Partitioned differentiation roof fracturing method and device under mine, electronic equipment and medium

Abstract

The invention provides a subarea differentiation roof fracturing method and device under a mine, electronic equipment and a medium, and the method comprises the steps: carrying out the statistics of the layering thickness information of a full-hole-depth rock stratum of each exploratory hole based on a ground exploratory hole histogram of a coal face; based on the full-hole-depth rock stratum layering thickness information of all the exploration holes, the base load thickness ratio of all the exploration holes is determined; on the basis of the base load thickness ratio of each exploratory hole, determining the mine pressure strength grade of the influence area of each exploratory hole, and dividing the coal face into a plurality of subareas on the basis of the mine pressure strength grade of the influence area of each exploratory hole; and on the basis of the mine pressure strength grade of each subarea, a roof fracturing scheme of each subarea is determined. According to the technical scheme, the disaster prevention and treatment efficiency can be greatly improved, and the technical cost investment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of mining technology, and in particular to a method, device, electronic equipment and medium for differentiated roof fracturing in underground mines. Background Art

[0002] The design of rock fracturing and pressure relief in underground mines is a complex system process, involving multiple disciplines and engineering technologies such as geology, rock mechanics, machinery and spatial measurement. By understanding the basic assumptions of fracture morphology, formation mechanism, geometric characteristics, pressure analysis and the influence of rock properties, designers can develop more effective fracture design plans, thereby improving mining efficiency and resource utilization.

[0003] The roof of coal seams in underground coal mines generally has hard and difficult-to-cross rock layers, which causes strong roof pressure during coal mining. The sudden collapse of the roof causes strong hurricanes in the tunnels and even impact ground pressure disasters. Roof fracturing related technologies are an effective means to solve the above disaster prevention problems, and their design methods and plans are crucial to the disaster prevention effect. At present, the regional fracturing design method is relatively simple, and the determination of the scope of the treatment area is relatively blind and conservative, resulting in poor technical and economic performance and low treatment efficiency. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a method, device, electronic equipment and medium for differentiated roof fracturing in underground mine zones.

[0005] In a first aspect, the present invention provides a method for differentiated roof fracturing in a mine, comprising: Based on the ground exploration hole column chart of the coal mining face, the full-hole deep rock layer thickness information of each exploration hole is counted; Based on the full-hole deep rock layer thickness information of each exploration hole, determine the base load thickness ratio of each exploration hole; Based on the base load thickness ratio of each exploration hole, determine the mine pressure intensity level of the influence area of ​​each exploration hole, and divide the coal mining working face into multiple zones based on the mine pressure intensity level of the influence area of ​​each exploration hole; Based on the mine pressure intensity level of each zone, determine the roof fracturing plan for each zone.

[0006] In some embodiments, based on the base load thickness ratio of each exploration hole, determining the mine pressure intensity level of the impact area of ​​each exploration hole includes: For exploration holes with a base load thickness ratio less than or equal to 1.5, the mine pressure intensity level of the exploration hole's influence area is determined as a strong mine pressure level; For exploration holes with a base load thickness ratio greater than 1.5 and less than or equal to 2, the mine pressure intensity level of the exploration hole's influence area is determined as a medium mine pressure level; For exploration holes with a base load thickness ratio greater than 2, the ore pressure intensity level in the influence area of ​​the exploration hole is determined as a weak ore pressure level.

[0007] In some embodiments, based on the mine pressure intensity level of each zone, determining the roof fracturing scheme of each zone includes: For the zone with strong mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in three hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 4; For the zone with medium mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in two hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 3; For the zones with weak mine pressure intensity level, the roof fracturing plan for the zones is determined as follows: directional drilling is arranged in one hard rock layer in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 2.

[0008] In some embodiments, the depth of the directional drilling is 500 meters to 600 meters.

[0009] In some embodiments, the thickness of the roof collapse zone is 10 times the thickness of the mined coal seam.

[0010] In some embodiments, the coal mining face is divided into a plurality of zones based on the mine pressure intensity level of the influence zone of each exploration hole, including: Multiple adjacent impact areas with the same mine pressure intensity level are taken as one partition, and impact areas with different mine pressure intensity levels are divided into different partitions.

