Anchoring and reinforcing device for soft rock roadway in coal mine

Abstract

The application discloses a kind of coal mine soft rock roadway's anchor cable full-length anchoring reinforcement device, including soft rock roadway body, grouting pre-hole is set in the inner wall of soft rock roadway body, hollow anchor rod is arranged in the inner cavity of grouting pre-hole, the surface of hollow anchor rod is fixedly covered with locating seat, the surface of locating seat is fixedly connected with auxiliary ring, and anti-falling steel net is twisted and installed between adjacent two auxiliary rings.The application is used in cooperation with protective cover, fixing ring and reinforcing assembly, can be used to connect two hollow anchor rods by screw transmission, further improve the overall support stability;By using movable seat, hexagon bolt and internal hexagonal screw rod, the hexagon bolt can be obliquely nailed into the soft rock roadway body, ensuring the stability of installation, and the internal hexagonal screw rod can prevent the hexagon bolt from being removed and limited, which is more suitable for the needs of users in coal mine underground operation buffer.

Description

Technical Field

[0001] This invention relates to the field of coal mine roadway technology, specifically to a full-length anchoring and reinforcement device for soft rock roadways in coal mines. Background Technology

[0002] In coal-rich mining areas, coal resources are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically excavated to extract the coal; this is called an underground coal mine. When the coal seam is very close to the surface, the surface soil layer is typically stripped directly to extract the coal; this is called an open-pit coal mine. For soft rock tunnels in underground coal mines, in order to ensure the safety of the tunnels, a combination of anchoring and spraying is generally used for support, and reinforcement devices are used to ensure the stability of the installation.

[0003] Patent application publication number CN103206233B discloses a method for full-length anchoring of anchor cables in soft rock roadways of coal mines. The method involves drilling holes in the working face of the soft rock roadway, installing anchor cables into the drilled holes as usual, placing a Z-shaped grouting pipe at the opening of the grouting hole, and laying a steel mesh tightly against the roadway surface around the opening of the grouting hole. A tray and locking device are installed at the exposed end of the anchor cable, and a pre-tightening force is applied to the anchor cable. Grout is then sprayed onto the surface of the soft rock roadway, covering the outer wall of the grouting hole. After the sprayed layer stabilizes, grout is injected into the grouting hole through the exposed end of the Z-shaped grouting pipe until the hole is filled, achieving full-length anchoring of the anchor cable. Ultimately, this method strengthens the surrounding rock structure, improves the bearing capacity of the surrounding rock, and controls the deformation of the surrounding rock.

[0004] However, the above-mentioned device still has some shortcomings in actual use. The most obvious one is that the technology only uses basic anchor spraying for reinforcement treatment, and cannot provide multiple reinforcement protection for the environment in the tunnel. It is generally not suitable for complex environments in soft rock tunnels, and the overall reinforcement and stability effect is average. It has certain limitations in use and cannot meet the user's high stability installation and reinforcement needs.

[0005] Therefore, it is necessary to invent a full-length anchoring and reinforcement device for anchor cables in soft rock roadways of coal mines to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a full-length anchoring reinforcement device for soft rock roadways in coal mines, which has the advantage of multiple reinforcements and solves the problems that the device cannot provide multiple reinforcements for the roadway environment, has limited applicability to complex environments in soft rock roadways, and has only a mediocre overall reinforcement and stability effect.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a full-length anchoring reinforcement device for soft rock roadways in coal mines, comprising a soft rock roadway body, wherein a grouting pre-hole is formed in the inner wall of the soft rock roadway body, a hollow anchor rod is inserted through the inner cavity of the grouting pre-hole, a positioning seat is fixedly sleeved on the surface of the hollow anchor rod, an auxiliary ring is fixedly connected to the surface of the positioning seat, and a fall-prevention steel mesh is installed between two adjacent auxiliary rings, a material-penetrating protrusion is fixedly embedded on the surface of the hollow anchor rod and in the inner cavity of the grouting pre-hole, and a movable threaded part is threaded on the surface of the hollow anchor rod away from the grouting pre-hole. The movable seat has hexagonal bolts running through its surface. An internal hexagonal screw is threaded onto the outer ring of the movable seat. A protective cover is threaded onto the inner side of the hollow anchor rod's surface. A fixing ring is fixedly connected to one side of the protective cover. A reinforcing component, including a connecting ring, is mounted on the surface of the fixing ring. A fixing seat is welded to the surface of the connecting ring. A lead screw is movably connected to the end of the fixing seat away from the connecting ring via a bearing. An auxiliary sleeve is fitted onto the surface of the lead screw, and the inner wall of the auxiliary sleeve has positioning threads that mate with the lead screw.

