A grouting reinforcement device for unstable rock masses in mines

Abstract

This invention provides a grouting reinforcement device for unstable rock masses in mines. Compared with existing technologies, vertical grouting grooves are opened at the top of both the secondary unstable rock and the parent rock, and an inclined grouting groove is opened at the bottom of the secondary unstable rock. Vertical and inclined insertion tubes are inserted into the vertical and inclined grouting grooves, respectively. The studs at the bottom of the vertical insertion tubes can be locked with the screw holes of the inclined insertion tubes, thereby locking the three insertion tubes in the secondary unstable rock and the parent rock. A secondary locking connection is made through the internal insertion columns and inclined rods to enhance the stability after connection and cope with the prestress of the secondary unstable rock. Concrete grout is added into the vertical and inclined grouting grooves through the grouting holes on the surface of the vertical and inclined insertion tubes. After solidification, the outer ends of the secondary unstable rock and the parent rock are locked by external fixing components. Anchor ropes are wrapped around the fixing rings at the top of the vertical and inclined insertion tubes to further strengthen the prestress of the secondary unstable rock from the outside.

Description

Technical Field

[0001] This invention relates to the field of unstable rock mass reinforcement technology, specifically to a grouting reinforcement device for unstable rock masses in mines. Background Technology

[0002] Dangerous rock masses refer to large, cracked boulders located on steep slopes. Some of these boulders are quite large, while others are just isolated boulders on a steep slope. Dangerous rock masses may fall from slopes due to vibrations or heavy rain. If a dangerous rock mass falls onto the roadbed, it can cause traffic accidents. Such situations are common in mines, where mining operations exacerbate the problem of dangerous rock masses.

[0003] The reinforcement of unstable rock masses is usually achieved by drilling anchor bolts into both the unstable rock mass and the parent rock mass simultaneously, and then binding the two anchor bolts together with steel strands to fix the relative position of the unstable rock mass and the parent rock mass through the prestress formed by the two anchor bolts.

[0004] Traditional reinforcement methods typically involve injecting cement mortar after anchor bolts are fixed. However, this method has several drawbacks. First, the fixing points are relatively singular, and the connections between these points are made through external anchor ropes. These external connection structures are easily damaged by environmental factors, leading to the failure of the reinforcement and protection of the unstable rock mass. This necessitates frequent inspections and maintenance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a grouting reinforcement device for unstable rock masses in mines, solving the problems mentioned in the background section. This invention features a novel structure, with vertical grouting grooves at the top of both the sub-rock and the parent rock, and an inclined grouting groove at the bottom of the sub-rock. Vertical and inclined insertion tubes are inserted into the vertical and inclined grouting grooves respectively. The studs at the bottom of the vertical insertion tubes can lock with the screw holes of the inclined insertion tubes, thus locking the three tubes in the sub-rock and parent rock. A secondary locking connection is then established through internal studs and inclined rods to enhance stability and address the prestress of the sub-rock. Concrete grout is added into the vertical and inclined grouting grooves through grouting holes on the surfaces of the vertical and inclined insertion tubes. After solidification, the outer ends of the sub-rock and parent rock are locked by external fasteners. Anchor ropes are routed around the fixing rings at the top of the vertical and inclined insertion tubes, further reinforcing the prestress of the sub-rock from the outside.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a grouting reinforcement device for unstable rock masses in mines, comprising a parent rock, with a secondary unstable rock located on the outer side of the parent rock. Two vertical grouting grooves are symmetrically opened at the top of both the parent rock and the secondary unstable rock, and two inclined grouting grooves are symmetrically opened on the side of the secondary unstable rock. The inclined grouting grooves are collinear with the vertical grouting grooves, and the bottom of the vertical grouting grooves communicates with the inclined grouting grooves. Grouting components are provided inside the inclined and vertical grouting grooves. Each grouting component includes a vertical insertion tube and an inclined insertion tube. A vertical insertion tube is inserted into the vertical grouting groove, and an inclined insertion tube is inserted into the inclined grouting groove. The two vertical insertion tubes are fixed to the inclined insertion tubes, and multiple grouting holes are opened on the surfaces of the vertical and inclined insertion tubes. External fixing members are provided on the outer sides of the parent rock and the secondary unstable rock corresponding to the vertical and inclined grouting grooves.