[0011] In a second aspect, the present invention further provides a mine underground zone differentiated roof fracturing device, comprising: A statistical module is used to count the full-hole depth rock layer thickness information of each exploration hole based on the ground exploration hole column chart of the coal mining working face; A first determination module is used to determine the base load thickness ratio of each exploration hole based on the full-hole depth rock layer thickness information of each exploration hole; A zoning module is used to determine the mine pressure intensity level of the influence zone of each exploration hole based on the base load thickness ratio of each exploration hole, and divide the coal mining face into multiple zones based on the mine pressure intensity level of the influence zone of each exploration hole; The second determination module is used to determine the roof fracturing plan of each partition based on the mine pressure intensity level of each partition.

[0012] In a third aspect, the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for differentiated roof fracturing in underground mine zones as described in the first aspect is implemented.

[0013] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for differentiated roof fracturing in underground mine zones as described in the first aspect.

[0014] In a fifth aspect, the present invention further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the method for differentiated roof fracturing in underground mine zones as described in the first aspect.

[0015] The method, device, electronic equipment and medium for differentiated roof fracturing of underground mine zones provided by the present invention determine the mine pressure intensity grade of the influence zone of each exploration hole through the base load thickness ratio of each exploration hole, and divide the coal mining working face into multiple zones based on the mine pressure intensity grade of the influence zone of each exploration hole, and then determine the roof fracturing scheme of each zone based on the mine pressure intensity grade of each zone, thereby realizing differentiated roof fracturing design for zones with different mine pressure intensity, which can greatly improve the efficiency of disaster prevention and management and reduce technical cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the process of the differentiated roof fracturing method for underground mine zones provided by the present invention.

[0018] Figure 2 It is an example diagram of directional drilling in different partitions provided by the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the mine underground zone differentiated roof fracturing device provided by the present invention.

[0020] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the present invention, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0023] In the present invention, the term "plurality" refers to two or more than two, and other quantifiers are similar to them.

[0024] In the present invention, the terms "first", "second", etc. are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0025] Combine the following Figure 1-Figure 4 Embodiments of the present invention are described.

[0026] Figure 1 Schematic diagram of the process of the differentiated roof fracturing method for underground mine provided by the present invention, such as Figure 1 As shown, the method includes the following steps 101, 102, 103 and 104.

[0027] Step 101: Based on the ground exploration hole column chart of the coal mining face, the full-hole depth rock layer thickness information of each exploration hole is counted.

[0028] Specifically, firstly, for the coal mining working face (the working face planned for mining in the coal mine), the ground exploration hole column chart of the mining area is collected, and the full-hole depth rock layer thickness information of each exploration hole is counted.

[0029] The ground exploration hole column diagram, referred to as the borehole column diagram, is a commonly used map in geological exploration and engineering survey. The borehole column diagram is compiled based on the on-site records of the drilling. It clearly reflects the rock layer, ore body and the inherent relationship of the borehole, and can display the borehole structure, stratum, lithology, ore situation, footage and other drilling and geological information.

[0030] Therefore, the full-hole-depth rock stratification thickness information of each exploration hole can be obtained through the ground exploration hole column chart. The full-hole-depth rock stratification thickness refers to the thickness of each rock stratum drilled from the bottom of the hole to the hole mouth during the drilling process.

[0031] Step 102: Determine the base load thickness ratio of each exploration hole based on the full-hole depth rock layer thickness information of each exploration hole.

[0032] Specifically, the base load thickness ratio refers to the ratio of the bedrock thickness to the thickness of the loose load layer in the entire area from the coal seam roof to the surface of the coal mine. For example, if H represents the bedrock thickness and h represents the thickness of the loose load layer, then the base load thickness ratio K = H / h.

[0033] Among them, bedrock refers to bedrock with self-bearing capacity, and loose load layer refers to loose load layers such as Quaternary loess and aeolian sand.

[0034] Through the full-hole depth rock layer thickness information of the exploration hole, it is possible to determine which rock layers the exploration hole has passed through, and the total thickness of the bedrock and the total thickness of the loose load layer. By dividing the total thickness of the bedrock by the total thickness of the loose load layer, the base load thickness ratio of the exploration hole can be obtained.

[0035] Step 103: Based on the base load thickness ratio of each exploration hole, determine the mine pressure intensity level of the influence area of ​​each exploration hole, and divide the coal mining working face into multiple subareas based on the mine pressure intensity level of the influence area of ​​each exploration hole.

