Coal seam blasting pressure relief and energy storage method

Abstract

The invention discloses a coal seam blasting pressure relief and energy storage method which comprises the steps of S1, determining the stress concentration range of a coal seam in a roadway, drilling the coal seam to form a blast hole, S2, installing a blasting piece and an energy storage piece in the blast hole, and blasting the blast hole to relieve pressure of the coal seam, s3, the energy storage part is connected with a power supply part in the roadway, so that the energy storage part supplies power to the power supply part. The coal seam blasting pressure relief and energy storage method has the advantages of simple steps, high energy recovery efficiency and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of safe mining of coal mines, and in particular to a method for blasting and unloading pressure and storing energy by controllable rock burst in coal seams of coal mines. Background Art

[0002] Rock burst is a dynamic disaster caused by the sudden release of elastic strain energy within the coal rock during coal mining. This disaster often leads to tunnel collapse, equipment damage, and casualties, seriously threatening coal mine production safety.

[0003] In related technologies, coal seam blasting decompression methods primarily reduce stress concentration by releasing elastic energy in the coal and rock mass. However, the impact energy generated by the explosive blasting during blasting, as well as the elastic energy released by the surrounding rock during working face excavation and mining, is not effectively recovered and utilized, resulting in energy waste. Furthermore, due to the mismatch between drilling design parameters (such as hole depth, spacing, and angle) and stress concentration areas, the decompression effect is suboptimal, making it difficult to completely eliminate disaster risks. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention proposes a coal seam blasting decompression energy storage method with simple steps, reasonable parameter settings, and the ability to recover energy.

[0006] According to an embodiment of the present invention, the coal seam blasting pressure relief energy storage method includes: S1: determining the stress concentration range of the coal seam in the tunnel, and drilling the coal seam to form a blasting hole; S2: installing a blasting component and an energy storage component in the blasting hole, blasting the blasting hole to relieve the pressure on the coal seam, and the energy storage component absorbs the impact energy generated by the blasting of the coal seam blasting explosives and the elastic energy released by the surrounding rock during working face excavation and mining; S3: connecting the energy storage component to the power supply component in the tunnel so that the energy storage component supplies power to the power supply component.

[0007] The coal seam blasting pressure relief and energy storage method of an embodiment of the present invention is provided with steps S1 to S3, in which the stress in the coal rock body is relieved by the blasting parts, and the mechanical energy generated by the explosion of the blasting parts and the controllable coal cannon of the coal rock body is absorbed by the energy storage parts and converted into electrical energy to power the lighting and monitoring systems in the tunnel, thereby effectively recovering and utilizing the stress energy and realizing the dual synergy of pressure relief and energy storage.

[0008] In some embodiments, a drilling rig is used to drill the coal seam to form the blasting holes. There are multiple blasting holes, which are spaced apart along the length of the tunnel. Each blasting hole is provided with the blasting component and the energy storage component.

[0009] In some embodiments, the distance between two adjacent blasting holes is 4m-6m, and the distance between the blasting hole and the tunnel floor is 1.2m-2m.

[0010] In some embodiments, the depth of the blasting hole is 11m-13m, and the diameter of the blasting hole is 40mm-44mm.

[0011] In some embodiments, the blasting hole includes a first section and a second section that are connected to each other, one end of the first section is connected to one end of the second section, the other end of the first section forms the mouth of the blasting hole, and the other end of the second section forms the bottom of the blasting hole, the blasting component is arranged in the second section, the energy storage component is arranged in the blasting hole and at least part of the energy storage component is located in the second section.

[0012] In some embodiments, there are multiple energy storage components, all of which are arranged in the blasting hole and spaced apart along the length direction of the blasting hole. The multiple energy storage components are electrically connected in sequence and are all connected to the power supply component in the tunnel.

[0013] In some embodiments, the distance between two adjacent energy storage components is 0.5 m to 1 m.

