An anchoring agent bending inhibition and filling increasing device and operation method for the reamed section of an anchoring hole

Abstract

The present invention relates to an anchoring agent bending suppression and filling augmentation device and operation method for the enlarged section of an anchoring hole. The anchoring agent bending suppression and filling augmentation device for the enlarged section of an anchoring hole includes a bottom enlarged section anchoring agent bending suppression member, a middle enlarged section anchoring agent bending suppression member, a resistance increasing and pressure applying member, and a wedge-shaped fixing member. The operation method is to first sequentially insert the resin anchoring agent equipped with the bottom enlarged section anchoring agent bending suppression member, the middle enlarged section anchoring agent bending suppression member, and the resistance increasing and pressure applying member into a conventional anchoring hole, and then use the anchor cable equipped with the wedge-shaped fixing member to abut against the lower side of the resin anchoring agent and only axially push it to push the resin anchoring agent to the bottom of the anchoring hole. Finally, the drill rig drives the anchor cable to axially push and rotate at the same time, so that the anchor cable penetrates through the resin anchoring agent and stirs and mixes it. The resin anchoring agent after being broken and stirred and mixed by the anchor cable is pressed into and fills the enlarged space under the constraint of the member. The invention has a simple structure and strong adaptability, and can significantly improve the anchoring effect of the anchor cable during hole enlargement.

Description

Technical Field

[0001] The present invention relates to the technical field of anchor hole reaming anchor cable support engineering, and particularly relates to an anchor agent bending inhibition and filling device and an operation method for the reaming section of an anchor hole. Background Art

[0002] With its own advantages, the anchor hole reaming technology has shown good technical potential in the anchor cable support under soft and poor surrounding rock conditions and has been widely applied in engineering. However, due to the significant increase in the spatial size of the reaming section caused by the anchor hole, when constructing according to the conventional anchor cable support construction process, it often occurs that the resin anchor agent that has not been broken and stirred enters the reaming space during the pushing process, resulting in the inability of the anchor agent to reach the bottom of the anchor hole normally. In addition, sometimes although the resin anchor agent can be pushed to the bottom of the hole, under the extrusion effect generated by pushing the anchor cable, the resin anchor agent that has not been broken and stirred bends into the reaming space, which will cause the anchor cable to be unable to break and stir the resin anchor agent in the reaming space, and then cause the resin anchor agent in the reaming space to be unable to cure, losing the bonding effect between the anchor cable and the surrounding rock in the reaming section. This not only fails to exert the advantages of the anchor hole reaming technology but also results in the anchor cable support performance being lower than that without reaming. In addition, sometimes although the reaming space is not occupied by the bent, unbroken and unstirred resin anchor agent, due to the lack of restraint, it is still very difficult for the stirred and mixed resin anchor agent to fill the large reaming space, which will significantly reduce the support performance of the anchor cable under the condition of anchor hole reaming. The above situations all have an important impact on the working effect of the anchor hole reaming technology and seriously restrict the exertion of the anchor cable support performance under the condition of anchor hole reaming. Therefore, aiming at the above problems, there is an urgent need for an anchor agent bending inhibition and filling device and an operation method for the reaming section of an anchor hole to provide a strong guarantee for giving full play to the advantages of the anchor hole reaming technology. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems and provide an anchor agent bending inhibition and filling device and an operation method for the reaming section of an anchor hole with a simple structure, strong adaptability and good engineering effect.

[0004] The technical solution adopted by the present invention is as follows: An anchoring agent bending inhibition and filling augmentation device for the reamed section of an anchoring hole, which includes a bottom reamed section anchoring agent bending inhibition member, a middle reamed section anchoring agent bending inhibition member, a resistance increasing and pressure applying member, and a wedge-shaped fixing member. The bottom reamed section anchoring agent bending inhibition member is installed on the top of a resin anchoring agent that is first pushed into the anchoring hole, is pushed to the bottom of the anchoring hole together with the resin anchoring agent, and finally stays at the position of the bottom reamed section of the anchoring hole. The middle reamed section anchoring agent bending inhibition member is installed at a suitable position on the resin anchoring agent according to the position of the middle reamed section of the anchoring hole. A self-expanding elastic sheet is provided on the middle reamed section anchoring agent bending inhibition member. During the process of the middle reamed section anchoring agent bending inhibition member being pushed in the conventional anchoring hole together with the resin anchoring agent, the self-expanding elastic sheet is always in a contracted state. When passing through the middle reamed section of the anchoring hole, the self-expanding elastic sheet is in an open state and is stuck in the reamed space, so that the middle reamed section anchoring agent bending inhibition member stays at the position of the middle reamed section of the anchoring hole. The resistance increasing and pressure applying member is sleeved outside the resin anchoring agent. The resistance increasing and pressure applying member is connected to the middle reamed section anchoring agent bending inhibition member and is pushed into the anchoring hole together with the middle reamed section anchoring agent bending inhibition member and the resin anchoring agent. The wedge-shaped fixing member is sleeved on the anchor cable. The anchor cable can axially push the resin anchoring agent and the bending inhibition and filling augmentation device to the bottom of the anchoring hole. The anchor cable continues to be pushed axially along the anchoring hole by rotating the drilling rig and passes through the bending inhibition and filling augmentation device. The wedge-shaped fixing member fixed on the anchor cable will partially insert into the resistance increasing and pressure applying member as the anchor cable moves and push the resistance increasing and pressure applying member to move deeper into the anchoring hole. The resin anchoring agent near the reamed section of the anchoring hole is pressed into and fills the reamed space of the anchoring hole after the outer packaging film of the resin anchoring agent is broken and stirred and mixed under the constraint of the members.

