High-altitude rock ground grounding net

Abstract

The present application relates to the technical field of grounding grid, and discloses a grounding grid for high-altitude rocky ground, which comprises a rocky area, a deep well is formed in the rocky area, a center grounding body is arranged in the deep well, a plurality of main branch grounding bodies are installed on the surface of the center grounding body, and the main branch grounding bodies are distributed in a radial manner at self-adaptive spatial angles to form a radial drainage network, through the integrated structure of the deep well in the rocky area, the center grounding body, the main branch grounding body, the connecting module and the solidified composite conductive layer, the core effect of low disturbance and high efficiency grounding of the high-altitude rocky ground is realized, the adaptability of the grounding system to the high-altitude rocky geology is improved, the drawbacks that the traditional grounding grid cannot adapt to the construction restriction of the rocky area and has low drainage efficiency are improved, and the radial drainage network can be constructed by fully utilizing the natural gaps of the rock, the grounding contact area is expanded, the power frequency grounding resistance and lightning high-frequency impact impedance are effectively reduced, and the lightning current and fault current can be quickly discharged into the ground.

Description

Technical Field

[0001] This invention relates to the field of grounding grid technology, specifically a grounding grid for high-altitude rocky terrain. Background Technology

[0002] In the fields of power and communication engineering, the grounding system is a core infrastructure to ensure the safe operation of equipment, lightning protection, and personnel safety. Its main function is to quickly discharge fault current and lightning current to the ground, reduce grounding impedance, suppress the rise of ground surface potential, and avoid equipment damage and electric shock accidents. High-altitude areas are important deployment areas for power transmission and communication base stations, and the reliability of their grounding systems directly determines the stable operation of the entire electrical system. However, high-altitude areas are mostly rocky landforms with hard rock and scarce soil, and the design and construction of grounding grids face many special challenges. Therefore, there is an urgent need for a special grounding structure adapted to the geological conditions of the region.

[0003] High-altitude rocky areas present significant limitations. The rock resistivity in these areas is extremely high, and the rock fissures are irregular and scattered. In addition, due to geographical constraints, the construction site is small, and large-scale excavation, blasting, and other construction methods are strictly prohibited to avoid damaging the mountain structure and ecological environment.

[0004] Traditional grounding grids rely on construction techniques such as large-area excavation to lay horizontal grounding electrodes, soil replacement to reduce resistance, or dynamic compaction. These techniques are simply not suitable for the limitations of high-altitude rocky areas. Existing technologies have significant shortcomings in grounding solutions for high-altitude rocky areas. Some solutions only use cage-type grounding structures, which have extremely low discharge efficiency and occupy a large space. They cannot be adapted to the narrow construction space of deep wells, nor can they make full use of natural rock crevices to achieve efficient discharge. Some solutions use blasting to break the rock mass in order to facilitate the laying of grounding electrodes. This not only seriously damages the mountain structure but also causes safety hazards such as rockfalls and landslides, which does not comply with construction specifications for high-altitude areas.

[0005] Therefore, this invention proposes a grounding grid for high-altitude rocky terrain. Summary of the Invention

[0006] The purpose of this invention is to provide a grounding grid for high-altitude rocky terrain to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a grounding grid for high-altitude rocky areas, comprising a rocky region, a deep well within the rocky region, a central grounding electrode within the deep well, and several main branch grounding electrodes mounted on the surface of the central grounding electrode, the main branch grounding electrodes being radially distributed in an adaptive spatial angle to form a radial discharge network, a connecting module installed between the central grounding electrode and the main branch grounding electrodes, the connecting module being used to adjust the angle of the main branch grounding electrodes so that the main branch grounding electrodes can adapt to and extend into the natural crevices of the rocky region, the gaps between the central grounding electrode, the main branch grounding electrodes and the rocky region being filled with a cured composite conductive layer, the cured composite conductive layer filling the gaps between the main branch grounding electrodes and the rocky region, bonding the grounding electrode and the rocky region into an integrated conductive structure, so that the rocky region participates in current discharge as a grounding current dissipation medium.

