Large-dip-angle roadway supporting device and using method thereof
By designing a large-incline tunnel support device, the roof plate and side wall support components are combined with anchor rods, anchor cable fixing, buffer plate and filter mesh structure, the problems of serious deformation and maintenance difficulties in the large-incline coal seam tunnel support are solved, and safe and efficient support effect and low-cost construction are achieved.
Patent Information
- Application Number
- CN202510569331.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-01
- Publication Date
- 2025-08-01
AI Technical Summary
During the support process, the large-incline coal seam recovery tunnel has problems such as serious deformation, difficulty in maintenance, high cost, and great safety hazards. The existing support devices are simple in structure and single in functions, making it difficult to meet the production needs of different coal mining sites.
A large-angle tunnel support device is designed, including a roof support assembly and a side wall support assembly, which is fixed by anchor rods and anchor cables, combined with buffer plates, filter cloths, and filter mesh structures, and uses rubber support columns to resist dynamic pressure impact, and is equipped with exhaust and drainage functions. The roof assembly is lifted and fixed through a hydraulic cylinder.
It achieves stable support for the side walls and roof of the tunnel, resists dynamic pressure shock, reduces maintenance costs, improves safety and construction efficiency, has exhaust and drainage functions, and is adapted to a variety of coal mining environments.
Smart Images
Figure CN120402124A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of roadway retaining support equipment, and particularly relates to a large dip angle roadway support device and a using method thereof. Background Art
[0002] Large dip angle coal seams with a coal seam dip angle of 25° to 45° have a certain reserve in the world. They are mainly distributed in more than 20 mining areas in Urumqi, Beijing, Huainan, Kailuan, Xuzhou, Changguang, Nantong, Zixing, Datong, etc. in China, and the proportion in the recoverable coal seams is greater than 14%.
[0003] At present, most of the mining roadways in large dip angle coal seams are supported by U-shaped steel collapsible supports or I-beam supports. During the mining period, the roadway deformation is serious, the maintenance times are many, and the maintenance is extremely difficult. Not only the support cost is high and the labor intensity of workers is large, but also the safe and normal production of the mine is seriously threatened, restricting the development of the safe and efficient production of the mine. In addition, the protection of gob-side entry retaining mainly uses support methods such as anchor bolts, single-column support, and materials stacked against the wall. In some places, composite boards are used to block the wall. When these devices perform the supporting action, most of them have a simple structure and a single function, and it is difficult to meet the production requirements of different coal mining sites; for the wall surface with strong dynamic pressure, the service life of a single composite board is difficult to guarantee under dynamic pressure, and frequent maintenance and repair are required, wasting manpower and material resources, and there are also potential safety hazards.
[0004] Therefore, it is necessary to design a new device to meet the production requirements of coal mining sites. Summary of the Invention
[0005] The purpose of the present invention is to provide a large dip angle roadway support device and a using method thereof in view of the deficiencies of the prior art. The specific scheme is as follows: A large dip angle roadway support device includes a roof support assembly. The two ends of the roof support assembly are connected to a bottom plate assembly through side wall support assemblies. Multiple anchor bolts and anchor cables extending into the coal seam roof are provided on the roof support assembly; multiple anchor bolts extending into the roadway side wall are provided on the side wall support assembly.
[0006] Based on the above, the roof support assembly includes a bottom frame. A collection cavity is provided inside the bottom frame. The bottom frame is connected to a buffer plate through multiple support columns. Multiple tension springs are further provided between the bottom frame and the buffer plate. Multiple through holes are provided on the buffer plate. A filter cloth and a filter screen are sequentially arranged on the buffer plate from bottom to top; Support shafts one are provided at both ends of the bottom frame.
[0007] Based on the above, the side wall support assembly includes a lifting plate which is provided with a cavity itself. At the top of the lifting plate, there is a first hinge frame hinged to the first support shaft. A fixed plate is slidably arranged inside the lifting plate. The fixed plate is provided with a groove. At the bottom of the fixed plate, there is a second support shaft. A fastening bolt extending into the groove is screwed on the lifting plate.