[0005] The bottom reamed section anchoring agent bending inhibition member further includes a top hollow sleeve, a top constricted retaining piece, and top sleeve holes. The inner diameter of the top hollow sleeve is larger than the outer diameter of the resin anchoring agent. The upper end of the top hollow sleeve is evenly distributed with top constricted retaining pieces that block the resin anchoring agent from passing through. The barrel of the top hollow sleeve is evenly provided with top sleeve holes.

[0006] The middle reamed section anchoring agent bending inhibition member further includes a middle hollow sleeve and middle sleeve holes. The inner diameter of the middle hollow sleeve is larger than the outer diameter of the resin anchoring agent. The self-expanding elastic sheets are spaced and arranged at the middle sleeve holes located at the upper part of the middle hollow sleeve. A raised outer part of the elastic sheet is provided near the top end of the self-expanding elastic sheet, and a raised inner part of the elastic sheet is provided below the raised outer part of the elastic sheet. When the self-expanding elastic sheet is in a contracted state, only the raised outer part of the elastic sheet contacts the hole wall of the conventional anchoring hole, and at the same time, the raised inner part of the elastic sheet presses tightly on the surface of the resin anchoring agent.

[0007] A chamfer is provided at the top of the middle hollow sleeve.

[0008] The resistance increasing and pressure applying member includes a resistance increasing and pressure applying sleeve, a connecting handle, a wedge-shaped hook, and a wedge-shaped wall surface. A connecting handle is provided at the upper end of the resistance increasing and pressure applying sleeve, and a wedge-shaped hook is provided at the top of the connecting handle. The connecting handle is inserted into the interior of the middle hollow sleeve, and the wedge-shaped hook is stuck in the middle sleeve hole at the lower part of the anchoring agent bending prevention member in the middle hole expanding section. The lower part of the inner wall of the resistance increasing and pressure applying sleeve is a wedge-shaped wall surface that cooperates with the wedge-shaped fixing member.

[0009] The outer surface of the resistance increasing and pressure applying sleeve is provided with a spiral groove for the overflow of the anchoring agent.

[0010] The wedge-shaped fixing member includes a fixing sleeve, a sleeve wedge-shaped surface, and a sleeve bolt. The fixing sleeve is sleeved on the surface of the cable anchor and is fixed by the sleeve bolt. A sleeve wedge-shaped surface facilitating the insertion of the resistance increasing and pressure applying member is provided at the upper part of the fixing sleeve.

[0011] The outer wall of the fixing sleeve is provided with a diversion channel.

[0012] An operation method for preventing the bending and augmenting the filling of the anchoring agent in the hole expanding section of the anchoring hole includes the following steps:

[0013] Step 1): Complete the construction of the bottom and middle hole expanding of the anchoring hole;

[0014] Step 2): Select a resin anchoring agent to be first placed into the anchoring hole, and sleeve the bottom hole expanding section anchoring agent bending prevention member on its top to complete the installation of the bottom hole expanding section anchoring agent bending prevention member;

[0015] Step 3): Select a resistance increasing and pressure applying member, insert its connecting handle into the middle hollow sleeve of the middle hole expanding section anchoring agent bending prevention member, and stick the wedge-shaped hook at the position of the middle sleeve hole at the lower part of the middle hollow sleeve to realize the connection between the resistance increasing and pressure applying member and the middle hole expanding section anchoring agent bending prevention member;

[0016] Step 4): Select the resin anchoring agent for which the middle hole expanding section anchoring agent bending prevention member and the resistance increasing and pressure applying member need to be installed, and sleeve the middle hole expanding section anchoring agent bending prevention member and the resistance increasing and pressure applying member on the outside of the resin anchoring agent;

[0017] Step 5): Select a cable anchor to be used for the anchoring construction, and fix the wedge-shaped fixing member on the cable anchor by using the sleeve bolt to complete the fixing of the wedge-shaped fixing member on the cable anchor;

[0018] Step 6): Sequentially insert the resin anchoring agent installed with the bottom hole expanding section anchoring agent bending prevention member, the middle hole expanding section anchoring agent bending prevention member, and the resistance increasing and pressure applying member into the conventional anchoring hole. Among them, when the middle hole expanding section anchoring agent bending prevention member passes through the orifice of the conventional anchoring hole, manually contract the self-expanding elastic piece;