[0008] Preferably, the connection module includes a ball seat fixedly installed on the surface of the central grounding electrode, and a ball head fixedly installed at the end of the main branch grounding electrode. The ball head is rotatably embedded in the ball seat to realize the spatial angle adjustment of the main branch grounding electrode relative to the central grounding electrode.

[0009] Preferably, the connection module further includes a set screw for locking the ball head. The set screw is threaded to the ball seat and is used to press the ball head after the angle of the main branch grounding body is adjusted to the correct position, thereby achieving angle locking.

[0010] Preferably, the surface of the main branch grounding electrode is provided with a plurality of grooves, and a secondary branch grounding electrode is slidably assembled inside the grooves. The secondary branch grounding electrode can slide along the grooves to adapt to natural gaps of different widths and depths in the rock area, so as to realize the adaptive adjustment between the secondary branch grounding electrode and the gaps in the rock and soil.

[0011] Preferably, an elastic element is fixedly installed inside the chute, with one end of the elastic element fixedly connected to the inner wall of the chute and the other end fixedly connected to the end of the secondary branch grounding body.

[0012] Preferably, when not in contact with the inner wall of the rock or soil fissure in the rock area, the elastic element is in a naturally elongated state. When the secondary branch grounding body comes into contact with the inner wall of the rock or soil fissure and is squeezed, the elastic element is compressed, causing the secondary branch grounding body to retract inward along the groove, so that the secondary branch grounding body is always in close contact with the inner wall of the fissure.

[0013] Preferably, the main branch grounding electrode has a filling channel inside, the filling channel is connected to each slide groove, and the surface of the main branch grounding electrode is equipped with a filling interface that communicates with the filling channel. The filling interface is used to introduce a pressure medium into the filling channel to drive the secondary branch grounding electrode to extend outward along the slide groove.

[0014] Preferably, a matching groove and a boss are provided between the chute and the sub-branch grounding electrode to limit the extension stroke of the sub-branch grounding electrode and prevent the sub-branch grounding electrode from extending excessively and detaching from the chute.

[0015] Preferably, the cured composite conductive layer is made of a conductive composite material, which includes at least one of conductive resin, conductive cement, and conductive mortar.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the integrated structure of deep wells in the rocky area, central grounding electrode, main branch grounding electrode, connecting module, and solidified composite conductive layer, the core effect of low-disturbance and high-efficiency grounding in high-altitude rocky areas is achieved. This improves the adaptability of the grounding system to high-altitude rocky geology, overcomes the shortcomings of traditional grounding grids that cannot adapt to construction restrictions in rocky areas and have low discharge efficiency. It helps to make full use of natural rock fissures to build a radial discharge network, expand the grounding contact area, effectively reduce power frequency grounding resistance and high-frequency lightning impact impedance, and ensure that lightning current and fault current are quickly discharged to the ground. At the same time, the connecting module can adjust the angle of the main branch grounding electrode to adapt to irregular rock fissures. The solidified composite conductive layer bonds the grounding electrode to the rock as one, avoiding the damage to the mountain caused by large-scale excavation and blasting. It takes into account both construction convenience and ecological environmental protection, and is suitable for the scenario of scarce soil and limited construction space in high-altitude rocky areas, providing a reliable guarantee for the long-term stable operation of the grounding system.

[0017] 2. Through the nested structure of the main branch grounding electrode and the retractable secondary branch grounding electrode, the grounding electrode achieves an adaptive fitting effect to rock fissures of different widths and depths. This improves the contact density and effective contact area between the grounding electrode and the rock mass, and addresses the problems of poor fit and low discharge efficiency of traditional branch grounding electrodes. It helps to further reduce grounding impedance and high-frequency lightning impact impedance, and avoids grounding blind spots caused by irregular rock fissures. At the same time, the flexible buffering effect of the elastic element can adapt to the slight deformation of the rock, preventing the grounding electrode from bending or breaking due to stress concentration. This enhances the deformation resistance and long-term stability of the grounding structure, making it suitable for the complex environment of freeze-thaw cycles and geological micro-movements in high-altitude areas.

