A kind of quick supporting device suitable for local unstable slope of soft rock in mine

Abstract

The utility model relates to the technical field of slope support waterproof construction, and specifically discloses a kind of quick support device suitable for local unstable slope of mine soft rock, including the slope foot of being arranged at the bottom of slope, reinforcing area being arranged in the inside of slope;The slope foot is arranged from bottom to top several support plate one and support plate two, and the covering plate is connected with the upper portion of support plate two, wherein:the support plate one includes board body one, and the side of support plate two of board body one is equipped with at least one convex strip for clamping into support plate two.The utility model is combined with the integrated design of the support plate combination structure of prefabrication, assembly by adopting deep anchoring system, solve the prominent problem that traditional soft rock slope management method responds tardily, construction cycle is long, cannot carry out fast and effective intervention in crack development critical period.

Description

Technical Field

[0001] This utility model relates to the field of slope support and waterproofing construction technology, specifically a rapid support device suitable for locally unstable soft rock slopes in mines. Background Technology

[0002] Excavation operations in open-pit mines, highway and railway subgrades, and water conservancy projects often create artificial slopes. Among these, soft rock slopes composed of mudstone, shale, and carbonaceous slate are particularly problematic due to their low rock strength, poor cementation, and tendency to soften and turn into mud when exposed to water. Under conditions of rainfall, blasting vibrations, or engineering disturbances, these slopes are highly susceptible to developing longitudinal cracks at the top or surface, which gradually evolve into arc-shaped potential sliding surfaces. If not addressed promptly, local instability can rapidly escalate into large-scale landslides, severely threatening personnel and equipment safety and impacting project progress.

[0003] Currently, traditional methods for treating such locally unstable slopes mainly include "counter-pressure toe" and "anchor (cable) frame beams." While the "counter-pressure toe" method is simple in principle, it requires a large amount of earth and rock filling, resulting in a long construction period, large site requirements, and difficulty in rapid implementation during the critical emergency response window. Often, by the time the treatment plan is designed and materials are prepared, slope deformation has already progressed further, missing the optimal treatment opportunity. While the "anchor (cable) frame beam" support system offers strong support capabilities, its construction process is complex, requiring multiple steps such as drilling, grouting, rebar tying, formwork, and concrete pouring. It also suffers from low construction efficiency and a long cycle, failing to meet the need for rapid response to sudden localized deformations.

[0004] In recent years, prefabricated support structures have been widely used due to their advantages such as convenient construction and standardized production. For example, there is a slope support scheme in the prior art that combines prefabricated support plates with anchor bolts. However, this type of scheme usually focuses more on solving the structural strength and factory production problems of permanent support. Its component design is complex, with many connection nodes and high requirements for installation accuracy, which often results in low efficiency when quickly assembled on site. More importantly, most existing prefabricated schemes do not adequately consider the special characteristics of soft rock slopes, especially the hazards of water. The instability of soft rock slopes is often closely related to the effects of water. Rainfall or groundwater infiltration can drastically reduce the strength of the rock mass and increase the sliding force. The drainage design in the prior art is mostly an auxiliary or post-contribution consideration, failing to be effectively and quickly integrated with the support structure itself. This leads to a disconnect between drainage and support in terms of function and time, affecting the overall effect of rapid treatment. Based on this, this application provides a rapid support device suitable for locally unstable soft rock slopes in mines. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rapid support device for locally unstable soft rock slopes in mines. It solves the problem that drainage design in existing technologies is mostly an auxiliary or post-contribution consideration, failing to be effectively and quickly integrated with the support structure itself. This results in a disconnect between drainage and support in terms of function and time, affecting the overall effect of rapid treatment.