[0036] Specifically, the bedrock thickness and the loose load layer thickness are the main factors affecting the manifestation of mine pressure. The base load thickness ratio plays a decisive role in the stability of the roof structure of the mining face. Therefore, the present invention combines theoretical research and practical results to propose a classification of the mine pressure intensity of the working face in the influence area of ​​each exploration hole according to the base load thickness ratio of each exploration hole.

[0037] The influence zone of the exploration hole refers to the area where the exploration hole can obtain effective geological information.

[0038] In some embodiments, based on the base load thickness ratio of each exploration hole, determining the mine pressure intensity level of the impact area of ​​each exploration hole includes: For exploration holes with a base load thickness ratio less than or equal to 1.5, the mine pressure intensity level of the exploration hole's influence area is determined as a strong mine pressure level; For exploration holes with a base load thickness ratio greater than 1.5 and less than or equal to 2, the mine pressure intensity level of the exploration hole's influence area is determined as a medium mine pressure level; For exploration holes with a base load thickness ratio greater than 2, the ore pressure intensity level in the influence area of ​​the exploration hole is determined as a weak ore pressure level.

[0039] After determining the mine pressure intensity level of the influence zone of each exploration hole, the coal mining face can be further divided into multiple zones based on the mine pressure intensity level of the influence zone of each exploration hole, so as to design differentiated roof fracturing schemes for each zone.

[0040] In some embodiments, the coal mining face is divided into a plurality of zones based on the mine pressure intensity level of the influence zone of each exploration hole, including: Multiple adjacent impact areas with the same mine pressure intensity level are taken as one partition, and impact areas with different mine pressure intensity levels are divided into different partitions.

[0041] For example: assuming that the exploration holes of the coal mining face are numbered as exploration hole #1, exploration hole #2, exploration hole #3, exploration hole #4, exploration hole #5, exploration hole #6, and exploration hole #7 (this is only an example, the actual number is not limited), the mine pressure intensity levels of the influence areas of these 7 exploration holes are weak mine pressure level, strong mine pressure level, medium mine pressure level, strong mine pressure level, strong mine pressure level, weak mine pressure level, and weak mine pressure level, then the adjacent influence areas with the same mine pressure intensity level can be regarded as a partition. That is, the influence area of ​​exploration hole #4 and exploration hole #5 is taken as one partition, the influence area of ​​exploration hole #6 and exploration hole #7 is taken as one partition, and the influence areas of different mine pressure intensity levels are divided into different partitions, and finally 5 partitions are obtained, that is, the influence area of ​​exploration hole #1 is the first partition, the influence area of ​​exploration hole #2 is the second partition, the influence area of ​​exploration hole #3 is the third partition, the influence areas of exploration holes #4 and exploration holes #5 are combined into the fourth partition, and the influence areas of exploration holes #6 and exploration holes #7 are combined into the fifth partition. The mine pressure intensity levels of these 5 partitions are weak mine pressure level, strong mine pressure level, medium mine pressure level, strong mine pressure level, and weak mine pressure level, respectively, so that the coal mining face is divided into 5 partitions with different mine pressure intensity levels.

[0042] Step 104: Determine the roof fracturing plan for each zone based on the mine pressure intensity level of each zone.

[0043] Specifically, the present invention proposes to carry out differentiated roof fracturing design for different zones, and adopts different roof fracturing schemes for zones with different rock pressure intensity levels, including differentiated fracturing scheme designs such as the number of rock layers and the number of holes drilled in each layer. Subsequently, the location of the underground tunnel drilling site can be determined according to the determined roof fracturing scheme for each zone, and the trajectory and depth of each drilling hole can be designed and mapped, and underground zone fracturing construction can be carried out accordingly.

[0044] In some embodiments, based on the mine pressure intensity level of each zone, determining the roof fracturing scheme of each zone includes: For the zone with strong mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in three hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 4; For the zone with medium mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in two hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 3; For the zones with weak mine pressure intensity level, the roof fracturing plan for the zones is determined as follows: directional drilling is arranged in one hard rock layer in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 2.