[0018] 3. Through the integral filling structure of the cured composite conductive layer, the grounding electrode and the rock area are integrated and bonded together, achieving a conductive connection. This improves the conductivity and structural integrity of the grounding system, and overcomes the defects of traditional grounding electrodes and rocks, such as air gaps and excessively high contact resistance. It helps eliminate potential contact problems and ensures long-term stability of the grounding impedance. The cured conductive layer possesses excellent corrosion resistance, freeze-thaw resistance, and hydrophobicity, resisting erosion from rainwater and temperature changes in high-altitude areas, extending the service life of the grounding grid. Furthermore, it eliminates the need for extensive soil removal and backfilling, adapting to the construction limitations of scarce soil and the inability to perform layered compaction at high altitudes, thus improving construction efficiency.

[0019] 4. Through the cooperative structure of the pressure-driven secondary branch grounding electrode and the filling channel, precise control of the extension length of the secondary branch grounding electrode and stable bonding effect are achieved. This improves the adaptability and bonding reliability of the grounding electrode to the rock gap, and addresses the problems of fatigue failure and insufficient bonding accuracy of elastic telescopic structures. It helps to accurately adapt to rock gaps of different widths and maximize the contact area. At the same time, the compressibility of the pressure medium can buffer the extrusion stress of the rock mass, and the one-way valve sealing and pressure-holding structure ensures long-term stable drive, avoiding problems such as movement jamming and sealing failure. This further improves the operational reliability and environmental adaptability of the grounding system, meeting the core requirements of high efficiency, stability, and low disturbance for grounding systems in high-altitude rocky areas. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the relationship between the main structure and the rock zone in Embodiment 1 of the present invention; Figure 2 This is a schematic plan view of the main structure in Embodiment 1 of the present invention; Figure 3 For the present invention Figure 2 Enlarged planar schematic diagram of the structure at point A; Figure 4 This is a partial planar schematic diagram of the main structure in Embodiment 2 of the present invention; Figure 5 This is a partial cross-sectional plan view of the main structure in Embodiment 2 of the present invention; Figure 6 For the present invention Figure 5 Enlarged planar schematic diagram of the structure at point B; Figure 7 This is a partial three-dimensional schematic diagram of the main structure in Embodiment 3 of the present invention; Figure 8 This is a partial cross-sectional plan view of the main structure in Embodiment 3 of the present invention; Figure 9 For the present invention Figure 8 Enlarged planar schematic diagram of the structure at point C.

[0021] In the picture: 1. Rock area; 2. Central grounding electrode; 3. Main branch grounding electrode; 31. Secondary branch grounding electrode; 32. Slide groove; 33. Elastic element; 34. Filling channel; 35. Filling interface; 4. Connecting module; 41. Ball seat; 42. Ball head; 43. Top screw; 5. Curing composite conductive layer. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] like Figure 1 As shown in Embodiment 1: A grounding grid for high-altitude rocky areas includes a rocky area 1, a deep well within the rocky area 1, a central grounding electrode 2 within the deep well, and several main branch grounding electrodes 3 mounted on the surface of the central grounding electrode 2. The main branch grounding electrodes 3 are arranged radially with adaptive spatial angles to form a radial discharge network. A connection module 4 is installed between the central grounding electrode 2 and the main branch grounding electrodes 3. The connection module 4 is used to adjust the angle of the main branch grounding electrodes 3 so that the main branch grounding electrodes 3 can adapt to and extend into the natural gaps in the rocky area 1. The gaps between the central grounding electrode 2, the main branch grounding electrodes 3, and the rocky area 1 are filled with a cured composite conductive layer 5. The cured composite conductive layer 5 fills the gaps between the main branch grounding electrodes 3 and the rocky area 1, bonding the grounding electrodes and the rocky area 1 into an integrated conductive structure, so that the rocky area 1 participates in current discharge as a grounding current dissipation medium.

