A roof disaster prevention method and system for surface extraction of high-position separated layer water

Abstract

The present application provides a kind of roof disaster prevention method and system of surface extraction high position separation layer water, belong to mining disaster prevention technical field, comprising: obtaining the effective mine pressure data and working face safety valve opening ratio corresponding to ground separation layer space;Determine long observation hole by ground separation layer space, obtain the long observation hole water level speed-up;Utilize long observation hole water level speed-up or working face safety valve opening ratio, determine the start time of deep well water pump;After deep well water pump operates for a certain length of time, utilize long observation hole water level speed-up or working face safety valve opening ratio, determine the stop time of deep well water pump.The present application is in the roof disaster prevention of ground extraction separation layer space water, adopts long observation water level speed-up and working face safety valve opening ratio two indexes to distinguish water pressure frame, can be more accurate to identify surface pumping occasion, meets the automatic accurate determination of water inrush pressure frame disaster prevention, effectively saves human resources, with direct, significant economic benefit and safety benefit.

Description

Technical Field

[0001] This invention relates to the field of mining disaster prevention and control technology, and in particular to a method and system for preventing roof disasters in surface extraction of high-level aquifer water. Background Technology

[0002] In recent years, coal mine water hazards have continued to occur frequently during coal mining, which not only seriously threaten the safety of underground workers, but also easily trigger secondary disasters and cause significant economic losses. In some mining areas, multiple coal mines have experienced a series of water inrush accidents at the fully mechanized longwall mining face. Although no casualties were caused, these accidents triggered large-scale roof cutting and frame collapse disasters, resulting in serious economic losses.

[0003] Currently, high-level delamination and water inrush leading to roof shearing and pressure formation at the working face is a new type of disaster. Previous technical measures for water hazards at the working face have proven ineffective in controlling high-level roof delamination and water inrush. For example, the commonly used technique of constructing direct drainage holes from the ground surface is prone to borehole collapse and blockage during drilling through aquitard mudstone sections, resulting in failed perforation. Drainage tunnel techniques, when employing large instantaneous water inrushes, can easily flood low-lying sections of the working face, hindering progress. Furthermore, due to the large area of ​​water accumulation in the delamination space, which dynamically changes with the advancement of the working face, curtain grouting technology is ineffective and requires significant investment. Without effective control of roof delamination water, large-scale roof shearing and pressure formation frequently occur at the working face.

[0004] To address the aforementioned problems, new prevention and control methods are needed to effectively manage roof-cutting and frame-collapse disasters caused by high-level delamination and sudden water inrush. Summary of the Invention

[0005] This invention provides a method and system for preventing roof disasters in surface extraction of high-level delamination water, which solves the defects of existing high-level delamination water hazard prevention methods, which have great limitations and are prone to causing large-scale roof cutting and secondary disasters.

[0006] In a first aspect, the present invention provides a method for preventing roof slab disasters in surface extraction of high-level aquifer water, comprising:

[0007] Obtain effective mine pressure data corresponding to the ground separation space and the opening ratio of safety valves at the working face;

[0008] The long observation hole is determined by the ground separation space, and the water level growth rate of the long observation hole is obtained;

[0009] The start-up time of the deep well pump is determined by using the water level increase rate of the long observation hole or the opening ratio of the safety valve at the working face.

[0010] After the deep well pump has been running for a certain period of time, the stopping time of the deep well pump is determined by using the water level increase rate of the long observation hole or the opening ratio of the safety valve at the working face.

[0011] According to the method for preventing roof disasters in surface extraction of high-level aquifer water provided by the present invention, before obtaining the effective mine pressure data corresponding to the surface aquifer space and the opening ratio of the working face safety valve, the method further includes:

[0012] Determine the location and drilling parameters of the drainage boreholes in the inner space of the ground, and based on the location and drilling parameters of the drainage boreholes, lay out multiple sets of drainage boreholes on the corresponding ground surface of the working face;

[0013] A support pressure monitoring system or an electro-hydraulic control system is installed on the working face support to obtain mine pressure data.