[0008] Preferably, the inner diameter of the grouting pre-hole is larger than the outer diameter of the hollow anchor rod, the number of the material-penetrating protrusion rings is several, and one end of the hexagonal bolt passes through the positioning seat, is threadedly connected to the positioning seat, and extends into the interior of the soft rock tunnel body.

[0009] Preferably, a fixing block is fixedly embedded on the surface of the anti-fall steel mesh, and a positioning hole is opened through the surface of the fixing block.

[0010] Preferably, the surface of the hollow anchor rod is provided with mounting threads that cooperate with the movable seat and the protective cover, and the connection between the protective cover and the hollow anchor rod is sealed.

[0011] Preferably, an auxiliary block is fixedly connected to the side of the positioning seat near the soft rock tunnel body, and a sealing ring is fixedly sleeved on the outer ring of the auxiliary block and located in the inner cavity of the grouting pre-hole.

[0012] Preferably, the surfaces of the positioning seat and the movable seat are respectively provided with screw holes for use with hexagonal bolts and internal hexagonal screws, and the positioning seat, the movable seat and the protective cover are in contact with each other from the outside to the inside.

[0013] Preferably, a guide block is movably fitted onto the surface of the internal hexagonal screw via a bearing, and a guide groove is formed on the surface of the hexagonal bolt to cooperate with the guide block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. This invention uses a protective cover, a fixing ring, and a reinforcing component together, which has the advantages of connection and reinforcement. It can use a threaded transmission method to reinforce the connection between two hollow anchor rods, further improving the overall support stability and meeting the needs of users.

[0016] 2. This invention uses a movable seat, hexagonal bolts, and internal hexagonal screws in combination, which has the advantage of stable installation. It can drive the hexagonal bolts into the soft rock tunnel body at an angle to ensure the stability of the installation. The internal hexagonal screws can prevent the hexagonal bolts from falling off and limit their movement. When applied to the buffer of underground coal mine operations, it is more in line with the needs of users.

[0017] 3. This invention uses a combination of anti-fall steel mesh, auxiliary rings, fixing blocks and positioning holes to intercept and reinforce the structure. It can intercept and protect against the risk of falling rocks from above during underground operations, further improving the safety of soft rock tunnels. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic cross-sectional view of a partial structure of the soft rock tunnel body of the present invention;

[0020] Figure 3 This is a cross-sectional schematic diagram of the reinforcement component of the present invention;

[0021] Figure 4 This is a side view of the anti-fall steel mesh of the present invention;

[0022] Figure 5 For the present invention Figure 2 Enlarged diagram of A in the middle;

[0023] Figure 6 This is a side view of the hexagonal bolt of the present invention.

[0024] In the diagram: 1. Soft rock tunnel body; 2. Reinforcement component; 201. Screw rod; 202. Auxiliary sleeve; 203. Fixing seat; 204. Connecting ring; 205. Positioning thread; 3. Anti-fall steel mesh; 4. Hollow anchor rod; 5. Grouting pre-hole; 6. Through-material protrusion ring; 7. Protective cover; 8. Fixing ring; 9. Auxiliary block; 10. Movable seat; 11. Mounting thread; 12. Threaded hole; 13. Hexagonal screw; 14. Auxiliary ring; 15. Positioning seat; 16. Hexagonal bolt; 17. Guide groove; 18. Guide block; 19. Fixing block; 20. Positioning hole. Detailed Implementation