[0024] like Figure 2 and Figure 3 As shown, the connection module 4 includes a ball seat 41 fixedly installed on the surface of the central grounding body 2, and a ball head 42 fixedly installed at the end of the main branch grounding body 3. The ball head 42 is rotatably embedded in the ball seat 41 to realize the spatial angle adjustment of the main branch grounding body 3 relative to the central grounding body 2.

[0025] like Figure 3 As shown, the connection module 4 also includes a set screw 43 for locking the ball head 42. The set screw 43 is threaded to the ball seat 41 and is used to press the ball head 42 after the angle of the main branch grounding body 3 is adjusted to the correct position, thereby achieving angle locking.

[0026] It should be noted that the cured composite conductive layer 5 is made of conductive composite material, which includes at least one of conductive resin, conductive cement, and conductive mortar.

[0027] It should be added that the central grounding body 2, the main branch grounding body 3, and the ball seat 41 and ball head 42 of the connecting module 4 are all made of conductive metal. The central grounding body 2 is a columnar structure extending along the deep well axis, and the main branch grounding body 3 is a rod-shaped structure extending radially outward. The ball seat 41 and ball head 42 of the connecting module 4 adopt a spherical mating structure, which can realize the free adjustment of the main branch grounding body 3 in multiple angles in the horizontal and vertical directions to adapt to the irregular and different orientations of natural gaps in the rock area 1, ensuring that the main branch grounding body 3 can fully extend into the gap and maximize the contact area with the rock area 1. The set screw 43 adopts a double bolt symmetrical arrangement structure, which can simultaneously press the ball head 42 from the upper and lower sides of the ball seat 41 to ensure the reliability and stability of the angle locking.

[0028] It should be added that the central grounding electrode 2, the main branch grounding electrode 3, and the ball seat 41, ball head 42, and set screw 43 of the connecting module 4 are all made of conductive metal. The central grounding electrode 2 is a columnar structure extending along the deep well axis, and the main branch grounding electrode 3 is a rod-shaped structure extending radially outward. The ball seat 41 and ball head 42 of the connecting module 4 adopt a spherical mating structure, which allows the main branch grounding electrode 3 to be freely adjusted at multiple angles in the horizontal and vertical directions to adapt to the irregular and differently oriented natural gaps in the rock area 1, ensuring that the main branch grounding electrode 3 can be fully extended. The material enters the gap to maximize the contact area with the rock area 1; the set screw 43 adopts a double bolt symmetrical arrangement structure, which can simultaneously press the ball head 42 from the upper and lower sides of the ball seat 41 to achieve temporary limiting and initial fixation during the installation stage, ensuring the stability of the main branch grounding body 3 during the filling process; after the cured composite conductive layer 5 is cured, the material will wrap and fill the gap between the ball seat 41, the ball head 42 and the set screw 43, forming a secondary permanent lock, further improving the structural stability and the reliability of the conductive connection, and avoiding loosening or poor contact during long-term use.

[0029] Specifically, this embodiment is designed for high-altitude rocky areas, which are characterized by hard rock, scarce soil, irregular rock fissures, extremely high resistivity, small construction sites, and prohibitions on large-scale excavation and blasting to damage the mountain. Therefore, traditional grounding grid construction methods such as large-scale excavation, soil replacement, and dynamic compaction cannot be used. Based on this, this embodiment adopts a low-disturbance approach that utilizes natural rock fissures to achieve high-efficiency and high-stability grounding.

[0030] It should be noted that, prior to construction, this embodiment requires preliminary exploration using ground-penetrating radar or borehole cameras to quantitatively detect the distribution, orientation, spatial dimensions, and development of fissures in and around the deep well. Based on the exploration data, the main branch grounding electrode 3 can be customized to improve its compatibility, or standardized, mass-produced components can be used to reduce construction costs. During customized processing, the length, quantity, and extension angle of the main branch grounding electrode 3 can be flexibly adjusted according to the depth, width, and orientation of the rock fissures to best fit the site geological conditions. Standardized components adopt a uniform specification design, which facilitates factory prefabrication and rapid on-site assembly, effectively shortening the construction cycle in harsh high-altitude environments, reducing on-site operational difficulties and safety risks, while ensuring the universality and interchangeability of the grounding grid structure to meet the batch application needs of different tower grounding scenarios.

