A rock rolling near-body blocking protection device for slope blasting

Abstract

The application relates to the field of slope blasting protection devices, and discloses a rock rolling near-body blocking protection device for slope blasting, which comprises a first anchoring column and a second anchoring column. The first anchoring column is anchored at a downhill position close to a blasting point. First blocking nets are fixedly connected to the two side walls of the first anchoring column, and the mesh holes of the two first blocking nets are staggered. The first blocking nets are used for blocking rock blocks rolling down and splashing at the low position. The second anchoring column is anchored at the downhill position of the first anchoring column. Second blocking nets are fixedly connected to the two side walls of the second anchoring column, and the mesh holes of the two second blocking nets are staggered. The top end height of the second blocking nets is higher than that of the first anchoring column. A high-pressure water curtain is formed through a water curtain device, the high-pressure water curtain impacts the surface of the rolling rock, the kinetic energy of the rolling rock is reduced, the impact force and speed of the rolling rock are slowed down, and the impact force received by the main collecting net is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of slope blasting protection devices, in particular to a near-body blocking protection device for slope blasting. BACKGROUND

[0002] Slope blasting is a common engineering construction method, mainly used in road construction, mining, water conservancy and hydropower fields. The purpose of slope blasting is to change the shape of the slope to meet the requirements of engineering design. However, slope blasting also brings some safety hazards, the most important of which is the splashing and impact of rolling stones. Rolling stones refer to rocks or soil blocks that fall off or fly out from the slope during slope blasting due to the action of explosive force. Rolling stones have a large kinetic energy and speed, and without effective protection measures, rolling stones can cause serious harm and loss to personnel and facilities below the slope.

[0003] Currently, there are several methods commonly used to prevent rolling stones from splashing and impacting:

[0004] Pre-buried grid: Before slope blasting, a layer of grid is pre-buried on the surface of the slope to fix the rocks or soil blocks on the slope to prevent them from falling off or flying out. The advantages of this method are simple and easy to implement, low cost; the disadvantage is that the strength of the grid is limited and cannot completely block the rolling stones, and the grid itself may also be torn or splashed by the explosive force, causing secondary injury.

[0005] Far-body blocking: Set up blocking facilities such as fences, guardrails, ditches, etc. at a certain distance below the slope to intercept and buffer the impact force and speed of rolling stones. The advantage of this method is that it can effectively protect personnel and facilities below the slope; the disadvantage is that it needs to occupy a large space, and the blocking facilities themselves also need to withstand a large impact force, which may be damaged or collapsed.

[0006] Near-body blocking: Set up blocking facilities such as steel wire mesh, steel plate, water bag, etc. at a certain distance above the slope to shield and reduce the splashing and impact of rolling stones. The advantage of this method is that it can effectively reduce the threat of rolling stones to the area below the slope; the disadvantage is that it needs to consume a lot of materials and manpower, and the blocking facilities themselves also need to withstand a large explosive force, which may be deformed or broken. SUMMARY

[0007] In view of the shortcomings of the prior art, the present application provides a near-body blocking protection device for slope blasting, which solves the problem that the near-body blocking facilities themselves withstand a large explosive force and may be deformed or broken.

[0008] In order to achieve the above object, the present application is realized by the following technical scheme: A rock rolling near-body blocking protection device for slope blasting, comprising a first anchoring column and a second anchoring column, the first anchoring column is anchored at the lower slope near the blasting point, the two side walls of the first anchoring column are fixedly connected with a first blocking net, and the mesh holes of the two first blocking nets are staggered, the first blocking net is used for blocking the stone blocks rolling down and splashing from the lower place, the second anchoring column is anchored at the lower slope of the first anchoring column, the two side walls of the second anchoring column are fixedly connected with a second blocking net, and the mesh holes of the two second blocking nets are staggered, the top end height of the second blocking net is higher than that of the first anchoring column, the second blocking net is used for blocking the stone blocks splashing from the higher place, a water curtain device is arranged between the first blocking net and the second blocking net, the water curtain device is used for forming a water curtain for spraying, blocking and slowing down the impact force and speed of the rock rolling, a main collecting part is arranged at the lower part of the first anchoring column, and an auxiliary collecting part is arranged below the second anchoring column, the main collecting part and the auxiliary collecting part are used for collecting the rock rolling.