[0019] Step 7): After the last resin anchoring agent is inserted into the conventional anchoring hole, use the cable bolt installed with the wedge-shaped fixing member to push the anchoring agent bending member in the bottom reamed section, the anchoring agent bending member in the middle reamed section, the resistance increasing and pressure applying member and all the resin anchoring agents together to the deep part of the conventional anchoring hole until the anchoring agent bending member in the bottom reamed section and the top resin anchoring agent are pushed to the bottom of the hole. Among them, when the anchoring agent bending member in the middle reamed section passes through the middle reamed section of the anchoring hole, the self-expanding spring piece gets stuck at this position to make the anchoring agent bending member in the middle reamed section stay at the position of the middle reamed section of the anchoring hole. During this pushing process, the cable bolt only moves along the axial direction of the anchoring hole without rotation;

[0020] Step 8): After the anchoring agent bending member in the bottom reamed section and the top resin anchoring agent are pushed to the bottom of the hole, the drill rig drives the cable bolt to rotate while moving along the axial direction of the anchoring hole, so that the cable bolt passes through each component in turn to stir and mix the resin anchoring agent. Under the constraint of the components, the broken outer packaging film of the cable bolt and the stirred resin anchoring agent are pressed into and fill the reamed space.

[0021] In step 8), the cable bolt passes through each component and the resin anchoring agent, and the top end of the cable bolt is finally pushed to the bottom of the anchoring hole.

[0022] Advantages of the present invention:

[0023] 1. For the anchoring agent bending and increasing filling device in the reamed section of the anchoring hole of the present invention, the anchoring agent bending member in the bottom reamed section and the anchoring agent bending member in the middle reamed section that are pushed into the reamed position of the anchoring hole together with the resin anchoring agent can respectively prevent the unbroken and unstirred resin anchoring agent from bending into the reamed space of the bottom reamed section and the middle reamed section of the anchoring hole, so that the cable bolt can normally break and stir the resin anchoring agent at the reamed position;

[0024] 2. The lower part of the anchoring agent bending member in the middle reamed section of the present invention is connected with a resistance increasing and pressure applying member, which can be axially pushed into the anchoring hole along with the anchoring agent bending member in the middle reamed section. And the resistance increasing and pressure applying member is provided with a connecting handle with a certain length matching the volume of the reamed space. As the cable bolt continuously advances deeper into the anchoring hole during the cable bolt support construction, under the cooperation of the wedge-shaped fixing member and the resistance increasing and pressure applying member, the resistance increasing and pressure applying member will continue to advance deeper into the anchoring hole, and the mixed resin anchoring agent on its upper part will be pressed into and fill the reamed space, ensuring that the resin anchoring agent in the reamed space has a good filling and curing effect. The anchoring agent bending and increasing filling device in the reamed section of the anchoring hole of the present invention has the advantages of reasonable structure, strong adaptability and good engineering effect;

[0025] 3. Method for anchoring agent bending inhibition and cavity filling operation in the reamed section of the anchoring hole of the present invention: First, the resin anchoring agents equipped with the bottom reamed section anchoring agent bending inhibition member, the middle reamed section anchoring agent bending inhibition member and the resistance increasing and pressure applying member are successively inserted into the conventional anchoring hole. Then, the anchor cable equipped with the wedge-shaped fixing member is abutted against the lower side of the last resin anchoring agent and only axially pushed, so that the resin anchoring agent is pushed to the bottom of the anchoring hole. Finally, the drill drives the anchor cable connected with the wedge-shaped fixing member to rotate while axially pushing, so that the anchor cable passes through the resin anchoring agents in each member in turn and stirs and mixes them. After the outer packaging film of the anchor cable is broken and the resin anchoring agents are stirred and mixed, the resin anchoring agents will be pressed into and fill the reamed space under the constraint of the resistance increasing and pressure applying member, so that the resin anchoring agents in the reamed space have good filling and curing effects, thereby improving the bonding effect of the anchoring agent in the reamed section on the anchor cable and the surrounding rock, and bringing into play the advantages of the reamed anchoring technology for the anchoring hole in the anchor cable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of an anchoring agent bending inhibition and cavity filling device in the reamed section of the anchoring hole of the present invention;

[0027] Figure 2 is the structural schematic diagram of the bottom reamed section anchoring agent bending inhibition member of the present invention;

[0028] Figure 3 is the structural schematic diagram of the middle reamed section anchoring agent bending inhibition member in the state where the self-expanding elastic piece is expanded of the present invention;

[0029] Figure 4 is the structural schematic diagram of the middle reamed section anchoring agent bending inhibition member in the state where the self-expanding elastic piece is contracted;

[0030] Figure 5 is the structural schematic diagram of the resistance increasing and pressure applying member of the present invention;

[0031] Figure 6 is the sectional view of the resistance increasing and pressure applying member of the present invention;

[0032] Figure 7 is the structural schematic diagram of the wedge-shaped fixing member of the present invention.

