Resin anchoring agent feeding device for chambering and anchoring

Abstract

The utility model discloses a resin anchoring agent feeding device for chambering and anchoring. The feeding device comprises a guide cap, a hollow constraint component and a crushing and stirring component, a plurality of conical needles are arranged at the front end of the guide cap, and a sleeve with first internal threads is arranged at the tail end of the guide cap; the hollowed-out restraining component is of a hollow long pipe structure, a resin anchoring agent is installed in a pipe body, a hollowed-out groove is formed in the outer ring of the middle of the pipe body, a first external thread is arranged at the front end of the pipe body, and a second internal thread is arranged at the tail end of the pipe body. The crushing and stirring component is of a hollow sleeve structure, a second external thread is arranged on the outer ring of a barrel, and a conical spiral blade is arranged at the front end of the barrel; the crushing and stirring component is fixed to the front end of the anchor cable and enters the rod body of the hollow restraining component through rotation of the anchor cable, and pushing and stirring of the resin anchoring agent are achieved. While the stirring and anchoring effects of the anchoring agent in the chambering area of the anchoring hole are guaranteed, the chambering and anchoring construction efficiency of the anchor cable (rod) is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel and underground engineering technical field, concretely relates to a resin anchoring agent feeding device for reaming anchoring. BACKGROUND

[0002] The reaming anchoring technology has been applied in the anchor cable (rod) support in the coal mine tunnel and rock and soil slope field, aiming at increasing the bonding area of the anchoring agent and the surrounding rock to solve the problems such as insufficient anchoring force and anchoring force decay of the anchor cable (rod) in the soft rock (soil) stratum. Compared with the conventional anchoring, the reaming anchoring usually has an anchoring hole that is partially enlarged, i.e. the reaming zone. During the installation process of the resin anchoring agent cartridge, when the resin anchoring agent cartridge is pushed through the reaming zone, the resin anchoring agent cartridge is prone to bending towards the reaming zone due to its poor bending resistance, and in the absence of the constraint of the anchoring hole wall, the resin anchoring agent cartridge is difficult to be fully broken and mixed in the reaming zone, thereby affecting the mixing effect of the resin anchoring agent and making it difficult for the resin anchoring agent to fully solidify and fill in the reaming zone, which seriously affects the reaming anchoring effect of the anchor cable (rod).

[0003] In the existing resin anchoring agent installation construction technology, the anchoring agent feeding sleeve disclosed in the publication CN 217976265 U is constructed by a reference element, a conical head and an anchor cable connecting sleeve, and has a simple structure. The reference element can be lengthened, and has high practicability for conventional anchoring holes. However, for reaming anchoring, the reference element is composed of a steel wire bundle, and the overall rigidity is poor. During the process of pushing and mixing the resin anchoring agent in the drilling hole, the steel wire bundle in the reaming zone is prone to swelling and bending and the gap increases, so that the resin anchoring agent enters the reaming zone before being fully mixed, thereby greatly affecting the reaming anchoring effect. Secondly, the manufacturing process of the expansion sleeve in the device is complex, and the anchor cable needs to break through the expansion sleeve to advance during the construction process, which increases the construction difficulty. Therefore, it is necessary to develop an anchoring agent feeding device and a feeding method for reaming anchoring to solve the problems such as bending and insufficient mixing of the resin anchoring agent in the reaming zone during the pushing and mixing process of the resin anchoring agent, and to achieve the purposes of simplifying the resin anchoring agent installation process, improving the construction efficiency and optimizing the reaming anchoring effect. SUMMARY

[0004] In view of the above technical problems, the utility model provides a resin anchoring agent feeding device for reaming anchoring to solve the problems such as bending and insufficient mixing of the resin anchoring agent in the reaming zone during the pushing and mixing process of the resin anchoring agent, and to achieve the purposes of simplifying the resin anchoring agent installation process, improving the construction efficiency and optimizing the reaming anchoring effect.

