Dynamic safety detection structure and emergency control method for high and steep mine slope

Abstract

The invention provides a dynamic safety detection structure of a high and steep mine slope and an emergency control method, the dynamic safety detection structure comprises a threaded anchor rod anchored in a slope body, the tail end of the threaded anchor rod is fixedly connected with a magnetic base, and the magnetic base is arranged on the surface of iron ore waste residue on the surface of the slope body; the magnetic base comprises a permanent magnet disc located on the upper portion, the lower end of the permanent magnet disc is bonded with an annular sliding rail, and a supporting rod is hinged to the annular sliding rail through a hinge ball. A vegetation fiber net is laid on the surface layer of the iron ore waste residues and located on the periphery of the magnetic base, and the vegetation fiber net is arranged at the tops of the supporting rods. Transverse baffles are arranged in the iron ore waste residues and extend into the slope by a certain depth, and the transverse baffles are arranged in the elevation direction of the slope according to a certain interval. And the permanent magnetic disc of the magnetic base is matched with the magnetic positioning system and transmits position information to the computer. When the side slope slides, the magnetic base and the iron ore waste slag quickly respond to form a wall, and the wall becomes a protective barrier.

Description

Technical Field

[0001] The invention relates to the technical field of slope prevention and control, and in particular to a dynamic safety detection structure and an emergency prevention and control method for a high and steep mine slope. Background Art

[0002] The high incidence of slope instability in mines is a complex and serious problem. On the one hand, environmental factors are complex, such as self-weight stress, temperature difference stress, vibration stress, residual stress and water stress, which have a significant impact on the stability of the slope. On the other hand, the interference of mining activities, such as the seismic waves generated by blasting operations, will cause the joints of the rock mass to open and even break the rock. During the mining process, the frequent operation of mechanical equipment such as excavators and loaders on the slope will cause repeated rolling of the slope, reducing its stability. In the face of the high incidence of mine slopes, comprehensive measures must be taken to reduce the risk of slope instability. At present, there are many methods to detect the occurrence of landslides, but when the landslide does not occur within the predicted range, there are no emergency prevention and control measures. Summary of the invention

[0003] The present invention provides a dynamic safety detection structure and an emergency prevention method for high and steep mine slopes. The detection structure reinforces dangerous slopes by means of anchor rods and anchor cables, and dynamically detects the slope status by means of magnetic positioning in a magnetic base, and issues early warnings in a timely manner. When the slope slips, the magnetic base and the iron ore waste slag quickly respond to form a wall, forming a protective barrier.

[0004] In order to realize the above technical features, the object of the present invention is achieved as follows: a dynamic safety detection structure for a high and steep mine slope, comprising a threaded anchor bolt anchored inside the slope body, the end of the threaded anchor bolt being fixedly connected to a magnetic base, and the magnetic base being arranged on the surface of the iron ore waste slag on the surface of the slope body; The magnetic base comprises a permanent magnetic disk at the upper part, the lower end of the permanent magnetic disk is bonded to a circular slide rail, and a support rod is hinged on the circular slide rail through a hinge ball; The surface layer of the iron ore waste slag and the periphery of the magnetic base are paved with a vegetation fiber net, and the vegetation fiber net is arranged on the top of the support rod; A transverse baffle is arranged inside the iron ore waste and extends into the slope to a certain depth, and the transverse baffle is arranged along the slope elevation direction at a certain interval; The permanent magnetic disk of the magnetic base cooperates with the magnetic positioning system and transmits the position information to the computer.

[0005] The tail of the threaded anchor rod is connected to the magnetic base through a nut. The rod body of the threaded anchor rod is made of alloy material. The size of the threaded anchor rod is selected according to the geological conditions of the slope.

[0006] The bottom end of the magnetic base is connected to an anchor cable arranged inside the slope.

[0007] The permanent magnetic disk adopts a high-strength magnet with strong magnetic force, such as NdFeB, alloy or ferrite magnet, the strongest magnetic field area is 12000-15000 Gauss, and has a strong suction force on iron ore waste slag.

[0008] The axial direction of the anchor cable is 0°~5° with the horizontal direction and intersects with the anchoring end of the threaded anchor rod. The threaded anchor rod is 0°~5° with the vertical direction of the slope.

[0009] The magnetic positioning system locates the permanent magnetic disk according to the strength of the magnetic field, transmits the position information of the permanent magnetic disk to the computer and stores it, and then sets the warning threshold according to the maximum allowable slope slippage.