[0014] In some embodiments, in step S3, the energy storage component is electrically connected to the power supply component via a microgrid, so that energy in the energy storage component is stored in the microgrid and the power supply component is powered by the microgrid.

[0015] In some embodiments, the coal seam blasting decompression energy storage method further includes step S4: determining the stress concentration area of ​​the coal seam in the tunnel based on the energy stored in the energy storage component in the blasting hole, and blasting the coal seam in the tunnel again to store energy.

[0016] In some embodiments, in step S1, a stress sensor or an optical fiber sensor is used to determine the stress concentration range of the rock burst coal seam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of coal seam blasting pressure relief energy storage according to an embodiment of the present invention.

[0018] Figure 2 This is a distribution diagram of blasting holes for coal seam blasting pressure relief and energy storage according to an embodiment of the present invention.

[0019] Figure 3 It is a top view of a blasting hole for coal seam blasting pressure relief and energy storage according to an embodiment of the present invention.

[0020] Roadway 1; roof 11; floor 12; coal seam 13;

[0021] Blasting hole 2; first section 21; second section 22; blasting component 3; energy storage component 4. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] The coal seam blasting pressure relief energy storage method according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, the coal seam blasting decompression energy storage method according to an embodiment of the present invention includes steps S1 and S2.

[0025] S1: Determine the stress concentration range of the coal seam 13 in the tunnel 1, and drill a hole in the coal seam 13 to form a blasting hole 2. Specifically, Figure 1-Figure 3 As shown, first, using stress monitoring equipment (such as stress sensors, fiber optic sensors, etc.) or numerical simulation techniques, the stress distribution of the coal seam 13 surrounding the roadway 1 is analyzed to identify stress concentration areas. These areas typically exhibit high stress and are prone to disasters such as coal and gas outbursts or rock bursts. Based on these stress concentration areas, a design is then made for the layout of blastholes 2. The spacing, depth, and diameter of blastholes 2 are optimized based on the thickness of the coal seam 13, the stress level, and the geological conditions to ensure effective pressure relief. Finally, blastholes 2 are constructed in the stress concentration areas of the coal seam 13.

[0026] S2: Install the blasting element 3 and the energy storage element 4 in the blasting hole 2. The blasting hole 2 is blasted to relieve the pressure on the coal seam 13. The energy storage element 4 absorbs the mechanical energy generated by the blasting of the coal seam 13 and the controllable coal cannon of the coal rock mass. Figure 1-Figure 3 As shown, an explosive component 3 (such as explosives, blasting tubes, etc.) is installed in the blasting hole 2. The number and arrangement of the explosive components 3 need to be designed according to the depth of the blasting hole 2 and the stress state of the coal seam 13 to ensure that the blasting energy can effectively release the concentrated stress in the coal seam 13. An energy storage component 4 (such as a pressure-generating power generation material, etc.) is installed in the blasting hole 2 at the same time. The function of the energy storage component 4 is to absorb the pressure energy released during the blasting process and convert it into a storable energy form (in other words, the mechanical energy generated by the blasting of the explosive component 3 and the controllable coal cannon in the coal rock mass is converted into electrical energy), which is then used for subsequent utilization or dissipation. The explosive component 3 is activated to blast the blasting hole 2. The shock wave and energy release generated by the blasting can destroy the stress concentration state of the coal body, achieve pressure relief of the coal seam 13, and reduce the risk of coal and gas outburst or rock burst. In addition, during the blasting process, the energy storage component 4 absorbs and stores the released energy in real time, so that the energy is effectively recovered.