[0009] Preferably, the water curtain device comprises a water bag made of rubber for storing water for spraying, the lower wall of the water bag is anchored to the slope through a support, and the outer wall of the water bag is provided with a plurality of rubber tubes integrally formed thereon, the outer wall of the rubber tube is respectively penetrated and clamped and fixed to the mesh holes of the two first blocking nets and the mesh holes of the two second blocking nets.

[0010] Preferably, the water inlet of the water bag is communicated with the output end of the high-pressure water pump through a pipeline, and the rubber tube located at the first blocking net is provided with an opening hole penetrating the outer wall and communicating with the outside, a spray head is fixedly connected in the opening hole, the outer wall of the spray head is penetrated and fixedly connected to the outer wall of the water bag, and the inner flow channel of the spray head is communicated with the inner cavity of the water bag.

[0011] Preferably, the first blocking net and the second blocking net are both woven by a plurality of steel wire ropes, and the plurality of steel wire ropes are fixedly connected by elastic materials, and the plurality of steel wire ropes are twisted by a plurality of steel wires.

[0012] Preferably, the main collecting part comprises a main collecting net, the main collecting net is located between the first blocking net and the slope, and the main collecting net is fixedly connected to the slope at the contact position through anchoring nails, the two side edges are respectively fixedly connected to the lower part of the first anchoring column, and the upper edge is fixedly connected to the first blocking net.

[0013] Preferably, the auxiliary collecting part comprises an auxiliary collecting net, the auxiliary collecting net is located between the second blocking net and the slope, and the auxiliary collecting net is fixedly connected to the slope at the contact position through anchoring nails, the two side edges are respectively fixedly connected to the lower part of the second anchoring column, and the upper edge is fixedly connected to the second blocking net.

[0014] Preferably, the surfaces of the first blocking net, the second blocking net, the main collecting net and the auxiliary collecting net are coated with a reflective or fluorescent coating.

[0015] Preferably, the first anchoring column and the second anchoring column are fixedly connected to each other through a buffer column on opposite side walls.

[0016] Preferably, the upper part of the side wall of the first anchoring column towards the blasting point is fixedly connected to one end of an anchoring cable, the other end of the anchoring cable is fixedly connected to an anchor rod through a tension adjuster, and the anchor rod is inserted into and anchored in a slope between the blasting point and the first anchoring column.

[0017] Preferably, the top end of the first anchoring column is fixedly connected to the top end of the second anchoring column through a connecting cable.

[0018] Working principle: water is pumped into the water bag by the high-pressure water pump, causing the water bag to expand. Since the water bag is made of rubber and has a certain elasticity, the water in the water bag is double-pressurized and sprayed out of the nozzle under the combined action of the water pump pressure and the rubber elasticity, forming a high-pressure water curtain. The high-pressure water curtain impacts the surface of the rolling stone, reducing the kinetic energy of the rolling stone and thus slowing down the impact force and speed of the rolling stone. Due to the gravitational effect of the water in the water bag, the overall inertia of the device is increased, and water also has the ability to absorb potential energy. The first blocking net and the second blocking net are used to block flying stones, and they are double-connected through rubber tubes, improving the integrity of the first blocking net and the second blocking net, and the rubber tubes also have a certain buffering effect.

[0019] The present application provides a rolling stone near-body blocking protection device for slope blasting. It has the following advantages:

[0020] The present application pumps water into the water bag by a high-pressure water pump, causing the water bag to expand. Since the water bag is made of rubber and has a certain elasticity, the water in the water bag is double-pressurized and sprayed out of the nozzle under the combined action of the water pump pressure and the rubber elasticity, forming a high-pressure water curtain. The high-pressure water curtain impacts the surface of the rolling stone, reducing the kinetic energy of the rolling stone and thus slowing down the impact force and speed of the rolling stone, and reducing the impact force on the main collecting net. Due to the gravitational effect of the water in the water bag, the overall inertia of the device is increased, and the stability is improved. Water also has the ability to absorb potential energy, further improving the overall impact resistance of the device. The first blocking net and the second blocking net are used to block flying stones, and they are double-connected through rubber tubes, improving the integrity of the first blocking net and the second blocking net, and the rubber tubes also have a certain buffering effect, increasing the impact resistance of the first blocking net and the second blocking net. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The figure is a structural diagram of the device in the present application.