[0008] Based on the above, the bottom plate assembly includes two base plates connected together by a telescopic rod. Threaded rods are arranged on both of the two base plates. The two threaded rods are connected by a threaded cylinder. An adjusting bolt is arranged on the threaded cylinder. Hinge frames for hinging with the second support are arranged on both of the two base plates.
[0009] Based on the above, a first passage for the bolt and cable bolt is further arranged on the top plate support assembly; a second passage for the bolt is arranged on the fixed plate.
[0010] Based on the above, a retaining ring is fixed on the bolt and a fastening bolt is screwed on the bolt; a limiting head abutted against the top plate support assembly is arranged at the bottom end of the cable bolt.
[0011] Based on the above, a discharge port extending downward from the lowest position of the self - collection cavity is further arranged on the bottom frame.
[0012] Based on the above, the material of the support column is rubber.
[0013] According to the usage method of the above large - dip roadway support device, it is characterized by including the following steps: Step 1: First, drill bolt holes and cable bolt holes on the roadway roof according to the positions of the first passage and the second passage of the support device, and drill corresponding bolt holes on the roadway side wall. Step 2: Then, insert the corresponding bolts and cable bolts into the corresponding holes. First, inject an appropriate amount of resin into the bottom of the holes, and then inject an appropriate amount of mortar to fix the bolts and cable bolts. Step 3: Then, use a hydraulic cylinder or other jacking equipment to jack up the top plate assembly to fit with the roadway roof. Then, screw the positioning bolt on the bolt so that the bolt and the top plate assembly are fixed together, and sleeve the limiting head on the cable bolt and fix it to the cable bolt by welding. Step 4: Then, rotate the adjusting bolt so that the bolt on the roadway side wall passes through the second passage on the fixed plate and the side wall support assembly fits with the roadway side wall. Then, screw the corresponding positioning bolt on the bolt. Step 5: Finally, fix the position of the lifting plate by the fastening bolt, and the support operation is completed.
[0014] The present invention has outstanding substantial features and remarkable progress compared with the prior art. Specifically, the present invention has the following advantages: The large - dip roadway support device provided by the present invention is not only structurally designed to facilitate the stable support of the roadway sidewall and the roadway roof, but also the structural design of the roof support assembly can effectively resist the risks brought by the dynamic pressure impact of the roadway roof. At the same time, it is also convenient for exhausting gas and draining water from the roof to ensure the safety of the support structure. Moreover, the device also has the technical advantages of low cost and easy operation and construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0016] Figure 2 It is a schematic diagram of the partial structure of the present invention.
[0017] In the figure: 1. Roof support assembly; 2. Bottom frame; 2 - 1. Collection chamber; 3. Buffer plate; 3 - 1. Through - hole; 4. Support column; 5. Tension spring; 6. Filter cloth; 7. Filter screen; 8. Discharge port; 9. Anchor cable; 10. Limit head; 11. Anchor bolt; 12. Positioning bolt; 13. Retaining ring; 14. Support shaft one; 15. Side - wall support assembly; 16. Lifting plate; 16 - 1. Cavity; 17. Hinge frame one; 18. Fixed plate; 18 - 1. Groove; 19. Support shaft two; 20. Bottom - plate assembly; 20 - 1. Base plate; 20 - 2. Hinge frame two; 20 - 3. Lead screw; 20 - 4. Threaded barrel; 20 - 5. Adjusting bolt; 20 - 6. Telescopic rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions of the present invention will be further described in detail below through specific embodiments. Embodiment
[0019] As Figure 1-2 shown, the present invention provides a large - dip roadway support device, including a roof support assembly 1. The two ends of the roof support assembly 1 are connected to a bottom - plate assembly 20 through side - wall support assemblies 15. Multiple anchor bolts 11 and anchor cables 9 extending into the coal - seam roof are provided on the roof support assembly 1. Multiple anchor bolts 11 extending into the roadway sidewall are provided on the side - wall support assembly 15.
[0020] The above - mentioned roof support assembly 1 includes a bottom frame 2. A collection chamber 2 - 1 is arranged inside the bottom frame 2. The bottom frame 2 is connected to a buffer plate 3 through multiple support columns 4. Multiple tension springs 5 are also arranged between the bottom frame 2 and the buffer plate 3. Multiple through - holes 3 - 1 are provided on the buffer plate 3. A filter cloth 6 and a filter screen 7 are successively arranged on the buffer plate 3 from bottom to top. Support shafts one 14 are arranged at both ends of the bottom frame 2.
