore, when the dip angle of the coal seam 200 is less than 15°, the thickness of the filling pipeline 1 is 4 mm - 8 mm.

[0041] In some other embodiments, when the dip angle range of the coal seam 200 is 15° - 45° and the thickness of the coal seam 200 is greater than 1.2 m, the distance between the filling pipeline 1 and the surface of the coal seam 200 is 50 - 60 cm, which can not only avoid the friction between the filling pipeline 1 and the coal seam 200, but also ensure the density of the filling pipeline 1 while ensuring the transportation and filling efficiency of coal.

[0042] Specifically, when the thickness of the coal seam 200 is greater than 1.2 m, the dip angle of the coal seam 200 ranges from 15° to 45°. To avoid the contact between the uneven parts of the roof of the coal seam and the filling pipeline 1 in the crossheading, which may cause wear of the filling pipeline, and at the same time, due to the dip angle ranging from 15° to 45°, when grouting the filling pipeline 1, the filling pipeline shakes, making it easier for the filling 1 to come into contact with the roof. The distance between the filling pipeline 1 and the surface of the coal seam 200 is 50 - 60 cm, so as to avoid the contact between the filling pipeline 1 and the roof when the filling pipeline swings in the crossheading during grouting filling, and improve the stability and efficiency of filling. The inner diameter of the pipeline is 300 mm - 400 mm, and the radian of the arc section is 5π / 8 - 19π / 18, thereby improving the stability during filling. By controlling the inner diameter of the filling pipeline within the range of the coal dip angle from 15° to 45°, it is possible to avoid excessive water consumption and electricity of the coal gangue used for filling due to too large an inner diameter, and avoid stagnation and pipeline blockage due to too small an inner diameter, thus improving the stability and efficiency of filling.

[0043] The length of the filling pipeline 1 is less than or equal to 1000 m, which is convenient for maintaining and replacing the filling pipeline 1, reducing the time used for maintenance and replacement, and reducing the construction cost during filling.

[0044] The thickness of the filling pipeline 1 is 6 - 10 mm. The wall thickness of the filling pipeline 1 is between 6 mm and 10 mm, which can not only ensure the strength and stability of the pipeline, but also not excessively increase the manufacturing cost.

[0045] For example, during the mining process of a coal mine, the dip angle of the coal seam 200 is about 45°, the coal thickness exceeds 1.2 m, and the conveying speed of the coal gangue is relatively fast, such as more than 8 meters per hour. In the case of a large coal gangue conveying volume, appropriately increasing the inner diameter of the filling pipeline 1 can reduce the resistance during pipeline conveying and avoid pipeline blockage. The inner diameter of the pipeline is between 300 - 400 mm, and the wall thickness of the filling pipeline 1 should be between 6 mm and 10 mm, which can not only ensure the strength and stability of the pipeline, but also not excessively increase the manufacturing cost. The length of the filling pipeline 1 does not exceed 1000 m, so as to ensure the safety, reliability and high efficiency during the coal mine mining and filling process.

[0046] Optionally, the horizontal spacing distance between adjacent filling pipelines 1 is 2 m - 3.5 m. Optionally, the horizontal spacing distance between adjacent filling pipelines 1 is 2.2 m - 3.3 m. Optionally, the horizontal spacing distance between adjacent filling pipelines 1 is 2.9 m - 3 m. Thus, it can be ensured that multiple filling pipelines 1 can evenly fill the area to be filled.

[0047] The measurement and control equipment includes a pressure sensor, a temperature sensor, a humidity sensor, and a flowmeter. The pressure sensor, temperature sensor, humidity sensor, and flowmeter are installed on the filling pipeline 1. The pressure sensor monitors the pressure of the filling material in the filling pipeline 1, the temperature sensor monitors the temperature in the filling pipeline 1, the humidity sensor monitors the humidity in the filling pipeline 1, and the flowmeter monitors the flow rate of the filling material in the filling pipeline 1. The measurement and control equipment of the embodiment of the present utility model realizes the on-line monitoring of the parameters of pressure, temperature, humidity, and flow rate during the filling process, and thus adjusts the parameters of the filling equipment 2 according to the monitoring data and adjusts the filling material, thereby improving the safety, reliability, and operation efficiency of the filling pipeline 1 and ensuring the stability of the filling pipeline 1.