[0014] According to the present invention, a method for preventing roof disasters in surface extraction of high-level aquifer water includes installing a support pressure monitoring system or an electro-hydraulic control system on the working face support, and acquiring mine pressure data through the support pressure monitoring system or the electro-hydraulic control system, comprising:

[0015] A pressure sensor is installed on a pre-positioned bracket of the bracket pressure monitoring system or the electro-hydraulic control system;

[0016] The pressure sensor is used to acquire the mine pressure data during the mining process at the working face.

[0017] According to the present invention, a method for preventing roof disasters in surface extraction of high-level aquifer water includes obtaining effective mine pressure data corresponding to the surface aquifer space and the opening ratio of the working face safety valves, comprising:

[0018] Determine the working resistance curve of the working face support and the safety valve opening setting value;

[0019] Obtain the effective mine pressure data that is greater than or equal to the safety valve opening set value in the working resistance curve of the working face support;

[0020] After iterating through all the effective mining pressure data of several groups of working face supports, the sum of all effective mining pressure data is obtained.

[0021] The opening ratio of the working face safety valve is obtained based on the sum of the effective mine pressure data and the number of groups of working face supports.

[0022] According to the present invention, a method for preventing roof disasters in surface water extraction at high elevations is provided, wherein determining long observation holes from the surface aquifer space and obtaining the long observation hole water level growth rate includes:

[0023] The long observation holes are arranged on the working surface of the inner layer space of the ground, so that the final position of the long observation holes is located at the bottom of the high aquifer.

[0024] A water level sensor is installed in the lower part of the aquifer with long observation holes, and the water level sensor acquires the water level value of the upper aquifer at preset time intervals.

[0025] Output the water level growth rate curve based on the current water level value and the previous water level value;

[0026] The water level growth rate of the long observation hole is determined based on the water level growth rate change curve.

[0027] According to the present invention, a method for preventing roof disasters in surface water extraction from high-level segregation layers includes determining the start-up time of a deep well pump by utilizing the water level increase rate of the long observation hole or the opening ratio of the working face safety valve, comprising:

[0028] If it is determined that the water level growth rate of the long well is negative for a preset number of consecutive times, and the absolute value of the water level growth rate of the long well at the next moment is greater than the absolute value of the water level growth rate of the long well at the previous moment, then it is determined to start the deep well water pump.

[0029] Alternatively, if it is determined that the opening ratio of the working face safety valve is greater than or equal to a preset ratio threshold, then the deep well water pump is activated.

[0030] According to a method for preventing roof hazard in surface water extraction from high-level segregation zones provided by the present invention, after the deep well pump has been running for a certain period of time, the stopping time of the deep well pump is determined by using the water level increase rate of the long observation hole or the opening ratio of the working face safety valve, including:

[0031] If it is determined that the water level increase rate of the long observation hole approaches 0, or the opening ratio of the working face safety valve approaches 0, then the deep well water pump is shut down.

[0032] Secondly, the present invention also provides a roof disaster prevention system for surface extraction of high-level aquifer water, comprising:

[0033] The acquisition module is used to acquire the effective mine pressure data corresponding to the ground separation space and the opening ratio of the working face safety valve;

[0034] The determination module is used to determine the long observation hole from the ground separation space and obtain the long observation hole water level growth rate;

[0035] The startup module is used to determine the startup time of the deep well pump by utilizing the water level increase rate of the long observation hole or the opening ratio of the working face safety valve.

[0036] The shutdown module is used to determine the stopping time of the deep well water pump after the deep well water pump has been running for a certain period of time, by using the water level increase rate of the long observation hole or the opening ratio of the working face safety valve.

[0037] Thirdly, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the roof disaster prevention method for extracting high-level aquifer water from the surface as described above.