[0005] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0006] A resin anchoring agent feeding device for reaming anchoring, comprising a guide cap, a hollow constraint member and a crushing stirring member;

[0007] The front end of the guide cap is provided with a plurality of conical needles, and the tail end is a sleeve with a first internal thread;

[0008] The hollow constraint member is a hollow long tube structure, a resin anchoring agent is installed in the tube body, a hollow groove is opened in the outer circle of the middle part of the tube body, a first external thread matched with the first internal thread is arranged at the front end of the tube body, and a second internal thread is arranged at the tail end;

[0009] The crushing stirring member is a hollow sleeve structure, the outer circle of the cylinder body is provided with a second external thread matched with the second internal thread, and the front end of the cylinder body is provided with a conical spiral blade;

[0010] The crushing stirring member is fixed at the front end of the anchor cable, enters the rod body inside the hollow constraint member through the rotation of the anchor cable, and realizes the pushing and stirring of the resin anchoring agent.

[0011] In the resin anchoring agent feeding device for reaming anchoring, the front end of the guide cap is three conical needles arranged on the bottom surface of the sleeve.

[0012] In the resin anchoring agent feeding device for reaming anchoring, each hollow constraint member comprises three groups of hollow grooves, and each group of hollow grooves is composed of three straight grooves symmetrically distributed along the circumference.

[0013] In the resin anchoring agent feeding device for reaming anchoring, the distance between the two adjacent groups of hollow grooves is 85mm.

[0014] In the resin anchoring agent feeding device for reaming anchoring, the front end of the crushing stirring member is provided with four groups of conical spiral blades.

[0015] In the resin anchoring agent feeding device for reaming anchoring, the conical spiral blade is a right spiral tooth structure.

[0016] In the resin anchoring agent feeding device for reaming anchoring, the crushing stirring member is fixed at the front end of the anchor cable through gluing or clamping.

[0017] The beneficial technical effects of the utility model are as follows:

[0018] The resin anchoring agent feeding device is composed of a guide cap, a hollow constraint component and a crushing and stirring component, compared with the prior device, the connecting mode between the components of the resin anchoring agent feeding device adopts threaded connection, and the assembly process of the device is simplified.In addition, the anchoring agent feeding device is made of a hollow stainless steel pipe, which can ensure that the structure is not damaged by the high-speed rotating anchor cable (rod) and that the anchoring agent can smoothly spread into the hole expansion area of the anchoring hole.In addition, the resin anchoring agent feeding device is provided with a conical needle at the front end of the guide cap, and the conical needle is inserted into the rock mass at the bottom of the hole after the resin anchoring agent feeding device is pushed, so that the resin anchoring agent feeding device can be prevented from rotating with the anchor cable (rod) and damaging the hole wall, thereby affecting the anchoring effect.The crushing and stirring component is also provided with toothed spiral blades, which can better crush the anchoring agent packaging bag during rotation, and ensure the stirring effect of the anchoring agent.The structure design of the resin anchoring agent feeding device solves the problems of efficient pushing and sufficient stirring of the resin anchoring agent in the hole expansion area, and provides technical support for realizing the ideal anchor cable (rod) hole expansion and anchoring effect.

[0019] The resin anchoring agent feeding device is composed of a guide cap, a hollow constraint component and a crushing and stirring component, compared with the prior device, the connecting mode between the components of the resin anchoring agent feeding device adopts threaded connection, and the assembly process of the device is simplified.In addition, the anchoring agent feeding device is made of a hollow stainless steel pipe, which can ensure that the structure is not damaged by the high-speed rotating anchor cable (rod) and that the anchoring agent can smoothly spread into the hole expansion area of the anchoring hole.In addition, the resin anchoring agent feeding device is provided with a conical needle at the front end of the guide cap, and the conical needle is inserted into the rock mass at the bottom of the hole after the resin anchoring agent feeding device is pushed, so that the resin anchoring agent feeding device can be prevented from rotating with the anchor cable (rod) and damaging the hole wall, thereby affecting the anchoring effect.The crushing and stirring component is also provided with toothed spiral blades, which can better crush the anchoring agent packaging bag during rotation, and ensure the stirring effect of the anchoring agent.The structure design of the resin anchoring agent feeding device solves the problems of efficient pushing and sufficient stirring of the resin anchoring agent in the hole expansion area, and provides technical support for realizing the ideal anchor cable (rod) hole expansion and anchoring effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The utility model discloses an example of the hole expansion anchor cable in surrounding rock is shown in the figure;