[0006] This utility model provides a rapid support device for locally unstable soft rock slopes in mines, including a slope toe set at the bottom of the slope and a reinforcement area set on the inner side of the slope; The slope toe is provided with several support plates 1 and 2 from bottom to top, and a cover plate connected to the upper part of the support plate 2, wherein: The first support plate includes a plate body, and the plate body has at least one protrusion for engaging the second support plate on the side facing the second support plate. The second support plate includes a second plate body, which has one or more through holes to form a casting area for accommodating anchoring or filling materials. The cover plate includes a plate body three, on which a drain outlet and a drain pipe connected to the drain outlet are provided; The slope is provided with a steel reinforcement support assembly connected to the first support plate and the second support plate at the reinforced area.

[0007] As a further improvement of this utility model, the steel bar support assembly includes vertically and / or obliquely arranged support steel bars, the lower end of which passes through the reinforcement area, and the upper end passes through the through holes on the first support plate and / or the second support plate, thereby reinforcing the reinforcement area.

[0008] As a further improvement of this utility model, a positioning strip is provided on the side of the second plate near the first plate to cooperate with the slot of the first plate to form a fitting structure for splicing the first support plate and the second support plate.

[0009] As a further improvement of this utility model, a pressure block is provided on the other side of the plate body one. The pressure block is fixed to the slope foot and is used to support the support plate one and the support plate two. A positioning block is provided on the plate body one. The positioning block is located in the middle of the support bar and is used to position and cooperate with adjacent components or slopes during installation.

[0010] As a further improvement of this utility model, the plate body is provided with a lifting ring for hoisting the plate body. The plate body is provided with a support strip inside. The support strip and the positioning block form a cross support area. The inner side of the cross support area is provided with a filling area for filling with reinforcing material.

[0011] As a further improvement of this utility model, the second plate is provided with a sealing groove on the outside of the positioning strip, and the sealing groove is adapted to the protrusion of the first plate.

[0012] As a further improvement of this utility model, at least one water guide strip is provided on one side of the second plate, and the water guide strip has a drainage slope for draining accumulated rainwater.

[0013] As a further improvement of this utility model, the bottom of the second plate is provided with a pointed tip for guiding insertion toward the inclined surface of the slope and fixing the second plate.

[0014] As a further improvement of this utility model, the second plate is provided with a second lifting ring for hoisting, and the second plate is provided with an inner groove on the side facing the slope, the inner groove forming a accommodating hole.

[0015] As a further improvement of this utility model, a water guiding block is provided on the inner side of the plate body three. The water guiding block is inclined at a preset angle, and the lowest point faces the drain outlet.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model solves the prominent problems of traditional soft rock slope treatment methods, such as slow response, long construction period, and inability to quickly and effectively intervene during the critical period of crack development, by adopting an integrated design that combines prefabricated and assembled support plate combination structure with deep anchoring system. Furthermore, by prefabricating components such as support plates and cover plates as standard materials in advance, they can be quickly hoisted and spliced ​​once signs of instability such as cracks at the top of the slope are discovered. This effectively prevents local instability from escalating into a large-scale landslide. The interlocking positioning structure between the plates and the grouting space on the back of the plates ensure the installation strength and bonding density. Meanwhile, the steel reinforcement support components firmly connect the shallow support with the deep stable rock and soil mass, jointly resisting rock and soil pressure and significantly improving the overall stability of the slope. Furthermore, to prevent rainwater accumulation, surface water is diverted through water guide strips on the slab, water guide blocks on the cover plate, and drainage outlets, thereby reducing surface water accumulation. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the combined structure of the slope, pressure block, support plate one, support plate two, cover plate and steel reinforcement support components in this utility model. Figure 2 This is a front view schematic diagram of the support plate in this utility model; Figure 3 This is a schematic diagram of the two-dimensional structure of the support plate in this utility model; Figure 4 This is a schematic diagram of the front view of the back of the support plate in this utility model; Figure 5 This is a front view schematic diagram of the support plate two in this utility model; Figure 6 This is a schematic diagram of the two cross-sectional structure of the support plate in this utility model; Figure 7 This is a schematic diagram of the inner cross-sectional structure of the cover plate in this utility model.

