An efficient intelligent fully-mechanized top coal caving test platform and method

Abstract

The application discloses a kind of high-efficiency intelligent fully mechanized caving coal test platform and method, it is related to coal mining technical field, the test platform includes: test box, gangue particle, top coal particle, custom mark point, fully mechanized caving support, primary vibrating screen, secondary vibrating screen, electromagnetic device, gangue recovery weighing device, top coal recovery weighing device and data processing module, gangue recovery weighing device and top coal recovery weighing device are weighed to the gangue particle and top coal particle that two-stage vibrating screen automatically screens out by it, and measurement data is transmitted to data processing module to carry out real-time display;Electromagnetic device automatically absorbs custom mark point, and the number, mass and migration trajectory of custom mark point are transmitted to data processing module to carry out display in real time.The application improves the classification efficiency of various particles and the accuracy of weighing measurement result, and the migration path of top coal particle is monitored in real time by the migration trajectory of custom mark point, which is convenient for analyzing the caving law under different geological conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, in particular to an efficient intelligent fully mechanized caving test platform and method. BACKGROUND

[0002] Coal is the most economical and reliable resource in China's primary energy. The wide distribution and abundant reserves of thick coal seams are the basic occurrence characteristics of China's coal resources. Fully mechanized caving mining of thick and extra-thick coal seams is the direction and important technical approach to realize safe and efficient mining of coal.

[0003] One of the common methods to study the top coal caving law is to conduct fully mechanized caving test in the laboratory. In order to monitor the migration path of the top coal particles in real time, a customized marker point is placed in the top coal particles, and the migration path of the top coal particles is obtained by monitoring the migration trajectory of the customized marker point in real time. However, in the existing coal caving test, the customized marker point is mainly screened by manual screening. In order to calculate the gangue content, the top coal particles and gangue particles are also mainly classified by manual classification, and the mass of the top coal particles and the mass of the gangue particles are weighed, so the intelligence of the test is poor. SUMMARY

[0004] The purpose of the present application is to provide an efficient intelligent fully mechanized caving test platform and method to solve the problems of low efficiency of manual screening of customized marker points, classification of top coal particles and gangue particles, and low accuracy of measurement results caused by manual weighing of top coal particles and gangue particles.

[0005] To achieve the above-mentioned purpose, the present application provides the following scheme:

[0006] An efficient intelligent fully mechanized caving test platform and method, comprising:

[0007] a test box, gangue particles, top coal particles, customized marker points, a fully mechanized support, a primary vibrating screen, a secondary vibrating screen, an electromagnetic device, a gangue recovery weighing device, a top coal recovery weighing device, and a data processing module;

[0008] The fully mechanized support is fixedly arranged at the middle position of the test box, forming an upper cavity and a lower cavity, and the side surface of the lower cavity is provided with a first opening. The primary vibrating screen and the secondary vibrating screen are arranged obliquely in the lower cavity. The top coal particles, the gangue particles and the customized marker points are placed in the upper cavity. The fully mechanized support is provided with a second opening, which is opened or closed according to the coal caving command.

[0009] The top coal particles are located on the fully mechanized support, the gangue particles are located above the top coal particles, and the customized marker points are distributed in the top coal particles in number order, and the customized marker points are used to monitor the migration path of the top coal particles.

[0010] The primary vibrating screen is located below the fully mechanized feeding support, and the primary vibrating screen is used to separate and output the discharged gangue particles;

[0011] The secondary vibrating screen is located below the primary vibrating screen, and the secondary vibrating screen is used to separate and output the released top coal particles;

[0012] The gangue recycling and weighing device is located outside the first opening. The position of the gangue recycling and weighing device is lower than the gangue particle outlet position of the primary vibrating screen. The gangue recycling and weighing device is used to recover and weigh the released gangue particles.

[0013] The top coal recovery and weighing device is located outside the first opening. The position of the top coal recovery and weighing device is lower than the top coal particle outlet position of the secondary vibrating screen. The top coal recovery and weighing device is used to recover and weigh the released top coal particles.