[0033] In the figure: 1. Anchor agent bending suppression member for bottom reamed section; 1-1. Top hollow sleeve; 1-2. Top necked-down retaining piece; 1-3. Top sleeve hole; 2. Anchor agent bending suppression member for middle reamed section; 2-1. Middle hollow sleeve; 2-2. Self-expanding spring piece; 2-3. Middle sleeve hole; 2-4. Outer protrusion of spring piece; 2-5. Inner protrusion of spring piece; 2-6. Chamfer; 3. Resistance increasing and pressure applying member; 3-1. Resistance increasing and pressure applying sleeve; 3-2. Spiral groove for anchor agent overflow; 3-3. Connecting handle; 3-4. Wedge hook; 3-5. Wedge wall surface; 4. Wedge fixing member; 4-1. Fixing sleeve; 4-2. Flow guiding channel; 4-3. Sleeve wedge surface; 4-4. Sleeve bolt; 5-1. Bottom reamed section of anchor hole; 5-2. Middle reamed section of anchor hole; 6. Resin anchor agent; 7. Cable bolt; 8. Conventional anchor hole; 9. Surrounding rock. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention. The following will be specifically described in conjunction with the embodiments.

[0035] As Figure 1-7As shown in the figure, an anchoring agent bending suppression and expansion filling device for the reamed section of an anchoring hole includes a bottom reamed section anchoring agent bending suppression member 1, a middle reamed section anchoring agent bending suppression member 2, a resistance increasing and pressure applying member 3, and a wedge-shaped fixing member 4. The bottom reamed section anchoring agent bending suppression member 1 is installed on the top of a resin anchoring agent 6 that is first pushed into the anchoring hole, and is pushed to the bottom of the anchoring hole together with the resin anchoring agent 6, and finally stays at the position of the bottom reamed section 5-1 of the anchoring hole. The middle reamed section anchoring agent bending suppression member 2 is installed at a suitable position of the resin anchoring agent 6 according to the position of the middle reamed section 5-2 of the anchoring hole. During the process of the middle reamed section anchoring agent bending suppression member 2 being pushed in the conventional anchoring hole 8 together with the resin anchoring agent 6, the self-expanding elastic piece 2-2 is always in a contracted state. When the middle reamed section anchoring agent bending suppression member 2 passes through the middle reamed section 5-2 of the anchoring hole, the self-expanding elastic piece 2-2 expands and gets stuck in the reamed space, thus preventing the middle reamed section anchoring agent bending suppression member 2 from continuing to push towards the bottom of the anchoring hole and staying at the position of the middle reamed section 5-2 of the anchoring hole. The resistance increasing and pressure applying member 3 is sleeved outside the resin anchoring agent 6 and is connected to the middle reamed section anchoring agent bending suppression member 2 by a wedge-shaped hook 3-4, so that the resistance increasing and pressure applying member 3 can be pushed into the anchoring hole together with the middle reamed section anchoring agent bending suppression member 2 and the resin anchoring agent 6. The wedge-shaped fixing member 4 is sleeved on the anchor cable 7 and is fixed on the anchor cable 7 through a sleeve bolt 4-4. The anchor cable 7 sleeved with the wedge-shaped fixing member 4 first only pushes the bending suppression and expansion filling device and the resin anchoring agent 6 along the axial direction of the anchoring hole to the bottom of the anchoring hole, and then continues to push and pass through the bending suppression and expansion filling device by rotating the drill along the axial direction of the anchoring hole. During the pushing process, the wedge-shaped fixing member 4 partially inserts into the resistance increasing and pressure applying member 3, and then pushes the resistance increasing and pressure applying member 3 to move deeper into the anchoring hole. Under the constraint of the wedge-shaped fixing member 4 and the resistance increasing and pressure applying member 3, the resin anchoring agent 6 near the reamed section of the anchoring hole will be pressed into the reamed space of the anchoring hole after breaking the outer packaging film and being stirred and mixed by the anchor cable 7, thereby promoting the resin anchoring agent 6 to fill the reamed space of the anchoring hole.

[0036] The bottom reamed section anchoring agent bending suppression member 1 includes a top hollow sleeve 1-1, a top constricted retaining piece 1-2, and top sleeve holes 1-3. The inner diameter of the top hollow sleeve 1-3 is larger than the outer diameter of the resin anchoring agent 6. N top constricted retaining pieces 1-2 are evenly distributed at its upper end, where N is an integer greater than or equal to 2. The top constricted retaining piece 1-2 can block the resin anchoring agent 6 from passing through the top hollow sleeve 1-1, so that the bottom reamed section anchoring agent bending suppression member 1 can be sleeved on the resin anchoring agent 6. The top sleeve holes 1-3 are evenly arranged on the barrel of the top hollow sleeve 1-1. The top sleeve holes 1-3 occupy most of the space of the top hollow sleeve 1-1, enabling the resin anchoring agent 6 to pass through smoothly and be pressed into the reamed space of the anchoring hole.