[0018] In the diagram: 1. Slope; 2. Compression block; 3. Support plate one; 4. Support plate two; 5. Cover plate; 6. Reinforcing steel support assembly; 11. Slope toe; 12. Reinforced area; 31. Panel 1; 32. Raised bar; 33. Lifting ring 1; 34. Filling area; 35. Positioning block; 36. Support bar; 41. Slab II; 42. Pouring area; 43. Through hole; 44. Water guide strip; 45. Positioning strip; 46. Drainage slope; 47. Point; 48. Lifting ring II; 49. Inner groove; 51. Plate 3; 52. Drain outlet; 53. Drain pipe; 54. Water guide block. Detailed Implementation

[0019] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] like Figures 1 to 4 As shown, the present invention provides a rapid support device for locally unstable soft rock slopes in mines, including a slope toe 11 set at the bottom of the slope 1 and a reinforcement area set on the inner side of the slope 1.

[0022] Among them, the slope toe 11 of slope 1 is provided with several support plates 3 and 4 from bottom to top, and a cover plate 5 connected to the upper part of the support plate 4, wherein: The support plate 3 includes a plate body 31, and the plate body 31 is provided with at least one protrusion 32 for engaging the support plate 4 on the side facing the support plate 4. Support plate 2 4 includes plate body 2 41, on which one or more through holes 43 are provided to form a casting area 42 for receiving anchoring or filling material; The cover plate 5 includes a plate body 51, on which a drain outlet 52 and a drain pipe 53 connected to the drain outlet 52 are provided; Slope 1 is equipped with a steel reinforcement support assembly 6 at reinforcement area 12, which is connected to support plate 1 3 and support plate 2 4.

[0023] This embodiment provides a rapid support device for locally unstable soft rock slopes in mines. Specifically, it includes a slope toe 11 formed at the bottom of the slope 1. A reinforcement area 12 is pre-set at the part of the slope 1 that needs to be strengthened and stabilized. The reinforcement components include several first-type support plates and multiple second-type support plates installed sequentially from the slope toe 11 upwards. A cover plate 5 is connected to the uppermost second-type support plate.

[0024] The first type of support plate includes a plate body 31, which has at least one raised strip structure on one side near the upper second type of support plate. This raised strip 32 can be embedded into the corresponding part of the adjacent second type of support plate to achieve initial alignment and connection between the upper and lower plates. The main body of the second type of support plate is a plate body 41, which has several through holes. After the plate body is installed in place, these holes together form a grouting space that can accommodate grout or other solidification materials.

[0025] In some embodiments, the main body of the cover plate 5 is plate body 3 51, which has a water collection port on its surface and is connected to a water pipe to draw water out. In addition, a steel reinforcement support assembly 6 is also embedded in the reinforcement area 12 of the slope 1. The upper end of the assembly passes through or is connected to the holes on the support plate 1 3 and support plate 2 4, and the lower end is anchored in the reinforcement area 12 inside the slope 1, thereby connecting the support plate with the deep rock and soil mass into a whole.

[0026] In practical implementation, support plate 3 is usually installed first at the slope toe 11. Reinforcing ribs can be installed inside the plate to increase its rigidity, and lifting rings can be welded onto the plate for hoisting by lifting equipment. During installation, the protrusions 32 on plate 31 must be accurately aligned with the corresponding grooves or interfaces on the lower edge of the second type of support plate. When support plate 4 is installed, the through holes on plate 41 are not only used to form space for subsequent pouring but also allow the reinforcing steel support components 6 to pass through.

[0027] In some embodiments, the bottom of the plate 41 described above may be designed as a tapered wedge or a pointed tip 47 shape, which facilitates insertion into the soft surface soil of the slope 1 or a pre-excavated shallow trench during installation, thereby achieving rapid initial positioning.

[0028] In some embodiments, the side of the plate 41 facing the rock mass of the slope 1 may also be designed with a recessed area, so that a cavity is naturally formed between the plate and the slope surface. This cavity is connected with the above-mentioned through hole to form a larger grouting space, which is convenient to fill a larger amount of anchoring material and enhance the bonding effect.

