Multi-channel segmented micro-differential rock breaking system and method based on high-strength electric knock technology

Abstract

The application provides a multi-channel segmented differential rock breaking system and method based on high-strength electric detonation technology, the rock breaking system comprises a plurality of discharge electrodes, a plurality of high-voltage electric energy storage containers and a power supply source for providing electric energy, the plurality of discharge electrodes are distributed in the detonation hole at intervals, the plurality of high-voltage electric energy storage containers are arranged in parallel and electrically connected with the output end of the power supply source, and the plurality of discharge electrodes are also arranged in parallel and electrically connected with the output end of the plurality of high-voltage electric energy storage containers. The millisecond delay characteristics of the plurality of high-voltage electric energy storage containers and the intelligent millisecond delay switch are utilized to realize controllable explosion energy and ensure high accuracy of energy output, and the segmented arrangement of the discharge electrodes in the detonation hole is utilized to realize multi-layer rock bodies with different energy segmented differential fracturing strength, which is beneficial to the research on the millisecond superposition effect of the shock wave based on the high-strength electric detonation technology and the research on the relationship between the multi-layer rock bodies and the explosion energy control and the segmented differential action.

Description

Technical Field

[0001] This invention belongs to the field of rock fracturing technology, specifically relating to a multi-channel segmented micro-differential rock breaking system and method based on high-intensity electric blasting technology. Background Technology

[0002] With the continuous improvement of science and technology in my country's mining of mineral resources, a large number of new rock-breaking technologies in open-pit mining are gradually replacing explosive rock-breaking. Among them, carbon dioxide fracturing, air-energy expansion fracturing, hydraulic fracturing, and ultrasonic fracturing are all applied in the field of geotechnical engineering. The above methods have high requirements for the equipment and processes used. For example, carbon dioxide fracturing and air-energy expansion fracturing require low temperature and electric shock environments, hydraulic fracturing wastes a lot of water resources and has high requirements for internal pressure, and ultrasonic fracturing has low energy and limited range. In summary, the current rock-breaking technology still faces many challenges in its large-scale engineering application, and there is an urgent need for a safe, efficient, green and controllable rock-breaking method.

[0003] Rock-breaking methods based on electric blasting technology can solve problems faced in open-pit mining, such as environmental pollution (explosive explosions), low efficiency (carbon dioxide fracturing and air-energy expansion fracturing), and high economic losses (materials and manpower). For example, a method for coal roadway excavation using pulse blasting waves to induce fracturing and enhance permeability, disclosed in document 201510179635.7, uses high-energy pulse blasting waves generated by a high-voltage electric pulse generator to act on the coal seam, causing numerous coal seam fractures. However, this method only uses one high-voltage electric pulse generator, resulting in a limited fracturing range and poor fracturing effect. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art. The first objective of the present invention is to provide a multi-channel segmented micro-differential rock breaking system based on high-intensity electric blasting technology. The second objective of the present invention is to provide a rock breaking method based on the aforementioned rock breaking system.

[0005] To achieve the first objective mentioned above, the present invention adopts the following technical solution: a multi-channel segmented micro-differential rock breaking system based on high-intensity electric detonation technology, wherein at least one detonation hole is constructed in the rock mass. The rock breaking system includes multiple discharge electrodes capable of releasing different energies, a fixing device for fixing the multiple discharge electrodes in the detonation hole, multiple high-voltage electric energy storage containers with adjustable energy storage, and a power supply for providing electrical energy. The multiple discharge electrodes can be distributed at intervals along the length direction of the detonation hole in the detonation hole. At least one discharge electrode is arranged in each detonation hole corresponding to each layer of rock mass. When the number of detonation holes is two or more, multiple discharge electrodes are provided in each detonation hole. Multiple high-voltage electric energy storage containers are arranged in parallel and electrically connected to the output end of the power supply. An on / off switch for controlling the on / off is provided upstream of the input end of each high-voltage electric energy storage container. Multiple discharge electrodes are also arranged in parallel and electrically connected to the output ends of multiple high-voltage electric energy storage containers respectively. Each high-voltage electric energy storage container is connected to at least one discharge electrode. An intelligent millisecond delay switch for controlling the on / off is provided upstream of the input end of each discharge electrode.