[0027] S3: The energy storage component 4 is connected to the power supply component in the lane 1 so that the energy storage component 4 supplies power to the power supply component. Specifically, the output end of the energy storage component 4 is connected to the power supply component (such as a battery, a distribution box, lighting equipment, monitoring equipment, etc.) in the lane 1 through a cable or a conductive line to form a complete power supply circuit. As a result, the electric energy converted by the energy storage component 4 can be distributed according to the actual needs in the lane 1. For example, it can power the lighting system of lane 1 to improve the working environment. Or it can provide continuous power to monitoring equipment (such as gas sensors, stress monitors, etc.) to ensure real-time monitoring. Or it can provide auxiliary power for other electromechanical equipment (such as ventilators, water pumps, etc.) to improve the operating efficiency of the equipment.

[0028] The coal seam blasting pressure relief and energy storage method of the embodiment of the present invention is provided with steps S1 to S3, and energy storage components 4 and blasting components 3 are arranged in the blasting hole 2. The energy storage component 4 can convert the mechanical energy generated by the explosion of the blasting component 3 and the controllable coal cannon of the coal rock into electrical energy to supply power to the lighting and monitoring systems. This not only ensures the pressure relief effect and effectively reduces the degree of stress concentration, but also converts the mechanical energy generated by the coal rock into electrical energy for storage and utilization, thereby improving the utilization rate of energy and realizing the dual synergy of pressure relief and energy storage.

[0029] In some embodiments, a drilling rig is used to drill a coal seam 13 to form a blasting hole 2. There are multiple blasting holes 2, which are spaced apart along the length of the tunnel 1. Each blasting hole 2 is provided with a blasting element 3 and an energy storage element 4. Specifically, Figure 1-Figure 3 As shown, the coal seam 13 is drilled and multiple blasting holes 2 are formed along the front-to-back direction. The spaced arrangement of the multiple blasting holes 2 can effectively cover the stress concentration area in the length direction of the tunnel 1, avoiding disasters such as coal and gas outbursts or rock bursts caused by local stress concentration. The blasting component 3 and the energy storage component 4 in each blasting hole 2 work together. The blasting component 3 releases energy to relieve the pressure on the coal seam 13, and the energy storage component 4 absorbs and stores energy.

[0030] In some embodiments, the distance between two adjacent blasting holes 2 is 4m-6m. Figure 1-Figure 3 As shown, the spacing between two adjacent blasting holes 2 can be any of 4m, 5m, 6m, etc. When the spacing is less than 4m, the stress release areas between the blasting holes 2 overlap, resulting in energy waste and even possible additional damage to the surrounding rock of the roadway 1 due to the superposition of blasting energy. Since the stress concentration area in the coal seam 13 usually has a certain range, when the spacing is greater than 6m, the excessive spacing between adjacent blasting holes 2 will lead to insufficient stress release, forming a pressure relief blind zone, and failing to effectively cover the entire stress concentration area. Therefore, a spacing of 4m-6m can ensure that the blasting energy of the explosive components 3 in each blasting hole 2 is exerted within a reasonable range, without interfering with each other, while effectively covering the stress concentration area.

[0031] In some embodiments, the distance between the blasting hole 2 and the bottom plate 12 of the tunnel 1 is 1.2m-2m. Figure 1-Figure 3 As shown, the height of the blast hole 2 can be any one of 1.2m, 1.4m, 1.6m, 1.8m, 2m, etc. When the blast hole 2 is too close to the floor 12 of the tunnel 1 (less than 1.2m), the shock wave generated by the blasting will act on the floor 12, causing the rock formation of the floor 12 to crack or deform, affecting the stability and safety of the tunnel 1. When the distance is too far (greater than 2m), the blasting energy cannot fully release the concentrated stress near the floor 12, reducing the pressure relief effect. Therefore, a height of 1.2m-2m for the blast hole 2 can ensure the pressure relief effect while avoiding damage to the structure of the floor 12 of the tunnel 1.