[0014] The electromagnetic device is located between the top coal recovery weighing device and the gangue recovery weighing device, and is used to absorb the released customized marker points;

[0015] The data processing module is connected to the gangue recycling weighing device, the top coal recycling weighing device and the electromagnetic device, respectively, and is used to display the mass of the released gangue particles, the mass of the released top coal particles, the number of the released customized marker point and the movement trajectory of the released customized marker point.

[0016] Optionally, it also includes: a pulverized coal recovery weighing device;

[0017] The pulverized coal recovery and weighing device is located at the bottom of the test chamber and is connected to the data processing module. The pulverized coal recovery and weighing device is used to recover and weigh the pulverized coal that leaks out of the secondary vibrating screen and output the mass of the pulverized coal to the data processing module.

[0018] Optionally, the pulverized coal recovery weighing device has a sealed, detachable base.

[0019] Optionally, the exterior of the customized marker is made of iron, and the interior of the customized marker is equipped with a chip with positioning function. The density of the customized marker is consistent with the density of the top coal particles.

[0020] Optionally, it may also include: an encoding device;

[0021] The coding device is used to number each of the customized marker points before coal discharge and to clear the numbers of the customized marker points after coal discharge is completed; the coal discharge is the process of discharging the gangue particles, the top coal particles and the customized marker points.

[0022] Optionally, the primary vibrating screen is provided with a primary screen aperture, the diameter of which is greater than the maximum particle size of the top coal particles and less than the minimum particle size of the gangue particles; the secondary vibrating screen is provided with a secondary screen aperture, the diameter of which is less than the minimum particle size of the top coal particles.

[0023] Optionally, the data processing module is also used to display the quality of the marker point and the quality of the pulverized coal.

[0024] Optionally, it may also include: a coal feeding control platform;

[0025] The coal discharge control panel is connected to the fully mechanized caving support and the data processing module, respectively, and is used to control the fully mechanized caving support to open or close the second opening, and to control the fully mechanized caving support to terminate coal discharge according to the coal discharge termination command output by the data processing module.

[0026] Optionally, the data processing module is used to set the termination coal mixing rate and calculate the cumulative coal mixing rate. When the termination coal mixing rate is reached, the termination coal discharge command is output to the coal discharge control panel.

[0027] The cumulative coal mixing rate is:

[0028]

[0029] In the formula, m c Measurement data for the top coal recovery weighing device; m r Measurement data for the gangue recycling weighing device; m p To measure the quantity of pulverized coal recovery weighing device.

[0030] To achieve the above objectives, the present invention provides the following solution:

[0031] A highly efficient and intelligent fully mechanized longwall mining coal release test method includes:

[0032] Top coal particles were laid layer by layer on the fully mechanized caving support of the test chamber, and customized marker points were placed at set intervals in numerical order;

[0033] Gangue particles are laid on top of the top coal particles after they have been laid.

[0034] Press the "Open" button on the coal discharge control panel to start the fully mechanized coal discharge support; the coal discharge refers to the process of discharging the gangue particles, the top coal particles, and the customized marker points.

[0035] The discharged gangue particles are separated using a primary vibrating screen and output to a gangue recycling and weighing device.

[0036] The discharged top coal particles are separated using a two-stage vibrating screen and output to a top coal recovery weighing device.

[0037] The customized marker points emitted are extracted using an electromagnetic device;

[0038] The data processing module displays the mass of the released top coal, the mass of the released gangue particles, the number of the released customized marker point, and the movement trajectory of the released customized marker point;

[0039] When the cumulative mixing rate of gangue displayed by the data processing module reaches the termination mixing rate, the data processing module outputs a termination coal discharge command to the coal discharge control panel.

[0040] The coal discharge control panel controls the fully mechanized coal discharge support to close the second opening according to the coal discharge termination command, thereby terminating coal discharge.