[0025] Please see Figures 1-6A full-length anchoring reinforcement device for soft rock roadways in coal mines includes a soft rock roadway body 1. A grouting pre-hole 5 is formed in the inner wall of the soft rock roadway body 1. A hollow anchor rod 4 is inserted through the inner cavity of the grouting pre-hole 5. A positioning seat 15 is fixedly fitted onto the surface of the hollow anchor rod 4. An auxiliary ring 14 is fixedly connected to the surface of the positioning seat 15. A fall-prevention steel mesh 3 is twisted between two adjacent auxiliary rings 14. A material-penetrating protrusion ring 6 is fixedly embedded on the surface of the hollow anchor rod 4 within the inner cavity of the grouting pre-hole 5. A movable seat 10 is threaded onto the surface of the hollow anchor rod 4 on the side away from the grouting pre-hole 5. A hexagonal bolt 1 is inserted through the surface of the movable seat 10. 6. The outer ring of the movable seat 10 is threaded with an internal hexagon screw 13. The inner side of the surface of the hollow anchor rod 4 is threaded with a protective cover 7. A fixing ring 8 is fixedly connected to one side of the protective cover 7. A reinforcing component 2 is installed on the surface of the fixing ring 8. The reinforcing component 2 includes a connecting ring 204. The connecting ring 204 is sleeved on the fixing ring 8. A fixing seat 203 is welded to the surface of the connecting ring 204. The end of the fixing seat 203 away from the connecting ring 204 is movably connected to a lead screw 201 through a bearing. An auxiliary sleeve 202 is sleeved on the surface of the lead screw 201. The inner wall of the auxiliary sleeve 202 is provided with positioning threads 205 that cooperate with the lead screw 201.

[0026] By setting the lead screw 201 and the positioning screw 205, the thread transmission function can be achieved, and the overall length of the reinforcement component 2 can be avoided by arbitrarily adjusting it in the installation state.

[0027] By setting the connecting ring 204 and the fixing ring 8, the position of the fixing seat 203 can be flexibly adjusted, which can meet the installation requirements of soft rock tunnel body 1 with different curvatures, and the overall application range is wider.

[0028] The inner diameter of the grouting pre-hole 5 is larger than the outer diameter of the hollow anchor rod 4. There are several material-penetrating protrusion rings 6. One end of the hexagonal bolt 16 passes through the positioning seat 15 and is threadedly connected to the positioning seat 15 and extends into the interior of the soft rock tunnel body 1.

[0029] The surface of the anti-fall steel mesh 3 is fixedly inlaid with a fixing block 19, and the surface of the fixing block 19 is provided with a positioning hole 20;

[0030] The surface of the hollow anchor rod 4 is provided with mounting threads 11 that mate with the movable seat 10 and the protective cover 7. The connection between the protective cover 7 and the hollow anchor rod 4 is sealed.

[0031] An auxiliary block 9 is fixedly connected to the side of the positioning seat 15 near the soft rock tunnel body 1. A sealing ring is fixedly sleeved on the outer ring of the auxiliary block 9 and located in the inner cavity of the grouting pre-hole 5.

[0032] The surfaces of the positioning seat 15 and the movable seat 10 are respectively provided with screw holes 12 for use with hexagonal bolts 16 and internal hexagonal screws 13. The positioning seat 15, the movable seat 10 and the protective cover 7 are in contact with each other from the outside to the inside.

[0033] A guide block 18 is movably sleeved on the surface of the internal hexagonal screw 13 via a bearing, and a guide groove 17 is opened on the surface of the hexagonal bolt 16 to cooperate with the guide block 18.

[0034] By setting up anti-fall steel mesh 3, it is possible to intercept falling rocks or soil layers on the inner wall of the soft rock tunnel body 1 in the installed state, thereby improving the overall safety of the soft rock tunnel body 1.

[0035] By setting the material-permeable protruding ring 6, the grout can be evenly injected into the grouting pre-hole 5, and the contact area with the grout is increased in the solidified state, thereby improving the stability of the anchor spraying support. By setting the protective cover 7, the end face of the hollow anchor rod 4 can be sealed and protected in the installation state, and the fixed installation requirements of the fixing ring 8 are met.

[0036] By setting the auxiliary block 9, the grouting pre-hole 5 can be sealed and protected in the installation state to prevent uncured grout from flowing out at will. By setting the installation thread 11, the thread installation requirements of the movable seat 10 and the protective cover 7 can be met, ensuring the installation stability of the movable seat 10 and the protective cover 7.

[0037] By setting the screw hole 12, the thread installation space requirements between the hexagonal bolt 16 and the movable seat 10, between the hexagonal bolt 16 and the positioning seat 15, and between the internal hexagonal screw 13 and the movable seat 10 can be met;

[0038] By setting the guide groove 17 and guide block 18, the hexagonal bolt 16 can be side-limited and blocked in the installation state to ensure the installation stability of the hexagonal bolt 16. By setting the fixing block 19 and positioning hole 20, the installation positioning requirements of the peripheral reinforcement components can be met, further improving the reinforcement stability.