[0048] The following is a specific example to illustrate the role of applying intelligent measurement and control technology in the process of coal gangue filling:

[0049] During the filling process of a large coal mine, the pressure and flow rate of the filling pipeline 1 are monitored and controlled. The specific data is as follows:

[0050] Real-time pressure monitoring: The operating pressure inside the pipeline and possible pressure mutations and abnormal data are monitored in real time through the installed pressure sensor. The maximum pressure value recorded is 10.5 MPa, the minimum pressure value is 3.5 MPa, and the average pressure value is 6.8 MPa.

[0051] Real-time flow rate monitoring: The flow rate and velocity changes of coal gangue inside the pipeline are monitored in real time through the installed flowmeter. The maximum flow rate value recorded is 5.6 m 3 / min, the minimum flow rate value is 0.8 m 3 / min, and the average flow rate value is 2.5 m 3 / min.

[0052] Data analysis and processing: Based on the above real-time monitored data, the operating state of the filling pipeline 1 is obtained through data analysis and processing, the filling state of the pipeline is judged, and the existing problems and risks are identified.

[0053] Real-time feedback and adjustment: According to the above data and analysis results, the intelligent measurement and control system automatically adjusts the flow rate, pressure, temperature, and humidity of coal gangue inside the pipeline. For example, when the pressure is too high, the filling equipment 2 cuts off the input of coal gangue to avoid blockage; when the pressure is too low, the filling equipment 2 adjusts the input speed of coal gangue to ensure the normal operation of the filling pipeline 1.

[0054] The filling pipeline system 100 in the coal seam 200 of the embodiment of the present utility model can improve the filling rate of the filling pipeline 1 in the coal seam 200, achieving a series of goals such as energy conservation, reduction of environmental pollution, and improvement of coal mine mining efficiency.

[0055] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "coupling", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0059] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0060] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. An underground pipeline filling system (100), characterized in that, Including: A filling pipeline (1), which is arranged in the gateway. The orientation of the filling pipeline (1) is the same as the coal seam (200) mining direction. The filling pipeline (1) has an arc section and a straight section; A filling device (2), which is connected to the front end of the filling pipeline (1); And A diversion device (3), which is arranged at the end of the filling pipeline (1); A moving component, which is suitable for transporting the filling device and the filling pipeline to a preset position; Classify the particle size of the coal gangue according to the particle size of the coal gangue, and conduct classified filling of the gaps around the filling pipeline (1). The coal gangue with a larger particle size is used to fill the gaps around the filling pipeline (1), and the coal gangue with a smaller particle size is used to fill the smaller gaps in the gaps; The inclination angle of the coal seam (200) is less than 15°. The thickness of the coal seam (200) is 0.8m - 1.2m. The distance between the filling pipeline (1) and the coal seam (200) in the up and down direction is 20cm - 30cm. The inner diameter of the filling pipeline (1) is 120mm - 300mm. The radian of the arc section is 2π / 3 - 5π / 8. The thickness of the filling pipeline (1) is 4mm - 8mm. The thickness of the filling pipeline (1) is 6mm - 10mm; Or, the inclination angle range of the coal seam (200) is 15° - 45°. The thickness of the coal seam (200) is greater than 1.2m. The distance between the filling pipeline (1) and the surface of the coal seam (200) is 50cm - 60cm. The inner diameter of the pipeline is 300mm - 400mm. The radian of the arc section is 5π / 8 - 19π / 18. The length of the filling pipeline (1) is less than or equal to 1000m.

2. The downhole pipe filling system (100) according to claim 1, wherein, The interval distance between adjacent filling pipelines (1) in the horizontal direction is 2m - 3.5m.

3. The downhole pipe filling system (100) according to claim 1, characterized in that, It further includes a measurement and control device, which includes a pressure sensor, a temperature sensor, a humidity sensor and a flow meter. The pressure sensor, the temperature sensor, the humidity sensor and the flow meter are arranged on the filling pipeline (1).

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