[0031] During operation, a deep well is first drilled in the rock area 1. After completing the preliminary exploration, each main branch grounding electrode 3 is pre-assembled onto the central grounding electrode 2 on the ground through the ball head 42 and the ball seat 41. Then, the central grounding electrode 2 is placed into the deep well as a whole. Subsequently, the orientation and extension position of the main branch grounding electrode 3 are finely adjusted by the operator in the well to ensure that it is accurately inserted into the corresponding rock crevice. The adjustment of all the main branch grounding electrodes 3 is completed in sequence to form a stable radial discharge network.

[0032] It should be noted that this embodiment adopts an on-site assembly structure, which eliminates the need for complex processes such as welding, cutting, and bending at high altitudes. Compared with traditional grounding devices that require on-site welding, splicing, and a large number of auxiliary materials for assembly, the installation process is simpler and the construction efficiency is higher. It effectively reduces the risks of working at heights and in confined spaces and is more suitable for the harsh construction conditions in rocky areas.

[0033] After all grounding electrodes are assembled and their positions are confirmed to be qualified, the construction personnel withdraw from the deep well and inject a fluid-like solidified composite conductive layer 5 from the top of the deep well. Since the main branch grounding electrodes 3 are arranged radially, the fluid-like solidified composite conductive layer 5 can flow naturally along the surface of the main branch grounding electrodes 3 under its own weight, completely filling most of the gaps between the central grounding electrode 2, the main branch grounding electrode 3 and the rock. Pressure grouting is added to blind holes, dead corners and other areas in the rock crevices to ensure that all gaps are filled. There is no need to mix in soil or compact in layers. It is completely adapted to the construction restrictions of high-altitude rock areas 1 where large-scale excavation and large-scale soil extraction and backfilling are not possible.

[0034] After the solidified composite conductive layer 5 is fully cured, the central grounding body 2, the main branch grounding body 3 and the rock area 1 are firmly bonded to an integrated conductive whole, eliminating contact gaps and reducing contact resistance. At the same time, the rock area 1 itself is used as a natural current dissipation medium to participate in current discharge, which not only significantly reduces the power frequency grounding resistance, but also significantly suppresses the high-frequency impulse impedance rise under lightning strike conditions. The cured material has stable conductivity, corrosion resistance, hydrophobicity, freeze-thaw resistance and low shrinkage. It is insoluble in rainwater erosion and can maintain stable grounding impedance for a long time in complex climate environments at high altitudes. It truly realizes low-disturbance, small-scale non-explosive construction and makes full use of natural gaps for safe, environmentally friendly and efficient grounding.

[0035] It should be noted that the main branch grounding electrode 3 adopts a radial arrangement, which allows lightning current and fault current to be naturally guided along the branches to the deep rock mass, prioritizing the discharge of current into the ground and preventing the current from spreading upward to the surface, thus reducing the risk of surface step voltage and contact voltage. This radial structure can form a stable form with multi-point anchoring and three-dimensional support around the deep well. Compared with conventional grounding electrodes that are only attached to the inner wall of the deep well, it has stronger overall pull-out resistance and anti-settlement performance, and is not easy to loosen or shift after long-term use. At the same time, the multi-branch outward extension arrangement can greatly expand the bonding range with the rock and solidified conductive layer, effectively forming a stable conductive system with three-dimensional conduction and multi-point discharge, which not only improves the overall conductivity and current carrying capacity, but also significantly enhances the structural stability and operational reliability of the grounding grid in the rock environment.