[0010] The support rods are evenly arranged in a circle along the center of the magnetic base.

[0011] The method for emergency prevention and control using the dynamic safety detection structure of a high and steep mine slope comprises the following steps: Step 1: Material preparation: Prepare the required threaded anchor rods, magnetic bases, permanent magnetic disks, circular slide rails, articulated balls, struts, vegetation fiber nets, iron ore waste slag, transverse baffles, anchor cables and magnetic positioning systems; Step 2: Advance detection: Find out the geological conditions of groundwater development and slope types, reasonably set the spacing between threaded anchors, and design the size of threaded anchors and the thickness of iron ore waste slag laid on the slope; Step 3: Pre-processing before reinforcement: Clear weeds, fallen rocks and gravel on the slopes, dredge drainage facilities and ensure smooth drainage; Step 4: Slope paving: At certain intervals on the slope, a transverse baffle is driven into the slope vertically, and the transverse baffle and the slope form a U-shaped groove, in which the iron ore waste slag is laid; Step 5: Vegetation restoration: The surface of iron ore waste is covered with a vegetation fiber net, which makes the iron ore waste have good water permeability, and the vegetation roots can enter the slope and consolidate the soil; Step 6: Prepare grouting liquid: Prepare concrete slurry according to a certain water-cement ratio; Step 7: Reinforcement: According to the design requirements, drilling auxiliary equipment is used to drill the threaded anchor rod that integrates drilling and grouting to the depth required by the design. The support rod is stretched to fix the position of the magnetic base, and the iron ore waste is radially adsorbed around the magnetic base; the threaded anchor rod passes through the vegetation fiber net, passes through the iron ore waste, and enters the slope soil. A small amount of slurry is sprayed to protect the wall. After the position is fixed, a large amount of grouting is performed to ensure that the threaded anchor rod forms a firm connection with the rock and soil. Step 8: Magnetic positioning: The magnetic positioning system locates the permanent magnetic disk on the magnetic base according to the strength of the magnetic field, transmits the position information to the computer and stores it, and sets the red warning threshold according to the maximum allowable slope slippage. When an alarm occurs, reverse measures should be taken quickly to reduce the harm caused by the accident. Step 9: Magnetic fields converge into a wall: When the slope slips, the iron ore waste on the slip surface gathers toward the magnetic base to form a magnetic wall, thereby preventing the slope from further slipping and collapsing. The threaded anchor rods and anchor cables are used to tension the magnetic wall and the slope to achieve self-locking.

[0012] Beneficial effects of the present invention: 1. By adopting the method of the present invention, comprehensive measures must be taken to reduce the risk of slope instability due to the high incidence of mine slopes, and a plan integrating slope reinforcement, slope beautification, safety prediction, and emergency prevention and control measures is proposed.

[0013] 2. The present invention cleverly incorporates the details of engineering technology through the design of the magnetic base. It is not just a simple anchor lock, but a stable and reliable support is applied to the tail of the threaded anchor. When the magnetic base is firmly locked to the tail of the threaded anchor, it means that even under extreme geological conditions, the anchor will maintain its position and will not move or tilt easily. More importantly, the combination of the base and the support rod system further enhances the protective performance. The opening function of the support rod can effectively prevent the sliding and accumulation of solid waste such as iron ore slag on the slope, thereby ensuring the stability of the slope and reducing potential safety risks. At the same time, it also ensures the cleanliness and sustainable development of the environment during the construction process.

[0014] 3. When the rock mass slides unstably due to some external force, cracks appear on the slope or even collapses, a special protective structure - a magnetic wall combining a magnetic base and iron ore waste slag plays a key role. This unique magnetic property can quickly transform into a solid barrier under the influence of external forces, effectively preventing further landslides or collapses.

[0015] 4. The present invention uses the vegetation fiber net as a new type of ecological engineering material that organically combines slopes and natural greening. This special plant fiber net can not only provide a good planting point for plant seeds, which is crucial for the early growth of plants, but also beautify the surrounding environment. Through reasonable design and configuration, the stability of the slope protection can be guaranteed, and the soil consolidation capacity of the slope protection can be enhanced, thereby achieving the purpose of long-term ecological restoration.

[0016] 5. The magnetic positioning system described in the present invention is an advanced technology that uses the principle of magnetic field for precise positioning. The system can monitor the dynamic changes of mine slopes in real time by sensing the position of the magnetic base. During mining operations, this technology can effectively detect whether there are potential safety risks on the slopes. Once an abnormal situation is detected, the system can quickly issue an alarm, and relevant staff can take timely response actions according to pre-set procedures and measures, such as reinforcing the slopes, adjusting the mining sequence or suspending operations, to ensure operational safety and prevent accidents. This system not only improves the accuracy of mine slope management, but also greatly reduces production losses caused by uncertain factors, providing a strong guarantee for the sustainable development of mines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the slope reinforcement involved in the present invention.