[0037] The anchoring agent bending suppression member 2 of the middle reaming section includes a middle hollow sleeve 2-1, a self-expanding spring piece 2-2, a middle sleeve hole 2-3, an outer spring piece protrusion 2-4, and an inner spring piece protrusion 2-5. The inner diameter of the middle hollow sleeve 2-1 is also larger than the outer diameter of the resin anchoring agent 6. The self-expanding spring pieces 2-2 are arranged at intervals at the position of the middle sleeve hole 2-3 at the upper part of the middle hollow sleeve 2-1, and the number thereof is an integer greater than or equal to 2. The outer spring piece protrusion 2-4 is arranged near the top end of the self-expanding spring piece 2-2, and the inner spring piece protrusion 2-5 is arranged at an interval below the outer spring piece protrusion 2-4. When the anchoring agent bending suppression member 2 of the middle reaming section is inserted into the conventional anchoring hole 8, only the position of the outer spring piece protrusion 2-4 of the self-expanding spring piece 2-2 in the contracted state contacts the hole wall of the conventional anchoring hole 8, and the self-expanding spring piece 2-2 presses towards the inside of the middle hollow sleeve 2-1, so that the self-expanding spring piece 2-2 clamps the relatively soft resin anchoring agent 6, thereby realizing the sleeving of the anchoring agent bending suppression member 2 of the middle reaming section on the resin anchoring agent 6. At the same time, the inner spring piece protrusion 2-5 also presses tightly on the surface of the resin anchoring agent 6, so that the anchoring agent bending suppression member 2 of the middle reaming section is sleeved more firmly on the resin anchoring agent 6.

[0038] A chamfer 2-6 is arranged at the top of the middle hollow sleeve 2-2 to prevent the hole wall of the conventional anchoring hole 8 from jamming the anchoring agent bending suppression member 2 of the middle reaming section.

[0039] In addition, the setting situation and function of the middle sleeve hole 2-3 are the same as those of the top sleeve hole 1-3, both of which are to enable the resin anchoring agent 6 to pass through smoothly and be pressed into the reamed space of the anchoring hole.

[0040] The resistance increasing and pressure applying member 3 includes a resistance increasing and pressure applying sleeve 3-1, a connecting handle 3-3, a wedge-shaped hook 3-4, and a wedge-shaped wall surface 3-5. The outer diameter of the resistance increasing and pressure applying sleeve 3-1 is almost the same as the diameter of the conventional anchoring hole 8. A connecting handle 3-3 is arranged at the upper end of the resistance increasing and pressure applying sleeve 3-1. By selecting a resistance increasing and pressure applying member 3 with a connecting handle 3-3 of an appropriate length according to the volume of the resin anchoring agent 6 required above the resistance increasing and pressure applying member 3, the volume of the resin anchoring agent 6 above the resistance increasing and pressure applying member 3 can be made to match the volume of the reamed space. The connecting handle 3-3 is inserted into the inside of the middle hollow sleeve 2-1, and a wedge-shaped hook 3-4 is arranged at the top of the connecting handle 3-3. The wedge-shaped hook 3-4 can be stuck in the middle sleeve hole 2-3 at the lower part of the anchoring agent bending suppression member 2 of the middle reaming section, thereby realizing the connection between the two members. The lower end of the inner wall of the resistance increasing and pressure applying sleeve 3-1 is a wedge-shaped wall surface 3-5, which is convenient for cooperating with the wedge-shaped fixing member 4.

[0041] During the construction of the resistance increasing and pressure applying member 3, its final position is in the conventional anchoring hole 8 slightly below the lower end of the middle reamed section 5-1 of the anchoring hole, and the installation position of the resistance increasing and pressure applying member 3 is determined according to the volume of the resin anchoring agent 6 required to fill the upper space of the final position of the resistance increasing and pressure applying member 3, so as to ensure that the volume of the resin anchoring agent 6 above the installation position of the member is sufficient to fill the space above its final position. By processing the resistance increasing and pressure applying member 3 with connecting handles 3-3 of different lengths, the coordination between the two volumes can be achieved. As the anchor cable 7 continuously advances deeper into the anchoring hole during the anchor cable support construction, under the cooperation of the wedge-shaped fixing member 4 and the resistance increasing and pressure applying member 3, the connecting handle 3-3 sleeved in the middle hollow sleeve 2-1 will continue to advance deeper into the anchoring hole, that is, the wedge-shaped hook 3-4 makes an axial movement in the middle sleeve hole 2-3, so that the resin anchoring agent 6 mixed above the resistance increasing and pressure applying member 3 is pressed into and fills the reamed space, ensuring that the resin anchoring agent 6 in the reamed space has good filling and curing effects. The anchoring agent bending suppression and filling device for the reamed section of the anchoring hole of the present invention has the advantages of reasonable structure, strong adaptability and good engineering effect.

[0042] The outer surface of the resistance increasing and pressure applying sleeve 3-1 is provided with an anchoring agent overflow spiral groove 3-2. The anchoring agent overflow spiral groove 3-2 can not only prevent the resin anchoring agent 6 above from passing through the resistance increasing and pressure applying member 3, but also make a small amount of surplus resin anchoring agent 6 above the member overflow into its lower space, preventing the volume of the resin anchoring agent 6 above the resistance increasing and pressure applying member 3 from exceeding the volume of the reamed space and causing the anchor cable 7 not to be pushed to the bottom of the anchoring hole.

