A coal mine information integrated monitoring system and method

Abstract

The present invention relates to the technical field of coal mine data analysis, and in particular to a coal mine information integrated monitoring system and method, comprising a data acquisition module, a data processing module, a support information analysis module, a push slide information analysis module and an intelligent control module; wherein the support information analysis module determines the support pressure average value and the support pressure range at each moment, compares the support pressure range at the same moment with the support pressure reference value in each direction and determines the support pressure type in the corresponding direction, determines the current support pressure average value state according to the current support pressure average value and the historical pressure preset value, and determines whether there is a collapse tendency of the roof in combination with the support pressure type and the current support pressure average value state; the push slide information analysis module determines the support state of a single hydraulic push slide to determine whether to adjust the position of the single hydraulic push slide; the intelligent control module determines the coal mining adjustment strategy according to the collapse tendency and the support state of the hydraulic push slide.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine data analysis, and in particular to a coal mine information integrated monitoring system and method. Background Art

[0002] The coal mine information integrated monitoring system integrates modern information technology, Internet of Things, big data, cloud computing and other cutting-edge technologies. It aims to achieve real-time monitoring, early warning and management of the entire coal mine production process through digital and intelligent means. It not only covers monitoring and surveillance functions such as environmental monitoring, personnel positioning, equipment monitoring, industrial video, etc., but also integrates diversified functional modules such as safety management system, production management system, business management system and decision support system, forming a comprehensive, multi-level and three-dimensional comprehensive management platform.

[0003] Chinese patent publication number CN111335952A discloses a system and working method that can be independently deployed in a rock and soil borehole, monitor and sense the environment in the borehole, and feed back data to the mine safety system to perform remote rock and soil monitoring and early warning. The system is characterized by comprising a data acquisition terminal, a data receiving system, an uphole monitoring platform, and an alarm system; the data acquisition terminal is distributed in the rock mass, and data transmission is formed through the wireless signal transmitter and data receiving system of the data acquisition terminal. The data receiving system feeds back the received data to the uphole monitoring platform, and the uphole monitoring platform controls the alarm system to issue early warning prompts through the data analysis structure. It is independently installed in combination with the drill rod, is easy to use, collects and feeds back the data in the borehole, and predicts the rock formation. It can be seen that the invention has the following problems:

[0004] The invention does not determine abnormal conditions during coal mining based on real-time monitored push-and-drop pressure data and support pressure data. Summary of the invention

[0005] To this end, the present invention provides a coal mine information comprehensive monitoring system and method to overcome the problem in the prior art that abnormal conditions during coal mining are not determined based on real-time monitored push-slide pressure data and support pressure data, so as to improve production safety during coal mining and optimize the coal mining operation process, thereby achieving dual guarantees of efficiency and safety.

[0006] To achieve the above objectives, on the one hand, the present invention provides a coal mine information integrated monitoring system, comprising:

[0007] The data acquisition module includes a push-slide pressure sensing unit for collecting the push-slide pressure data between each hydraulic pusher and the contact surface of the slide and a support pressure sensing unit for collecting the support pressure data between each detection point of the hydraulic support and the top plate;

[0008] A data processing module connected to the data acquisition module, for determining a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions, and determining a real-time push-and-slide pressure reference value according to each push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit;

[0009] A support information analysis module, which is connected to the data processing module, and is used to determine the support pressure reference value in each direction at the same time according to the support pressure time sequence diagrams in each of the different directions to determine the support pressure average value and support pressure range at the corresponding time, compare the support pressure range at the same time with the support pressure reference value in each direction and determine the support pressure type in the corresponding direction according to the comparison result, compare the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, and determine whether the roof has a tendency to collapse in combination with the determination result of the support pressure type and the current support pressure average value state;

[0010] A push-slide information analysis module, which is connected to the data processing module, and is used to determine the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide;

[0011] An intelligent control module, which is connected to the support information analysis module and the push-slide information analysis module respectively, and is used to determine the coal mining adjustment strategy according to the determination result of the collapse tendency and the determination result of the support state of the hydraulic push-slide device;

[0012] The coal mining adjustment strategy includes reducing the coal mining forward speed of the coal mining machine, increasing the supporting force of the hydraulic support on the roof, and enhancing the coordination between the hydraulic pusher and the coal mining machine in an invalid supporting state.