[0022] Figure 2 Figure 3 is a perspective view of the water curtain device in the present application;

[0023] Figure 3 Figure 4 is a partial cross-sectional view of the water bag in the present application;

[0024] Figure 4 Figure 5 is a perspective view of the water curtain device in the present application; Figure 3 Figure 6 is an enlarged view of part A in Figure 5.

[0025] In the figure, 1 is a first anchoring column, 2 is a second anchoring column, 3 is a first blocking net, 4 is a second blocking net, 5 is a water bag, 6 is a rubber cylinder, 7 is an opening, 8 is a spray head, 9 is a main collecting net, 10 is an auxiliary collecting net, 11 is a buffer column, 12 is an anchoring cable, 13 is an anchor rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Please refer to the drawings Figure 1 - the drawings Figure 4 The embodiment of the present application provides a rock rolling near-body blocking protection device for slope blasting, which comprises a first anchoring column 1 and a second anchoring column 2. The first anchoring column 1 is anchored at a downhill position close to a blasting point. First blocking nets 3 are fixedly connected to the two side walls of the first anchoring column 1, and the mesh holes of the two first blocking nets 3 are staggered. The first blocking nets 3 are used to block the stone blocks rolling down and splashing from the low position. The second anchoring column 2 is anchored at the downhill position of the first anchoring column 1. Second blocking nets 4 are fixedly connected to the two side walls of the second anchoring column 2, and the mesh holes of the two second blocking nets 4 are staggered. The top end height of the second blocking nets 4 is higher than that of the first anchoring column 1. The second blocking nets 4 are used to block the stone blocks splashing from the high position. A water curtain device is arranged between the first blocking nets 3 and the second blocking nets 4. The water curtain device is used to form a water curtain for blocking and slowing down the impact force and speed of the rolling stone. A main collecting part is arranged at the lower part of the first anchoring column 1, and an auxiliary collecting part is arranged below the second anchoring column 2. The main collecting part and the auxiliary collecting part are used to collect the rolling stone.

[0028] Before blasting, according to the blasting equivalent, the first anchoring column 1, the second anchoring column 2 and the support are anchored to the slope in turn, respectively. After blasting, the broken stones are shot in three layers, a part of which rolls along the slope, and the impact force of this part of the broken stones is the strongest, and the impact force is continuously improved with the continuous rolling. A part of which splashes at a low height, and another part of which splashes at a high height. At this time, the heavy rolling stones are first blocked by the high-pressure water curtain during the rolling process, and the potential energy is continuously consumed by the impact flow, and finally stops or is collected by the main collecting part with a small impact force. The low-height splashing stones hit the first blocking net 3 and are blocked to fall to the slope. At this time, the potential energy of the broken stones is greatly absorbed by the first blocking net 3, and then the broken stones are collected by the main collecting part with a small impact force. The high-height splashing stones are blocked by the second blocking net 4 and then fall to the slope. Similarly, the potential energy is greatly absorbed by the second blocking net 4, and then the broken stones are collected by the main collecting part with a small impact force.

[0029] The first blocking net 3 and the second blocking net 4 are both arranged in a staggered manner, which reduces the pore size, avoids small-volume broken stones from passing through, and improves the blocking effect. Meanwhile, the double-layer arrangement increases the impact resistance.

[0030] The high-pressure water curtain impacts the surface of the rolling stones, so that the rolling stones are continuously impacted in the opposite direction by the water flow, and the potential energy is continuously consumed, thereby slowing down the impact force and speed of the rolling stones, reducing the impact force on the main collecting part, and improving the impact resistance of the device.

[0031] The water curtain device includes a water bag 5 made of rubber for storing water for spraying. The lower wall of the water bag 5 is anchored to the slope by a support, and the outer wall of the water bag 5 is provided with a plurality of rubber tubes 6 integrally formed thereon. The outer wall of the rubber tube 6 penetrates and is fixedly connected to the mesh holes of the two first blocking nets 3 and the two second blocking nets 4, respectively.

