High stability surrounding rock grouting device

Abstract

The application provides a high-stability surrounding rock grouting device and relates to the technical field of surrounding rock grouting. In order to overcome the shortcoming that grouting effect is reduced due to stratification or precipitation of slurry. The technical scheme is as follows: a high-stability surrounding rock grouting device, which comprises a supporting frame, the supporting frame is rotationally connected with a mounting shell, a storage box is arranged on one side of the mounting shell, a water pump is arranged on the storage box, the water pump is connected with a conveying pipe, the conveying pipe penetrates through the mounting shell, the mounting shell is rotationally connected with a feeding pipe, the feeding pipe is rotationally connected with the conveying pipe, the two ends of the conveying pipe are respectively connected with the feeding pipe and the storage box, the feeding pipe is fixedly connected with a drill bit, and the inside of the conveying pipe is rotationally connected with uniformly distributed stirring blades. The slurry is stirred by the stirring blades, stratification or precipitation of the slurry is prevented, the slurry is prevented from being unevenly contacted with the surrounding rock, and the grouting effect is reduced.

Description

Technical Field

[0001] This invention relates to the field of surrounding rock grouting technology, and more specifically to a highly stable surrounding rock grouting device. Background Technology

[0002] Rock grouting refers to creating holes in rocks, soil, and other geological bodies, and injecting a specific grouting liquid into the holes to fill the voids and bind tightly to the geological body, thereby reinforcing and stabilizing the geological body, increasing its bearing capacity, and reducing water flow velocity.

[0003] During the grouting process, in order to ensure that the grout fills the voids, it is necessary to continuously inject grout, so that there is a large pressure between the grout and the hole. However, the pressure between the grout and the hole may cause the grouting device to be squeezed out of the hole, which will make it impossible to guarantee the stability of the grouting and thus lead to grouting failure. In addition, the grout may also flow out along the hole, resulting in grout waste. Moreover, if the grout separates or settles, it will cause it to not fully contact the surrounding rock, reducing the grouting effect. Summary of the Invention

[0004] In order to overcome the disadvantages of the grouting device being squeezed out of the surrounding rock cavities by the grout, which reduces the stability during grouting and causes the grout to stratify or settle, resulting in a decrease in the grouting effect, the present invention provides a highly stable surrounding rock grouting device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A highly stable surrounding rock grouting device includes a support frame, a mounting shell rotatably connected to the support frame, a storage tank on one side of the mounting shell, a water pump mounted in the storage tank, a conveying pipe connected to the water pump, the conveying pipe penetrating the mounting shell, a feeding pipe rotatably connected to the mounting shell, the feeding pipe being rotatably connected to the conveying pipe, both ends of the conveying pipe being connected to the feeding pipe and the storage tank respectively, a drill bit fixedly connected to one end of the feeding pipe, the drill bit having a discharge hole, the feeding pipe being connected to the discharge hole of the drill bit, a first gear fixedly connected to the other end of the feeding pipe, a motor mounted in the mounting shell, a second gear meshing with the first gear fixedly connected to the output shaft of the motor, uniformly distributed stirring blades rotatably connected inside the conveying pipe, the stirring blades being spiral-shaped, a fixing component for fixing the feeding pipe, and a sealing component for sealing the surrounding rock cavities, the water pump pumping slurry from the storage tank to the conveying pipe, the slurry driving the stirring blades to rotate, the stirring blades agitating the slurry.

[0007] Preferably, the spiral directions of adjacent stirring blades are opposite to ensure thorough mixing of the slurry.

[0008] Preferably, the fixing component includes a fixing ring fixedly connected to the feeding pipe. The fixing ring is provided with circumferentially equidistant limiting holes. A rotating plate is rotatably connected to one end of the feeding pipe near the mounting shell. The fixing ring is located on the side of the rotating plate near the mounting shell. The rotating plate is located outside the surrounding rock hole. A torsion spring is fixedly connected between the fixing ring and the rotating plate. The rotating plate is provided with circumferentially equidistant first limiting grooves, all of which are inclined to one side. A limiting pin is slidably connected to the rotating plate. The limiting pin is in limiting engagement with the adjacent limiting hole. A circumferentially equidistant array of fixing rods is slidably connected to the feeding pipe. The fixing rods are equidistantly distributed. An extrusion plate is fixedly connected to the equidistant fixed rod. A first limiting rod is fixedly connected to one end of the extrusion plate near the rotating plate. The first limiting rod is in sliding engagement with the adjacent first limiting groove. The axis of the fixing rod intersects and is perpendicular to the axis of the feeding pipe.