[0039] Example 1:

[0040] A full-length anchoring reinforcement device for soft rock roadways in coal mines includes a soft rock roadway body 1. A grouting pre-hole 5 is formed in the inner wall of the soft rock roadway body 1. A hollow anchor rod 4 is inserted through the inner cavity of the grouting pre-hole 5. A positioning seat 15 is fixedly fitted onto the surface of the hollow anchor rod 4. An auxiliary ring 14 is fixedly connected to the surface of the positioning seat 15. A fall-prevention steel mesh 3 is twisted between two adjacent auxiliary rings 14. A material-penetrating protrusion ring 6 is fixedly embedded on the surface of the hollow anchor rod 4 within the inner cavity of the grouting pre-hole 5. A movable seat 10 is threaded onto the surface of the hollow anchor rod 4 on the side away from the grouting pre-hole 5. A hexagonal bolt 1 is inserted through the surface of the movable seat 10. 6. The outer ring of the movable seat 10 is threaded with an internal hexagon screw 13. The inner side of the surface of the hollow anchor rod 4 is threaded with a protective cover 7. A fixing ring 8 is fixedly connected to one side of the protective cover 7. A reinforcing component 2 is installed on the surface of the fixing ring 8. The reinforcing component 2 includes a connecting ring 204. The connecting ring 204 is sleeved on the fixing ring 8. A fixing seat 203 is welded to the surface of the connecting ring 204. The end of the fixing seat 203 away from the connecting ring 204 is movably connected to a lead screw 201 through a bearing. An auxiliary sleeve 202 is sleeved on the surface of the lead screw 201. The inner wall of the auxiliary sleeve 202 is provided with positioning threads 205 that cooperate with the lead screw 201.

[0041] By setting the lead screw 201 and the positioning screw 205, the thread transmission function can be achieved, and the overall length of the reinforcement component 2 can be avoided by arbitrarily adjusting it in the installation state.

[0042] By setting the connecting ring 204 and the fixing ring 8, the position of the fixing seat 203 can be flexibly adjusted, which can meet the installation requirements of soft rock tunnel body 1 with different curvatures, and the overall application range is wider.

[0043] The surface of the anti-fall steel mesh 3 is fixedly inlaid with a fixing block 19, and the surface of the fixing block 19 is provided with a positioning hole 20;

[0044] The surface of the hollow anchor rod 4 is provided with mounting threads 11 that mate with the movable seat 10 and the protective cover 7. The connection between the protective cover 7 and the hollow anchor rod 4 is sealed.

[0045] The surfaces of the positioning seat 15 and the movable seat 10 are respectively provided with screw holes 12 for use with hexagonal bolts 16 and internal hexagonal screws 13. The positioning seat 15, the movable seat 10 and the protective cover 7 are in contact with each other from the outside to the inside.

[0046] By setting up anti-fall steel mesh 3, it is possible to intercept falling rocks or soil layers on the inner wall of the soft rock tunnel body 1 in the installed state, thereby improving the overall safety of the soft rock tunnel body 1.

[0047] By setting the material-permeable protruding ring 6, the grout can be evenly injected into the grouting pre-hole 5, and the contact area with the grout is increased in the solidified state, thereby improving the stability of the anchor spraying support. By setting the protective cover 7, the end face of the hollow anchor rod 4 can be sealed and protected in the installation state, and the fixed installation requirements of the fixing ring 8 are met.

[0048] By setting the installation thread 11, the thread installation requirements of the movable seat 10 and the protective cover 7 can be met, ensuring the installation stability of the movable seat 10 and the protective cover 7.

[0049] By setting the screw hole 12, the thread installation space requirements between the hexagonal bolt 16 and the movable seat 10, between the hexagonal bolt 16 and the positioning seat 15, and between the internal hexagonal screw 13 and the movable seat 10 can be met;

[0050] By setting the fixing block 19 and the positioning hole 20, the installation and positioning requirements of the peripheral reinforcement components can be met, and the reinforcement stability can be further improved.