[0036] like Figure 4 As shown, based on Embodiment 1, Embodiment 2: The surface of the main branch grounding body 3 is provided with several grooves 32, and the secondary branch grounding body 31 is slidably assembled inside the grooves 32. The secondary branch grounding body 31 can slide along the grooves 32 to adapt to natural gaps of different widths and depths in the rock area 1, so as to realize the adaptive adjustment between the secondary branch grounding body 31 and the gaps in the rock and soil.

[0037] like Figure 5 and Figure 6 As shown, an elastic element 33 is fixedly installed inside the chute 32. One end of the elastic element 33 is fixedly connected to the inner wall of the chute 32, and the other end is fixedly connected to the end of the secondary branch grounding body 31. When it is not in contact with the inner wall of the rock and soil gap in the rock area 1, the elastic element 33 is in a naturally extended state. When the secondary branch grounding body 31 comes into contact with the inner wall of the rock and soil gap and is squeezed, the elastic element 33 is compressed, which drives the secondary branch grounding body 31 to retract inward along the chute 32, so that the secondary branch grounding body 31 is always in close contact with the inner wall of the gap.

[0038] It should be added that the elastic element 33 is a compression spring, fitted inside the slide groove 32, which always provides an elastic preload force for the secondary branch grounding body 31 to extend outward. The extended end of the secondary branch grounding body 31 is rounded to avoid sharp edges scratching or getting stuck on the rock wall during insertion into the rock crevice, ensuring smooth sliding without damaging the rock crevice structure. The secondary branch grounding body 31 and the slide groove 32 are fitted together with a clearance fit. During insertion into the rock crevice, if a narrow section is encountered, the inner rock wall squeezes the secondary branch grounding body 31, causing it to overcome the preload force of the elastic element 33 and automatically retract along the slide groove 32. When entering a wider section, the elastic element 33 automatically extends, pushing the secondary branch grounding body 31 outward, so that the end of the secondary branch grounding body 31 always maintains an elastic and tight fit with the inner wall of the rock crevice. This achieves adaptive matching for rock crevices of different widths, depths, and irregular orientations, maximizing the effective contact area between the grounding body and the rock, further reducing contact resistance, and improving the discharge effect.

[0039] Specifically, based on Example 1, after the assembled central grounding body 2 and main branch grounding body 3 are lowered into the deep well of the rock area 1, the main branch grounding body 3 extends into the preset natural rock crevice under the angle adjustment of the connecting module 4.

[0040] During this process, multiple sets of secondary branch grounding electrodes 31 on the main branch grounding electrode 3 enter the gap space synchronously with the main branch. Under the pre-tightening thrust of the elastic element 33, the secondary branch grounding electrode 31 maintains the tendency to extend outward. Its end arc structure can smoothly fit the rock wall and will not cause jamming or scratching of the inner rock wall due to sharp edges. When the rock gap becomes locally narrow and the cross-section becomes smaller, the rock wall will exert a squeezing force on the secondary branch grounding electrode 31, forcing the secondary branch grounding electrode 31 to overcome the elastic force of the elastic element 33 and retract inward along the slide groove 32, automatically avoiding the narrow position, ensuring that the main branch grounding electrode 3 can be smoothly positioned without the problem of being stuck or unable to be lowered.

[0041] When the gap width increases or the area of ​​the crack becomes more spacious, the elastic element 33 will quickly rebound and extend, pushing the secondary branch grounding body 31 outward along the slide groove 32, so that its end is always pressed against the inner wall of the rock crack, achieving full adaptive fit. This extension and retraction action does not require manual intervention or external drive, and can adjust the extension length in real time according to the width and direction of the rock crack, allowing the secondary branch grounding body 31 to fully fill the effective space inside the crack, greatly improving the contact area and fit density between the grounding body and the rock.

[0042] During the subsequent injection and curing of the composite conductive layer 5, the extended and contracted sub-branch grounding electrode 31 can form a multi-point support and current-conducting effect, allowing the conductive slurry to penetrate the small cracks more fully, further reducing contact resistance and impact impedance. Through the dual adaptive coordination of main branch angle adjustment and sub-branch automatic extension and contraction, this embodiment achieves a high degree of compatibility between the grounding electrode and high-altitude rock geology without blasting, crack widening, or damage to the rock mass, significantly improving the current dissipation effect, structural stability, and long-term operational reliability.