[0032] Due to the gravity of the water in the water bag, the inertia of the entire device is increased, thereby further improving the impact resistance of the device. Meanwhile, the water bag filled with water also has the function of absorbing potential energy, so that the first blocking net 3 can better block the splashing stones with medium potential energy. The rubber tube 6 realizes the double-layer connection of the first blocking net 3 and the second blocking net 4, improves the integrity of the two, and the rubber tube 6 also has a certain buffering effect, thereby further improving the impact resistance of the first blocking net 3 and the second blocking net 4.

[0033] The water inlet of the water bag 5 is connected to the output end of the high-pressure water pump through a pipeline, and the rubber tube 6 located at the first blocking net 3 is provided with an opening 7 penetrating the outer wall and communicating with the outside. A spray head 8 is fixedly connected in the opening 7, the outer wall of the spray head 8 penetrates and is fixedly connected to the outer wall of the water bag 5, and the inner flow channel of the spray head 8 communicates with the inner cavity of the water bag 5.

[0034] The water is pumped into the water bag 5 by the high-pressure water pump, so that the water bag 5 is inflated. Since the water bag 5 is made of rubber and has a certain elasticity, under the combined action of the pressure of the high-pressure water pump and the elasticity of the rubber, the water in the water bag 5 is double-pressurized and sprayed from the nozzle to form a high-pressure water curtain.

[0035] The first barrier net 3 and the second barrier net 4 are both woven by multiple layers of steel wire ropes, and the multiple layers of steel wire ropes are fixedly connected by elastic materials. The multiple layers of steel wire ropes are twisted by multiple steel wires.

[0036] The first barrier net 3 and the second barrier net 4 are woven by multiple layers of steel wire ropes, and each layer of steel wire rope is connected by deformable elastic materials, which can effectively absorb and disperse the impact force of the rolling stones, prevent the rolling stones from penetrating or tearing the net body, and improve the blocking ability and durability of the net body.

[0037] The main collecting part includes a main collecting net 9, which is located between the first barrier net 3 and the slope and is fixedly connected with the slope at the contact position by anchor nails. The two side edges of the main collecting net 9 are fixedly connected with the lower part of the first anchor column 1, and the upper edge is fixedly connected with the first barrier net 3.

[0038] The main collecting net 9 is used to collect the stones with reduced potential energy, so as to avoid the stones from continuing to roll down the slope. At the same time, the rolling stones are collected and concentrated, which is convenient for subsequent processing of the rolling stones.

[0039] The auxiliary collecting part includes an auxiliary collecting net 10, which is located between the second barrier net 4 and the slope and is fixedly connected with the slope at the contact position by anchor nails. The two side edges of the auxiliary collecting net 10 are fixedly connected with the lower part of the second anchor column 2, and the upper edge is fixedly connected with the second barrier net 4.

[0040] The auxiliary collecting net 10 plays a role of assisting the main collecting net 9. On the one hand, it provides support for the main collecting net 9 which is deformed by impact. On the other hand, it avoids the problem that the main collecting net 9 is damaged to cause the rolling stones.

[0041] The surfaces of the first barrier net 3, the second barrier net 4, the main collecting net 9 and the auxiliary collecting net 10 are coated with reflective and fluorescent paint.

[0042] Through spraying of the reflective and fluorescent paint, the recognition degree of the net body under night or low light conditions can be effectively increased, and the safety is improved.

[0043] The opposite side walls of the first anchor column 1 and the second anchor column 2 are fixedly connected with each other by a buffer column 11.

[0044] The buffer column 11 is a cylindrical structure made of elastic materials such as rubber or polyurethane. It not only improves the overall strength of the device to improve the impact resistance of the device, but also reduces the oscillation amplitude of the device after impact, thereby improving the stability of the device.

[0045] The upper part of the side wall of the first anchoring column 1 towards the blasting point direction is fixedly connected to one end of the anchoring cable 12, the other end of the anchoring cable 12 is fixedly connected with the anchor rod 13 through the tension adjuster, and the anchor rod 13 is inserted and anchored in the slope between the blasting point and the first anchoring column 1.

[0046] The anchoring cable 12 is used to provide the first anchoring column 1 with a pulling force opposite to the impact force, further improving the stability of the device, and the setting of the tension adjuster facilitates the tension adjustment of the anchoring cable 12 after the anchoring of the anchor rod 13, reducing the installation difficulty.

[0047] The top end of the first anchoring column 1 and the top end of the second anchoring column 2 are fixedly connected through the connecting cable 14.