[0009] Preferably, the fixed rod is internally slidably connected to a movable rod, and the outer ends of the movable rods, which are circumferentially equidistant, are all set to be conical. The movable rods pass through adjacent extrusion plates, and springs are fixed between the movable rods and adjacent extrusion plates.

[0010] Preferably, when no slurry is introduced into the feeding pipe, the movable rod does not extend beyond the adjacent extrusion plate to prevent the extrusion plate from failing to contact the rock wall.

[0011] Preferably, the sealing assembly includes a movable block, which is slidably connected to the feed pipe. The feed pipe is fixedly connected to an installation ring, which is located on the side of the movable block near the drill bit. A spring is fixedly connected between the movable block and the installation ring, and an air bladder is installed between the movable block and the installation ring. When the slurry does not enter the feed pipe, the air bladder does not contact the inner wall of the surrounding rock. The movable block is provided with a second limiting groove, and a second limiting rod is fixedly connected to one end of the extrusion plate near the movable block.

[0012] Preferably, the mounting ring fits snugly against the drill bit to prevent the feed tube from being difficult to remove from the drill bit.

[0013] Preferably, the feeding tube is slidably connected to a third limiting rod, the axis of the third limiting rod intersects and is perpendicular to the axis of the feeding tube, a spring is fixed between the third limiting rod and the feeding tube, and the movable block is provided with a third limiting groove.

[0014] Preferably, both the second limiting groove and the third limiting groove are provided with inclined surfaces. The inclined surface of the second limiting groove is engaged with the second limiting rod for limiting, and the inclined surface of the third limiting groove is engaged with the third limiting rod for limiting.

[0015] Preferably, when the extrusion plate contacts the surrounding rock hole, the third limiting groove is located directly above the third limiting rod.

[0016] The beneficial technical effects of this invention are:

[0017] The highly stable surrounding rock grouting device of the present invention initially fixes the feeding pipe by an extrusion plate. As the grouting pressure increases, the movable rod penetrates into the surrounding rock, further fixing the feeding pipe and ensuring the stability of the device during grouting. This prevents the pressure generated during grouting from squeezing the feeding pipe out of the surrounding rock cavity, thus preventing grouting failure. The movable block extrudes the air bladder, compressing the gas inside. The air bladder bulges outward and adheres to the inner wall of the surrounding rock cavity, forming a seal. As the grouting pressure increases, the movable block continues to move to the left, further compressing the gas in the air bladder. The air bladder is further compressed and adheres to the inner wall of the surrounding rock, further ensuring the stability of the device. The device ensures stability during grouting to prevent grout from flowing out of the surrounding rock cavities, thus avoiding grout waste and reducing grouting efficiency. Stirring the grout with agitator blades prevents grout stratification or sedimentation during grouting, ensuring sufficient and uneven contact between the grout and the surrounding rock, thereby reducing grouting effectiveness. When no grout is introduced into the feed pipe, the movable rod does not extend beyond the adjacent extrusion plate. This prevents the extrusion plate from contacting the inner wall of the surrounding rock cavity after the movable rod has contacted it, ensuring no friction between the extrusion plate and the cavity wall. This prevents the extrusion plate from securing the feed pipe, causing grout in the surrounding rock cavity to squeeze out of the feed pipe. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This diagram shows the positional relationship between the mounting shell and rotating plate, among other components, of this invention.

[0020] Figure 3 This is a diagram showing the positional relationship between the conveying pipe and the feeding pipe, etc., of the present invention.

[0021] Figure 4 This is a diagram showing the positional relationship between the first gear and other components such as the feed tube in this invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged view of the 3D structure at point A in the image.

[0023] Figure 6 This is a three-dimensional structural diagram of the stirring blade and conveying pipe of the present invention.

[0024] Figure 7 This is a diagram showing the positional relationship between the rotating plate and the mounting shell and other parts of this invention.

[0025] Figure 8 This is a three-dimensional structural diagram of the fixing ring and rotating plate and other parts of the present invention.

[0026] Figure 9 This diagram shows the connection relationship between the feeding tube and the rotating plate and other parts of this invention.

[0027] Figure 10 This is a diagram showing the positional relationship between the fixed rod and the movable rod of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the movable block and airbag components of the present invention.

[0029] Figure 12 This is a schematic diagram showing the positional relationship between the third limiting rod and other parts such as the movable block in this invention.