[0029] Understandably, the cover plate 5 is installed at the top, and its water collection port is usually equipped with a guide protrusion to collect rainwater or seepage water flowing down the slope and guide it into the water pipe, effectively diverting it away from the slope toe 11 and reducing the softening effect of water on the soil and rock.

[0030] In some specific embodiments, the steel reinforcement support assembly 6 generally uses vertically or inclined steel bars, the lower part of which is firmly anchored in the reinforcement area 12 deep in the slope 1 by means of grouting, and the upper part passes through the holes of each layer of support plate. If necessary, tensioning or anchoring can be carried out above the plate to make the entire support system reliably connected with the stable soil and rock layer.

[0031] During construction, the slope 1 is usually repaired and reinforced first, and the area 12 is reinforced. Then, the support plates are hoisted and temporarily fixed from bottom to top. Next, the steel reinforcement support components 6 are installed and anchored. Finally, cement mortar or fine stone concrete is poured into the pouring area 42 formed on the second plate 41. After it solidifies, the support plates, steel reinforcement and the slope 1 rock and soil can form a stable composite support structure.

[0032] Please see Figure 1 , Figure 3 , Figure 4 And such as Figure 5 The steel reinforcement support assembly 6 includes vertically and / or obliquely arranged support steel bars, the lower end of which is connected to the reinforcement area 12, and the upper end passes through the through holes 43 on the first support plate 3 and / or the second support plate 4, thereby reinforcing the reinforcement area 12.

[0033] The steel reinforcement support component 6 is a key part of the effective connection between the support structure and the deep stable rock and soil mass. It is mainly composed of multiple high-strength steel bars, which are arranged in a way that is close to vertical or at a certain angle to the slope. During construction, it is necessary to first drill holes in the reinforcement area 12 of slope 1. The depth of the holes needs to penetrate the potential sliding surface and reach a more stable bottom layer. Then, the prepared support steel bars are placed into the holes. The lower end of the support steel bars is firmly anchored to the reinforcement area 12 by grouting material. The grouting material is usually cement mortar or special anchoring agent. After solidification, it can tightly bond the steel bars to the rock mass of the hole wall and provide sufficient anchoring force.

[0034] After the support plates are installed in place, the upper ends of the reinforcing bars pass through the pre-set through holes 43 on support plate 3 and support plate 4. The positions of these through holes 43 correspond to the arrangement of the reinforcing bars. After the upper ends of the reinforcing bars pass through the support plates, they can be fastened to the outside of the plates using a combination of nuts and washers, or welded to the reinforcing bars embedded in the plates, as required by the design, thereby pressing the support plates tightly onto the slope surface of slope 1. Through this connection method, the reinforcing bar support assembly 6 connects the shallow potentially unstable soil and rock mass with the deep reinforced area 12 into a whole through the support plates, effectively transferring the soil and rock pressure to the deep stable rock layers, forming a substantial reinforcement of the reinforced area 12, and significantly improving the overall stability of slope 1. The entire installation process of the assembly is closely coordinated with the hoisting, positioning, and adjustment steps of the support plates, ensuring that the support system can function quickly and effectively.

[0035] Please see Figure 4 , Figure 5 , Figure 6 And such as Figure 7 A positioning strip 45 is provided on the side of plate 2 41 near plate 1 31 to cooperate with the slot of plate 1 31 to form a fitting structure for splicing support plate 1 3 and support plate 2 4.

[0036] A pressure block 2 is provided on the other side of the plate 31. The pressure block 2 is fixed to the slope foot 11 and is used to support the support plate 3 and the support plate 4. A positioning block 35 is provided on the plate 31. The positioning block 35 is located in the middle of the support bar 36 and is used to position and cooperate with adjacent components or slope 1 during installation.

[0037] The plate body 31 is provided with a lifting ring 33 for hoisting the plate body 31. The plate body 31 is provided with a support bar 36 inside. The support bar 36 and the positioning block 35 form a cross support area. The inner side of the cross support area is provided with a filling area 34 for filling with reinforcing material.