[0006] The above technical solution utilizes the millisecond delay characteristics of multiple high-voltage electric energy storage containers and intelligent millisecond delay switches to achieve controllable explosion energy and ensure high accuracy of energy output. Furthermore, by leveraging the segmented arrangement of discharge electrodes within the detonation hole, it enables the fracturing of multi-layered rock masses with varying energy levels through segmented differential fracturing. This is beneficial for studying the millisecond superposition effect of shock waves based on high-intensity electro-detonation technology, and for investigating the relationship between multi-layered rock masses, explosion energy control, and segmented differential effects. This invention can achieve energy matching for different rock hardnesses and can safely regulate the electro-detonation energy to fracture rocks, realizing an innovation in rock breaking technology for open-pit mining.

[0007] In a preferred embodiment of the present invention, the output terminal of the power supply is connected to a power supply cable, and the power supply cable is provided with a system main switch.

[0008] The above technical solution involves using the system's main switch to start / stop the rock-breaking system of this invention.

[0009] In a preferred embodiment of the present invention, multiple high-voltage energy storage containers are connected to the output terminal of a power supply via multiple first cables arranged in parallel, and multiple discharge electrodes are connected to multiple high-voltage energy storage containers via multiple second cables arranged in parallel.

[0010] In the above technical solution, the first cable is used to transmit the electrical energy supplied by the power source to the high-voltage energy storage container for storage, and the second cable is used to transmit the electrical energy in the high-voltage energy storage container to the discharge electrode for release.

[0011] In a preferred embodiment of the present invention, the rock-breaking system further includes a cable protection device made of high-strength impact-resistant material. The cable protection device is fixed in the detonation hole by a fixing device. The cable protection device includes a support bar and a plurality of fixing discs fixed on the support bar, which are arranged in a one-to-one correspondence with a plurality of discharge electrodes. The fixing discs and the support bar have a laying channel for laying a second cable.

[0012] In the above technical solution, the second cable inside the detonation hole is laid in the cable laying channel, and the cable protection device is used to protect the second cable inside the detonation hole to prevent the shock wave formed by the release of electrical energy from the discharge electrode from damaging the second cable.

[0013] In a preferred embodiment of the present invention, when the detonation hole is a vertical hole, the discharge electrode is suspended below the fixed plate by a second cable; when the detonation hole is a horizontal hole, the discharge electrode is located downstream of its fixed plate and supported by a support bar.

[0014] In another preferred embodiment of the present invention, the fixing device is a protective sleeve that can be inflated and deflated, which is wrapped around and fixed to the support bar and the fixing plate. The inflation port of the protective sleeve is connected to the inflation device through an air pipe, which leads to the inflation in the protective sleeve. The outer wall of the protective sleeve can be tightly attached to the wall of the detonation hole to fix the discharge electrode in the detonation hole.

[0015] The above technical solution, where the protective sleeve is inflated and tightly adheres to the wall of the detonation hole, can prevent the cable protection device from impacting the wall of the detonation hole. Under the action of the protective sleeve tightly adhering to the wall of the detonation hole and the pulling action of the second cable, the cable protection device can be fixed, thereby fixing the position of the discharge electrode inside the detonation hole.

[0016] In another preferred embodiment of the invention, the protective sleeve is an inflatable sleeve made of plastic, or an airbag made of rubber.

[0017] In the above technical solution, the protective sleeve is an inflatable sleeve or airbag that is expandable. When it contracts, its volume decreases, making it easier to place in the detonation hole; when it expands, its volume increases, and its outer wall fits tightly against the wall of the detonation hole to fix the discharge electrode.

[0018] In another preferred embodiment of the present invention, the discharge electrode is a columnar high-voltage electrode.

[0019] To achieve the second objective mentioned above, the present invention adopts the following technical solution: a rock-breaking method based on a multi-channel segmented micro-differential rock-breaking system using high-intensity electric blasting technology, comprising the following steps:

[0020] S1, the system of claim 1 is arranged, wherein a discharge electrode is arranged every two meters in the detonation hole, and when the number of detonation holes is two or more, the hole spacing between two adjacent detonation holes is set to 3m-6m.

[0021] S2, set the delay time for different discharge electrodes. The delay time within the same detonation hole can be controlled within 5ms, and the delay time between adjacent detonation holes can be set to 10ms, 15ms, 20ms or 25ms.