[0041] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0042] This invention provides a highly efficient and intelligent fully mechanized longwall mining coal release test platform and method. A gangue recovery and weighing device weighs the gangue particles automatically screened by a primary vibrating screen and transmits the mass data to a data processing module for real-time display. A top coal recovery and weighing device weighs the top coal particles automatically screened by a secondary vibrating screen and transmits the mass data to the data processing module for real-time display. An electromagnetic device attracts customized marker points and transmits information such as the marker point's number, mass, and migration trajectory to the data processing module for real-time display. This invention improves the classification efficiency of customized marker points, gangue particles, and top coal particles by intelligently screening customized marker points and weighing the released top coal particles and gangue particles. Furthermore, the migration trajectory of the customized marker points displayed by the data processing module allows for real-time monitoring of the top coal particle migration path, facilitating the analysis of coal release patterns under different geological conditions. In addition, the use of high-precision gangue and top coal recovery weighing devices significantly improves the accuracy of the weighing measurement results. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the structure of the high-efficiency intelligent fully mechanized longwall mining coal release test platform provided by the present invention.

[0045] Symbol explanation:

[0046] Test chamber—1, gangue particles—2, top coal particles—3, customized marker point—4, fully mechanized caving support—5, support tail beam—51, support shield beam—52, support top beam—53, coal discharge operating platform—6, gangue recovery weighing device—7, primary vibrating screen—8, secondary vibrating screen—9, electromagnetic device—10, top coal recovery weighing device—11, pulverized coal recovery weighing device—12, data processing module—13, coding device—14, first opening—15. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] The purpose of this invention is to provide an efficient and intelligent fully mechanized longwall mining coal release test platform and method, which can improve the efficiency of customized marker points, classification of top coal particles and gangue particles, and the accuracy of weighing measurement results of various particles.

[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] Example 1

[0051] like Figure 1 As shown, the present invention provides a high-efficiency intelligent fully mechanized longwall mining coal discharge test platform, comprising: test chamber 1, gangue particles 2, top coal particles 3, customized marker points 4, longwall support 5, support tail beam 51, support shield beam 52, support top beam 53, coal discharge operating platform 6, gangue recovery weighing device 7, primary vibrating screen 8, secondary vibrating screen 9, electromagnetic device 10, top coal recovery weighing device 11, pulverized coal recovery weighing device 12, data processing module 13, encoding device 14, and first opening 15.

[0052] The fully mechanized caving support 5 is divided into a tail beam 51, a shield beam 52, and a top beam 53. The fully mechanized caving support 5 is fixedly installed in the middle of the test chamber 1, forming an upper cavity and a lower cavity. The lower cavity has a first opening 15 on its side. The primary vibrating screen 8 and the secondary vibrating screen 9 are inclinedly arranged in the lower cavity. The top coal particles 3, the gangue particles 2, and the customized marker points 4 are placed in the upper cavity. The fully mechanized caving support 5 has a second opening (for...). Figure 1 The support tail beam 51 in the middle opens or closes the second opening according to the coal discharge command.

[0053] Furthermore, the primary vibrating screen 8 is located below the fully mechanized feeding support 5, and the primary vibrating screen 8 is used to separate and output the discharged gangue particles 2; the secondary vibrating screen 9 is located below the primary vibrating screen 8, and the secondary vibrating screen 9 is used to separate and output the discharged top coal particles 3.

[0054] Furthermore, the primary vibrating screen 8 is equipped with primary screen holes, the diameter of which is greater than the maximum particle size of the top coal particles 3 and less than the minimum particle size of the gangue particles 2; the secondary vibrating screen 9 is equipped with secondary screen holes, the diameter of which is less than the minimum particle size of the top coal particles 3. These two-stage vibrating screens can separate the mixed top coal particles 3 and gangue particles 2, reducing the workload of manual sorting.