[0038] A positioning strip 45 is provided on the side of plate 2 41. This positioning strip 45 can cooperate with the pre-reserved slot on the side of plate 1 31. When the two plates are spliced ​​together, the positioning strip 45 is embedded in the slot, which can limit the lateral misalignment between adjacent plates and achieve initial alignment and temporary positioning. A pressure block 2 is fixed on the side of plate 1 31 facing the bottom of slope 1. After the support structure is installed, the pressure block 2 can be tightly connected to the slope toe 11 of slope 1 by concrete pouring or mechanical anchoring, thereby providing the basic vertical support for the entire support structure and transferring part of the load from the upper plate to the slope toe 11 to stabilize the soil and rock. Inside plate 1 31, support strips 36 are arranged at regular intervals. At the middle position of the plate, the positioning block 35 intersects with these support strips 36 to form a grid-like cross support area, which significantly enhances the bending and compressive stiffness of the plate itself, making it less prone to deformation when hoisted and subjected to soil and rock pressure.

[0039] On the side of plate 31 facing the rock mass of slope 1, a cavity formed by support strips 36, positioning blocks 35, and the back of the plate constitutes a filling area 34. During construction, after the support plate is installed and connected to the steel reinforcement assembly, cement mortar and other reinforcing materials can be injected into this area through the pre-reserved holes on the plate. After the material solidifies, it can not only further strengthen the structural strength of the plate itself, but more importantly, it can fill the gap between the plate and the uneven slope surface, so that the support plate and the rock and soil of slope 1 are closely attached, thereby improving the contact state between the two and more effectively transferring stress. The top of plate 31 is also equipped with a lifting ring 33, which is usually welded or reliably connected to the internal steel reinforcement skeleton, and is used to insert slings during construction for stable lifting and installation by lifting equipment.

[0040] For further details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 The second plate 41 has a sealing groove on the outside of the positioning strip 45, which is adapted to the protrusion 32 of the first plate 31.

[0041] At least one water guide strip 44 is provided on one side of the plate 41. The water guide strip 44 has a drainage slope 46 for draining accumulated rainwater.

[0042] The bottom of plate 2 41 is provided with a pointed tip 47, which is used to guide the insertion towards the inclined surface of slope 1 and fix plate 2 41.

[0043] The plate 41 is provided with a lifting ring 48 for hoisting. The side of the plate 41 facing the slope 1 is provided with an inner groove 49, which forms a receiving hole for the through hole 43.

[0044] Please see Figure 7 The inner side of the plate 51 is provided with a water guide block 54, which is inclined at a preset angle and the lowest point faces the drain outlet 52.

[0045] A sealing groove is also provided on the outside of the positioning strip 45 of the second slab 41. When the protrusion 32 of the first slab 31 is inserted into the slot of the second slab 41 for splicing, this sealing groove can form a tighter fit with the side profile of the protrusion 32. In the subsequent grouting and filling process, the grout will flow in and fill this gap. After it solidifies, it can form an effective seal at the joint of the two slabs, preventing surface water from seeping into the slope from the gap between the slabs. On the outer surface of the second slab 41, at least one water guide strip 44 is provided. The water guide strip 44 extends from the upper end to the lower end of the slab and has a design slope from high to low. When surface rainfall or slope seepage water flows along the slab... When the water flows down the surface, the water guide strip 44 can collect the water flow and guide it to be discharged quickly along the preset path, reducing the time that the water flow accumulates on the slab surface and reducing its seepage pressure on the structural joints and the lower slope. The bottom edge of the second slab 41 is processed with a gradually narrowing wedge tip 47, which makes it easier for the slab to cut into the loose surface gravel soil of the slope 1 or the pre-prepared shallow trench during installation by means of its own weight or slight external force, so as to achieve rapid temporary positioning and initial fixation, creating conditions for subsequent precise adjustment and final anchoring. The second slab 41 is also equipped with a lifting ring 48 for construction hoisting. On the side of slab 2 41 facing the rock mass of slope 1, an inner groove 49 is machined. This design increases the gap between the back of the slab and the slope surface of slope 1. This gap connects with the pre-reserved through hole 43 on the slab, forming a larger grouting space. During grouting, more grout can be injected and filled here, forming a larger anchor body after solidification, significantly enhancing the anchoring force and integrity between the slab and slope 1. The inner surface of slab 3 51 is provided with a water guide block 54. The water guide block 54 is arranged at a preset angle, with its lowest end pointing to the drainage outlet 52 opened on slab 3 51. In this way, water flowing down from a higher point on slope 1 or seeping in from the gaps between the slabs will be effectively intercepted by the water guide block 54 when it comes into contact with the surface of slab 3 51 and guided to the drainage outlet 52. Then, it will be discharged through the drainage pipe 53 connected to it, ensuring that the water flow will not accumulate or flow disorderly at the top of the support structure, effectively realizing the active diversion of surface water.