[0032] In some embodiments, the blasthole 2 has a depth of 11m-13m. Specifically, the depth of the blasthole 2 can be any of 11m, 12m, and 13m. A blasthole 2 that is too shallow (e.g., less than 10m) cannot fully release the concentrated stress in the deep coal seam 13, resulting in an unsatisfactory pressure relief effect. A blasthole 2 that is too deep (e.g., exceeding 15m) may increase construction difficulty and cost. Therefore, a hole depth of 11m-13m can fully release the concentrated stress in the deep coal seam 13, while also reducing the construction difficulty and cost of the blasthole 2.

[0033] In some embodiments, the aperture of the blasting hole 2 is 40mm-44mm. Specifically, the aperture of the blasting hole 2 can be any one of 40mm, 41mm, 42mm, 43mm, 44mm, etc. When the aperture of the blasting hole 2 is too small (such as less than 40mm), it will cause trouble in installing the blasting part 3 and the energy storage part 4. When the aperture of the blasting hole 2 is too large (such as more than 44mm), it will cause poor contact between the energy storage part 4 and the hole wall, affecting the energy absorption effect. Therefore, the aperture of 40mm-44mm can adapt to the construction capacity of most drilling rigs while ensuring the pressure relief effect and energy absorption effect. As a result, the design parameters of the blasting hole 2 (such as hole depth, spacing, angle, etc.) match the stress concentration area, improve the pressure relief effect, and eliminate the risk of disasters.

[0034] In some embodiments, the blasting hole 2 includes a first section 21 and a second section 22 that are connected to each other, one end of the first section 21 is connected to one end of the second section 22, the other end of the first section 21 forms the opening of the blasting hole 2, and the other end of the second section 22 forms the bottom of the blasting hole 2. The blasting element 3 is arranged in the second section 22, and the energy storage element 4 is arranged in the blasting hole 2 and at least part of the energy storage element 4 is located in the second section 22. Specifically, as Figure 1As shown, the first section 21 is the blocking section, and the second section 22 is the charging section. The first section 21 is located at the left end of the second section 22. The blasting element 3 is installed in the second section 22 and near the bottom of the hole. The blasting element 3 releases energy through blasting, destroying the stress concentration state of the coal body, ensuring that the blasting energy directly acts on the stress concentration area deep in the coal seam 13, achieving efficient pressure relief and reducing the risk of coal and gas outburst or rock burst. The energy storage element 4 (such as a hydraulic energy storage device or a spring energy storage mechanism) is installed in the blasting hole 2 to ensure that the energy storage element 4 fully absorbs the mechanical energy generated by the blasting of the blasting element 3 and the controllable coal gun released by the coal and rock mass, and the energy storage element 4 converts it into electrical energy storage.

[0035] In some embodiments, there are multiple energy storage components 4, and the multiple energy storage components 4 are all arranged in the blasting hole 2 and spaced apart along the length direction of the blasting hole 2. The multiple energy storage components 4 are electrically connected in sequence and are all connected to the power supply component in the tunnel 1. Specifically, Figure 1-Figure 3 As shown, multiple energy storage components 4 are arranged in sequence along the left and right directions in the blasting hole 2. As a result, multiple energy storage components 4 can evenly absorb the mechanical energy generated by the blasting of the blasting component 3 and the controllable coal cannon in the coal rock mass, and multiple energy storage components 4 can cover the entire length range of the blasting hole 2, ensuring the comprehensiveness and efficiency of energy absorption. Multiple energy storage components 4 are connected in sequence through electrical connections (such as cables or conductive lines), which can integrate the energy absorbed by each energy storage component 4 into a unified circuit for subsequent use. The design of multiple energy storage components 4 improves the stability of the system. Even if one energy storage component 4 fails, the other energy storage components 4 can still work normally, ensuring the continuity of energy absorption and power supply.