[0038] Fourthly, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the roof disaster prevention method for surface extraction of high-level aquifer water as described in any of the above-described methods.

[0039] Fifthly, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the roof disaster prevention method for extracting high-level aquifer water from the surface as described above.

[0040] The method and system for preventing roof hazard in surface water extraction of high-level aquifers provided by this invention uses two indicators—long-term observation of water level increase rate and working face safety valve opening ratio—to determine the timing of surface water extraction. This method can accurately identify the timing of surface water extraction, meets the requirements for automated and precise determination of roof hazard prevention, effectively saves human resources, and has direct and significant economic and safety benefits. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic flowchart of the method for preventing roof disasters in the surface extraction of high-level aquifer water provided by the present invention;

[0043] Figure 2 This is a schematic diagram of the construction location of the surface drainage borehole provided by the present invention;

[0044] Figure 3 This is a schematic diagram of the delamination pumping drilling construction process provided by the present invention;

[0045] Figure 4 This is one of the schematic diagrams showing the installation position of the bracket pressure sensor provided by the present invention;

[0046] Figure 5 This is the second schematic diagram of the mounting position of the bracket pressure sensor provided by the present invention;

[0047] Figure 6This is a schematic diagram of the water level drop rate change curve provided by the present invention.

[0048] Figure 7 This is a schematic diagram of the linkage curve between the water level in the separation space and the working face mine pressure provided by the present invention;

[0049] Figure 8 This is a schematic diagram of the roof disaster prevention system for surface extraction of high-level aquifer water provided by the present invention;

[0050] Figure 9 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0052] Because existing methods for preventing and controlling high-level aquifer water hazards from surface extraction have many limitations and cannot effectively manage roof collapse disasters caused by high-level aquifer water inrush, this invention proposes a new method for preventing roof collapse disasters caused by surface extraction of high-level aquifer water. The key to this method is to eliminate high-level roof aquifer water inrush. Before the working face is mined, drainage boreholes are drilled on the surface and pumping devices are lowered into the aquifer space. Two monitoring indicators, namely the rate of increase of water level in the high-level aquifer and the opening ratio of the working face safety valve, are used as the basis for determining the timing of pumping. When the pumping conditions are triggered, surface aquifer pumping is carried out to eliminate the possible water inrush disaster at its source, thereby effectively managing large-area roof collapse disasters at the working face.

[0053] Figure 1 This is a schematic flowchart of the method for preventing roof disasters in surface water extraction from high-level segregation layers provided by the present invention, as shown below. Figure 1 As shown, it includes:

[0054] Step 100: Obtain the effective mine pressure data and working face safety valve opening ratio corresponding to the ground separation space;

[0055] First, a long observation borehole is drilled on the ground corresponding to the working face. The borehole eventually reaches the bottom of the high-level aquifer. A water level monitoring device is installed in the lower layers of the aquifer within this borehole to monitor the aquifer water level elevation and transmit the data to the ground control center for later use. The long observation borehole water level monitoring system is then used to automatically analyze the rate of change of the high-level aquifer water level.

[0056] Step 200: Determine the long observation hole from the ground separation space, and obtain the long observation hole water level growth rate;

[0057] After determining the long observation hole, a water-pressure linkage analysis system compatible with the water level data format of the long observation hole was developed based on the mine pressure monitoring and early warning system. This system automatically analyzes the linkage change curves of mine pressure and water level, providing a basis for the automated and accurate determination of the timing of pumping water in the surface separation space.

[0058] Step 300: Determine the start-up time of the deep well pump by using the water level increase rate of the long observation hole or the opening ratio of the working face safety valve;

[0059] The water level increase rate can be used as one of the criteria for identifying water discharge from the working face separation space, or the safety valve opening ratio can be used as one of the criteria for identifying large-area pressure on the working face, which can be used as the starting point for pumping water from the ground separation space.