[0051] Fall protection steel mesh 3 is a type of flexible mesh, mainly steel wire rope mesh, used to cover and wrap the slope to be protected. It restricts the weathering and erosion or damage of the slope rock and soil and prevents the collapse of dangerous rocks (reinforcement function), or controls the movement of falling rocks within a certain range (containment function). It has high flexibility, high protective strength, and easy deployment. The flexibility and interception strength of the system are sufficient to absorb and disperse the expected impact energy of falling rocks. The design and use of energy dissipation rings further improve the impact resistance of the system.

[0052] Hollow anchor bolts (4) are slender rods that penetrate deep into the soil and rock to control its deformation. As tension members embedded in the strata, one end connects to the engineering structure, while the other end extends into the ground. The entire anchor bolt is divided into a free section and an anchoring section. The free section transmits the tension at the anchor head to the anchor body area, applying prestress to the anchor bolt. The anchoring section is the area where cement grout bonds the prestressing tendons to the soil layer. Its function is to increase the bonding friction between the anchor body and the soil layer, increasing the bearing capacity of the anchor body and transmitting the tension from the free section to the deeper soil. It is mainly used for systematic support of surrounding rock with moderately good geological conditions, offering the following advantages: rapid initial support, control of surrounding rock deformation, and assurance of surrounding rock stability; the hollow design allows the anchor bolt to function as a grouting pipe, avoiding grout loss caused by pulling out grouting pipes in traditional construction processes; full grouting and the ability to perform pressure grouting, improving project quality; due to the function of various components, the rod body has excellent centering, allowing the grout to completely encapsulate the entire length of the anchor bolt, preventing corrosion and achieving long-term support.

[0053] A full-length anchoring and reinforcement device for anchor cables in soft rock roadways of coal mines includes the following steps:

[0054] A: All components are in the correct state. First, the grouting pre-hole 5 is opened on the soft rock tunnel body 1 using the drilling equipment, and the hollow anchor rod 4 is moved and inserted into the grouting pre-hole 5. The auxiliary block 9 is not inserted into the grouting pre-hole 5. The grout is continuously injected into the grouting pre-hole 5 through the hollow anchor rod 4 and the material-permeable protruding ring 6 using the grouting equipment until the grout overflows from the inside of the grouting pre-hole 5. At this time, the hollow anchor rod 4 is moved and inserted into the grouting pre-hole 5, and the auxiliary block 9 enters the grouting pre-hole 5. The positioning seat 15 is embedded in the soft rock tunnel body 1, and multiple streams of grout overflow from the inner end of the hollow anchor rod 4. The workers thread the movable seat 10 and the protective cover 7 onto the installation thread 11 in sequence. The protective cover 7 can seal and cover the inner end of the hollow anchor rod 4. When the hollow anchor rod 4 is installed at the top, the protective cover 7 should be screwed in and fitted in time.

[0055] B: Screw in the hexagonal bolt 16 through the movable seat 10 and the positioning seat 15 and nail it obliquely into the soft rock tunnel body 1. The obliquely set hexagonal bolt 16 enhances the stability of the installation. Then, with the assistance of the guide groove 17 and the guide block 18, place the guide block 18 in the guide groove 17, and use the installation tool to continuously rotate the internal hexagonal screw 13 into the movable seat 10. After the installation is completed, with the cooperation of the guide groove 17 and the guide block 18, the hexagonal bolt 16 cannot move and come off at will, which plays the role of preventing detachment and reinforcement, which is more in line with the use and installation requirements and achieves stable reinforcement in one go.

[0056] C: The connecting ring 204, the fixing seat 203, and the lead screw 201 are pre-installed on the fixing ring 8. First, rotate one end of the lead screw 201 so that it is fully inserted into the auxiliary sleeve 202 with the cooperation of the positioning thread 205. At this time, the distance between the auxiliary sleeve 202 and the other end of the lead screw 201 should meet the installation space requirements. After aligning the other end of the lead screw 201 with the auxiliary sleeve 202, rotate the auxiliary sleeve 202 so that one end of the lead screw 201 can be gradually disengaged from the auxiliary sleeve 202, while the other end of the lead screw 201 gradually enters the auxiliary sleeve 202. Finally, both lead screws 201 are inserted into the auxiliary sleeve 202 and are threadedly connected with the positioning thread 205 to achieve the purpose of secondary reinforcement.