[0013] Furthermore, the support pressure sensing unit determines the number of support pressure sensors and the position of each support pressure sensor according to the contact area between the hydraulic support and the top plate.

[0014] Furthermore, the data processing module determines a real-time push-and-slide pressure reference value according to an average value and a degree of deviation of each of the real-time push-and-slide pressure data.

[0015] Furthermore, the support information analysis module determines the support pressure range at the corresponding moment according to the support pressure reference values ​​in each direction at any moment, and the support pressure range P is calculated according to the following formula:

[0016] P0-ΔP≤P≤P0+ΔP, , ,

[0017] Wherein, P is the support pressure range, n is the number of directions, Pi is the support pressure reference value in the i-th direction, and P0 is the average support pressure.

[0018] Furthermore, the support information analysis module compares the support pressure range at the same time with the support pressure reference value in each direction and determines the support pressure type in the corresponding direction according to the comparison result, wherein:

[0019] If the support pressure reference value in a single direction is within the support pressure range, the support pressure type in this direction is determined to be normal support pressure;

[0020] If the support pressure reference value in a single direction is not within the support pressure range, the support pressure type in this direction is determined to be abnormal support pressure.

[0021] Furthermore, the support information analysis module compares the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, including:

[0022] If the current support pressure average value is greater than the historical pressure preset value, the current support pressure average value state is determined to be an abnormal state;

[0023] If the current support pressure average value is less than or equal to the historical pressure preset value, the current support pressure average value state is determined to be normal;

[0024] Among them, the historical pressure preset value is 1.2 times the historical pressure standard value, and the historical pressure standard value is the median of the historical support pressure average value.

[0025] Furthermore, the support information analysis module determines whether the roof has a tendency to collapse by combining the determination result of the support pressure type with whether the current average state of the support pressure satisfies the collapse tendency judgment condition, including:

[0026] If the determination result of the support pressure type and the current average state of the support pressure meet the collapse tendency determination condition, it is determined that the roof has a collapse tendency;

[0027] If the determination result of the support pressure type and the current support pressure average value state do not meet the collapse tendency determination condition, it is determined that the roof has no collapse tendency;

[0028] The collapse tendency judgment condition is that the support pressure type is abnormal support pressure and the state of the support pressure average value is abnormal.

[0029] Further, the push-slide information analysis module determines the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide, including:

[0030] If a single push slide pressure data is less than the push slide pressure reference value, it is determined that the support state of the slide is an invalid support state, and it is determined to adjust the position of the slide so that the hydraulic push slide is close to the slide;

[0031] If a single push-slide pressure data is greater than or equal to the push-slide pressure reference value, it is determined that the support state of the slide is an effective support state, and it is determined not to adjust the position of the hydraulic push-slide.

[0032] Furthermore, the intelligent control module determines the coal mining adjustment strategy according to the judgment result of the collapse tendency and the judgment result of the support state of the hydraulic pusher, wherein:

[0033] If the roof has a tendency to collapse and the hydraulic pusher is in an invalid support state, it is determined that the coal mining adjustment strategy is to reduce the coal mining forward speed of the coal mining machine;

[0034] If the roof has a tendency to collapse and the hydraulic pushers are in an effective supporting state, it is determined that the coal mining adjustment strategy is to increase the supporting force of the hydraulic support on the roof;

[0035] If the roof has no tendency to collapse and the hydraulic pusher is in an invalid support state, it is determined that the coal mining adjustment strategy is to enhance the coordination between the hydraulic pusher and the coal mining machine in the invalid support state.

[0036] On the other hand, the present invention also provides a coal mine information comprehensive monitoring method, comprising:

[0037] Obtaining a number of push-slide pressure data and a number of support pressure data;

[0038] Determine a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions, and determine a real-time push-and-slide pressure reference value according to each push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit;

[0039] Determine the support pressure reference value in each direction at the same time according to the support pressure time sequence diagrams in different directions to determine the support pressure average value and support pressure range at the corresponding time;

[0040] Comparing the support pressure range at the same time with the support pressure reference value in each direction and determining the support pressure type in the corresponding direction according to the comparison result;

[0041] Compare the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state;

[0042] Determine whether the roof has a tendency to collapse by combining the determination result of the support pressure type with the current average state of the support pressure;

[0043] Determine the support state of a single hydraulic pusher according to the single pusher pressure data and the pusher pressure reference value to determine whether to adjust the position of the single hydraulic pusher;

[0044] The coal mining adjustment strategy is determined based on the results of the collapse tendency and the support status of the hydraulic pusher.