[0045] The above-designed zoned differentiated roof fracturing scheme for different mine pressure intensity levels is a relatively economical fracturing scheme proposed on the premise of ensuring the pressure relief effect. It can reduce the technical cost investment and ensure the pressure relief effect.

[0046] Among them, the present invention does not limit the specific selection of hard rock layers. For example, for the zone with a strong mining pressure intensity level, it is necessary to arrange directional drilling holes in three (layers) of hard rock layers in the roof collapse zone. These three hard rock layers can be any three hard rock layers within the thickness range of the roof collapse zone.

[0047] In some embodiments, the thickness of the roof collapse zone is 10 times the thickness of the mined coal seam. For example, if the thickness of the mined coal seam is 2 meters, the thickness range of the roof collapse zone refers to the range from the roof of the mined coal seam to 20 meters above the roof. For the zone with a strong mine pressure level, directional drilling can be arranged in 3 hard rock layers within the 20-meter range to ensure the pressure relief effect.

[0048] The hard rock layer refers to the hard sandstone layer. If there is no hard sandstone layer of the required number, other harder rock layers can also be selected to arrange directional drilling.

[0049] In some embodiments, the depth of the directional drilling can be designed to be 500 meters to 600 meters, so that the technical cost investment can be minimized while ensuring the pressure relief effect. If the partition range is small and the depth of the directional drilling is not enough to be designed to be 500 meters to 600 meters, the depth of the directional drilling can be appropriately reduced.

[0050] The method for differentiated roof fracturing in mine zones provided by the present invention determines the mine pressure intensity grade of the influence zone of each exploration hole through the base load thickness ratio of each exploration hole, and divides the coal mining working face into multiple zones based on the mine pressure intensity grade of the influence zone of each exploration hole, and then determines the roof fracturing scheme of each zone based on the mine pressure intensity grade of each zone, thereby realizing differentiated roof fracturing design for zones with different mine pressure intensity, which can greatly improve the efficiency of disaster prevention and management and reduce technical cost investment.

[0051] Figure 2 is an example diagram of directional drilling in different zones provided by the present invention, Figure 2 (a) shows that the number of directional drilling holes arranged in each hard rock layer in the strong mine pressure zone is 4. Each parabola in the figure represents the drilling trajectory of a directional drilling hole, and the horizontal section of the drilling trajectory represents the drilling depth. Similarly, Figure 2(b) indicates that the number of directional drilling holes arranged in each hard rock layer in the zone with medium mining pressure is 3. Figure 2 (c) shows that the number of directional drill holes arranged in each hard rock layer in the zone with weak mineral pressure level is 2.

[0052] The following is an illustration using specific examples.

[0053] Implementation case: A large underground coal mine plans to mine a certain working face. By counting the columnar layer thickness of the rock strata in the ground exploration holes in the mining area of ​​the working face, it is calculated that the average value of the base load thickness ratio in area A is K=1.2, the average value of the base load thickness ratio in area B is K=1.8, and the average value of the base load thickness ratio in area C is K=2.2.

[0054] According to the partitioned differentiated roof fracturing method provided by the present invention, a partitioned differentiated planar scheme for the long borehole fracturing of the coal mine roof is proposed as follows: Figure 2 shown.

[0055] Area A: Strong mining pressure area, the designed directional drilling depth is 500m~600m, arranged in 3 hard sandstone layers in the roof collapse zone, 4 holes in each layer, and a total of 12 holes.

[0056] Area B: Medium mining pressure area, the designed directional drilling depth is 500m~600m, arranged in two hard sandstone layers in the roof collapse zone, with 3 holes in each layer and a total of 6 holes.

[0057] Zone C: Weak mining pressure zone, designed directional drilling depth of 500m~600m, arranged in a single hard sandstone layer in the roof collapse zone, with a total of 2 holes in a single rock layer.

[0058] The present invention proposes a zoning design and a one-zone-one-policy according to the characteristics of the coal-bearing strata overburden, thereby realizing the scientific and rational formulation of a pressure relief plan; in the direction of the coal mining face, the strong and weak mine pressure blocks are divided and the roof fracturing plan is designed in a targeted manner, which can realize the "advanced area fracturing pre-pressure relief-rear area working face mining" zoning collaborative parallel operation of the coal mining face, greatly improving the technical economy and disaster prevention and control efficiency.