[0060] Step 400: After the deep well pump has been running for a certain period of time, determine the stopping time of the deep well pump by using the water level increase rate of the long observation hole or the opening ratio of the working face safety valve.

[0061] After the ground surface delamination space has been pumped for a period of time, the standard for ending the pumping of the ground surface delamination space is determined by the rate of increase in water level at the long observation hole and the opening ratio of the safety valve at the working face.

[0062] This invention uses two indicators—the rate of increase in water level over a long period of observation and the opening ratio of the safety valve at the working face—to determine the timing of surface water pumping in the prevention and control of roof slab disasters caused by ground-level water extraction. This allows for more accurate identification of the timing of surface water pumping, meets the requirements for automated and precise determination of roof slab disaster prevention and control, effectively saves human resources, and has direct and significant economic and safety benefits.

[0063] Based on the above embodiments, before obtaining the effective mine pressure data corresponding to the ground delamination space and the working face safety valve opening ratio, the method further includes:

[0064] Determine the location and drilling parameters of the drainage boreholes in the inner space of the ground, and based on the location and drilling parameters of the drainage boreholes, lay out multiple sets of drainage boreholes on the corresponding ground surface of the working face;

[0065] A support pressure monitoring system or an electro-hydraulic control system is installed on the working face support to obtain mine pressure data.

[0066] The step of installing a support pressure monitoring system or an electro-hydraulic control system on the working face support, and acquiring mine pressure data through the support pressure monitoring system or the electro-hydraulic control system, includes:

[0067] A pressure sensor is installed on a pre-positioned bracket of the bracket pressure monitoring system or the electro-hydraulic control system;

[0068] The pressure sensor is used to acquire the mine pressure data during the mining process at the working face.

[0069] Specifically, firstly, multiple sets of drainage boreholes are constructed on the surface corresponding to the working face. The drainage boreholes are located in the middle of the working face in the dip direction and in various positions in the strike direction, such as... Figure 2 In the embodiment shown, the working face width is 200m, and the extraction boreholes are located at 200m, 400m, 600m and 800m from the cut, respectively, and are numbered CP1, CP2, CP3 and CP4.

[0070] In the vertical direction, the final drilling level of the extraction borehole must penetrate a certain distance from the bottom of the high-level aquifer, such as... Figure 3 As shown, the specific construction procedures are as follows:

[0071] 1) Pilot hole: First, use a φ222mm drill bit to drill from the surface to (h1+h2+h3), where (h1+h2) reaches the bottom of the high aquifer, and h3 is a distance from the bottom of the high aquifer. In this embodiment, h3 is taken as 40~50m.

[0072] 2) Enlargement: First, enlarge the hole to (h1+h2+h3) using a Ф425mm combination drill bit, and then enlarge the hole to a depth of (h1+h2) using a Ф600mm combination drill bit. To ensure the concentricity of the upper and lower wellbores during subsequent enlargement, the enlargement depth of each smaller stage should be 1m greater than that of the larger stage. Each stage of enlargement drill bit should be equipped with a matching guide and stabilizer to ensure a smooth and regular hole diameter.

[0073] 3) Casing installation and cementing: After cleaning the sediment at the bottom of the well and adjusting the mud properties to ensure smooth wellbore flow, a seamless steel pipe of Q235B material Ф478×10mm is installed. The outside of the pipe is sealed with R42.5 cement grout. The cement grout is prepared with a water-cement ratio of 0.5:1. The bottom of the casing is sealed with h2. In this embodiment, h2 = 30m.

[0074] 4) Lower the deep well water pump to section h3 and wait for the pumping operation to begin.

[0075] Furthermore, a support pressure monitoring system or an electro-hydraulic control system is installed on the working face support. The support pressure monitoring system requires one support pressure recorder for every 10 supports. The electro-hydraulic control system requires one pressure sensor per support. For four-column support shield-type supports, pressure sensors are respectively arranged on one front column and one rear column. For two-column shield-type supports, pressure sensors are respectively arranged on the left and right columns. Figure 4 As shown, the real-time pressure in the lower cavity of the support column is monitored during the mining process, such as... Figure 5 As shown.