[0019] Figure 2 This is a structural diagram of the threaded anchor rod and the magnetic base involved in the present invention.

[0020] Figure 3 This is a top view of the magnetic base involved in the present invention.

[0021] Figure 4 This is a cross-sectional view of the magnetic base involved in the present invention.

[0022] Figure 5 This is a schematic diagram of the circular slide rail involved in the present invention.

[0023] Figure 6 The figure is a schematic diagram of the threaded anchor rod anchoring involved in the present invention.

[0024] Figure 7 This is a schematic diagram of the threaded anchor rod and the magnetic base responding to form a magnetic wall according to the present invention.

[0025] In the figure: threaded anchor rod 1, magnetic base 2, permanent magnetic disk 3, circular slide rail 4, articulated ball 5, support rod 6, vegetation fiber net 7, iron ore waste slag 8, transverse baffle 9, anchor cable 10, magnetic positioning system 11. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0027] Embodiment 1: like Figure 1-7As shown, a dynamic safety detection structure for a high and steep mine slope comprises a threaded anchor rod 1 anchored inside the slope, the end of the threaded anchor rod 1 is fixedly connected to a magnetic base 2, and the magnetic base 2 is arranged on the surface of an iron ore waste 8 on the surface of the slope; the magnetic base 2 comprises a permanent magnetic disk 3 located at the upper part, the lower end of the permanent magnetic disk 3 is bonded to a circular slide rail 4, and a support rod 6 is hinged on the circular slide rail 4 through a hinge ball 5; a vegetation fiber mesh 7 is laid on the surface of the iron ore waste 8 and located on the periphery of the magnetic base 2, and the vegetation fiber mesh 7 is arranged on the top of the support rod 6; a transverse baffle 9 is arranged inside the iron ore waste 8 and extends into the slope to a certain depth, and the transverse baffle 9 is arranged along the slope elevation direction at a certain interval; the permanent magnetic disk 3 of the magnetic base 2 cooperates with a magnetic positioning system 11 and transmits the position information to a computer. This detection structure reinforces dangerous slopes through anchor rods and cables, and dynamically detects the slope status through magnetic positioning in the magnetic base, giving timely warnings; when the slope slips, the magnetic base and iron ore waste slag quickly respond to form a wall, becoming a protective barrier.

[0028] Furthermore, the tail of the threaded anchor rod 1 is connected to the magnetic base 2 through a nut, the rod body of the threaded anchor rod 1 is made of alloy material, and the size of the threaded anchor rod 1 is selected according to the geological conditions of the slope. Among them, the threaded anchor rod 1 plays a role in fixing the iron ore waste slag to prevent it from sliding along the slope wall, and on the other hand, it enhances the anti-cutting force of the slope sliding body, reduces the sliding deformation of the slope, and enhances the bonding force.

[0029] Furthermore, the bottom end of the magnetic base 2 is connected to an anchor cable 10 disposed inside the slope. The magnetic base 2, as an anchor lock at the tail of the threaded anchor rod, fixes the position of the threaded anchor rod. At the same time, when the magnetic base is fixed to the tail of the threaded anchor rod, the support rod is opened to prevent the iron ore slag on the slope from sliding off. The anchor cable 10 further enhances the connection strength between the magnetic wall and the slope to prevent further collapse of the sliding body. If the slope slips, the threaded anchor rod may loosen. The magnetic base and the iron ore slag form a magnetic wall, and the anchor rod is tensioned to make the magnetic wall as balanced as possible.

[0030] Furthermore, the transverse baffle 9 and the slope surface form a U-shaped trough to store iron ore waste.

[0031] Furthermore, the permanent magnetic disk 3 uses a high-strength magnet with strong magnetic force, such as NdFeB, alloy or ferrite magnet, with the strongest magnetic field area of ​​12000-15000 Gauss, and has a strong suction force on iron ore waste.

[0032] Furthermore, the axial direction of the anchor cable 10 is 0°~5° with the horizontal direction, intersecting with the anchoring end of the threaded anchor rod 1, and the threaded anchor rod 1 is 0°~5° with the vertical direction of the slope.