[0048] Through the setting of the connecting cable 14, part of the force above the second anchoring column 2 is transferred to the first anchoring column 1, thereby further improving the impact resistance of the device.

[0049] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rockfall protection device for slope blasting, comprising a first anchor column (1) and a second anchor column (2), characterized in that, The first anchor post (1) is anchored at the downhill section near the blasting point. The first anchor post (1) is fixedly connected to the two side walls of the first anchor post (1) with a first blocking net (3) and the mesh of the two first blocking nets (3) is staggered. The first blocking net (3) is used to block rolling stones and stones splashed from low places. The second anchor post (2) is anchored at the downhill section of the first anchor post (1). The second anchor post (2) is fixedly connected to the two side walls of the second anchor post (2) with a second blocking net (4) and the mesh of the two second blocking nets (4) is staggered. The top height of the second blocking net (4) is higher than the top height of the first anchor post (1). The second blocking net (4) is used to block stones splashed from high places. A water curtain device is set between the first blocking net (3) and the second blocking net (4). The water curtain device is used to form a spray water curtain to block and slow down the impact force and speed of rolling stones. A main collection part is set at the bottom of the first anchor post (1), and an auxiliary collection part is set at the bottom of the second anchor post (2). Both the main collection part and the auxiliary collection part are used to collect rolling stones. The water curtain device includes a water bag (5), which is made of rubber and is used to store spray water. The lower wall of the water bag (5) is anchored to the slope by a bracket. The outer wall of the water bag (5) is provided with multiple rubber cylinders (6) integrally formed therewith. The outer wall of the rubber cylinders (6) passes through and is fixed to the mesh of two first blocking nets (3) and two second blocking nets (4). The water inlet of the water bag (5) is connected to the output end of the high-pressure water pump through a pipe, and the rubber tube (6) located at the first blocking net (3) has an opening (7) that communicates with the outside. A nozzle (8) is fixedly connected in the opening (7). The outer wall of the nozzle (8) is connected to the outer wall of the water bag (5), and the flow channel inside the nozzle (8) is connected to the inner cavity of the water bag (5).

2. The slope blasting rock-blocking and protection device according to claim 1, characterized in that, The first barrier net (3) and the second barrier net (4) are both woven from multiple layers of steel wire rope, and the multiple layers of steel wire rope are fixedly connected by elastic material. The multiple layers of steel wire rope are made of multiple steel wires twisted together.

3. The slope blasting rock-blocking protection device according to claim 1, characterized in that, The main collection part includes a main collection net (9), which is located between the first barrier net (3) and the slope. The main collection net (9) is fixedly connected to the slope at the contact point with the slope by anchor nails. Its two sides are fixedly connected to the lower part of the first anchor column (1) and its upper edge is fixedly connected to the first barrier net (3).

4. A rock-rolling near-body blocking and protection device for slope blasting according to claim 3, characterized in that, The auxiliary collection unit includes an auxiliary collection net (10), which is located between the second barrier net (4) and the slope. The auxiliary collection net (10) is fixedly connected to the slope at the contact point with the slope by anchor nails. Its two sides are fixedly connected to the lower part of the second anchor column (2) respectively, and its upper edge is fixedly connected to the second barrier net (4).

5. A slope blasting rock-blocking and protection device according to claim 4, characterized in that, The surfaces of the first barrier net (3), the second barrier net (4), the main collection net (9) and the auxiliary collection net (10) are all coated with reflective and fluorescent paint.

6. A rock-rolling near-body blocking and protection device for slope blasting according to claim 1, characterized in that, The first anchor post (1) and the second anchor post (2) are fixedly connected to each other on opposite sidewalls by a buffer post (11).

7. A rock-rolling near-body blocking and protection device for slope blasting according to claim 6, characterized in that, The upper part of the side wall of the first anchor column (1) facing the blast point is fixedly connected to one end of the anchor cable (12). The other end of the anchor cable (12) is fixedly connected to the anchor rod (13) through a tension adjuster. The anchor rod (13) is inserted into and anchored in the slope between the blast point and the first anchor column (1).

8. A rock-rolling near-body blocking and protection device for slope blasting according to claim 7, characterized in that, The top of the first anchor post (1) is fixedly connected to the top of the second anchor post (2) by a connecting steel cable (14).

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