[0030] The markings in the attached diagram are as follows: 101-Support frame, 102-Mounting shell, 103-Storage bin, 104-Water pump, 105-Conveying pipe, 106-Feeding pipe, 107-Drill bit, 108-First gear, 109-Motor, 110-Second gear, 111-Agitator blade, 201-Fixing ring, 202-Limiting hole, 203-Rotating plate, 204-First limiting groove, 205-Limiting pin, 206-Fixing rod, 207-Extrusion plate, 208-First limiting rod, 209-Moving rod, 301-Moving block, 3011-Mounting ring, 302-Airbag, 303-Second limiting rod, 304-Second limiting groove, 305-Third limiting rod, 306-Third limiting groove. Detailed Implementation

[0031] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. Certain embodiments of the invention will be described more fully below with reference to the accompanying drawings, and some, but not all, of these embodiments will be shown. In fact, various embodiments of the invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to enable the invention to meet applicable legal requirements.

[0032] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Example 1:

[0034] A highly stable surrounding rock grouting device, such as Figures 1-6As shown, the device includes a support frame 101, which is rotatably connected to a mounting shell 102. The support frame 101 is telescopic to accommodate holes of different heights. A storage tank 103 is located on the right side of the mounting shell 102, storing slurry. A water pump 104 is installed on the left side of the storage tank 103, connected to a conveying pipe 105. The conveying pipe 105 passes through the right side of the mounting shell 102. A feeding pipe 106 is rotatably connected to the mounting shell 102, and is rotatably connected to the conveying pipe 105. Both ends of the conveying pipe 105 are connected to the feeding pipe 106 and the storage tank 103, respectively. A drill bit 107 is fixedly connected to the left end of the feeding pipe 106, which has a discharge hole. The feeding pipe 106 communicates with the discharge hole of the drill bit 107. A first tooth is fixedly connected to the right end of the feeding pipe 106. The wheel 108 and the lower side of the housing 102 are equipped with an electric motor 109. The output shaft of the electric motor 109 is fixedly connected to a second gear 110 that meshes with the first gear 108. The inside of the conveying pipe 105 is rotatably connected to three evenly distributed stirring blades 111. The stirring blades 111 are spiral in shape, and the spiral directions of adjacent stirring blades 111 are opposite, which is used to fully stir the slurry. The feeding pipe 106 is equipped with a fixing component for fixing the feeding pipe 106. The feeding pipe 106 is also equipped with a sealing component for sealing the surrounding rock holes. The water pump 104 pumps the slurry in the storage tank 103 to the conveying pipe 105. The slurry drives the stirring blades 111 to rotate. The stirring blades 111 stir the slurry to prevent the slurry from separating and settling, which would prevent the slurry from fully contacting the surrounding rock holes and reduce the grouting effect.

[0035] like Figures 7-10As shown, the fixing assembly includes a fixing ring 201, which is fixedly connected to the right end of the feeding pipe 106. The fixing ring 201 is provided with circumferentially equidistant limiting holes 202. A rotating plate 203 is rotatably connected to the right end of the feeding pipe 106. The fixing ring 201 is located on the right side of the rotating plate 203, which is located outside the surrounding rock hole. A torsion spring is fixed between the fixing ring 201 and the rotating plate 203. The rotating plate 203 is provided with circumferentially equidistant first limiting grooves 204. Six circumferentially equidistant first limiting grooves 204 are provided. All grooves 204 are inclined grooves. A limiting pin 205 is slidably connected to the rotating plate 203. The limiting pin 205 engages with the adjacent limiting hole 202 to limit the rotation plate 203. The feeding pipe 106 is slidably connected to several sets of axially equidistant fixed rods 206. Each set of fixed rods 206 has six rods arranged circumferentially. Extrusion plates 207 are fixedly connected to the equidistant fixed rods 206. The outer surfaces of the circumferentially equidistant extrusion plates 207 are patterned to increase friction between them and the rock wall, thus strengthening the... The extrusion plate 207 effectively secures the feeding pipe 106. Made of a soft material, the extrusion plate 207 tightly conforms to the inner wall of the surrounding rock cavity. A first limiting rod 208 is fixedly connected to the right end of the extrusion plate 207, and this first limiting rod 208 slides into the adjacent first limiting groove 204. The axis of the fixing rod 206 intersects and is perpendicular to the axis of the feeding pipe 106. A movable rod 209 is slidably connected inside the fixing rod 206. The end of the movable rod 209 closest to the surrounding rock is conical, used to penetrate the surrounding rock and reinforce it. The fixed effect prevents the feed pipe 106 from being squeezed out of the surrounding rock holes during grouting. The movable rod 209 passes through the adjacent extrusion plate 207. A spring for resetting the movable rod 209 is fixed between the movable rod 209 and the adjacent extrusion plate 207. When no grout is introduced into the feed pipe 106, the movable rod 209 does not extend out of the adjacent extrusion plate 207. This prevents the extrusion plate 207 from losing its fixed effect after the movable rod 209 contacts the rock wall, thus affecting the stability of the feed pipe 106.