[0045] Compared with the prior art, the beneficial effect of the present invention lies in that the coal mine information comprehensive monitoring system and method provided by the present invention realizes real-time monitoring and analysis of the pushing pressure of the contact surface between the hydraulic pusher and the scraper conveyor, and the supporting pressure between the hydraulic support and the roof during coal mining by integrating multiple modules. The system evaluates the corresponding supporting pressure type by drawing a time series diagram of the supporting pressure in each direction and promptly discovers the collapse tendency of the roof, thereby effectively preventing safety accidents. At the same time, by intelligently analyzing the pushing pressure data, the layout and coordination of the hydraulic pusher are optimized to ensure the efficient conduct of coal mining operations. The system improves the safety, intelligence level and comprehensive benefits of coal mine production.

[0046] Furthermore, by comparing the support pressure reference values ​​in all directions at the same moment with their support pressure ranges, the data processing module can accurately distinguish between normal support pressure and abnormal support pressure. This fine-grained classification not only improves the accuracy of data analysis, but also provides a reliable basis for subsequent safety assessments and strategy adjustments. By using historical pressure preset values ​​(based on the median of historical pressure standard values ​​and increased by a certain percentage) as the evaluation benchmark, the data processing module can objectively and scientifically judge the status of the current average support pressure (normal or abnormal). This evaluation method takes into account both the representativeness of historical data and the safety margin in actual production.

[0047] Furthermore, the data processing module combines the determination result of the support pressure type with the current average support pressure status, and the system can accurately determine whether the roof has a tendency to collapse; when both meet abnormal conditions, the system immediately issues an early warning, which buys valuable time for taking emergency measures and effectively reduces the risk of roof accidents; through automated data processing and analysis processes, the system reduces the possibility of human intervention and misjudgment, and improves safety in the production process; the real-time and accurate pressure data and status assessment results provided by the system provide powerful decision-making support for production managers, who can adjust coal mining strategies and optimize resource allocation in a timely manner based on the information fed back by the system, thereby achieving a dual increase in production efficiency and economic benefits.

[0048] Furthermore, the push-slide information analysis module realizes an intelligent assessment of the support status of the hydraulic push-slide by accurately comparing the single push-slide pressure data with the reference value: the module can not only quickly identify the slide in an invalid support state and immediately issue adjustment instructions to make the hydraulic push-slide move closer to enhance the support effect; it also ensures that the position of the slide in an effective support state remains stable, avoiding unnecessary adjustments.

[0049] Furthermore, the intelligent control module achieves refined control of the coal mining process through comprehensive collapse tendency judgment and hydraulic pusher support status analysis: it not only responds quickly to the risk of roof collapse, but also effectively prevents safety accidents by reducing the forward speed of the coal mining machine and issuing warnings; it can also accurately adjust the support force of the hydraulic support to ensure the stability of the roof when it is confirmed that the hydraulic pusher support is effective but there are still hidden dangers in the roof; in the case of a safe roof but insufficient support, the module optimizes the coordination between the hydraulic pusher and the coal mining machine to ensure support efficiency. This series of intelligent adjustment strategies not only improves production safety, but also optimizes the coal mining operation process, achieving dual guarantees of efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a connection diagram of the coal mine information integrated monitoring system according to an embodiment of the present invention;

[0051] Figure 2 This is a step diagram of the coal mine information comprehensive monitoring method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0054] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] See also Figure 1 As shown, it is a connection diagram of a coal mine information comprehensive monitoring system according to an embodiment of the present invention. An embodiment of the present invention provides a coal mine information comprehensive monitoring system, including:

[0057] The data acquisition module includes a push-slide pressure sensing unit for collecting the push-slide pressure data between the contact surface of each hydraulic pusher and the chute (i.e., the scraper conveyor) and a support pressure sensing unit for collecting the support pressure data between each detection point of the hydraulic support and the top plate;