[0055] Furthermore, the top coal particles 3 are located on the fully mechanized caving support 5; the gangue particles 2 are located above the top coal particles 3; the customized marker points 4 are distributed in the top coal particles 3 in numerical order, and the customized marker points 4 are used to monitor the movement path of the top coal particles 3.

[0056] Specifically, the exterior of the customized marker point 4 is made of iron, and the interior of the customized marker point 4 is equipped with a chip with positioning function. The density of the customized marker point 4 is consistent with the density of the top coal particles 3. This allows the electromagnetic device 10 to directly pick up the customized marker point 4 after being energized during the coal discharge process. Alternatively, the data processing module 13 can detect and display the movement trajectory of the customized marker point 4 in real time, and monitor the movement path of the top coal particles 3 in real time by detecting the movement trajectory of the customized marker point 4, thereby analyzing the coal discharge pattern under different geological conditions.

[0057] This embodiment also includes an encoding device 14, which is used to number each of the customized marker points 4 before coal discharge and to clear the numbers of the customized marker points 4 after coal discharge is completed. By numbering each customized marker point 4 through the encoding device 14, the position of each customized marker point 4 in the coal seam can be determined. After coal discharge is completed, the numbers of all customized marker points 4 can be cleared with one click and re-encoded. Here, coal discharge refers to the process of discharging the gangue particles 2, the top coal particles 3, and the customized marker points 4.

[0058] The gangue recycling and weighing device 7 is located outside the first opening 15. The position of the gangue recycling and weighing device 7 is lower than the gangue particle 2 outlet position of the primary vibrating screen 8. The gangue recycling and weighing device 7 is used to recycle and weigh the released gangue particles 2.

[0059] The top coal recovery and weighing device 11 is located outside the first opening 15. The position of the top coal recovery and weighing device 11 is lower than the outlet position of the top coal particles 3 of the secondary vibrating screen 9. The top coal recovery and weighing device 11 is used to recover and weigh the released top coal particles 3.

[0060] The electromagnetic device 10 is located between the top coal recovery weighing device 11 and the gangue recovery weighing device 7, and is used to absorb the released customized marker point 4.

[0061] The data processing module 13 is connected to the gangue recycling weighing device 7, the top coal recycling weighing device 11 and the electromagnetic device 10 respectively, and is used to display the mass of the released gangue particles 2, the mass of the released top coal particles 3, the number of the released customized marker point 4, the mass of the released customized marker point 4 and the movement trajectory of the released customized marker point 4.

[0062] During the coal discharge process, some of the top coal particles 3 may break, producing small pieces or pulverized coal falling off. After the coal discharge is completed, the pulverized coal will gradually fall to the bottom of the test platform. At this time, a pulverized coal recovery and weighing device 12 can be set up. The pulverized coal recovery and weighing device 12 is set at the bottom of the test chamber 1 and connected to the data processing module 13. The pulverized coal recovery and weighing device 12 is used to recover and weigh the pulverized coal that leaks out of the secondary vibrating screen 9 and output the mass of the pulverized coal to the data processing module 13. The data processing module 13 displays the mass of the pulverized coal.

[0063] The pulverized coal recovery weighing device 12 is a sealed, detachable base. It can measure the quality of pulverized coal during the coal discharge process, thereby improving the accuracy of the test. After the coal discharge is completed, the pulverized coal can be taken out and reused.

[0064] Furthermore, this embodiment also includes a coal discharge control platform 6, which is connected to the fully mechanized caving support 5 and the data processing module 13, respectively, for controlling the fully mechanized caving support 5 to open or close the second opening, and controlling the fully mechanized caving support 5 to terminate coal discharge according to the coal discharge termination command output by the data processing module 13.

[0065] Specifically, the "open" button on the coal discharge control panel 6 controls the opening of the second opening on the fully mechanized caving support 5; the "close" button on the coal discharge control panel 6 controls the closing of the second opening on the fully mechanized caving support 5; the "emergency" button on the coal discharge control panel 6 controls the emergency closing of the second opening on the fully mechanized caving support 5; and the "power" button on the coal discharge control panel 6 is the power button for the coal discharge control panel 6.