[0043] The wedge-shaped fixing member 4 includes a fixing sleeve 4-1, a sleeve wedge surface 4-3 and a sleeve bolt 4-4. The inner wall of the fixing sleeve 4-1 is slightly larger than the diameter of the anchor cable 7. The upper part of the fixing sleeve 4-1 is provided with a sleeve wedge surface 4-3 for inserting the wedge-shaped fixing member 4 into the resistance increasing and pressure applying member 3. The sleeve bolt 4-4 is used to fix the wedge-shaped fixing member 4 on the surface of the anchor cable 7 and move together with the anchor cable 7.

[0044] A diversion channel 4-2 is arranged outside the fixing sleeve 4-1 to ensure that the resin anchoring agent 6 can flow smoothly during the process of the wedge-shaped fixing member 4 being pushed towards the bottom of the anchoring hole together with the anchor cable 7.

[0045] An operation method for anchoring agent bending suppression and filling in the reamed section of the anchoring hole includes the following steps:

[0046] Step 1): Complete the construction of the bottom and middle reaming of the anchoring hole;

[0047] Step 2): Select a resin anchoring agent 6 that is first placed into the anchoring hole, and sleeve the anchoring agent bending suppression member 1 for the bottom reamed section on its top to complete the installation of the anchoring agent bending suppression member 1 for the bottom reamed section;

[0048] Step 3): Select a resistance-increasing and pressure-applying member 3, insert its connecting handle 3-3 into the middle hollow sleeve 2-1 of the anchoring agent bending prevention member 2 in the middle reaming section, and latch the wedge-shaped hook 3-4 at the position of the middle sleeve hole 2-3 at the lower part of the middle hollow sleeve 2-1 to realize the connection between the anchoring agent bending prevention member 2 in the middle reaming section and the resistance-increasing and pressure-applying member 3;

[0049] Step 4): Select the resin anchoring agent 6 for installing the anchoring agent bending prevention member 2 in the middle reaming section and the resistance-increasing and pressure-applying member 3, and put the anchoring agent bending prevention member 2 in the middle reaming section and the resistance-increasing and pressure-applying member 3 on the outside of the resin anchoring agent 6;

[0050] Step 5): Select a cable bolt 7 for which anchoring construction will be carried out, and fix the wedge-shaped fixing member 4 on the cable bolt 7 by using the sleeve bolt 4-4 to complete the fixing of the wedge-shaped fixing member 4 on the cable bolt 7;

[0051] Step 6): Insert the resin anchoring agent 6 installed with the anchoring agent bending prevention member 1 in the bottom reaming section, the anchoring agent bending prevention member 2 in the middle reaming section and the resistance-increasing and pressure-applying member 3 into the conventional anchoring hole 8 at one time as shown in the figure. Among them, when the anchoring agent bending prevention member 2 in the middle reaming section passes through the hole opening, manually contract its self-expanding elastic piece 2-2 so that the anchoring agent bending prevention member 2 in the middle reaming section can be smoothly inserted into the conventional anchoring hole 8;

[0052] Step 7): After the last resin anchoring agent 6 is inserted into the conventional anchoring hole 8, use the cable bolt 7 installed with the wedge-shaped fixing member 4 to push the anchoring hole reaming section anchoring agent bending prevention and filling device and all the resin anchoring agents 6 together to the deep part of the conventional anchoring hole 8. When the anchoring agent bending prevention member 2 in the middle reaming section passes through the middle reaming section 5-2 of the anchoring hole, the self-expanding elastic piece 2-2 latches at this position so that the anchoring agent bending prevention member 2 in the middle reaming section stays at the position of the middle reaming section 5-2 of the anchoring hole until the anchoring agent bending prevention member 1 in the bottom reaming section and the top resin anchoring agent 6 are pushed to the bottom of the hole. During this pushing process, the cable bolt 7 does not rotate, and the bending prevention and filling device and all the resin anchoring agents 6 are only pushed along the axial direction of the anchoring hole to the bottom of the hole;

[0053] Step 8): After the anchoring agent bending prevention member 1 at the bottom reaming section and the top resin anchoring agent 6 are pushed to the bottom of the hole, the drill rig drives the anchor cable 7 to rotate while pushing the anchor cable 7 to move axially along the anchoring hole, so that the anchor cable 7 passes through each component in turn to stir and mix the resin anchoring agent 6. Under the restraint of the anchoring agent bending prevention member 1 at the bottom reaming section and the anchoring agent bending prevention member 2 at the middle reaming section, the relatively soft resin anchoring agent 6 will not bend into the two reaming spaces of the bottom reaming section 5-1 of the anchoring hole and the middle reaming section 5-2 of the anchoring hole under the extrusion generated by the push of the anchor cable 7. And with the cooperation of the resistance increasing and pressure applying member 3 and the wedge-shaped fixing member 4, the resin anchoring agent 6 after the outer packaging film is broken by the anchor cable 7 and stirred and mixed will be pressed into the reaming space, so that the resin anchoring agent 6 in the reaming space has a good curing effect, thereby improving the bonding effect of the reaming section anchoring agent 6 on the anchor cable 7 and the surrounding rock 9, and bringing the advantages of the anchoring hole reaming and anchoring technology in the anchor cable 7 support into play.