[0033] Furthermore, the vegetation fiber net 7 provides implantation points for vegetation seeds, beautifies the slope environment, and simultaneously achieves vegetation slope protection and slope consolidation when planting vegetation with strong root systems.

[0034] Furthermore, the magnetic positioning system 11 locates the permanent magnetic disk 3 according to the strength of the magnetic field, transmits the position information of the permanent magnetic disk 3 to the computer and stores it, and then sets the warning threshold according to the maximum allowable slope slippage. According to the magnetic field positioning, the position of the magnetic base is detected in real time, the safety status of the mine slope is dynamically detected, and preventive measures are taken in advance.

[0035] Furthermore, the support rods 6 are evenly arranged in a circle along the center of the magnetic base 2. The support rods 6 can be opened when slipping occurs, so that the iron ore waste slag on the slope can be prevented from sliding down.

[0036] Embodiment 2: The method for emergency prevention and control using the dynamic safety detection structure of a high and steep mine slope comprises the following steps: Step 1: Material preparation: Prepare the required threaded anchor rod 1, magnetic base 2, permanent magnetic disk 3, circular slide rail 4, hinged ball 5, support rod 6, vegetation fiber net 7, iron ore waste slag, transverse baffle 9, anchor cable 10, and magnetic positioning system; Step 2: Advance detection: Find out the geological conditions of groundwater development and slope types, reasonably set the spacing between threaded anchor rods 1, and design the size of threaded anchor rods 1 and the thickness of iron ore waste slag 8 laid on the slope; Step 3: Pre-processing before reinforcement: Clear weeds, fallen rocks and gravel on the slopes, dredge drainage facilities and ensure smooth drainage; Step 4: Slope paving: At certain intervals on the slope, a transverse baffle 9 is driven vertically into the slope, and the transverse baffle 9 and the slope form a U-shaped groove, in which iron ore waste slag is laid; Step 5: Vegetation restoration: The surface of the iron ore waste 8 is covered with a vegetation fiber net 7, the iron ore waste has good water permeability, and the vegetation roots can enter the slope and consolidate the soil; Step 6: Prepare grouting liquid: Prepare concrete slurry according to a certain water-cement ratio; Step 7: Reinforcement: According to the design requirements, the drilling auxiliary equipment is used to drill the threaded anchor rod 1 which integrates drilling and grouting to the depth required by the design, the support rod 6 is stretched to fix the position of the magnetic base 3, and the iron ore waste is radially adsorbed around the magnetic base 2; the threaded anchor rod 1 passes through the vegetation fiber net 7, passes through the iron ore waste 8, enters the slope soil, and a small amount of slurry is sprayed to protect the wall. After the position is fixed, a large amount of grouting is performed to ensure that the threaded anchor rod 1 forms a firm connection with the rock and soil; Step 8: Magnetic positioning: The magnetic positioning system locates the permanent magnetic disk 3 on the magnetic base 2 according to the strength of the magnetic field, transmits the position information to the computer and stores it, and sets the red warning threshold according to the maximum allowable slope slippage. When an alarm occurs, reverse measures should be taken quickly to reduce the harm caused by the accident; Step 9: Magnetic fields converge into a wall: When the slope slips, the iron ore waste on the slip surface gathers toward the magnetic base 2 to form a magnetic wall, thereby preventing the slope from further slipping and collapsing, and the threaded anchor rod 1 and the anchor cable 10 are tensioned to achieve self-locking of the magnetic wall and the slope.

[0037] Embodiment 3: The initial proposed formulation of the concrete slurry prepared in the Step 6 is C:S=1:(0.6-1.0) volume ratio, the water-cement ratio of the cement slurry is 0.8:1-1:1, the aggregate gradation is good Cu>5 and Cc=1-3.

Claims

1. A dynamic safety detection structure for high and steep mine slopes, characterized in that: It comprises a threaded anchor rod (1) anchored inside a slope, the end of the threaded anchor rod (1) being fixedly connected to a magnetic base (2), and the magnetic base (2) being arranged on the surface of an iron ore waste slag (8) on the surface of the slope; The magnetic base (2) comprises a permanent magnetic disk (3) located at the upper part, the lower end of the permanent magnetic disk (3) is bonded to a circular slide rail (4), and a support rod (6) is hingedly connected to the circular slide rail (4) via a hinge ball (5); A vegetation fiber net (7) is laid on the surface of the iron ore waste slag (8) and on the periphery of the magnetic base (2), and the vegetation fiber net (7) is arranged on the top of the support rod (6); A transverse baffle (9) is arranged inside the iron ore waste slag (8) and extends into the slope to a certain depth, and the transverse baffle (9) is arranged at a certain interval along the slope elevation direction; The permanent magnetic disk (3) of the magnetic base (2) cooperates with the magnetic positioning system and transmits the position information to the computer.