[0059] The differentiated roof fracturing device for underground mine partitions provided by the present invention is described below. The differentiated roof fracturing device for underground mine partitions described below and the differentiated roof fracturing method for underground mine partitions described above can be referenced to each other.

[0060] Figure 3 Schematic diagram of the structure of the mine partition differentiated roof fracturing device provided by the present invention, such as Figure 3 As shown, the device comprises: A statistical module 310 is used to collect statistics of the full-hole depth rock layer thickness information of each exploration hole based on the ground exploration hole column diagram of the coal mining working face; A first determination module 320 is used to determine the base load thickness ratio of each exploration hole based on the full-hole depth rock layer thickness information of each exploration hole; A zoning module 330 is used to determine the mine pressure intensity level of the influence area of ​​each exploration hole based on the base load thickness ratio of each exploration hole, and divide the coal mining working face into multiple zones based on the mine pressure intensity level of the influence area of ​​each exploration hole; The second determination module 340 is used to determine the roof fracturing scheme of each partition based on the mine pressure intensity level of each partition.

[0061] In some embodiments, based on the base load thickness ratio of each exploration hole, determining the mine pressure intensity level of the impact area of ​​each exploration hole includes: For exploration holes with a base load thickness ratio less than or equal to 1.5, the mine pressure intensity level of the exploration hole's influence area is determined as a strong mine pressure level; For exploration holes with a base load thickness ratio greater than 1.5 and less than or equal to 2, the mine pressure intensity level of the exploration hole's influence area is determined as a medium mine pressure level; For exploration holes with a base load thickness ratio greater than 2, the ore pressure intensity level in the influence area of ​​the exploration hole is determined as a weak ore pressure level.

[0062] In some embodiments, based on the mine pressure intensity level of each zone, determining the roof fracturing scheme of each zone includes: For the zone with strong mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in three hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 4; For the zone with medium mine pressure intensity, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in two hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 3; For the zones with weak mine pressure intensity level, the roof fracturing plan for the zones is determined as follows: directional drilling is arranged in one hard rock layer in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 2.

[0063] In some embodiments, the depth of the directional drilling is 500 meters to 600 meters.

[0064] In some embodiments, the thickness of the roof collapse zone is 10 times the thickness of the mined coal seam.

[0065] In some embodiments, the coal mining face is divided into a plurality of zones based on the mine pressure intensity level of the influence zone of each exploration hole, including: Multiple adjacent impact areas with the same mine pressure intensity level are taken as one partition, and impact areas with different mine pressure intensity levels are divided into different partitions.

[0066] It should be noted here that the above-mentioned mine underground zone differentiated roof fracturing device provided by the present invention can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0067] Figure 4 is a schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the above-mentioned method for differentiated roof fracturing in the mine, for example, including: based on the ground exploration hole column chart of the coal mining face, statistics are collected on the full-hole-depth rock stratum layer thickness information of each exploration hole; based on the full-hole-depth rock stratum layer thickness information of each exploration hole, the base load thickness ratio of each exploration hole is determined; based on the base load thickness ratio of each exploration hole, the mine pressure intensity level of the influence area of ​​each exploration hole is determined, and the coal mining face is divided into multiple zones based on the mine pressure intensity level of the influence area of ​​each exploration hole; based on the mine pressure intensity level of each zone, the roof fracturing scheme of each zone is determined.

[0068] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0069] It should be noted here that the above-mentioned electronic device provided by the present invention can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0070] On the other hand, 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 above-mentioned method for differentiated roof fracturing in underground mine zones, for example, including: based on the ground exploration hole column chart of the coal mining working face, statistically analyzing the full-hole depth rock stratification thickness information of each exploration hole; based on the full-hole depth rock stratification thickness information of each exploration hole, determining the base load thickness ratio of each exploration hole; based on the base load thickness ratio of each exploration hole, determining the mine pressure intensity grade of the influence zone of each exploration hole, and dividing the coal mining working face into multiple zones based on the mine pressure intensity grade of the influence zone of each exploration hole; based on the mine pressure intensity grade of each zone, determining the roof fracturing plan for each zone.