[0007] Furthermore, the grouting assembly also includes a stud, with the stud fixed at the bottom of the vertical insertion tube, and a threaded hole opened on the surface of the inclined insertion tube corresponding to the stud, with the stud meshing inside the threaded hole.

[0008] Furthermore, a fixing plate is fixed inside the vertical insertion tube and the oblique insertion tube. A pin is slidably inserted into the surface of the fixing plate of the vertical insertion tube. An oblique rod is fixed inside the fixing plate of the oblique insertion tube. A threaded head is fixed at the bottom of the pin. Both the bottom of the vertical insertion tube and the pin are provided with through holes. An insertion hole is provided at the position of the threaded head on the oblique rod. The pin passes through the through hole and engages with the insertion hole of the oblique rod.

[0009] Furthermore, the fixing plate has grooves on the periphery of the corresponding insertion post and the diagonal rod.

[0010] Furthermore, the vertical insertion tube and the oblique insertion tube are fixed with a fixing cap.

[0011] Furthermore, the peripheral fixing component includes a top plate, the top of the parent rock is provided at the position of the vertical insertion pipe and the vertical insertion pipe is fixedly passed through the top plate, the corner plate is provided at the corner of the secondary dangerous rock, the top plate is fixed with a connecting plate on the side facing the corner plate and the connecting plate is fixed with the corner plate by locking bolts.

[0012] Furthermore, a fixing ring is fixed to the top of the fixing cover, and an anchor rope passes through the fixing ring.

[0013] Furthermore, the top and sides of the corner plate are fixed with clamps, and the two sides of the anchor rope turning point are fixed inside the clamps.

[0014] The beneficial effects of this invention: This invention provides a grouting reinforcement device for unstable rock masses in mines, comprising: parent rock; secondary unstable rock; peripheral fixing components; top plate; corner plate; connecting plate; locking bolt; clamp; anchor rope; grouting assembly; fixing cover; fixing ring; vertical grouting groove; inclined grouting groove; vertical insertion pipe; inclined insertion pipe; grouting hole; stud; screw hole; insertion post; inclined rod; fixing plate; groove; insertion hole; threaded head; through hole;

[0015] 1. In this invention, the insert is rotated along the fixed plate through the through hole and inserted into the insertion hole of the inclined rod. The connection strength after grouting is further enhanced by locking the vertical and inclined insertion tubes.

[0016] 2. The present invention is fixed by corner plate, top plate, connecting plate and locking bolt. Then the middle turning part of the anchor rope is fixed inside the clamp. Through the guidance and limitation of the clamp, it passes through the fixing ring on the outer fixing cover of the inclined insertion tube and the vertical insertion tube, thereby forming a fixation of the outer perimeter of the sub-dangerous rock and the parent rock, and strengthening the connection between the internal inclined insertion tube and the vertical insertion tube.

[0017] 3. Compared with the prior art, this invention provides vertical grouting grooves at the top of both the sub-rock and the parent rock, and an inclined grouting groove at the bottom of the sub-rock. Vertical and inclined insertion tubes are inserted into the vertical and inclined grouting grooves respectively. The studs at the bottom of the vertical insertion tubes can be locked with the screw holes of the inclined insertion tubes, thus locking the three insertion tubes in the sub-rock and the parent rock. A secondary locking connection is then made through the internal insertion studs and inclined rods to enhance the stability of the connection and cope with the prestress of the sub-rock. Concrete grout is added into the vertical and inclined grouting grooves through the grouting holes on the surface of the vertical and inclined insertion tubes. After solidification, the outer ends of the sub-rock and the parent rock are locked by external fasteners. Anchor ropes are wrapped around the fixing rings at the top of the vertical and inclined insertion tubes to further strengthen the prestress of the sub-rock from the outside. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention;