[0054] Among them, in step 8), the anchor cable 7 passes through the bending prevention and filling device and the end of the anchor cable 7 is advanced to the bottom of the anchoring hole, so that the anchor cable 7 stirs and mixes the resin anchoring agent 6 more fully. Specifically, in step 5), the length of the fixed wedge-shaped fixing member 4 from the top of the anchor cable 7 should be slightly less than the distance from the resistance increasing and pressure applying member 3 to the bottom of the anchoring hole at the end of step 7) (that is, when the top resin anchoring agent 6 is pushed to the bottom of the anchoring hole). When step 8) is carried out, when the anchor cable 7 passes through the resin anchoring agent 6 arranged axially in each component in turn and stirs and mixes it, the wedge-shaped fixing member 4 fixed on the anchor cable 7 will continue to push the connecting handle 3-3 of the resistance increasing and pressure applying member 3 to advance deeper into the anchoring hole, that is, a certain volume of anchoring agent is also required in the reaming space, so that the resin anchoring agent 6 is pressed and filled into the two reaming spaces of the bottom reaming section 5-1 of the anchoring hole and the middle reaming section 5-2 of the anchoring hole under the restraint effect.

[0055] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. For example, the resin anchoring agent in the present application can be replaced by other types of anchoring agents or materials that play a bonding or firming role. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the same elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An anchoring agent bending suppression and filling augmentation device for the reamed section of an anchoring hole, characterized in that: It includes an anchoring agent bending suppression member for the bottom reamed section, an anchoring agent bending suppression member for the middle reamed section, a resistance increasing and pressure applying member, and a wedge-shaped fixing member. The anchoring agent bending suppression member for the bottom reamed section is installed on the top of a resin anchoring agent that is first pushed into the anchoring hole, is pushed to the bottom of the anchoring hole together with the resin anchoring agent, and finally stays at the position of the bottom reamed section of the anchoring hole. The anchoring agent bending suppression member for the middle reamed section is installed at a suitable position on the resin anchoring agent according to the position of the middle reamed section of the anchoring hole. A self-expanding spring piece is provided on the anchoring agent bending suppression member for the middle reamed section. During the process of the anchoring agent bending suppression member for the middle reamed section being pushed in the conventional anchoring hole together with the resin anchoring agent, the self-expanding spring piece is always in a contracted state. When passing through the middle reamed section of the anchoring hole, the self-expanding spring piece is in an expanded state and is stuck in the reamed space, so that the anchoring agent bending suppression member for the middle reamed section stays at the position of the middle reamed section of the anchoring hole. The resistance increasing and pressure applying member is sleeved on the outside of the resin anchoring agent. The resistance increasing and pressure applying member is connected to the anchoring agent bending suppression member for the middle reamed section and is pushed into the anchoring hole together with the anchoring agent bending suppression member for the middle reamed section and the resin anchoring agent. The wedge-shaped fixing member is sleeved on the anchor cable. The anchor cable can axially push the resin anchoring agent and the bending suppression and filling device to the bottom of the anchoring hole. The anchor cable continues to be pushed axially along the anchoring hole by rotating the drilling rig and passes through the bending suppression and filling device. The wedge-shaped fixing member fixed on the anchor cable will partially insert into the resistance increasing and pressure applying member and push the resistance increasing and pressure applying member to move deeper into the anchoring hole as the anchor cable moves. The resin anchoring agent near the reamed section of the anchoring hole is pressed into and fills the reamed space of the anchoring hole after breaking the outer packaging film and being stirred and mixed under the constraint of the members; The anchoring agent bending suppression member for the middle reamed section further includes a middle hollow sleeve and middle sleeve holes. The inner diameter of the middle hollow sleeve is larger than the outer diameter of the resin anchoring agent. The self-expanding spring pieces are arranged at intervals at the middle sleeve holes located at the upper part of the middle hollow sleeve. A spring piece outer protrusion is provided near the top end of the self-expanding spring piece, and a spring piece inner protrusion is provided below the spring piece outer protrusion. When the self-expanding spring piece is in a contracted state, only the spring piece outer protrusion contacts the hole wall of the conventional anchoring hole, and at the same time, the spring piece inner protrusion presses tightly on the surface of the resin anchoring agent; The resistance increasing and pressure applying member includes a resistance increasing and pressure applying sleeve, a connecting handle, a wedge-shaped hook, and a wedge-shaped wall surface. A connecting handle is provided at the upper end of the resistance increasing and pressure applying sleeve. A wedge-shaped hook is provided at the top of the connecting handle. The connecting handle is inserted into the inside of the middle hollow sleeve. The wedge-shaped hook is stuck in the middle sleeve hole at the lower part of the anchoring agent bending suppression member for the middle reamed section. The lower part of the inner wall of the resistance increasing and pressure applying sleeve is a wedge-shaped wall surface that cooperates with the wedge-shaped fixing member.