[0071] It should be noted here that the above-mentioned non-transitory computer-readable storage medium provided by the present invention can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0072] On the other hand, the present invention also provides a computer program product, which includes a computer program, which 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 above-mentioned differentiated roof fracturing method for underground mine zones, for example, including: based on the ground exploration hole column chart of the coal mining working face, statistically analyzing the full-hole depth rock stratification thickness information of each exploration hole; based on the full-hole depth rock stratification thickness information of each exploration hole, determining the base load thickness ratio of each exploration hole; based on the base load thickness ratio of each exploration hole, determining the mine pressure intensity level of the influence zone of each exploration hole, and dividing the coal mining working face into multiple zones based on the mine pressure intensity level of the influence zone of each exploration hole; based on the mine pressure intensity level of each zone, determining the roof fracturing plan for each zone.

[0073] It should be noted here that the above-mentioned computer program product provided by the present invention can implement all the method steps implemented by the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0074] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0075] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for differentiated roof fracturing in a mine, characterized in that: include: Based on the ground exploration hole column chart of the coal mining face, the full-hole deep rock layer thickness information of each exploration hole is counted; Determining the base load thickness ratio of each exploration hole based on the full-hole deep rock layer thickness information of each exploration hole; Determine the mine pressure intensity level of the influence area of ​​each exploration hole based on the base load thickness ratio of each exploration hole, and divide the coal mining face into a plurality of subareas based on the mine pressure intensity level of the influence area of ​​each exploration hole; Based on the mine pressure intensity level of each of the sub-areas, the roof fracturing plan of each of the sub-areas is determined.

2. The method for differentiated roof fracturing in a mine according to claim 1, characterized in that: The step of determining the mine pressure intensity level of the influence area of ​​each exploration hole based on the base load thickness ratio of each exploration hole comprises: For an exploration hole with a base load thickness ratio less than or equal to 1.5, the mine pressure intensity level of the influence area of ​​the exploration hole is determined as a strong mine pressure level; For an exploration hole with a base load thickness ratio greater than 1.5 and less than or equal to 2, the mine pressure intensity level of the influence area of ​​the exploration hole is determined as a medium mine pressure level; For an exploration hole with a base load thickness ratio greater than 2, the mine pressure intensity level of the influence area of ​​the exploration hole is determined as a weak mine pressure level.

3. The method for differentiated roof fracturing in a mine according to claim 1 or 2, characterized in that: Determining the roof fracturing scheme of each partition based on the mine pressure intensity level of each partition includes: For a zone with a strong mine pressure intensity level, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in three hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 4; For a zone with a medium mine pressure intensity level, the roof fracturing scheme of the zone is determined as follows: directional drilling is arranged in two hard rock layers in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 3; For the partition with a weak mine pressure intensity level, the roof fracturing plan of the partition is determined as follows: directional drilling is arranged in a hard rock layer in the roof collapse zone, and the number of directional drilling holes arranged in each hard rock layer is 2.

4. The method for differentiated roof fracturing in a mine according to claim 3, characterized in that: The depth of the directional drilling is 500 meters to 600 meters.

5. The method for differentiated roof fracturing in mine areas according to claim 3, characterized in that: The thickness of the roof collapse zone is 10 times the thickness of the mined coal seam.

6. The method for differentiated roof fracturing in a mine according to claim 1 or 2, characterized in that: The coal mining face is divided into a plurality of zones based on the mine pressure intensity level of the influence zone of each exploration hole, including: A plurality of adjacent impact areas with the same mine pressure intensity level are taken as one subarea, and the impact areas with different mine pressure intensity levels are divided into different subareas.

7. A differentiated roof fracturing device for underground mines, characterized in that: include: A statistical module is used to count the full-hole depth rock layer thickness information of each exploration hole based on the ground exploration hole column chart of the coal mining working face; A first determination module is used to determine the base load thickness ratio of each exploration hole based on the full-hole depth rock layer thickness information of each exploration hole; A zoning module, for determining the mine pressure intensity level of the influence zone of each exploration hole based on the base load thickness ratio of each exploration hole, and dividing the coal mining working face into a plurality of zones based on the mine pressure intensity level of the influence zone of each exploration hole; The second determination module is used to determine the roof fracturing scheme of each of the partitions based on the mine pressure intensity level of each of the partitions.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the differentiated roof fracturing method for underground mine zones is implemented as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for differentiated roof fracturing in different zones in a mine is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for differentiated roof fracturing in different zones in a mine is implemented.

Images