[0036] When construction workers use this device to grout the surrounding rock, they start the motor 109. At this time, the torsion spring between the rotating plate 203 and the fixed ring 201 is in a torsional state. The output shaft of the motor 109 drives the first gear 108 to rotate through the second gear 110. The first gear 108 drives the feeding pipe 106 to rotate, which in turn drives the fixed ring 201 to rotate. The fixed ring 201 drives the rotating plate 203 to rotate through the limit pin 205. The feeding pipe 106 drives the drill bit 107 to drill a hole in the surrounding rock. When the drill bit 107 drills the surrounding rock to the depth required by the construction workers, they turn off the motor 109, so that the feeding pipe 106 and the drill bit 107 stop rotating. After the construction workers turn off the motor 109, the grouting process begins. Workers pull the limiting pin 205 out of the limiting hole 202. Under the action of the torsion spring between the rotating plate 203 and the fixed ring 201, the rotating plate 203 rotates. The rotating plate 203 drives the sealing component to move. The sealing component seals the surrounding rock hole to prevent the grout from leaking out of the surrounding rock hole, thus affecting the grouting effect. The rotating plate 203 drives the first limiting groove 204 to rotate. The first limiting groove 204 squeezes the adjacent first limiting rod 208, causing the circumferentially equidistant extrusion plates 207 to move outward and fit into the surrounding rock hole, so that the feeding pipe 106 is fixed to ensure the stability of the device. At this time, the torsion spring between the rotating plate 203 and the fixed ring 201 is still subjected to the torsion force, so that the extrusion plate 207 fits tightly into the inner wall of the surrounding rock hole.

[0037] Subsequently, the construction workers turned on the water pump 104, which sent the slurry from the storage tank 103 into the delivery pipe 105. The slurry came into contact with the stirring blade 111 and caused it to rotate. The stirring blade 111 stirred the slurry to prevent stratification or sedimentation, which would reduce the grouting effect. The slurry passed through the delivery pipe 105 and entered the feed pipe 106. The slurry entered the drill bit 107 through the feed pipe 106 and flowed into the surrounding rock cavity from the discharge hole of the drill bit 107. As the amount of slurry flowing out of the drill bit 107 gradually increased, the slurry in the feed pipe 106... As the pressure on the material gradually increases, the slurry squeezes the movable rod 209, causing the circumferentially arrayed movable rods 209 to move outward. The spring between the movable rod 209 and the adjacent extrusion plate 207 is compressed, and the conical tip of the movable rod 209 contacts the surrounding rock. As the pressure on the slurry in the feeding pipe 106 continues to increase, the conical tip of the movable rod 209 penetrates into the surrounding rock, further fixing the feeding pipe 106 and making the device more stable. This prevents excessive pressure in the surrounding rock holes, which could cause the feeding pipe 106 to be squeezed out of the surrounding rock holes, thus affecting construction.

[0038] After the surrounding rock grouting is completed, the construction personnel turn off the water pump 104. The grout gradually seeps into the cracks in the surrounding rock, reducing the pressure on the grout and the squeezing force of the grout on the movable rod 209. Under the action of the spring force between the movable rod 209 and the adjacent squeezing plate 207, the movable rod 209 gradually returns to its original position, and the tip of the movable rod 209 protrudes from the surrounding rock. The construction personnel rotate the rotating plate 203 in the opposite direction, increasing the torque of the torsion spring between the rotating plate 203 and the fixed ring 201. The rotating plate 203 drives the first limiting groove 204 to rotate in the opposite direction. The first limiting groove 204 squeezes the adjacent first limiting rod 208, causing the six squeezing plates 207, which are circumferentially equidistant, to return to their original positions. After the six squeezing plates 207 return to their original positions, the construction personnel insert the limiting pin 205 into the adjacent limiting hole 202. The fixed ring 201 limits the rotating plate 203 and the squeezing plates 207 through the limiting pin 205.