[0066] Furthermore, the data processing module 13 is also used to set the termination coal mixing rate and calculate the cumulative coal mixing rate. When the termination coal mixing rate is reached, the termination coal discharge command is output to the coal discharge operation platform 6.

[0067] The cumulative coal mixing rate is:

[0068]

[0069] In the formula, m c Measurement data for the top coal recovery weighing device; m r Measurement data for the gangue recycling weighing device; m p The quantity is measured for the coal recovery weighing device; all measurement data can be in grams.

[0070] Furthermore, the top coal recovery weighing device 11, the gangue recovery weighing device 7, and the pulverized coal recovery weighing device 12 are all equipped with high-precision electronic scales, which can display the released coal and gangue quality in real time in the data processing module 13.

[0071] Example 2

[0072] This invention provides a highly efficient and intelligent fully mechanized longwall mining coal release test method, comprising:

[0073] Top coal particles 3 are laid layer by layer on the fully mechanized support 5 of the test chamber 1, and customized marker points 4 are placed at set intervals in numerical order.

[0074] Gangue particles 2 are laid on top of the top coal particles 3 after they have been laid.

[0075] Press the "Open" button on the coal discharge control panel 6 to start the coal discharge from the fully mechanized coal discharge support 5; the coal discharge is the process of discharging the gangue particles 2, the top coal particles 3, and the customized marker points 4.

[0076] The discharged gangue particles 2 are separated using a primary vibrating screen 8 and output to the gangue recycling weighing device 7.

[0077] The top coal particles 3 released are separated by a secondary vibrating screen 9 and output to the top coal recovery weighing device 11.

[0078] The customized marker point 4 is extracted using an electromagnetic device 10.

[0079] The data processing module 13 displays the mass of the released top coal, the mass of the released gangue particles 2, the number of the released customized marker point 4, and the movement trajectory of the released customized marker point 4.

[0080] When the cumulative coal mixing rate displayed by the data processing module 13 reaches the termination coal mixing rate, the data processing module 13 outputs a termination coal discharge command to the coal discharge control panel 6.

[0081] The coal discharge control platform 6 controls the fully mechanized coal discharge support 5 to close the second opening according to the coal discharge termination command, thereby terminating coal discharge.

[0082] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0083] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the structure, method, and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A high-efficiency intelligent fully mechanized longwall mining coal release test platform, characterized in that, include: Test chamber, gangue particles, top coal particles, customized marker points, fully mechanized mining support, primary vibrating screen, secondary vibrating screen, electromagnetic device, gangue recovery weighing device, top coal recovery weighing device and data processing module; The fully mechanized caving support is fixedly installed in the middle of the test chamber, forming an upper cavity and a lower cavity. The lower cavity has a first opening on its side. The primary vibrating screen and the secondary vibrating screen are inclinedly installed in the lower cavity. The top coal particles, the gangue particles, and the customized marker points are placed in the upper cavity. The fully mechanized caving support has a second opening, which is opened or closed according to the coal discharge command. The top coal particles are located on the fully mechanized caving support; the gangue particles are located above the top coal particles; the customized markers are distributed in the top coal particles in numerical order, and the customized markers are used to monitor the movement path of the top coal particles; The primary vibrating screen is located below the fully mechanized feeding support, and the primary vibrating screen is used to separate and output the discharged gangue particles; The secondary vibrating screen is located below the primary vibrating screen, and the secondary vibrating screen is used to separate and output the released top coal particles; The gangue recycling and weighing device is located outside the first opening. The position of the gangue recycling and weighing device is lower than the gangue particle outlet position of the primary vibrating screen. The gangue recycling and weighing device is used to recover and weigh the released gangue particles. The top coal recovery and weighing device is located outside the first opening. The position of the top coal recovery and weighing device is lower than the top coal particle outlet position of the secondary vibrating screen. The top coal recovery and weighing device is used to recover and weigh the released top coal particles. The electromagnetic device is located between the top coal recovery weighing device and the gangue recovery weighing device, and is used to absorb the released customized marker points; The data processing module is connected to the gangue recycling weighing device, the top coal recycling weighing device and the electromagnetic device, respectively, and is used to display the mass of the released gangue particles, the mass of the released top coal particles, the number of the released customized marker point and the movement trajectory of the released customized marker point.

2. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 1, characterized in that, Also includes: Pulverized coal recovery and weighing device; The pulverized coal recovery and weighing device is located at the bottom of the test chamber and is connected to the data processing module. The pulverized coal recovery and weighing device is used to recover and weigh the pulverized coal that leaks out of the secondary vibrating screen and output the mass of the pulverized coal to the data processing module.

3. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 2, characterized in that, The pulverized coal recovery weighing device has a sealed, detachable base.

4. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 1, characterized in that, The exterior of the customized marker is made of iron, and the interior of the customized marker is equipped with a chip with positioning function. The density of the customized marker is consistent with the density of the top coal particles.

5. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 4, characterized in that, It also includes: encoding devices; The coding device is used to number each of the customized marker points before coal discharge and to clear the numbers of the customized marker points after coal discharge is completed; the coal discharge is the process of discharging the gangue particles, the top coal particles and the customized marker points.

6. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 1, characterized in that, The primary vibrating screen is provided with a primary screen hole, the diameter of which is greater than the maximum particle size of the top coal particles and less than the minimum particle size of the gangue particles; the secondary vibrating screen is provided with a secondary screen hole, the diameter of which is less than the minimum particle size of the top coal particles.

7. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 3 or 5, characterized in that, The data processing module is also used to display the quality of the pulverized coal or the quality of the marker point.

8. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 7, characterized in that, Also includes: Coal feeding control platform; The coal discharge control panel is connected to the fully mechanized caving support and the data processing module, respectively, and is used to control the fully mechanized caving support to open or close the second opening, and to control the fully mechanized caving support to terminate coal discharge according to the coal discharge termination command output by the data processing module.

9. The high-efficiency intelligent fully mechanized longwall mining coal release test platform according to claim 8, characterized in that, The data processing module is used to set the termination coal mixing rate and calculate the cumulative coal mixing rate. When the termination coal mixing rate is reached, the termination coal discharge command is output to the coal discharge control panel. The cumulative coal mixing rate is: ， In the formula, m c Measurement data for the top coal recovery weighing device; m r Measurement data for the gangue recycling weighing device; m p To measure the quantity of pulverized coal recovery weighing device.

10. A method for testing coal release in high-efficiency intelligent fully mechanized longwall mining, applicable to the high-efficiency intelligent fully mechanized longwall mining coal release test platform as described in any one of claims 1-9, characterized in that, include: Top coal particles were laid layer by layer on the fully mechanized caving support of the test chamber, and customized marker points were placed at set intervals in numerical order; Gangue particles are laid on top of the top coal particles after they have been laid. Press the "Open" button on the coal discharge control panel to start the fully mechanized coal discharge support; the coal discharge refers to the process of discharging the gangue particles, the top coal particles, and the customized marker points. The discharged gangue particles are separated using a primary vibrating screen and output to a gangue recycling and weighing device. The discharged top coal particles are separated using a two-stage vibrating screen and output to a top coal recovery weighing device. The customized marker points emitted are extracted using an electromagnetic device; The data processing module displays the mass of the released top coal, the mass of the released gangue particles, the number of the released customized marker point, and the movement trajectory of the released customized marker point; When the cumulative mixing rate of gangue displayed by the data processing module reaches the termination mixing rate, the data processing module outputs a termination coal discharge command to the coal discharge control panel. The coal discharge control panel controls the fully mechanized coal discharge support to close the second opening according to the coal discharge termination command, thereby terminating coal discharge.

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