[0057] D: The anti-fall steel mesh 3 is attached to the inner wall of the soft rock tunnel body 1, and the steel wire near the auxiliary ring 14 is fixedly connected to the auxiliary ring 14 by twisting. This can play the role of anti-fall interception and prevent falling rocks from occurring in the soft rock tunnel body 1. The staff can also select the appropriate position of the fixing block 19 by using external bolts or external anchor rods, and nail the reinforcement parts through the positioning hole 20 into the soft rock tunnel body 1 to carry out three reinforcement protections.

[0058] In summary, the anchor cable full-length anchoring reinforcement device for soft rock roadways in this coal mine, by setting up reinforcement components 2, anti-fall steel mesh 3, hollow anchor rods 4, grouting pre-holes 5, material-penetrating protrusion rings 6, auxiliary blocks 9, movable seats 10, mounting threads 11, internal hexagonal screws 13, auxiliary rings 14, fixing blocks 19, and positioning holes 20, solves the problems that the device cannot provide multiple reinforcement protections for the roadway environment, has limited applicability to complex environments in soft rock roadways, and has only a mediocre overall reinforcement and stability effect.

Claims

1. A full-length anchoring and reinforcement device for soft rock roadways in coal mines, comprising a soft rock roadway body (1), characterized in that: The inner wall of the soft rock tunnel body (1) is provided with a grouting pre-hole (5). A hollow anchor rod (4) is installed through the inner cavity of the grouting pre-hole (5). A positioning seat (15) is fixedly sleeved on the surface of the hollow anchor rod (4). An auxiliary ring (14) is fixedly connected to the surface of the positioning seat (15). A fall-prevention steel mesh (3) is installed between two adjacent auxiliary rings (14). A material-penetrating protrusion ring (6) is fixedly embedded on the surface of the hollow anchor rod (4) and in the inner cavity of the grouting pre-hole (5). A movable seat (10) is threaded on the surface of the hollow anchor rod (4) and away from the grouting pre-hole (5). A hexagonal bolt (16) is installed through the surface of the movable seat (10). An internal hexagonal bolt is threaded on the outer ring of the movable seat (10). The screw (13) has a protective cover (7) threaded on the inner side of the surface of the hollow anchor rod (4). A fixing ring (8) is fixedly connected to one side of the protective cover (7). A reinforcing component (2) is installed on the surface of the fixing ring (8). The reinforcing component (2) includes a connecting ring (204). The connecting ring (204) is sleeved on the fixing ring (8). A fixing seat (203) is welded to the surface of the connecting ring (204). A lead screw (201) is movably connected to the end of the fixing seat (203) away from the connecting ring (204) through a bearing. An auxiliary sleeve (202) is sleeved on the surface of the lead screw (201). A positioning thread (205) that mates with the lead screw (201) is opened on the inner wall of the auxiliary sleeve (202).

2. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The inner diameter of the grouting pre-hole (5) is larger than the outer diameter of the hollow anchor rod (4). The number of material-penetrating protrusions (6) is several. One end of the hexagonal bolt (16) passes through the positioning seat (15), is threadedly connected to the positioning seat (15), and extends into the interior of the soft rock tunnel body (1).

3. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The surface of the anti-fall steel mesh (3) is fixedly inlaid with a fixing block (19), and the surface of the fixing block (19) is provided with a positioning hole (20).

4. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The surface of the hollow anchor rod (4) is provided with mounting threads (11) that cooperate with the movable seat (10) and the protective cover (7). The connection between the protective cover (7) and the hollow anchor rod (4) is sealed.

5. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The positioning seat (15) is fixedly connected to an auxiliary block (9) on the side near the soft rock tunnel body (1). The outer ring of the auxiliary block (9) and the inner cavity of the grouting pre-hole (5) are fixedly fitted with a sealing ring.

6. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The surfaces of the positioning seat (15) and the movable seat (10) are respectively provided with screw holes (12) for use with hexagonal bolts (16) and internal hexagonal screws (13), and the positioning seat (15), the movable seat (10) and the protective cover (7) are in contact from the outside to the inside.

7. The anchor cable full-length anchoring reinforcement device for soft rock roadways in coal mines according to claim 1, characterized in that: The surface of the internal hexagonal screw (13) is fitted with a guide block (18) through a bearing, and the surface of the hexagonal bolt (16) is provided with a guide groove (17) that cooperates with the guide block (18).

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