[0022] S3 sets the output energy of different discharge electrodes. The greater the rock mass strength corresponding to the discharge electrode, the greater the output energy set.

[0023] The above technical solution addresses the issue that the energy required to form the same block size of multi-layered rock masses with varying strengths differs. Furthermore, by setting multiple discharge electrodes with a delay time, the energy of the electro-detonation shock can be superimposed, making it easier to fracture the rock mass.

[0024] In another preferred embodiment of the present invention, the actual output energy of different discharge electrodes is obtained according to the following formula:

[0025]

[0026] Among them, E i Let H be the actual output energy of the i-th discharge electrode, K be the correction coefficient, ε be the energy loss coefficient, E0 be the standard output energy of the discharge electrode, and h be the standard output energy of the discharge electrode. i Let δ be the thickness of the rock layer at the i-th discharge electrode. i Let l be the hardness of the rock layer at the i-th discharge electrode. i R is the length of the rock mass structural surface at the i-th discharge electrode, R is the fracture radius formed by the shock wave generated by all discharge electrodes in a single blast hole, and α is the energy superposition coefficient related to the delay time.

[0027] The above technical solution comprehensively confirms the actual output energy of the discharge electrode based on parameters such as rock lithology, rock layer thickness, rock layer hardness, and rock mass structural parameters, ensuring high accuracy of the discharge electrode's energy output and achieving controllable explosion energy.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of the structure of a multi-channel segmented micro-differential rock breaking system based on high-intensity electric blasting technology, as described in the embodiment.

[0031] Figure 2 This is a schematic diagram of the cable protection device in the embodiment.

[0032] Figure 3 This is a schematic diagram of the structure of the protective sleeve surrounding the cable protection device in the embodiment.

[0033] Figure 4 This is a schematic diagram of the structure in which multiple discharge electrodes from the embodiment are installed in an open-air detonation hole.

[0034] Figure 5 This is a schematic diagram of the topology of a high-strength electric detonation circuit.

[0035] The reference numerals in the accompanying drawings include: power supply 1, high voltage energy storage container 2, discharge electrode 3, power switch 4, intelligent millisecond delay switch 5, system main switch 6, power supply cable 7, first cable 8, second cable 9, cable protection device 10, support bar 11, fixing plate 12, fixing device (protective sleeve) 13, detonation hole 14. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0039] This invention provides a multi-channel segmented micro-differential rock breaking system and its rock breaking method based on high-intensity electric detonation technology, wherein at least one detonation hole 14 is constructed in the rock mass.

[0040] like Figures 1-4As shown, in a preferred embodiment, the rock-breaking system of the present invention includes multiple discharge electrodes 3 capable of releasing different energies, a fixing device 13 for fixing the multiple discharge electrodes 3 in the detonation hole 14, multiple high-voltage energy storage containers 2 with adjustable energy storage for storing high-voltage electrical energy, and a power supply 1 for providing electrical energy. The discharge electrodes 3 are columnar high-voltage electrodes. Under the action of the fixing device 13, the multiple discharge electrodes 3 can be distributed at intervals along the length direction of the detonation hole 14. At least one discharge electrode 3 is arranged in each detonation hole 14 corresponding to each layer of rock. When the number of detonation holes 14 is two or more, multiple discharge electrodes 3 are provided in each detonation hole 14. Multiple high-voltage energy storage containers 2 are connected in parallel and electrically connected to the output terminal of the power supply 1. Each high-voltage energy storage container 2 has an upstream power switch 4 for controlling the on / off state. Multiple discharge electrodes 3 are also connected in parallel and electrically connected to the output terminals of the multiple high-voltage energy storage containers 2 respectively. Each high-voltage energy storage container 2 is connected to at least one discharge electrode 3. Each discharge electrode 3 has an upstream intelligent millisecond delay switch 5 for controlling the on / off state.