[0036] In some embodiments, the distance between two adjacent energy storage components 4 is 0.5m-1m. Figure 1-Figure 3 As shown, the spacing between two adjacent energy storage components 4 can be any range, such as 0.5m, 0.7m, 0.9m, or 1m. If the spacing between two energy storage components 4 is too large (e.g., exceeding 1m), some energy may not be absorbed and wasted. If the spacing between two energy storage components 4 is too small (e.g., less than 0.5m), the energy absorbed by multiple energy storage components 4 may overlap, reducing energy utilization efficiency. Therefore, a spacing of 0.5m-1m can provide sufficient installation space for each energy storage component 4, ensuring its normal operation while avoiding mutual interference between energy storage components 4.

[0037] In some embodiments, in step S3, the energy storage device 4 is electrically connected to the power supply device via the microgrid, so that the energy in the energy storage device 4 is stored in the microgrid and the power supply device is powered by the microgrid. Thus, the electrical energy in the energy storage device 4 is distributed to each power supply device via the microgrid's power distribution unit, ensuring that each device receives the required power, thereby ensuring the safe operation of the roadway 1.

[0038] In some embodiments, the coal seam blasting decompression and energy storage method further includes step S4: determining a stress concentration zone in the coal seam 13 within the tunnel 1 based on the energy stored in the energy storage element 4 within the blasthole 2, and then performing blasting energy storage on the coal seam 13 within the tunnel 1 again. Specifically, the microgrid's intelligent control unit or external monitoring equipment collects and analyzes energy data stored in the energy storage element 4 in real time, and determines the strength of the stress concentration zone in the coal seam 13 based on the changing trend of the energy data absorbed by the energy storage element 4. For example, areas where energy storage components 4 store high amounts of energy typically correspond to stress concentration zones. Combining energy data with geological conditions (such as the thickness and lithology of coal seam 13), numerical simulation or stress monitoring techniques are used to identify new stress concentration zones within tunnel 1. If changes are found in these stress concentration zones (e.g., stress shifts to other areas), targeted treatment is required for these new stress concentration zones. Within these identified stress concentration zones, blasting holes 2 are rearranged and blasting components 3 and energy storage components 4 are installed, following steps S1-S3, to perform blasting decompression, releasing the concentrated stress in coal seam 13. Simultaneously, energy released during the blasting process is absorbed by energy storage components 4. The energy absorbed by energy storage components 4 is stored in the microgrid and distributed to the power supply components, achieving energy recycling.

[0039] In some embodiments, in step S1, a stress sensor or fiber optic sensor is used to determine the stress concentration range of the rock burst coal seam 13. Specifically, the stress sensor or fiber optic sensor collects stress data in the coal seam 13 in real time and transmits the data to a data processing system, thereby improving the accuracy and reliability of the detection.

[0040] The coal seam blasting pressure relief energy storage method according to an embodiment of the present invention is described in detail below:

[0041] (1) Preliminary determination of the stress concentration range of the rock burst coal seam through stress, optical fiber and other monitoring methods.

[0042] (2) Implement coal seam blasting and pressure relief drilling to ensure that the implementation area covers the coal seam stress concentration area.

[0043] (3) During the period when the blasting element 3 is loaded into the blasting hole 2, the energy storage element 4 is continuously arranged in the pressure relief borehole along the direction of the blasting hole 2. The blasting of the blasting element 3 forms cracks to achieve the purpose of coal seam pressure relief, and the energy accumulated in the coal rock mass is released in stages in the form of small-energy controllable coal cannons. The mechanical energy generated by the blasting of the blasting element 3 and the controllable coal cannon released by the coal rock mass is converted into electrical energy storage through the power generation material.

[0044] (4) The stored electrical energy is used to establish a mine microgrid to power the underground lighting and monitoring systems, thereby recycling the energy released by the blasting component 3 and the coal and rock mass. At the same time, based on the power generation of the energy storage component 4 at different depths, the stress concentration area is re-determined and the blasting drilling pressure relief parameters are optimized.

[0045] This embodiment takes a rock burst coal seam in a mine as an example. The coal seam is 8m thick, the excavation tunnel is 5.4m wide and 3.5m high, and introduces a blasting pressure relief energy storage method.