[0039] Example 2:

[0040] Based on Example 1, such as Figure 11 and Figure 12As shown, the sealing assembly includes a movable block 301, which is slidably connected to the left end of the feed pipe 106. A mounting ring 3011 is fixedly connected to the feed pipe 106, located to the left of the movable block 301. A spring for resetting the movable block 301 is fixedly connected between the movable block 301 and the mounting ring 3011. An airbag 302 is installed between the movable block 301 and the mounting ring 3011. The left side of the mounting ring 3011 is in contact with the right side of the drill bit 107, causing the airbag to... 302 seals the right side of drill bit 107 to prevent slurry from flowing to the right side of movable block 301, making it difficult to remove drill bit 107 from the surrounding rock cavity. When the slurry does not enter the feed pipe 106, airbag 302 does not contact the inner wall of the surrounding rock. Movable block 301 is provided with a second limiting groove 304, which has a frustum-shaped inclined surface. The left end of extrusion plate 207 is fixed with a second limiting rod 303. The second limiting rod 303 and the frustum-shaped inclined surface of the second limiting groove 304 are connected. The second limiting rod 303 presses against the frustum-shaped inclined surface of the second limiting groove 304, causing the movable block 301 to press against the airbag 302. The airbag 302 protrudes outward and fits against the inner wall of the surrounding rock cavity, sealing the cavity and preventing slurry from flowing out. A third limiting rod 305 is slidably connected to the left end of the feeding pipe 106. The axis of the third limiting rod 305 intersects and is perpendicular to the axis of the feeding pipe 106. The third limiting rod 305 and the feeding pipe 106... A spring is fixedly connected to the movable block 301 for resetting the third limiting rod 305. The movable block 301 is provided with a third limiting groove 306, which is provided with an inclined surface. The inclined surface of the third limiting groove 306 is matched with the third limiting rod 305 for limiting. The third limiting rod 305 presses against the inclined surface of the third limiting groove 306, causing the movable block 301 to further press against the airbag 302. The airbag 302 is further fitted against the inner wall of the surrounding rock cavity and further forms a seal, ensuring that the slurry cannot flow out of the surrounding rock cavity.

[0041] As the circumferentially equidistant extrusion plates 207 move outward, they drive the adjacent second limiting rods 303 to move. The second limiting rods 303 press the second limiting grooves 304, causing the movable block 301 to move to the left. The spring between the mounting ring 3011 and the movable block 301 is compressed, and the movable block 301 compresses the gas in the airbag 302, causing the airbag 302 to fit against the inner wall of the surrounding rock hole. The airbag 302 seals the surrounding rock hole, preventing grout from leaking out of the surrounding rock hole, which would reduce the grouting effect and waste grout.