[0019] Figure 2 This is a schematic diagram of the external fixing component structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention;

[0020] Figure 3 This is one of the schematic diagrams of the grouting component structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention;

[0021] Figure 4 This is the second schematic diagram of the grouting component structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention;

[0022] Figure 5 This is the third schematic diagram of the grouting component structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention;

[0023] Figure 6 This is the fourth schematic diagram of the grouting component structure of a grouting reinforcement device for unstable rock masses in mines according to the present invention. In the diagram: 1. Parent rock; 2. Secondary unstable rock; 3. External fixing components; 31. Top plate; 32. Corner plate; 33. Connecting plate; 34. Locking bolt; 35. Clamp; 36. Anchor rope; 4. Grouting component; 41. Fixing cover; 42. Fixing ring; 43. Vertical grouting groove; 44. Inclined grouting groove; 45. Vertical insertion pipe; 46. Inclined insertion pipe; 47. Grouting hole; 48. Stud; 49. Threaded hole; 410. Insertion post; 411. Diagonal rod; 412. Fixing plate; 413. Leakage groove; 414. Insertion hole; 415. Threaded head; 416. Through hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] Please see Figures 1 to 6 This invention provides a technical solution: a grouting reinforcement device for unstable rock masses in mines, comprising a parent rock 1, a secondary unstable rock 2 located on the outer side of the parent rock 1, two vertical grouting grooves 43 symmetrically formed on the top of both the parent rock 1 and the secondary unstable rock 2, and two inclined grouting grooves 44 symmetrically formed on the side of the secondary unstable rock 2. The inclined grouting grooves 44 are collinear with the vertical grouting grooves 43, and the bottom of the vertical grouting grooves 43 is connected to the inclined grouting grooves 44. Grouting components 4 are installed inside the grouting tank 44 and the vertical grouting tank 43. Each grouting component 4 includes a vertical insertion tube 45 and an inclined insertion tube 46. A vertical insertion tube 45 is inserted inside the vertical grouting tank 43, and an inclined insertion tube 46 is inserted inside the inclined grouting tank 44. The two vertical insertion tubes 45 and the inclined insertion tube 46 are fixed together. Multiple grouting holes 47 are formed on the surfaces of both the vertical insertion tubes 45 and the inclined insertion tube 46. The parent rock 1 and the secondary dangerous rock 2 correspond to the vertical grouting components 47. The outer sides of the grouting groove 43 and the inclined grouting groove 44 are provided with peripheral fixing members 3. Vertical grouting grooves 43 are opened at the top of both the sub-dangerous rock 2 and the parent rock 1, and inclined grouting grooves 44 are opened at the bottom of the sub-dangerous rock 2. Vertical insertion tubes 45 and inclined insertion tubes 46 are respectively inserted into the vertical grouting grooves 43 and the inclined grouting grooves 44. The stud 48 at the bottom of the vertical insertion tube 45 can be locked with the screw hole 49 of the inclined insertion tube 46, so that the three insertion tubes are locked in the sub-dangerous rock 2 and the parent rock 1. The secondary locking connection is achieved through the internal insert 410 and inclined rod 411 to enhance the stability of the connection and address the prestress of the sub-dangerous rock 2. Concrete grout is added into the vertical grouting groove 43 and the inclined grouting groove 44 through the grouting holes 47 on the surface of the vertical insert 45 and the inclined insert 46 of the grouting assembly 4. After solidification, the outer ends of the sub-dangerous rock 2 and the parent rock 1 are locked by the outer fixing parts 3, further strengthening the prestress of the sub-dangerous rock 2 from the outside.