[0076] This invention ensures that the boreholes are sturdy and pressure-resistant during construction by laying out multiple sets of extraction and drainage boreholes on the ground and using a fixing process, preventing collapse and water leakage.

[0077] Based on the above embodiments, the step of determining the long observation hole from the surface delamination space, and the step of obtaining the effective mine pressure data and the working face safety valve opening ratio corresponding to the surface delamination space, include:

[0078] Determine the working resistance curve of the working face support and the safety valve opening setting value;

[0079] Obtain the effective mine pressure data that is greater than or equal to the safety valve opening set value in the working resistance curve of the working face support;

[0080] After iterating through all the effective mining pressure data of several groups of working face supports, the sum of all effective mining pressure data is obtained.

[0081] The opening ratio of the working face safety valve is obtained based on the sum of the effective mine pressure data and the number of groups of working face supports.

[0082] Understandably, the real-time monitoring data of the mining pressure during the longwall face mining process will be transmitted to the ground dispatch center. A developed mining pressure monitoring and early warning system (such as the KJ21 model) will then be used to display the working resistance curve of the working face support in real time, using the support working resistance P as the indicator. i ≥Safety valve opening setting value P e As a criterion for pressure, the system automatically analyzes the pressure situation of each support on the working face at the same time.

[0083] Computer programming employs a data traversal method to process the mine pressure data P1, P2, ..., P of the first support within a set of cycles. n With P e Iterate through the comparisons; if P i (i = 1, 2, ..., n) ≥ P e If the value is positive, it is recorded as 1; otherwise, it is recorded as 0. Similarly, the same cycle of mine pressure data P1, P2, ..., P of the second support are recorded as follows: n With P e Iterate through the comparisons; if P i (i = 1, 2, ..., n) ≥ P e If the value is positive, it is recorded as 1; otherwise, it is recorded as 0. After iterating through the cyclic mine pressure data of all m groups of supports in the working face, the sum of the results is recorded as l. Then, the safety valve opening ratio K in one cycle is K = l / m × 100%.

[0084] This invention solves the technical problem of identifying the timing of surface pumping by using two indicators: the rate of increase in water level over a long period of observation and the opening ratio of the safety valve at the working face.

[0085] Based on the above embodiments, obtaining the water level growth rate of the long-viewed aperture includes:

[0086] The long observation holes are arranged on the working surface of the inner layer space of the ground, so that the final position of the long observation holes is located at the bottom of the high aquifer.

[0087] A water level sensor is installed in the lower part of the aquifer with long observation holes, and the water level sensor acquires the water level value of the upper aquifer at preset time intervals.

[0088] Output the water level growth rate curve based on the current water level value and the previous water level value;

[0089] The water level growth rate of the long observation hole is determined based on the water level growth rate change curve.

[0090] Specifically, long observation boreholes are drilled on the ground corresponding to the working face. The final borehole position of the long observation borehole reaches the bottom of the high-level aquifer. A water level sensor is installed in the lower part of the aquifer within this borehole to monitor the water level elevation of the high-level aquifer and transmit the data to the ground control center. Using a mature and widely used long observation borehole water level monitoring system, the water level value H of the high-level aquifer is recorded and displayed every hour. i Water level increase calculation formula V i =(H i+1 -H i ), automatically analyze and obtain the curve of the rate of change of water level in high-level aquifers, such as Figure 6 As shown, when V i >0 indicates a rise in water level; when V i <0 indicates a drop in water level.

[0091] This invention utilizes a long-aperture water level monitoring system to automatically analyze the rate of change of water level in high-level aquifers.