2. The anchoring agent bending inhibition and filling augmentation device for the reamed section of the anchoring hole according to claim 1, characterized in that: The anchoring agent bending suppression member for the bottom reamed section further includes a top hollow sleeve, a top constricted retaining piece, and top sleeve holes. The inner diameter of the top hollow sleeve is larger than the outer diameter of the resin anchoring agent. The top constricted retaining pieces that block the resin anchoring agent from passing through are evenly distributed at the upper end of the top hollow sleeve. The top sleeve holes are evenly arranged on the cylinder body of the top hollow sleeve.

3. An anchoring agent bending suppression and filling augmentation device for the reamed section of an anchoring hole according to claim 1, characterized in that: A chamfer is provided at the top of the middle hollow sleeve.

4. An anchoring agent bending inhibition and filling augmentation device for the reamed section of an anchoring hole according to claim 1, characterized in that: An anchoring agent overflow spiral groove is provided on the outer surface of the resistance increasing and pressure applying sleeve.

5. An anchoring agent bending inhibition and filling augmentation device for the reamed section of an anchoring hole according to claim 1, characterized in that: The wedge-shaped fixing member includes a fixing sleeve, a sleeve wedge surface, and a sleeve bolt. The fixing sleeve is sleeved on the surface of the anchor cable and is fixed by the sleeve bolt. A sleeve wedge surface for facilitating the insertion of the resistance increasing and pressure applying member is provided at the upper part of the fixing sleeve.

6. An anchoring agent bending inhibition and filling augmentation device for the reamed section of an anchoring hole according to claim 5, characterized in that: A diversion channel is provided on the outer wall of the fixing sleeve.

7. An anchoring agent bending suppression and filling operation method for the enlarged section of the anchoring hole, using the anchoring agent bending suppression and filling device for the enlarged section of the anchoring hole according to any one of claims 1-6, characterized in that: It includes the following steps: Step 1): Complete the construction of reaming at the bottom and middle of the anchoring hole. Step 2): Select a resin anchoring agent to be first placed into the anchoring hole, and sleeve the anchoring agent bending restraining member for the bottom reaming section on its top to complete the installation of the anchoring agent bending restraining member for the bottom reaming section. Step 3): Select a resistance increasing and pressure applying member, insert its connecting handle into the middle hollow sleeve of the anchoring agent bending restraining member for the middle reaming section, and hook the wedge on the position of the middle sleeve hole at the lower part of the middle hollow sleeve to realize the connection between the resistance increasing and pressure applying member and the anchoring agent bending restraining member for the middle reaming section. Step 4): Select the resin anchoring agent for installing the anchoring agent bending restraining member for the middle reaming section and the resistance increasing and pressure applying member, and sleeve the anchoring agent bending restraining member for the middle reaming section and the resistance increasing and pressure applying member on the outside of the resin anchoring agent. Step 5): Select an anchor cable to be used for anchoring construction, and fix the wedge-shaped fixing member on the anchor cable by using the sleeve bolt to complete the fixation of the wedge-shaped fixing member on the anchor cable. Step 6): Sequentially insert the resin anchoring agent installed with the anchoring agent bending restraining member for the bottom reaming section, the anchoring agent bending restraining member for the middle reaming section, and the resistance increasing and pressure applying member into the conventional anchoring hole. During this process, when the anchoring agent bending restraining member for the middle reaming section passes through the orifice of the conventional anchoring hole, manually contract the self-expanding elastic piece. Step 7): After the last resin anchoring agent is inserted into the conventional anchoring hole, use the anchor cable installed with the wedge-shaped fixing member to push the anchoring agent bending restraining member for the bottom reaming section, the anchoring agent bending restraining member for the middle reaming section, the resistance increasing and pressure applying member, and all the resin anchoring agents together to the deep part of the conventional anchoring hole until the anchoring agent bending restraining member for the bottom reaming section and the top resin anchoring agent are pushed to the bottom of the hole. During this process, when the anchoring agent bending restraining member for the middle reaming section passes through the middle reaming section of the anchoring hole, the self-expanding elastic piece gets stuck at this position to make the anchoring agent bending restraining member for the middle reaming section stay at the position of the middle reaming section of the anchoring hole. During this pushing process, the anchor cable rotates without rotation and only moves along the axial direction of the anchoring hole. Step 8): After the anchoring agent bending restraining member for the bottom reaming section and the top resin anchoring agent are pushed to the bottom of the hole, the drill rig drives the anchor cable to move along the axial direction of the anchoring hole and at the same time drives the anchor cable to rotate, so that the anchor cable passes through each member in sequence to stir and mix the resin anchoring agent. Under the constraint of the member, the broken outer packaging film of the resin anchoring agent and the stirred resin anchoring agent passing through the anchor cable are pressed into and fill the reamed space.

8. A method for anchoring agent bending inhibition and filling augmentation operation in the reamed section of an anchoring hole according to claim 7, characterized in that: In Step 8), the anchor cable passes through each member and the resin anchoring agent, and the top end of the anchor cable is finally pushed to the bottom of the anchoring hole.

Images