[0058] A data processing module connected to the data acquisition module, for determining a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions, and determining a real-time push-and-slide pressure reference value according to each push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit;

[0059] A support information analysis module, which is connected to the data processing module, and is used to determine the support pressure reference value in each direction at the same time according to the support pressure time sequence diagrams in each of the different directions to determine the support pressure average value and support pressure range at the corresponding time, compare the support pressure range at the same time with the support pressure reference value in each direction and determine the support pressure type in the corresponding direction according to the comparison result, compare the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, and determine whether the roof has a tendency to collapse in combination with the determination result of the support pressure type and the current support pressure average value state;

[0060] A push-slide information analysis module, which is connected to the data processing module, and is used to determine the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide;

[0061] An intelligent control module, which is connected to the support information analysis module and the push-slide information analysis module respectively, and is used to determine the coal mining adjustment strategy according to the determination result of the collapse tendency and the determination result of the support state of the hydraulic push-slide device;

[0062] The coal mining adjustment strategy includes reducing the coal mining forward speed of the coal mining machine, increasing the supporting force of the hydraulic support on the roof, and enhancing the coordination between the hydraulic pusher and the coal mining machine in an invalid supporting state.

[0063] It is understandable that a chute refers to a device used to transport coal in coal mining, usually a scraper conveyor, which is a continuous transportation device that transports bulk materials in a closed giant cross-section shell with the help of a moving scraper chain; because the scraper chain is completely buried in the material when transporting the material, it is also called a scraper. Scraper conveyors (chutes) are crucial in the coal mining process. They are usually installed on the coal mining face and used in conjunction with coal mining machines, hydraulic supports and other equipment. After the coal mining machine digs the coal from the coal seam, the scraper conveyor is responsible for transporting the coal to the other end of the working face, and then transporting it to the main transportation system underground through equipment such as transfer machines, ultimately realizing the transportation of coal from underground to the ground.

[0064] It is understandable that the support information analysis module can timely discover the changing trend of the roof support pressure by analyzing the support pressure time series diagram, and effectively predict whether the roof has a tendency to collapse by combining the comparison of the current support pressure average value with the historical preset value and the determination of the support pressure type; this early warning mechanism can significantly reduce the risk of roof accidents and improve the safety of coal mine production. The push-slide information analysis module evaluates the support status of the hydraulic pusher according to the push-slide pressure data, and adjusts the position of the hydraulic pusher in time to ensure its effective coordination with the coal mining machine. This system realizes intelligent monitoring and decision support of the coal mining process through the intelligent control module, and can automatically formulate and adjust the coal mining adjustment strategy based on real-time data and analysis results, reduce human intervention, and improve the accuracy and timeliness of decision-making.

[0065] Specifically, the support pressure sensing unit determines the number of support pressure sensors and the position of each support pressure sensor according to the contact area and contact shape between the hydraulic support and the top plate.

[0066] In implementation, the steps of determining the number of support pressure sensors are as follows: (1) determining the geometric center point of the support pressure sensing unit according to the contact shape between the hydraulic support and the top plate as the position of the first support pressure sensor; (2) determining the length and width of the contact surface according to the contact area and contact shape between the hydraulic support and the top plate; (3) determining a preset number of support pressure directions (generally, 4≤preset number≤20; the larger the preset number, the more support pressure directions can be determined and the more accurate the collapse tendency, but if the preset number is too large, the amount of data collection and analysis may increase, resulting in a waste of resources and thus reducing work efficiency; preferably, the preset number = 8), wherein In the embodiment, the angles between each supporting pressure direction and the adjacent supporting pressure direction are equal (a single supporting pressure direction starts from the first supporting pressure sensor); (4) determining the length of each supporting pressure direction on the contact surface; (5) determining the number of supporting pressure sensors in each supporting pressure direction according to the supporting pressure direction with the shortest length (determined according to the shortest length ÷ preset distance, 10 cm ≤ preset distance ≤ 50 cm, preferably the preset distance is 40 cm, and the principle of rounding down is adopted when calculating the number of supporting pressure sensors in each supporting pressure direction); (6) evenly arranging a number of supporting pressure sensors (the number calculated according to (5)) in each supporting pressure direction.