[0043] Furthermore, when the rock area 1 undergoes local deformation due to geological subsidence, temperature stress, or construction disturbance, the elastic element 33 can automatically compress or rebound and extend with the contraction and expansion of the rock gaps, driving the secondary branch grounding body 31 to move adaptively in sync. This avoids structural damage caused by stress concentration due to rock deformation. Compared with traditional fixed grounding structures, this embodiment relies on the flexible deformation of the elastic element 33 to achieve dynamic avoidance and adaptive following, which can effectively buffer the squeezing stress caused by geological changes. It will not cause problems such as jamming, bending, breakage, or contact failure, and greatly improves the structural stability, environmental adaptability, and long-term operational reliability of the grounding device in high-altitude rock geology.

[0044] like Figure 7 and Figure 8 As shown, based on Embodiment 2, Embodiment 3: The main branch grounding body 3 has a filling channel 34 inside, which is connected to each chute 32. The surface of the main branch grounding body 3 is equipped with a filling interface 35 that is connected to the filling channel 34. The filling interface 35 is used to introduce a pressure medium into the filling channel 34 to drive the secondary branch grounding body 31 to extend outward along the chute 32.

[0045] like Figure 9 As shown, a groove and a boss are provided between the slide 32 and the secondary branch grounding body 31 to limit the extension stroke of the secondary branch grounding body 31 and prevent the secondary branch grounding body 31 from extending too far out of the slide 32.

[0046] It should be added that the pressure medium is a flowable conductive / non-conductive pressure medium, including hydraulic oil, conductive gel, insulating gel, high-pressure gas, etc., but not limited to the above media. As long as a stable pressure can be formed in the filling channel 34 and the secondary branch grounding body 31 can be driven to extend outward along the slide groove 32, the filling interface 35 has a built-in one-way valve structure or a sealing cap structure. After the pressure medium is introduced into the filling channel 34 through the filling interface 35, the one-way valve can automatically close the channel to prevent the pressure medium from flowing back and leaking, ensuring that a stable pressure is maintained in the filling channel 34, continuously driving the secondary branch grounding body 31 to maintain the extended state, and achieving reliable pressure drive and sealing pressure maintenance.

[0047] Specifically, after the main branch grounding electrode 3 extends into the natural crevice of the rock area 1, a pressure medium with a preset pressure is introduced into the filling channel 34 through the filling interface 35. The one-way valve built into the filling interface 35 automatically closes to prevent the medium from flowing back and depressurizing, so that the pressure in the filling channel 34 is maintained. The pressure medium flows into each chute 32 along the filling channel 34, generating a uniform thrust on the secondary branch grounding electrode 31, driving the secondary branch grounding electrode 31 to extend outward along the chute 32 until its end is tightly attached to the inner wall of the rock crevice.

[0048] The slot and boss structure between the slide groove 32 and the secondary branch grounding body 31 can precisely limit the maximum extension stroke of the secondary branch grounding body 31, preventing it from excessively extending and detaching from the slide groove 32, thus ensuring structural integrity.

[0049] Compared with Embodiment 2, this embodiment uses pressure drive, which has higher extension accuracy. The extension length of the secondary branch grounding electrode 31 can be precisely controlled by adjusting the pressure of the pressure medium, adapting to rock gaps of different widths and achieving more precise fit.

[0050] At the same time, the pressure medium is compressible, so that after the secondary branch grounding body 31 is attached to the inner wall of the rock crevice, it still retains a certain deformation buffer space, which can buffer the compressive stress caused by the small deformation of the rock area 1.