[0041] This invention constructs detonation holes 14 within multi-layered rock masses. The number of high-voltage electric energy storage containers 2 is adapted to the number of rock layers in which the detonation holes 14 are located; that is, two high-voltage electric energy storage containers 2 are set for two rock layers, three high-voltage electric energy storage containers 2 are set for three rock layers, and so on. The energy stored in the high-voltage electric energy storage containers 2 is also adapted to the strength of the corresponding rock layer; the higher the rock strength, the greater the energy stored in the high-voltage electric energy storage containers 2. The electrical energy of the high-voltage electric energy storage containers 2 is released through the corresponding discharge electrodes 3. By setting up intelligent millisecond delay switches 5, the circuit on / off of the discharge electrodes 3 of each rock layer is controlled within the millisecond delay time. Utilizing the segmented arrangement of the discharge electrodes 3 within the detonation holes 14, multi-layered rock masses with different energy segments and varying micro-differential fracturing strengths are achieved, ensuring that the rock fracturing meets engineering requirements. In this invention, the output end of the power supply 1 is connected to a power supply cable 7, and the power supply cable 7 is equipped with a system master switch 6, which starts / stops the rock breaking system of this invention. Multiple high-voltage energy storage containers 2 are connected to the power supply cable 7 of the power supply 1 through multiple first cables 8 arranged in parallel, and the power switch 4 is installed on the first cable 8; multiple discharge electrodes 3 are connected to multiple high-voltage energy storage containers 2 through multiple second cables 9 arranged in parallel, and the intelligent millisecond delay switch 5 is installed on the second cable 9.

[0042] Preferably, the power supply cable 7, the first cable 8, and the second cable 9 are all flat cables, but are not limited to flat cables. Other shapes, such as cylindrical ones, can also carry high voltage current for a short time.

[0043] In this invention, the rock-breaking system also includes a cable protection device 10 made of high-strength impact-resistant material. The cable protection device 10 is fixed in the detonation hole 14 by a fixing device 13. The cable protection device 10 includes a support bar 11 and a plurality of fixing plates 12, each corresponding to a plurality of discharge electrodes 3, fixed on the support bar 11. The fixing plates 12 and the support bar 11 have a laying channel for laying a second cable 9. The second cable 9 located in the detonation hole 14 is embedded in the laying channel and protected by the cable protection device 10. When the detonation hole 14 is a vertical hole, the discharge electrode 3 is suspended below the fixing plate 12 by the second cable 9; when the detonation hole 14 is a horizontal hole, the discharge electrode 3 is located downstream of its fixing plate 12 and supported by the support bar 11.

[0044] Preferably, such as Figure 2 As shown, the second cable 9 can be pre-embedded in the cable protection device 10, leaving an end for connection with the discharge electrode 3. Then, the discharge electrode 3 is connected to the end of the second cable 9 according to the actual site conditions. The second cable 9 can be fixed in the cable protection device 10 to fix the distance between the fixing plate 12 and the discharge electrode 3; or the second cable 9 can move in the cable laying channel to adjust the distance between the discharge electrode 3 and the fixing plate 12.

[0045] like Figure 3 As shown, in a preferred embodiment, the fixing device 13 is an inflatable and deflated protective sleeve that wraps around and fixes the support bar 11 and the fixing plate 12. The protective sleeve 13 can be glued to the support bar 11 and the fixing plate 12. The protective sleeve 13 is an inflatable sleeve made of plastic or an air bladder made of rubber. The inflation port of the protective sleeve 13 is connected to the inflation device through an air tube, which leads to the inflation of the protective sleeve 13. When the protective sleeve 13 is inflated and expands, it fits tightly against the wall of the detonation hole, which can prevent the cable protection device 10 from hitting the wall of the detonation hole. Under the action of the protective sleeve 13 fitting tightly against the wall of the detonation hole 14 and under the pulling action of the second cable 9, the cable protection device 10 can be fixed, thereby fixing the position of the discharge electrode 3 in the detonation hole 14.

[0046] This invention is made from plastic and high-strength metal as raw materials. The manufacturing method is simple and easy to implement. This invention uses high-strength electric blasting technology to fracture rocks, which is a green and environmentally friendly rock breaking method.

[0047] Example 2

[0048] This embodiment provides a rock-breaking method based on the rock-breaking system of Embodiment 1, including the following steps:

[0049] S1. Arrange the rock breaking system of Example 1, wherein a discharge electrode 3 is arranged every two meters in each detonation hole 14. When the number of detonation holes 14 is two or more, based on the current maximum output energy of 600KJ, the hole spacing between two adjacent detonation holes 14 is set to 3m-6m.