[0067] Specifically, the data processing module determines the support pressure time series diagram in a single direction according to the average value of a plurality of support pressure data in the single direction at each moment.

[0068] It can be understood that the horizontal axis of the support pressure timing diagram in a single direction is time, and the vertical axis is the average value of a number of support pressure data in this direction.

[0069] Specifically, the data processing module determines the real-time push-and-slide pressure reference value according to the average value and deviation of each of the real-time push-and-slide pressure data.

[0070] In practice, the calculation formula of the push-slide pressure reference value A is: ;

[0071] in, , , where Aj is the jth pushing pressure data between the jth hydraulic pusher and the contact surface of the slide, m is the number of hydraulic pushers, A0 is the average value of each pushing pressure data, and ΔA is the deviation of each pushing pressure data.

[0072] Specifically, the support information analysis module determines the support pressure range at the corresponding moment according to the support pressure reference values ​​in each direction at any moment, and the support pressure range P is calculated according to the following formula:

[0073] P0-ΔP≤P≤P0+ΔP, , ,

[0074] Wherein, P is the support pressure range, n is the number of directions, Pi is the support pressure reference value in the i-th direction, and P0 is the average support pressure.

[0075] Specifically, the support information analysis module compares the support pressure range at the same time with the support pressure reference value in each direction and determines the support pressure type in the corresponding direction according to the comparison result, wherein:

[0076] If the support pressure reference value in a single direction is within the support pressure range (i.e., P0-ΔP≤support pressure reference value in a single direction≤P0+ΔP), the support pressure type in this direction is determined to be normal support pressure;

[0077] If the support pressure reference value in a single direction is not within the support pressure range (ie, the support pressure reference value in a single direction>P0+ΔP or the support pressure reference value in a single direction<P0-ΔP), the support pressure type in this direction is determined to be abnormal support pressure.

[0078] It can be understood that by comparing the support pressure reference values ​​in each direction at the same moment with their support pressure ranges, the system can accurately distinguish between normal support pressure and abnormal support pressure: this fine-grained classification not only improves the accuracy of data analysis, but also provides a reliable basis for subsequent safety assessments and strategy adjustments.

[0079] Specifically, the support information analysis module compares the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, including:

[0080] If the current support pressure average value is greater than the historical pressure preset value, the current support pressure average value state is determined to be an abnormal state;

[0081] If the current support pressure average value is less than or equal to the historical pressure preset value, the current support pressure average value state is determined to be normal;

[0082] Among them, the historical pressure preset value is 1.2 times the historical pressure standard value, and the historical pressure standard value is the median of the historical support pressure average value.

[0083] It is understandable that by using the historical pressure preset value (based on the median of the historical pressure standard value and increased by a certain percentage) as the evaluation benchmark, the data processing module can objectively and scientifically judge the status of the current support pressure average value (normal or abnormal); this evaluation method takes into account both the representativeness of historical data and the safety margin in actual production.

[0084] It can be understood that the real-time support pressure average value can be determined based on the support pressure time series diagram, and the median of the historical support pressure average values ​​can be further determined.

[0085] Specifically, the support information analysis module determines whether the roof has a collapse tendency by combining the determination result of the support pressure type with whether the current average state of the support pressure satisfies the collapse tendency judgment condition, including:

[0086] If the determination result of the support pressure type and the current average state of the support pressure meet the collapse tendency determination condition, it is determined that the roof has a collapse tendency;

[0087] If the determination result of the support pressure type and the current support pressure average value state do not meet the collapse tendency determination condition, it is determined that the roof has no collapse tendency;

[0088] The collapse tendency judgment condition is that the support pressure type is abnormal support pressure and the state of the support pressure average value is abnormal.

[0089] It can be understood that, combining the judgment result of the support pressure type with the current average support pressure status, the system can accurately determine whether the roof has a tendency to collapse; when both meet abnormal conditions, the system immediately issues an early warning, which buys valuable time for taking emergency measures and effectively reduces the risk of roof accidents; through automated data processing and analysis processes, the system reduces the possibility of human intervention and misjudgment, and improves safety in the production process; the real-time and accurate pressure data and status assessment results provided by the system provide strong decision-making support for production managers, who can adjust coal mining strategies and optimize resource allocation in a timely manner based on the information fed back by the system, thereby achieving a dual increase in production efficiency and economic benefits.