[0092] Based on the above embodiments, determining the start-up time of the deep well pump by utilizing the water level increase rate of the long observation hole or the opening ratio of the working face safety valve includes:

[0093] If it is determined that the water level growth rate of the long well is negative for a preset number of consecutive times, and the absolute value of the water level growth rate of the long well at the next moment is greater than the absolute value of the water level growth rate of the long well at the previous moment, then it is determined to start the deep well water pump.

[0094] Alternatively, if it is determined that the opening ratio of the working face safety valve is greater than or equal to a preset ratio threshold, then the deep well water pump is activated.

[0095] Specifically, based on a mine pressure monitoring and early warning system (such as the KJ21 model), this invention develops a water-pressure linkage analysis system compatible with long-view hole water level data formats. Through computer programming and using Origin or Excel plotting methods, it automatically analyzes the linkage curves between mine pressure and water level, such as... Figure 7 As shown, this provides a basis for the automated and accurate determination of when to pump water from the ground-level separation space.

[0096] Pumping of the ground separation space will be initiated when one of the following two identification criteria is met:

[0097] 1) When the continuous water level increase rate V i All are negative and their absolute values ​​satisfy V i+4 >V i+3 >V i+2 >V i+1 >V i Here, the water level increase rate values ​​at four consecutive moments are set as the identification standard for water outflow from the delamination space at the working face;

[0098] 2) When the safety valve opening ratio K≥30%, 30% is the preset ratio threshold, which is used as the identification standard for large-area pressure on the working surface.

[0099] The pumping timing determination method proposed in this invention can be automatically captured and analyzed through computer programming, which meets the requirements of automated and accurate determination of flood damage prevention and control, and effectively saves human resources.

[0100] Based on the above embodiments, after the deep well pump has been running for a certain period of time, the stopping time of the deep well pump is determined by using the water level increase rate of the long observation hole or the opening ratio of the working face safety valve, including:

[0101] If it is determined that the water level increase rate of the long observation hole approaches 0, or the opening ratio of the working face safety valve approaches 0, then the deep well water pump is shut down.

[0102] Typically, after pumping water into the delamination space of the ground top slab for a period of time, the pumping is stopped when the water level in the long observation hole approaches zero and remains stable, and the opening ratio K of the safety valve on the working face approaches zero.

[0103] It should be noted that this process is dynamic and continuous. If the system continues to monitor and find that the conditions for starting the pumping are met, the pumping will continue to start. After a period of time, the pumping will stop when the termination conditions are met. This invention does not impose any restrictions on the continuous process.

[0104] This invention uses only specific examples of technical parameters to illustrate the system and method for preventing surface water delamination and the resulting pressure on the working face. The drilling size, depth, and other parameters used may be adjusted accordingly for different geological and mining conditions, but all fall within the scope of the system and method of this invention patent.

[0105] The roof disaster prevention system for surface extraction of high-level aquifer water provided by the present invention is described below. The roof disaster prevention system for surface extraction of high-level aquifer water described below can be referred to in correspondence with the roof disaster prevention method for surface extraction of high-level aquifer water described above.

[0106] Figure 8 This is a schematic diagram of the roof disaster prevention system for surface extraction of high-level aquifer water provided by the present invention, as shown in the figure. Figure 8 As shown, it includes: an acquisition module 81, a determination module 82, a start module 83, and a stop module 84, wherein:

[0107] The acquisition module 81 is used to acquire the effective mine pressure data and the working face safety valve opening ratio corresponding to the ground delamination space; the determination module 82 is used to determine the long observation hole from the ground delamination space and acquire the long observation hole water level growth rate; the start module 83 is used to determine the start time of the deep well water pump by using the long observation hole water level growth rate or the working face safety valve opening ratio; the shutdown module 84 is used to determine the stop time of the deep well water pump by using the long observation hole water level growth rate or the working face safety valve opening ratio after the deep well water pump has been running for a certain period of time.