[0021] The above-mentioned side wall support assembly 15 includes a lifting plate 16. The lifting plate 16 itself is provided with a cavity 16-1. At the top of the lifting plate 16, there is a first hinge frame 17 hinged to the first support shaft 14. A fixed plate 18 is slidably arranged in the lifting plate 16. The fixed plate 18 is provided with a groove 18-1. At the bottom of the fixed plate 18, there is a second support shaft 19. A fastening bolt extending into the groove 18-1 is screwed on the lifting plate 16.
[0022] To facilitate the adjustment of the inclination angle of the side wall support assembly 15, the above-mentioned bottom plate assembly 20 includes two base plates 20-1 connected together by a telescopic rod 20-6. On both of the two base plates 20-1, there are screw rods 20-3. The two screw rods 20-3 are connected by a threaded cylinder 20-4. An adjusting bolt 20-5 is arranged on the threaded cylinder 20-4. On both of the two base plates 20-1, there are second hinge frames 20-2 used for hinging with the second support.
[0023] To facilitate the passing of the anchor bolts 11 and cable bolts 9 through the roof support assembly 1, the above-mentioned roof support assembly 1 is further provided with a first passage for the anchor bolts 11 and cable bolts 9; to facilitate the passing of the roadway side wall anchor bolts 11 through the side wall support assembly 15, the above-mentioned fixed plate 18 is provided with a second passage for the anchor bolts 11. It should be noted that the cross-sectional shapes of the above-mentioned first passage and second passage are both strip-shaped.
[0024] To facilitate the formation of a stable support by the anchor bolts 11 and cable bolts 9 and the entire support device, a retaining ring 13 is fixed on the anchor bolt 11 and a fastening bolt is screwed; at the bottom end of the cable bolt 9, there is a limiting head 10 abutting against the roof support assembly 1.
[0025] Considering that there may be water dripping or gas exhausting phenomena on the roadway roof, a discharge port 8 extending downward from the lowest position of the self-collection cavity 2-1 is further arranged on the bottom frame 2.
[0026] During coal mine production, there may be a phenomenon of roof gangue falling. To ensure the impact resistance of the roof support assembly 1, the above-mentioned support column 4 is made of rubber.
[0027] According to the above-mentioned usage method of the large dip angle roadway support device, it is characterized by including the following steps: Step 1: First, drill anchor bolt 11 holes and cable bolt 9 holes on the roadway roof according to the positions of the first passage and second passage of the support device, and drill corresponding anchor bolt 11 holes on the roadway side wall; Step 2: Then, insert the corresponding anchor bolts 11 and cable bolts 9 into the corresponding holes. First, inject an appropriate amount of resin into the bottom of the holes, and then inject an appropriate amount of mortar to fix the anchor bolts 11 and cable bolts 9; Step 3: Then, use a hydraulic cylinder or other jacking equipment to lift the roof plate assembly to fit with the roadway roof. Next, screw the positioning bolt 12 onto the bolt 11 so that the bolt 11 and the roof plate assembly are fixed together. Then, slip the limit head 10 onto the cable bolt 9 and fix it to the cable bolt 9 by welding. Step 4: Next, rotate the adjusting bolt 20-5 so that the bolt 11 on the roadway sidewall passes through the roadway two on the fixing plate 18 and the sidewall support assembly 15 fits with the roadway sidewall. Then, screw the corresponding positioning bolt 12 onto the bolt 11. Step 5: Finally, fix the position of the lifting plate 16 with the fastening bolt, and the support operation is completed.
[0028] The large dip roadway support device provided by the present invention is not only convenient for stably supporting the roadway sidewall and the roadway roof in terms of its structural design, but also the structural design of the roof support assembly 1 can effectively resist the risks brought by the dynamic pressure impact of the roadway roof. At the same time, it is also convenient for exhausting air and draining water from the roof to ensure the safety of the support structure. Moreover, the device also has the technical advantages of low cost and easy operation and construction.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present invention or make equivalent replacements for some technical features. Without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed in the present invention.