[0051] Compared to the elastic element 33 in Embodiment 2, the pressure-driven structure in this embodiment is more stable. The pressure medium continuously provides uniform thrust, which can avoid fatigue failure and elastic decay of the elastic element 33 after long-term use, and greatly improve the stability of the secondary branch grounding body 31 in contact with the rock gap and the long-term operational reliability of the structure.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A grounding grid for high-altitude rocky terrain, comprising a rocky area (1), wherein a deep well is formed within the rocky area (1), and a central grounding electrode (2) is installed within the deep well, characterized in that: The surface of the central grounding body (2) is equipped with several main branch grounding bodies (3), and the main branch grounding bodies (3) are arranged in a radial distribution with adaptive spatial angle to form a radial discharge network. A connection module (4) is installed between the central grounding body (2) and the main branch grounding bodies (3). The connection module (4) is used to adjust the angle of the main branch grounding body (3) so that the main branch grounding body (3) can adapt to and extend into the natural gap of the rock area (1). The gap between the central grounding body (2), the main branch grounding body (3) and the rock area (1) is filled with a solidified composite conductive layer (5). The solidified composite conductive layer (5) fills the gap between the main branch grounding body (3) and the rock area (1), bonding the grounding body and the rock area (1) into an integrated conductive structure, so that the rock area (1) participates in current discharge as a grounding current dissipation medium.

2. The grounding grid for high-altitude rocky terrain according to claim 1, characterized in that: The connection module (4) includes a ball seat (41) fixedly installed on the surface of the central grounding body (2) and a ball head (42) fixedly installed at the end of the main branch grounding body (3). The ball head (42) is rotatably embedded in the ball seat (41) to realize the spatial angle adjustment of the main branch grounding body (3) relative to the central grounding body (2).

3. A grounding grid for high-altitude rocky terrain according to claim 2, characterized in that: The connection module (4) also includes a set screw (43) for locking the ball head (42). The set screw (43) is threaded to the ball seat (41) and is used to press the ball head (42) after the angle of the main branch grounding body (3) is adjusted to the correct position, so as to achieve angle locking.

4. A grounding grid for high-altitude rocky terrain according to any one of claims 1-3, characterized in that: The surface of the main branch grounding body (3) is provided with several grooves (32), and the secondary branch grounding body (31) is slidably assembled inside the grooves (32). The secondary branch grounding body (31) can slide along the grooves (32) to adapt to natural gaps of different widths and depths in the rock area (1) and realize adaptive adjustment between the secondary branch grounding body (31) and the gaps in the rock and soil.

5. A grounding grid for high-altitude rocky terrain according to claim 4, characterized in that: An elastic element (33) is fixedly installed inside the chute (32). One end of the elastic element (33) is fixedly connected to the inner wall of the chute (32), and the other end is fixedly connected to the end of the secondary branch grounding body (31).

6. A grounding grid for high-altitude rocky terrain according to claim 5, characterized in that: When the elastic element (33) is not in contact with the inner wall of the rock and soil gap in the rock area (1), it is in a naturally elongated state. When the secondary branch grounding body (31) comes into contact with the inner wall of the rock and soil gap and is squeezed, the elastic element (33) is compressed, which drives the secondary branch grounding body (31) to retract inward along the slide groove (32), so that the secondary branch grounding body (31) is always in close contact with the inner wall of the gap.

7. A grounding grid for high-altitude rocky terrain according to claim 4, characterized in that: The main branch grounding body (3) has a filling channel (34) inside. The filling channel (34) is connected to each chute (32). The surface of the main branch grounding body (3) is equipped with a filling interface (35) that is connected to the filling channel (34). The filling interface (35) is used to introduce a pressure medium into the filling channel (34) to drive the secondary branch grounding body (31) to extend outward along the chute (32).

8. A grounding grid for high-altitude rocky terrain according to claim 7, characterized in that: The groove (32) and the sub-branch grounding body (31) are provided with a matching slot and a boss to limit the extension stroke of the sub-branch grounding body (31) and prevent the sub-branch grounding body (31) from extending too far out of the groove (32).

9. A grounding grid for high-altitude rocky terrain according to claim 1, characterized in that: The cured composite conductive layer (5) is made of conductive composite material, which includes at least one of conductive resin, conductive cement, and conductive mortar.

Images