[0108] This invention uses two indicators—the rate of increase in water level over a long period of observation and the opening ratio of the safety valve at the working face—to determine the timing of surface water pumping in the prevention and control of roof slab disasters caused by ground-level water extraction. This allows for more accurate identification of the timing of surface water pumping, meets the requirements for automated and precise determination of roof slab disaster prevention and control, effectively saves human resources, and has direct and significant economic and safety benefits.

[0109] Figure 9 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 9As shown, the electronic device may include: a processor 910, a communication interface 920, a memory 930, and a communication bus 940. The processor 910, communication interface 920, and memory 930 communicate with each other via the communication bus 940. The processor 910 can call logical instructions in the memory 930 to execute a method for preventing roof hazard in surface extraction of high-level aquifer water. This method includes: acquiring effective mine pressure data corresponding to the surface aquifer space and the opening ratio of the working face safety valve; determining a long observation hole from the surface aquifer space and acquiring the long observation hole water level growth rate; determining the start-up time of the deep well pump using the long observation hole water level growth rate or the working face safety valve opening ratio; and determining the stop time of the deep well pump after it has run for a certain period of time using the long observation hole water level growth rate or the working face safety valve opening ratio.

[0110] Furthermore, the logical instructions in the aforementioned memory 930 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0111] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the roof disaster prevention method for surface extraction of high-level aquifer water provided by the above methods. The method includes: acquiring effective mine pressure data and working face safety valve opening ratio corresponding to the surface aquifer space; determining long-observation holes from the surface aquifer space and acquiring the long-observation hole water level growth rate; determining the start-up time of the deep well water pump using the long-observation hole water level growth rate or the working face safety valve opening ratio; and determining the stop time of the deep well water pump after the deep well water pump has been running for a certain period of time using the long-observation hole water level growth rate or the working face safety valve opening ratio.

[0112] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program implements a method for preventing roof disasters in surface extraction of high-level aquifer water provided by the methods described above. The method includes: acquiring effective mine pressure data and working face safety valve opening ratio corresponding to the surface aquifer space; determining long-observation holes from the surface aquifer space and acquiring the long-observation hole water level growth rate; determining the start-up time of a deep well pump using the long-observation hole water level growth rate or the working face safety valve opening ratio; and determining the stop time of the deep well pump after it has run for a certain period of time using the long-observation hole water level growth rate or the working face safety valve opening ratio.

[0113] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0114] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A roof disaster prevention method for surface extraction of high-seam water, characterized by, include: The process involves acquiring effective mine pressure data corresponding to the surface delamination space and the working face safety valve opening ratio. This acquisition includes: determining the working face support's working resistance curve and the safety valve opening setpoint; acquiring the effective mine pressure data in the working face support's working resistance curve that is greater than or equal to the safety valve opening setpoint; iterating through all groups of working face support effective mine pressure data and summing all effective mine pressure data to obtain the sum of effective mine pressure data; and obtaining the working face safety valve opening ratio based on the sum of effective mine pressure data and the number of groups of working face supports. The long observation hole is determined by the ground separation space, and the water level growth rate of the long observation hole is obtained; The start-up time of the deep well pump is determined by using the growth rate of the water level in the long observation hole or the opening ratio of the working face safety valve. This determination includes: if a preset number of consecutive growth rates of the water level in the long observation hole are all negative, and the absolute value of the growth rate of the water level in the long observation hole at the next moment is greater than the absolute value of the growth rate of the water level in the long observation hole at the previous moment, then the deep well pump is started; or, if the opening ratio of the working face safety valve is greater than or equal to a preset ratio threshold, then the deep well pump is started. After the deep well pump has been running for a certain period of time, the stopping time of the deep well pump is determined by using the rate of increase of the water level in the long observation hole or the opening ratio of the safety valve at the working face. The determination of the stopping time of the deep well pump after the deep well pump has been running for a certain period of time includes: if it is determined that the rate of increase of the water level in the long observation hole is close to 0, or the opening ratio of the safety valve at the working face is close to 0, then the deep well pump is shut down.