[0026] In this embodiment, the grouting assembly 4 further includes a stud 48. The bottom of the vertical insertion tube 45 is fixed with a stud 48, and the inclined insertion tube 46 has a screw hole 49 on its surface corresponding to the stud 48. The stud 48 is engaged with the inside of the screw hole 49. The stud 48 of the vertical insertion tube 45 and the screw hole 49 of the inclined insertion tube 46 are engaged and inserted to form a frame structure of a grouting channel, which enhances stability and grouting strength.

[0027] In this embodiment, a fixing plate 412 is fixed inside the vertical insertion tube 45 and the oblique insertion tube 46. An insertion post 410 is slidably inserted into the surface of the fixing plate 412 of the vertical insertion tube 45. An oblique rod 411 is fixed inside the fixing plate 412 of the oblique insertion tube 46. A threaded head 415 is fixed to the bottom of the insertion post 410. Both the bottom of the vertical insertion tube 45 and the threaded post 48 have through holes 416. An insertion hole 414 is formed on the oblique rod 411 corresponding to the position of the threaded head 415. The insertion post 410 passes through... The through hole 416 engages with the insertion hole 414 of the inclined rod 411. The fixing plate 412 has grooves 413 on the periphery of the corresponding insertion post 410 and the inclined rod 411. After the vertical insertion tube 45 and the inclined insertion tube 46 are fixed, the insertion post 410 is rotated along the fixing plate 412 through the through hole 416 and inserted into the insertion hole 414 of the inclined rod 411. The vertical insertion tube 45 and the inclined insertion tube 46 lock together to further enhance the connection strength after grouting. The grooves 413 of the fixing plate 412 facilitate the flow of grout.

[0028] In this embodiment, a fixing cover 41 is fixed around the vertical insertion tube 45 and the inclined insertion tube 46. The peripheral fixing component 3 includes a top plate 31. The top of the parent rock 1 is provided with a top plate 31 at the position of the vertical insertion tube 45, and the vertical insertion tube 45 is fixedly passed through the top plate 31. Angle plates 32 are provided at the corner positions of the secondary dangerous rock 2. A connecting plate 33 is fixed to the side of the top plate 31 facing the angle plate 32, and the connecting plate 33 and the angle plate 32 are fixed together by locking bolts 34. A fixing ring 42 is fixed to the top of the fixing cover 41, and an anchor rope 36 passes through the fixing ring 42. The top and sides of the corner plate 32 are fixed with clamps 35, and the two sides of the turning point of the anchor rope 36 are fixed inside the clamps 35. The outer perimeter of the parent rock 1 and the secondary dangerous rock 2 is first fixed by the corner plate 32, the top plate 31, the connecting plate 33 and the locking bolts 34. Then the middle turning part of the anchor rope 36 is fixed inside the clamps 35. Through the guidance and limitation of the clamps 35, it passes through the fixing ring 42 on the fixing cover 41 on the outside of the inclined insertion tube 46 and the vertical insertion tube 45, thereby forming a fixation on the perimeter of the secondary dangerous rock 2 and the parent rock 1, and strengthening the connection between the internal inclined insertion tube 46 and the vertical insertion tube 45.