[0090] Specifically, the push-slide information analysis module determines the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide, including:

[0091] If a single push slide pressure data is less than the push slide pressure reference value, it is determined that the support state of the slide is an invalid support state, and it is determined to adjust the position of the slide so that the hydraulic push slide is close to the slide;

[0092] If a single push-slide pressure data is greater than or equal to the push-slide pressure reference value, it is determined that the support state of the slide is an effective support state, and it is determined not to adjust the position of the hydraulic push-slide.

[0093] In implementation, if there are multiple push-slide pressure data that are all smaller than the push-slide pressure reference value, the corresponding hydraulic pushers are all moved toward the direction close to the slide until they are greater than or equal to the push-slide pressure reference value.

[0094] It can be understood that the push-slide information analysis module realizes an intelligent assessment of the support status of the hydraulic push-slide by accurately comparing the single push-slide pressure data with the reference value: the module can not only quickly identify the slide in an invalid support state and immediately issue adjustment instructions to make the hydraulic push-slide closer to enhance the support effect; it also ensures that the position of the slide in an effective support state remains stable, avoiding unnecessary adjustments.

[0095] Specifically, the intelligent control module determines the coal mining adjustment strategy according to the judgment results of the collapse tendency and the support state of the hydraulic pusher, wherein:

[0096] If the roof has a tendency to collapse and the hydraulic pusher is in an invalid support state, it is judged that the reason is that the coal mining forward speed of the coal mining machine (the coal mining machine working face advancement speed) is too large, resulting in the hydraulic support and the hydraulic flow pusher failing to synchronize with the coal mining machine, resulting in the collected push pressure data and support pressure data being inaccurate. Therefore, it is determined that the coal mining adjustment strategy is to reduce the coal mining forward speed of the coal mining machine (generally to 0.7 to 0.95 times the initial coal mining forward speed, preferably to 0.9 times the initial coal mining forward speed), and send a warning signal to the staff;

[0097] It is understandable that when the coal mining machine advances too fast, it may cause uneven distribution of roof pressure, especially when the roof and coal wall are broken. Too fast advancement speed can easily cause the roof to separate and break, thereby increasing the risk of mine roof collapse. Changes in the advancement speed of the coal mining machine working face will directly affect the distribution of advance stress. When the working face advances too fast, the advance stress peak will approach the coal wall of the working face, forming a stress concentration area, which is easy to cause dynamic disasters such as coal and gas, and then induce safety accidents (including mine roof collapse).

[0098] It is understandable that if the coal mining machine advances too fast, the hydraulic pusher may be subjected to unstable roof pressure when supporting the chute, thus affecting its supporting effect. The uneven distribution and sudden changes of roof pressure may make it difficult for the hydraulic pusher to maintain a stable supporting state. Secondly, too fast advancement speed may also cause the hydraulic pusher and other equipment to be subjected to greater impact and wear under frequent working conditions, thereby increasing the risk of equipment failure. Once the hydraulic pusher fails, it will directly affect its supporting effect on the chute.

[0099] Therefore, when the roof has a tendency to collapse and the hydraulic pushers are in an invalid supporting state, it may be due to the excessive speed of the coal mining machine moving forward, which will indeed cause signs of collapse in the mine roof and may affect the supporting effect of each hydraulic pusher on the chute; in order to ensure the safety and efficiency of coal mine production, the advancement speed of the coal mining machine should be reasonably controlled to avoid the adverse effects caused by excessive advancement. At the same time, the roof management and maintenance of equipment such as hydraulic pushers should be strengthened to ensure their normal operation and support effect;

[0100] If the roof has a tendency to collapse and the hydraulic pushers are in an effective supporting state, it may be caused by the inclination (non-horizontal) of the contact surface between the hydraulic support and the roof. Therefore, it is determined that the coal mining adjustment strategy is to increase the support force of the hydraulic support on the roof in a specific direction (the direction in which the support pressure reference value is not within the support pressure range);

[0101] If the roof has no tendency to collapse and the hydraulic pushers are in an invalid support state, it may be that individual hydraulic pushers fail to follow the movement of the chute in time, resulting in their failure to effectively support the chute. Therefore, it is determined that the coal mining adjustment strategy is to enhance the coordination between the hydraulic pushers in the invalid support state and the coal mining machine.