2. The roof disaster prevention method for surface extraction of high position bed water according to claim 1, characterized in that, Before obtaining the effective mine pressure data corresponding to the ground delamination space and the working face safety valve opening ratio, the process also includes: Determine the location and drilling parameters of the drainage boreholes in the inner space of the ground, and based on the location and drilling parameters of the drainage boreholes, lay out multiple sets of drainage boreholes on the corresponding ground surface of the working face; A support pressure monitoring system or an electro-hydraulic control system is installed on the working face support to obtain mine pressure data.

3. The roof hazard prevention method for surface extraction of high position bed water according to claim 2, characterized in that, The installation of a support pressure monitoring system or an electro-hydraulic control system on the working face support, and the acquisition of mine pressure data through the support pressure monitoring system or the electro-hydraulic control system, includes: A pressure sensor is installed on a pre-positioned bracket of the bracket pressure monitoring system or the electro-hydraulic control system; The pressure sensor is used to acquire the mine pressure data during the mining process at the working face.

4. The method for preventing roof disasters in surface water extraction from high-level aquifers according to claim 1, characterized in that, The step of determining the long borehole from the ground delamination space and obtaining the long borehole water level growth rate includes: The long observation holes are arranged on the working surface of the inner layer space of the ground, so that the final position of the long observation holes is located at the bottom of the high aquifer. A water level sensor is installed in the lower part of the aquifer with long observation holes, and the water level sensor acquires the water level value of the upper aquifer at preset time intervals. Output the water level growth rate curve based on the current water level value and the previous water level value; The water level growth rate of the long observation hole is determined based on the water level growth rate change curve.

5. A roof disaster prevention system for surface extraction of high-level aquifer water, characterized in that, include: The acquisition module is used to acquire the effective mining pressure data corresponding to the ground delamination space and the working face safety valve opening ratio. Acquiring the effective mining pressure data corresponding to the ground delamination space and the working face safety valve opening ratio includes: determining the working resistance curve of the working face support and the safety valve opening set value; acquiring the effective mining pressure data in the working resistance curve of the working face support that is greater than or equal to the safety valve opening set value; traversing all groups of effective mining pressure data for the working face supports and summing all effective mining pressure data to obtain the sum of effective mining pressure data; and obtaining the working face safety valve opening ratio based on the sum of effective mining pressure data and the number of groups of working face supports. The determination module is used to determine the long observation hole from the ground separation space and obtain the long observation hole water level growth rate; The startup module is used to determine the startup time of the deep well pump by utilizing the growth rate of the water level in the long-perforation well or the opening ratio of the working face safety valve. Determining the startup time of the deep well pump by utilizing the growth rate of the water level in the long-perforation well or the opening ratio of the working face safety valve includes: if a preset number of consecutive growth rates of the water level in the long-perforation well are all negative, and the absolute value of the growth rate of the water level in the long-perforation well at the next moment is greater than the absolute value of the growth rate of the water level in the long-perforation well at the previous moment, then the deep well pump is started; or, if the opening ratio of the working face safety valve is greater than or equal to a preset ratio threshold, then the deep well pump is started. The shutdown module is used to determine the stopping time of the deep well water pump after it has been running for a certain period of time, based on the rate of increase of the water level in the long observation hole or the opening ratio of the working face safety valve. The determination of the stopping time of the deep well water pump after it has been running for a certain period of time, based on the rate of increase of the water level in the long observation hole or the opening ratio of the working face safety valve, includes: if it is determined that the rate of increase of the water level in the long observation hole is close to 0, or the opening ratio of the working face safety valve is close to 0, then the deep well water pump is shut down.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the roof disaster prevention method for extracting high-level aquifer water from the surface as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the roof disaster prevention method for extracting high-level aquifer water from the surface as described in any one of claims 1 to 4.

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