[0029] Vertical grouting grooves 43 are provided at the top of both the sub-dangerous rock 2 and the parent rock 1. An inclined grouting groove 44 is provided at the bottom of the sub-dangerous rock 2. Vertical insertion tubes 45 and inclined insertion tubes 46 are inserted into the vertical grouting grooves 43 and 44, respectively. The stud 48 at the bottom of the vertical insertion tube 45 can be locked with the screw hole 49 of the inclined insertion tube 46, thus locking the three insertion tubes at the sub-dangerous rock 2 and the parent rock 1. A secondary locking is then achieved through the internal insertion post 410 and inclined rod 411. To enhance stability after connection and address the prestress of the sub-rock 2, concrete grout is added into the vertical grouting groove 43 and the inclined grouting groove 44 through the grouting holes 47 on the surfaces of the vertical insertion pipe 45 and the inclined insertion pipe 46. After solidification, the outer ends of the sub-rock 2 and the parent rock 1 are locked by the outer fixing component 3. The anchor rope 36 passes around the fixing ring 42 at the top of the vertical insertion pipe 45 and the inclined insertion pipe 46 to further strengthen the prestress of the sub-rock 2 from the outside.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grouting reinforcement device for unstable rock masses in mines, comprising parent rock (1), characterized in that: The parent rock (1) has a secondary dangerous rock (2) on its outer side. Two vertical grouting grooves (43) are symmetrically opened on the top of both the parent rock (1) and the secondary dangerous rock (2), and two inclined grouting grooves (44) are symmetrically opened on the side of the secondary dangerous rock (2). The inclined grouting grooves (44) and the vertical grouting grooves (43) are on the same straight line, and the bottom of the vertical grouting grooves (43) is connected to the inclined grouting grooves (44). Grouting components (4) are provided inside the inclined grouting grooves (44) and the vertical grouting grooves (43). The grouting components (4) contain… Includes a vertical insertion tube (45) and an inclined insertion tube (46). The vertical grouting groove (43) is filled with a vertical insertion tube (45), and the inclined grouting groove (44) is filled with an inclined insertion tube (46). The two vertical insertion tubes (45) and the inclined insertion tube (46) are fixed together. Multiple grouting holes (47) are opened on the surface of the vertical insertion tube (45) and the inclined insertion tube (46). The parent rock (1) and the secondary dangerous rock (2) are provided with peripheral fixing members (3) on the outer side of the vertical grouting groove (43) and the inclined grouting groove (44). The grouting assembly (4) also includes a stud (48). The bottom of the vertical insertion tube (45) is fixed with a stud (48). The inclined insertion tube (46) has a screw hole (49) on its surface corresponding to the stud (48), and the stud (48) is engaged with the inside of the screw hole (49). The vertical insertion tube (45) and the oblique insertion tube (46) are fixed with a fixing plate (412). A pin (410) is slidably inserted into the surface of the fixing plate (412) of the vertical insertion tube (45). An oblique rod (411) is fixed inside the fixing plate (412) of the oblique insertion tube (46). A threaded head (415) is fixed at the bottom of the pin (410). A through hole (416) is opened at the bottom of the vertical insertion tube (45) and the pin (48). An insertion hole (414) is opened at the position of the threaded head (415) of the oblique rod (411). The pin (410) passes through the through hole (416) and engages with the insertion hole (414) of the oblique rod (411). The vertical insertion tube (45) and the oblique insertion tube (46) are fixed with a fixing cover (41); a fixing ring (42) is fixed on the top of the fixing cover (41), and an anchor rope (36) passes through the fixing ring (42).

2. The grouting reinforcement device for unstable rock masses in mines according to claim 1, characterized in that: The fixing plate (412) has grooves (413) on the periphery of the corresponding insertion post (410) and diagonal rod (411).

3. The grouting reinforcement device for unstable rock masses in mines according to claim 1, characterized in that: The peripheral fixing component (3) includes a top plate (31). The top of the parent rock (1) is provided with a top plate (31) at the position of the vertical insertion tube (45), and the vertical insertion tube (45) is fixedly passed through the top plate (31). The corner of the secondary dangerous rock (2) is provided with a corner plate (32). A connecting plate (33) is fixed on the side of the top plate (31) facing the corner plate (32), and the connecting plate (33) and the corner plate (32) are fixed by locking bolts (34).

4. The grouting reinforcement device for unstable rock masses in mines according to claim 3, characterized in that: The top and sides of the corner plate (32) are fixed with clamps (35), and the two sides of the turning point of the anchor rope (36) are fixed inside the clamps (35).

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