[0046] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A rapid support device for locally unstable soft rock slopes in mines, comprising a slope toe (11) at the bottom of a slope (1) and a reinforcement area (12) on the inner side of the slope (1), characterized in that: The slope (1) has a plurality of support plates 1 (3) and support plates 2 (4) arranged from bottom to top at the toe (11) of the slope (1), and a cover plate (5) connected to the upper part of the support plates 2 (4), wherein: The first support plate (3) includes a plate body (31), and the first plate body (31) is provided with at least one protrusion (32) for engaging the second support plate (4) on the side facing the second support plate (4); The second support plate (4) includes a second plate body (41), and the second plate body (41) is provided with one or more through holes (43) to form a casting area (42) for accommodating anchoring or filling materials; The cover plate (5) includes a plate body three (51), and the plate body three (51) is provided with a drain outlet (52) and a drain pipe (53) connected to the drain outlet (52); The slope (1) is provided with a steel reinforcement support assembly (6) connected to the first support plate (3) and the second support plate (4) at the reinforced area (12).

2. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The steel reinforcement support assembly (6) includes vertically and / or obliquely arranged support steel bars, the lower end of which is connected to the reinforcement area (12), and the upper end passes through the through holes (43) on the first support plate (3) and / or the second support plate (4) to form reinforcement of the reinforcement area (12).

3. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The second plate (41) is provided with a positioning strip (45) on the side close to the first plate (31) to cooperate with the slot of the first plate (31) to form a fitting structure and splice the first support plate (3) and the second support plate (4).

4. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: A pressure block (2) is provided on the other side of the plate (31). The pressure block (2) is fixed to the slope foot (11) and is used to support the first support plate (3) and the second support plate (4). A positioning block (35) is provided on the plate (31). The positioning block (35) is located in the middle of the support bar (36) and is used to position and cooperate with adjacent components or slope (1) during installation.

5. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The plate body (31) is provided with a lifting ring (33) for hoisting the plate body (31). The plate body (31) is provided with a support strip (36) inside. The support strip (36) and the positioning block (35) form a cross support area. The inner side of the cross support area is provided with a filling area (34) for filling with reinforcing material.

6. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The second plate (41) is provided with a sealing groove on the outside of the positioning strip (45), which is adapted to the protrusion (32) of the first plate (31).

7. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: At least one water guide strip (44) is provided on one side of the second plate (41), the water guide strip (44) having a drainage slope (46) for draining accumulated rainwater.

8. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The bottom of the second plate (41) is provided with a pointed tip (47) for guiding insertion toward the inclined surface of the slope (1) to fix the second plate (41).

9. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The plate (41) is provided with a lifting ring (48) for hoisting. The plate (41) has an inner groove (49) on the side facing the slope (1), and the inner groove (49) forms a accommodating hole (43).

10. The rapid support device for locally unstable soft rock slopes in mines according to claim 1, characterized in that: The inner side of the plate three (51) is provided with a water guide block (54), which is inclined at a preset angle and the lowest point faces the drain outlet (52).

Images