[0046] This embodiment first conducts a preliminary measurement of the stress concentration area of ​​the existing coal seam, implements blasting holes 2 to cover the stress concentration area, blasts and cracks the coal seam to achieve the purpose of coal seam pressure relief, and the mechanical energy generated by the blasting of the blasting piece 3 and the controllable coal cannon is converted into electrical energy storage through the power generation material.

[0047] The specific implementation method is as follows: the rock burst coal seam is decompressed by blasting, with a hole depth of 12m, a hole diameter of 42mm, a hole height of 1.2m-2m from the roadway floor, a hole spacing of 4m-6m, and a single row arrangement. After the blasting hole 2 is completed, energy storage components 4 are arranged in the borehole during the charging period, with the energy storage components 4 arranged at a spacing of 0.5m-1m. Blasting drilling decompression measures are continuously carried out in the mining-affected area of ​​the working face. The blasting-induced cracking of the coal body reduces the degree of stress concentration, allowing the large energy accumulated in the coal rock body to be released in the form of small energies in stages through the controllable coal gun. The energy released by the surrounding rock is captured by the power generation material, and the mechanical energy and electrical energy are stored, thereby achieving the dual synergy of decompression and energy storage.

[0048] In summary, the coal seam blasting pressure relief and energy storage method, the coal seam blasting pressure relief and pressure-generated power generation measures taken can effectively reduce the stress concentration level, convert the mechanical energy generated by the coal rock mass into electrical energy storage and utilization, and achieve the dual synergy of pressure relief and energy storage.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0051] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coal seam blasting pressure relief energy storage method, characterized in that: include: S1: determining the stress concentration range of the coal seam in the roadway, and drilling holes in the coal seam to form blasting holes; S2: installing a blasting element and an energy storage element in the blasting hole, blasting the blasting hole to decompress the coal seam, and the energy storage element absorbing the pressure energy of the decompression of the coal seam; S3: The energy storage component is connected to the power supply component in the tunnel so that the energy storage component supplies power to the power supply component.

2. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: The coal seam is drilled by using a drilling rig to form the blasting holes. There are multiple blasting holes, which are spaced apart along the length direction of the tunnel. The blasting component and the energy storage component are provided in each blasting hole.

3. The coal seam blasting pressure relief energy storage method according to claim 2, characterized in that: The distance between two adjacent blasting holes is 4m-6m, and the distance between the blasting hole and the tunnel floor is 1.2m-2m.

4. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: The depth of the blasting hole is 11m-13m, and the diameter of the blasting hole is 40mm-44mm.

5. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: The blasting hole includes a first section and a second section that are connected to each other, one end of the first section is connected to one end of the second section, the other end of the first section forms the opening of the blasting hole, and the other end of the second section forms the bottom of the blasting hole, the blasting component is arranged in the second section, and the energy storage component is arranged in the blasting hole and at least part of the energy storage component is located in the second section.

6. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: There are multiple energy storage components, all of which are arranged in the blasting hole and spaced apart along the length direction of the blasting hole. The multiple energy storage components are electrically connected in sequence and are all connected to the power supply component in the tunnel.

7. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: The distance between two adjacent energy storage components is 0.5m-1m.

8. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: In step S3, the energy storage component is electrically connected to the power supply component via a microgrid, so that energy in the energy storage component is stored in the microgrid and the power supply component is powered by the microgrid.

9. The coal seam blasting pressure relief energy storage method according to claim 1, characterized in that: The method further includes step S4: determining the stress concentration area of ​​the coal seam in the tunnel according to the energy stored in the energy storage component in the blasting hole, and blasting the coal seam in the tunnel again to store energy.

10. The coal seam blasting pressure relief energy storage method according to claim 9, characterized in that: In step S1, a stress sensor or an optical fiber sensor is used to determine the stress concentration range of the rock burst coal seam.

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