[0042] When the circumferentially equidistant array of extrusion plates 207 stops moving outward, the movable block 301 stops moving to the left. The inclined surface of the second limiting groove 304 is directly above the third limiting rod 305. The construction personnel begin to pump slurry into the feeding pipe 106 to grout the surrounding rock holes. As the pressure on the slurry in the feeding pipe 106 gradually increases, the slurry squeezes the third limiting rod 305, causing the third limiting rod 305 to extend outward. The third limiting rod 305 squeezes the inclined surface of the third limiting groove 306, causing the movable block 301 to move to the left. The spring between the mounting ring 3011 and the movable block 301 is further compressed. The movable block 301 further squeezes the gas in the airbag 302, causing the airbag 302 to further squeeze and adhere to the inner wall of the surrounding rock hole, further sealing the surrounding rock hole and preventing the slurry from flowing out of the surrounding rock hole, thus reducing the grouting effect.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highly stable surrounding rock grouting device, characterized in that, The system includes a support frame (101), which is rotatably connected to a mounting shell (102). A storage tank (103) is provided on one side of the mounting shell (102). A water pump (104) is installed in the storage tank (103). The water pump (104) is connected to a conveying pipe (105). The conveying pipe (105) passes through the mounting shell (102). A feeding pipe (106) is rotatably connected to the mounting shell (102). The feeding pipe (106) is rotatably connected to the conveying pipe (105). Both ends of the conveying pipe (105) are connected to the feeding pipe (106) and the storage tank (103) respectively. A drill bit (107) is fixedly connected to one end of the feeding pipe (106). The drill bit (107) is provided with a discharge hole. The feeding pipe (106) is connected to the discharge hole of the drill bit (107). The other end of the feeding pipe (106) is fixedly connected to a first gear (108), the mounting shell (102) is equipped with a motor (109), the output shaft of the motor (109) is fixedly connected to a second gear (110) that meshes with the first gear (108), the inside of the conveying pipe (105) is rotatably connected to uniformly distributed stirring blades (111), the stirring blades (111) are spiral, the feeding pipe (106) is provided with a fixing component, the fixing component is used to fix the feeding pipe (106), the feeding pipe (106) is provided with a sealing component for sealing the surrounding rock holes, the water pump (104) pumps the slurry in the storage tank (103) to the conveying pipe (105), the slurry drives the stirring blades (111) to rotate, and the stirring blades (111) stir the slurry; The fixing assembly includes a fixing ring (201), which is fixedly connected to the feeding pipe (106). The fixing ring (201) is provided with circumferentially equidistant limiting holes (202). A rotating plate (203) is rotatably connected to one end of the feeding pipe (106) near the mounting shell (102). The fixing ring (201) is located on the side of the rotating plate (203) near the mounting shell (102). The rotating plate (203) is located outside the surrounding rock hole. A torsion spring is fixedly connected between the fixing ring (201) and the rotating plate (203). The rotating plate (203) is provided with circumferentially equidistant first limiting grooves (204). All are tilted to one side. The rotating plate (203) is slidably connected to the limiting pin (205). The limiting pin (205) is limited to the adjacent limiting hole (202). The feeding pipe (106) is slidably connected to the fixing rods (206) arranged in a circumferentially equidistant array. The fixing rods (206) are equidistantly distributed. The equidistantly distributed fixing rods (206) are fixed to the extrusion plate (207). The end of the extrusion plate (207) near the rotating plate (203) is fixed to the first limiting rod (208). The first limiting rod (208) is slidably connected to the adjacent first limiting groove (204). The axis of the fixing rod (206) intersects and is perpendicular to the axis of the feeding pipe (106). The fixed rod (206) is internally slidably connected to a movable rod (209). The outer ends of the movable rods (209) are all set to be conical. The movable rods (209) pass through the adjacent extrusion plates (207). A spring is fixed between the movable rods (209) and the adjacent extrusion plates (207).

2. The high-stability surrounding rock grouting device according to claim 1, characterized in that, The adjacent stirring blades (111) have opposite spiral directions, which is used to fully stir the slurry.

3. The high-stability surrounding rock grouting device according to claim 1, characterized in that, When no slurry is introduced into the feed pipe (106), the movable rod (209) does not extend beyond the adjacent extrusion plate (207) to prevent the extrusion plate (207) from not being able to contact the rock wall.

4. The high-stability surrounding rock grouting device according to claim 1, characterized in that, The sealing assembly includes a movable block (301), which is slidably connected to the feed pipe (106). The feed pipe (106) is fixedly connected to an installation ring (3011), which is located on the side of the movable block (301) near the drill bit (107). A spring is fixedly connected between the movable block (301) and the installation ring (3011). An airbag (302) is installed between the movable block (301) and the installation ring (3011). When the slurry does not enter the feed pipe (106), the airbag (302) does not contact the inner wall of the surrounding rock. The movable block (301) is provided with a second limiting groove (304). A second limiting rod (303) is fixedly connected to one end of the extrusion plate (207) near the movable block (301).

5. A highly stable surrounding rock grouting device according to claim 4, characterized in that, The mounting ring (3011) fits against the drill bit (107) to prevent the feed tube (106) from being difficult to remove from the drill bit (107).

6. The high-stability surrounding rock grouting device according to claim 5, characterized in that, The feeding tube (106) is slidably connected to a third limiting rod (305). The axis of the third limiting rod (305) intersects and is perpendicular to the axis of the feeding tube (106). A spring is fixed between the third limiting rod (305) and the feeding tube (106). The movable block (301) is provided with a third limiting groove (306).

7. A highly stable surrounding rock grouting device according to claim 6, characterized in that, Both the second limiting groove (304) and the third limiting groove (306) are provided with inclined surfaces. The inclined surface of the second limiting groove (304) is in a limiting engagement with the second limiting rod (303), and the inclined surface of the third limiting groove (306) is in a limiting engagement with the third limiting rod (305).

8. The high-stability surrounding rock grouting device according to claim 7, characterized in that, When the extrusion plate (207) comes into contact with the surrounding rock hole, the third limiting groove (306) is located directly above the third limiting rod (305).

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