[0102] It is understandable that the intelligent control module achieves fine control of the coal mining process through comprehensive collapse tendency judgment and hydraulic pusher support status analysis: it not only responds quickly to the risk of roof collapse, but also effectively prevents safety accidents by reducing the forward speed of the coal mining machine and issuing warnings; it can also accurately adjust the support force of the hydraulic support to ensure the stability of the roof when it is confirmed that the hydraulic pusher support is effective but there are still hidden dangers in the roof; in the case of a safe roof but insufficient support, the module optimizes the coordination between the hydraulic pusher and the coal mining machine to ensure support efficiency. This series of intelligent adjustment strategies not only improves production safety, but also optimizes the coal mining operation process, achieving dual guarantees of efficiency and safety.

[0103] See also Figure 2 As shown, it is a step diagram of the coal mine information comprehensive monitoring method according to an embodiment of the present invention. On the other hand, the present invention also provides a coal mine information comprehensive monitoring method, comprising:

[0104] Step S1, obtaining a plurality of push-slide pressure data and a plurality of support pressure data;

[0105] Step S2, determining the result of the collapse tendency and the result of the support state of the hydraulic push slide, includes step S21 and step S22, wherein step S21 includes steps S211 to S215, and step S22 includes steps S221 to S222.

[0106] Step S211, determining a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions;

[0107] Step S212, determining the support pressure reference value in each direction at the same moment according to the support pressure time sequence diagrams in different directions to determine the support pressure average value and support pressure range at the corresponding moment;

[0108] Step S213, comparing the support pressure range at the same time with the support pressure reference value in each direction and determining the support pressure type in the corresponding direction according to the comparison result;

[0109] Step S214, comparing the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state;

[0110] Step S215, combining the determination result of the support pressure type with the current average support pressure state to determine whether the roof has a tendency to collapse;

[0111] Step S221, determining a real-time push-and-slide pressure reference value according to each of the push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit;

[0112] Step S222, determining the support state of a single hydraulic pusher according to the single pusher pressure data and the pusher pressure reference value to determine whether to adjust the position of the single hydraulic pusher;

[0113] Step S3, determining the coal mining adjustment strategy according to the determination result of the collapse tendency and the determination result of the support state of the hydraulic pusher.

[0114] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mine information integrated monitoring system, characterized in that: include: The data acquisition module includes a push-slide pressure sensing unit for collecting the push-slide pressure data between each hydraulic pusher and the contact surface of the slide and a support pressure sensing unit for collecting the support pressure data between each detection point of the hydraulic support and the top plate; The support pressure sensing unit determines the number of support pressure sensors and the position of each support pressure sensor according to the contact area between the hydraulic support and the top plate; A data processing module connected to the data acquisition module, for determining a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions, and determining a real-time push-and-slide pressure reference value according to each push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit; A support information analysis module, which is connected to the data processing module, and is used to determine the support pressure reference value in each direction at the same time according to the support pressure time sequence diagrams in each of the different directions to determine the support pressure average value and support pressure range at the corresponding time, compare the support pressure range at the same time with the support pressure reference value in each direction and determine the support pressure type in the corresponding direction according to the comparison result, compare the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, and determine whether the roof has a tendency to collapse in combination with the determination result of the support pressure type and the current support pressure average value state; A push-slide information analysis module, which is connected to the data processing module, and is used to determine the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide; An intelligent control module, which is connected to the support information analysis module and the push-slide information analysis module respectively, and is used to determine the coal mining adjustment strategy according to the determination result of the collapse tendency and the determination result of the support state of the hydraulic push-slide device; The coal mining adjustment strategy includes reducing the coal mining forward speed of the coal mining machine, increasing the supporting force of the hydraulic support on the roof, and enhancing the coordination between the hydraulic pusher and the coal mining machine in an invalid supporting state.

2. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The data processing module determines a real-time push-and-slide pressure reference value according to an average value and a deviation of each of the real-time push-and-slide pressure data.

3. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The support information analysis module determines the support pressure range at the corresponding moment according to the support pressure reference values ​​in each direction at any moment. The support pressure range P is calculated according to the following formula: P0-ΔP≤P≤P0+ΔP, , , Wherein, P is the support pressure range, n is the number of directions, Pi is the support pressure reference value in the i-th direction, and P0 is the average support pressure.

4. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The support information analysis module compares the support pressure range at the same time with the support pressure reference value in each direction and determines the support pressure type in the corresponding direction according to the comparison result, wherein: If the support pressure reference value in a single direction is within the support pressure range, the support pressure type in this direction is determined to be normal support pressure; If the support pressure reference value in a single direction is not within the support pressure range, the support pressure type in this direction is determined to be abnormal support pressure.

5. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The support information analysis module compares the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state, including: If the current support pressure average value is greater than the historical pressure preset value, the current support pressure average value state is determined to be an abnormal state; If the current support pressure average value is less than or equal to the historical pressure preset value, the current support pressure average value state is determined to be normal; Among them, the historical pressure preset value is 1.2 times the historical pressure standard value, and the historical pressure standard value is the median of the historical support pressure average value.

6. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The support information analysis module determines whether the roof has a collapse tendency by combining the determination result of the support pressure type with whether the current average state of the support pressure satisfies the collapse tendency judgment condition, including: If the determination result of the support pressure type and the current average state of the support pressure meet the collapse tendency determination condition, it is determined that the roof has a collapse tendency; If the determination result of the support pressure type and the current support pressure average value state do not meet the collapse tendency determination condition, it is determined that the roof has no collapse tendency; The collapse tendency judgment condition is that the support pressure type is abnormal support pressure and the state of the support pressure average value is abnormal.

7. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The push-slide information analysis module determines the support state of a single hydraulic push-slide according to the single push-slide pressure data and the push-slide pressure reference value to determine whether to adjust the position of the single hydraulic push-slide, including: If a single push slide pressure data is less than the push slide pressure reference value, it is determined that the support state of the slide is an invalid support state, and it is determined to adjust the position of the slide so that the hydraulic push slide is close to the slide; If a single push-slide pressure data is greater than or equal to the push-slide pressure reference value, it is determined that the support state of the slide is an effective support state, and it is determined not to adjust the position of the hydraulic push-slide.

8. The coal mine information integrated monitoring system according to claim 1 is characterized in that: The intelligent control module determines the coal mining adjustment strategy according to the judgment result of the collapse tendency and the judgment result of the support state of the hydraulic pusher, wherein: If the roof has a tendency to collapse and the hydraulic pusher is in an invalid support state, it is determined that the coal mining adjustment strategy is to reduce the coal mining forward speed of the coal mining machine; If the roof has a tendency to collapse and the hydraulic pushers are in an effective supporting state, it is determined that the coal mining adjustment strategy is to increase the supporting force of the hydraulic support on the roof; If the roof has no tendency to collapse and the hydraulic pusher is in an invalid support state, it is determined that the coal mining adjustment strategy is to enhance the coordination between the hydraulic pusher and the coal mining machine in the invalid support state.

9. A coal mine information comprehensive monitoring method using the coal mine information comprehensive monitoring system according to any one of claims 1 to 8, characterized in that: include, Obtaining a number of push-slide pressure data and a number of support pressure data; Determine a support pressure timing diagram in a corresponding direction according to the support pressure data in different directions, and determine a real-time push-and-slide pressure reference value according to each push-and-slide pressure data collected in real time by the push-and-slide pressure sensing unit; Determine the support pressure reference value in each direction at the same time according to the support pressure time sequence diagrams in different directions to determine the support pressure average value and support pressure range at the corresponding time; Comparing the support pressure range at the same time with the support pressure reference value in each direction and determining the support pressure type in the corresponding direction according to the comparison result; Compare the current support pressure average value with the historical pressure preset value to determine the current support pressure average value state; Determine whether the roof has a tendency to collapse by combining the determination result of the support pressure type with the current average state of the support pressure; Determine the support state of a single hydraulic pusher according to the single pusher pressure data and the pusher pressure reference value to determine whether to adjust the position of the single hydraulic pusher; The coal mining adjustment strategy is determined based on the results of the collapse tendency and the support status of the hydraulic pusher.

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