[0050] S2. Set the delay time for different discharge electrodes 3. Specifically, the delay time can be set according to the method of setting the delay time for explosive rock breaking. The delay time within the same detonation hole 14 can be controlled within 5ms, and the delay time between adjacent detonation holes 14 can be set to 10ms, 15ms, 20ms or 25ms.

[0051] S3. Set the output energy of different discharge electrodes 3. The output energy is determined by comprehensively considering parameters such as rock lithology, rock layer thickness, rock layer hardness, and rock mass structural parameters. The greater the rock mass strength corresponding to discharge electrode 3, the greater the output energy is set.

[0052] The actual output energy of different discharge electrodes can be obtained using the following formula:

[0053]

[0054] Among them, E i Let H be the actual output energy of the i-th discharge electrode, K be the correction coefficient, ε be the energy loss coefficient, E0 be the standard output energy of the discharge electrode, and h be the standard output energy of the discharge electrode. i Let δ be the thickness of the rock layer at the i-th discharge electrode. i Let l be the hardness of the rock layer at the i-th discharge electrode. i R is the length of the rock mass structural surface at the i-th discharge electrode, R is the fracture radius formed by the shock wave generated by all discharge electrodes in a single blast hole, and α is the energy superposition coefficient related to the delay time.

[0055] During the process of fracturing the rock mass, there may be two or more rock masses with different lithologies within the same blast hole 14. That is, the strength of the rock mass corresponding to the position of the discharge electrode 3 will change. When the strength of the rock mass corresponding to the position of the discharge electrode 3 changes, more electrical energy is stored in the high-voltage electric energy storage container 2, and stronger energy is released by the discharge electrode 3 to fracture the rock mass, thereby improving the fracturing effect.

[0056] Among them, by Figure 4The delay time for fracturing rock masses can be simply explained as follows: First, if all discharge electrodes 3 in two detonation holes 14 are set to the same delay time, a simultaneous fracturing effect will occur. Second, if all discharge electrodes 3 in two detonation holes 14 are set to different delay times, a delayed fracturing effect will occur in the upper and lower regions and the left and right regions corresponding to the discharge electrodes 3. Third, if all discharge electrodes 3 in one detonation hole 14 are set to the same delay time, and all discharge electrodes 3 in the other detonation hole 14 are set to a different, identical delay time, an inter-hole delayed fracturing effect will occur.

[0057] This invention utilizes a cable protection device 10 to connect multiple discharge electrodes 3, fills the detonation hole 14 with water, and releases the electrical energy stored in multiple high-voltage electrical energy storage containers 2 sequentially from top to bottom through an intelligent millisecond delay switch 5. The electrical energy is then released by the discharge electrodes 3 to form different shock wave energies for rock layers of different intensities, thereby forming a multi-channel segmented micro-differential rock breaking system based on high-intensity electric detonation technology.

[0058] The working principle of the discharge electrode 3 releasing electrical energy to form shock wave energy is as follows: Figure 5 As shown, the work process can be described as follows:

[0059] (1) Conventional 220V or 380V power frequency AC power is converted into 520V DC power after passing through the AC receiver and being rectified by the rectifier bridge;

[0060] (2) The rectified DC power is inverted into 520V, 50KHz high-frequency AC power by the inverter bridge, then stepped up by LC resonance and transformer, and then rectified into high-voltage DC power by the high-voltage rectifier bridge.

[0061] (3) After receiving the charging voltage set by the main control unit, the charging control unit starts the inverter bridge and closes the K2 switch to charge the energy storage capacitor bank C1 (i.e., the high voltage energy storage container 2) with DC high voltage, and monitors its voltage value through the feedback resistors R1 and R2.

[0062] (4) When the charging voltage of the energy storage capacitor bank C1 reaches the working threshold, open switch K2, close switch K1, and turn on the discharge control switch to transfer the electrical energy stored in the energy storage capacitor bank C1 to both ends of the discharge electrode 3.

[0063] (5) When the field strength between the two poles of the discharge electrode 3 reaches the breakdown field strength of the water medium, the positive and negative poles of the discharge electrode 3 are connected and a discharge channel is formed between the two poles. At this time, the electrical energy of the energy storage capacitor bank C1 is released into the discharge channel and converted into mechanical energy to generate a shock wave effect, which ultimately destroys the surrounding coal and rock mass.