Claims
1. A support device for a roadway with a large dip angle, characterized in that: It includes a roof support assembly (1). Both ends of the roof support assembly (1) are connected to a floor assembly (20) through sidewall support assemblies (15). Multiple bolts (11) and cable bolts (9) extending into the coal seam roof are provided on the roof support assembly (1); multiple bolts (11) extending into the roadway sidewall are provided on the sidewall support assembly (15).
2. The large dip roadway support device according to claim 1, characterized in that: The roof support assembly (1) includes a bottom frame (2). A collection chamber (2-1) is provided inside the bottom frame (2). The bottom frame (2) is connected to a buffer plate (3) through multiple support columns (4). Multiple tension springs (5) are further provided between the bottom frame (2) and the buffer plate (3). Multiple through holes (3-1) are provided on the buffer plate (3). A filter cloth (6) and a filter screen (7) are sequentially provided on the buffer plate (3) from bottom to top; Support shafts one (14) are provided at both ends of the bottom frame (2).
3. The large dip roadway support device according to claim 2, wherein: The sidewall support assembly (15) includes a lifting plate (16). A cavity (16-1) is provided in the lifting plate (16) itself. A hinge bracket one (17) hinged to the support shaft one (14) is provided at the top of the lifting plate (16). A fixing plate (18) is slidably provided inside the lifting plate (16). A groove (18-1) is provided on the fixing plate (18). A support shaft two (19) is provided at the bottom of the fixing plate (18). A fastening bolt extending into the groove (18-1) is screwed on the lifting plate (16).
4. The large dip roadway support device according to claim 3, characterized in that: The floor assembly (20) includes two base plates (20-1) connected together through a telescopic rod (20-6). Threaded rods (20-3) are provided on both of the two base plates (20-1). The two threaded rods (20-3) are connected through a threaded cylinder (20-4). An adjusting bolt (20-5) is provided on the threaded cylinder (20-4). Hinge brackets two (20-2) for hinging with the support two are provided on both of the two base plates (20-1).
5. The large dip roadway support device according to claim 4, characterized in that: A passage one for the bolts (11) and cable bolts (9) is further provided on the roof support assembly (1); A passage two for the bolts (11) is provided on the fixing plate (18).
6. The large dip roadway support device according to claim 5, characterized in that: A retaining ring (13) is fixed on the bolt (11), and a fastening bolt is screwed; A limiting head (10) abutting against the roof support assembly (1) is provided at the bottom end of the cable bolt (9).
7. The large dip roadway support device according to claim 6, wherein: An emission port (8) extending downward from the lowest position of the collection chamber (2-1) to below the bottom frame (2) is further provided on the bottom frame (2).
8. The large dip roadway support device according to claim 7, characterized in that: The material of the support column (4) is rubber.
9. The method for using the large dip roadway support device according to claim 8, characterized in that It includes the following steps: Step 1: First, drill bolt (11) holes and cable bolt (9) holes on the roadway roof according to the positions of the passage one and passage two of the support device, and drill corresponding bolt (11) holes on the roadway sidewall; Step 2: Then, insert the corresponding bolts (11) and cable bolts (9) into the corresponding holes. First, inject an appropriate amount of resin into the bottom of the holes, and then inject an appropriate amount of mortar to fix the bolts (11) and cable bolts (9); Step 3: Then, use a hydraulic cylinder or other jacking equipment to lift the roof plate assembly to fit with the roadway roof. Next, screw the positioning bolt (12) onto the anchor bolt (11) to fix the anchor bolt (11) and the roof plate assembly together, and slip the limit head (10) onto the cable bolt (9) and fix it to the cable bolt (9) by welding; Step 4: Then, rotate the adjusting bolt (20-5) to make the anchor bolt (11) on the roadway side wall pass through the second roadway on the fixed plate (18), and make the side wall support assembly (15) fit with the roadway side wall. Then, screw the corresponding positioning bolt (12) onto the anchor bolt (11); Step 5: Finally, fix the position of the lifting plate (16) with the fastening bolt, and the support operation is completed.