2. A dynamic safety detection structure for high and steep mine slopes according to claim 1, characterized in that: The tail of the threaded anchor rod (1) is connected to the magnetic base (2) via a nut. The rod body of the threaded anchor rod (1) is made of alloy material. The size of the threaded anchor rod (1) is selected according to the geological conditions of the slope.

3. The dynamic safety detection structure for high and steep mine slopes according to claim 1 is characterized in that: The bottom end of the magnetic base (2) is connected to an anchor cable (10) arranged inside the slope.

4. The dynamic safety detection structure for high and steep mine slopes according to claim 1 is characterized in that: The permanent magnetic disk (3) uses a high-strength magnet with strong magnetic force, such as neodymium iron boron, alloy or ferrite magnet, with the strongest magnetic field area of ​​12000-15000 gauss, and has a strong suction force on iron ore waste slag.

5. The dynamic safety detection structure for high and steep mine slopes according to claim 3 is characterized in that: The axial direction of the anchor cable (10) is 0° to 5° with the horizontal direction, intersecting with the anchoring end of the threaded anchor rod (1), and the threaded anchor rod (1) is 0° to 5° with the vertical direction of the slope.

6. The dynamic safety detection structure for high and steep mine slopes according to claim 3 is characterized in that: The magnetic positioning system positions the permanent magnetic disk (3) according to the strength of the magnetic field, transmits the position information of the permanent magnetic disk (3) to a computer and stores it, and then sets a warning threshold according to the maximum allowable slope slippage.

7. The dynamic safety detection structure for high and steep mine slopes according to claim 1 is characterized in that: The support rods (6) are evenly arranged in a circle along the center of the magnetic base (2).

8. An emergency prevention method using a dynamic safety detection structure for steep mine slopes as described in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Material preparation: Prepare the required threaded anchor rod (1), magnetic base (2), permanent magnetic disk (3), circular slide rail (4), hinged ball (5), support rod (6), vegetation fiber net (7), iron ore waste slag, transverse baffle (9), anchor cable (10) and magnetic positioning system; Step 2: Advance detection: Find out the geological conditions of groundwater development and slope type, reasonably set the spacing between threaded anchor rods (1), and design the size of threaded anchor rods (1) and the thickness of iron ore waste slag (8) laid on the slope; Step 3: Pre-processing before reinforcement: Clear weeds, fallen rocks and gravel on the slopes, dredge drainage facilities and ensure smooth drainage; Step 4: Slope paving: At certain intervals on the slope surface, a transverse baffle (9) is driven vertically into the slope surface, the transverse baffle (9) and the slope surface form a U-shaped groove, and iron ore waste slag is laid in the groove; Step 5: Vegetation restoration: The surface of the iron ore waste (8) is covered with a vegetation fiber net (7). The iron ore waste has good water permeability, and the vegetation roots can enter the slope to consolidate the soil; Step 6: Prepare grouting liquid: Prepare concrete slurry according to a certain water-cement ratio; Step 7: Reinforcement: According to the design requirements, a drilling auxiliary device is used to drill the threaded anchor rod (1) that integrates drilling and grouting to the depth required by the design, the support rod (6) is stretched to fix the position of the magnetic base (3), and the iron ore waste is radially adsorbed around the magnetic base (2); the threaded anchor rod (1) passes through the vegetation fiber net (7), passes through the iron ore waste (8), enters the slope soil, and a small amount of slurry is sprayed to protect the wall. After the position is fixed, a large amount of grouting is performed to ensure that the threaded anchor rod (1) is firmly connected to the rock and soil; Step 8: Magnetic positioning: The magnetic positioning system locates the permanent magnetic disk (3) on the magnetic base (2) according to the strength of the magnetic field, transmits the position information to the computer and stores it, and sets a red warning threshold according to the maximum allowable slope slippage. When an alarm occurs, reverse measures should be taken quickly to reduce the harm caused by the accident; Step 9: Magnetic fields converge into a wall: When the slope slips, the iron ore waste on the slip surface gathers toward the magnetic base (2) to form a magnetic wall, thereby preventing the slope from further slipping and collapsing, and the threaded anchor rods (1) and anchor cables (10) are tensioned to achieve self-locking of the magnetic wall and the slope.

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