[0064] In the description of this specification, references to terms such as "preferred embodiment," "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multi-channel segmented micro-differential rock breaking system based on high-intensity electric detonation technology, wherein at least one detonation hole is constructed in the rock mass, characterized in that, The rock-breaking system includes multiple discharge electrodes capable of releasing different energies, a fixing device for fixing the multiple discharge electrodes in the detonation holes, multiple high-voltage energy storage containers with adjustable energy storage, and a power supply for providing electrical energy. The multiple discharge electrodes can be distributed at intervals in the detonation holes along the length direction of the detonation holes. At least one of the discharge electrodes is arranged in each detonation hole corresponding to each rock layer. When the number of detonation holes is two or more, multiple discharge electrodes are provided in each detonation hole. Multiple high-voltage energy storage containers are connected in parallel and electrically connected to the output terminal of the power supply. Each high-voltage energy storage container has an on / off switch upstream of its input terminal. Multiple discharge electrodes are also connected in parallel and electrically connected to the output terminals of multiple high-voltage energy storage containers respectively. Each high-voltage energy storage container is connected to at least one discharge electrode. Each discharge electrode has an intelligent millisecond delay switch upstream of its input terminal. Multiple high-voltage energy storage containers are connected to the output terminal of the power supply through multiple first cables arranged in parallel, and multiple discharge electrodes are connected to multiple high-voltage energy storage containers through multiple second cables arranged in parallel. The rock-breaking system also includes a cable protection device made of high-strength impact-resistant material. The cable protection device is fixed in the detonation hole by the fixing device. The cable protection device includes a support bar and multiple fixing plates fixed on the support bar, which are arranged in a one-to-one correspondence with multiple discharge electrodes. The fixing plates and the support bar have a laying channel for laying a second cable. The fixing device is a protective sleeve that can be inflated and deflated, which is wrapped around and fixed to the support bar and the fixing plate. The inflation port of the protective sleeve is connected to the inflation device through an air pipe, which leads to the inflation in the protective sleeve. The outer wall of the protective sleeve can be tightly attached to the wall of the detonation hole to fix the discharge electrode in the detonation hole.

2. The multi-channel segmented micro-differential rock breaking system based on high-intensity electro-blast technology according to claim 1, characterized in that, The output terminal of the power supply is connected to a power supply cable, and the power supply cable is equipped with a system main switch.

3. The multi-channel segmented micro-differential rock breaking system based on high-intensity electro-blast technology according to claim 1, characterized in that, When the detonation hole is a vertical hole, the discharge electrode is suspended below the fixed plate via a second cable; When the detonation hole is a horizontal hole, the discharge electrode is located downstream of its fixing plate and supported by the support bar.

4. The multi-channel segmented micro-differential rock breaking system based on high-intensity electro-blast technology according to claim 1, characterized in that, The protective sleeve is an inflatable sleeve made of plastic, or the protective sleeve is an airbag made of rubber.

5. The multi-channel segmented micro-differential rock breaking system based on high-intensity electro-blast technology according to any one of claims 1-4, characterized in that, The discharge electrode is a columnar high-voltage electrode.

6. A rock-breaking method based on a multi-channel segmented micro-differential rock-breaking system using high-intensity electro-detonation technology, characterized in that, Includes the following steps: S1, arranging the system according to claim 1, wherein a discharge electrode is arranged every two meters in the detonation hole, and when the number of detonation holes is two or more, the hole spacing between two adjacent detonation holes is set to 3m-6m; S2, set the delay time for different discharge electrodes. The delay time within the same detonation hole can be controlled within 5ms, and the delay time between adjacent detonation holes can be set to 10ms, 15ms, 20ms, or 25ms; S3 sets the output energy of different discharge electrodes. The greater the rock mass strength corresponding to the discharge electrode, the greater the output energy set.

7. The rock-breaking method according to claim 6, characterized in that, The actual output energy of different discharge electrodes is obtained using the following formula: ， in, This represents the actual output energy of the i-th discharge electrode. Here, ε is the correction factor, and ε is the energy loss factor. This is the standard output energy of the discharge electrode. Let be the thickness of the rock layer at the i-th discharge electrode. Let be the hardness of the rock layer at the i-th discharge electrode. R is the length of the rock mass structural surface at the i-th discharge electrode, R is the fracture radius formed by the shock wave generated by all discharge electrodes in a single blast hole, and α is the energy superposition coefficient related to the delay time.

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