[0021] Figure 2 The utility model discloses an example of the guide cap is shown in the figure;

[0022] Figure 3 The utility model discloses an example of the hollow constraint component is shown in the figure;

[0023] Figure 4 The utility model discloses an example of the guide cap is installed in the hollow constraint device and is shown in the figure;

[0024] Figure 5 The utility model discloses an example of the crushing and stirring component is shown in the figure;

[0025] Figure 6 The utility model discloses an example of the crushing and stirring component is installed in the anchor cable end and is shown in the figure;

[0026] Figure 7 The figure shows that the resin anchoring agent is filled into the embodiment of the utility model;

[0027] Figure 8 The figure shows that the resin anchoring agent feeding device is pushed to the hole bottom by the anchor cable in the embodiment of the utility model;

[0028] Figure 9 The figure shows that the resin anchoring agent is stirred in the embodiment of the utility model.

[0029] Reference signs: 1-surrounding rock; 2-reaming anchoring hole; 3-guide cap; 3-1-conical needle; 3-2-first internal thread; 3-3-sleeve; 4-hollow constraint member; 4-1-first external thread; 4-2-hollow groove; 4-3-second internal thread; 5-crushing and stirring member; 5-1-conical spiral blade; 5-2-second external thread; 6-anchor cable; 7-resin anchoring agent. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the utility model is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0031] On the contrary, the utility model covers any substitution, modification, equivalent method and scheme made on the essence and scope of the utility model defined by the claims. Further, in order to make the public have a better understanding of the utility model, some specific details are described in detail in the following detailed description of the utility model. The utility model can also be completely understood without the description of these details for those skilled in the art.

[0032] In combination with Figures 1 to 9 , the specific technical scheme of the utility model is introduced:

[0033] Figure 1 The structure of the reaming anchoring hole 2 arranged in the surrounding rock is that the reaming anchoring hole 2 is arranged at intervals in the straight hole part.

[0034] The resin anchoring agent feeding device for reaming anchoring of the utility model comprises a guide cap 3, a hollow constraint member 4 and a crushing and stirring member 5.

[0035] As Figure 2As shown, the guide cap 3 is composed of two parts, three conical needles 3-1 and a sleeve 3-3. The bottom of the sleeve is provided with three conical needles 3-1. The conical needles are 25 mm long, the bottom circle outer diameter is 6 mm, and the material is stainless steel. The conical needles 3-1 are designed to prevent the anchoring agent feeding device from following the anchor cable rotation when the guide cap is inserted into the rock mass 1. The sleeve is provided with a first internal thread 3-2, which matches the first external thread 4-1 on the hollow restraint member. The sleeve is 35 mm long, the outer diameter is 30 mm, and the wall thickness is 1 mm.

[0036] As shown in Figure 3 and Figure 4 The hollow restraint member 4 is made of a 1.5 mm thick stainless steel pipe, 1300 mm long, and 28 mm in outer diameter. The front end is provided with a 20 mm long first external thread 4-1, which is connected with the guide cap 3 to form the anchoring agent feeding device. The inner surface of the tail end of the hollow restraint member 4 is provided with a 20 mm second internal thread 4-3, which is connected with the second external thread 5-2 on the outer wall of the crushing and stirring member. After the thread connection, the anchoring agent feeding device is pushed into the drill hole by the anchor cable 6 connected by the crushing and stirring member. When a fault occurs during the pushing process, the anchoring agent feeding device can also be pulled out of the drill hole through the thread connection.

[0037] The middle part of the hollow restraint member 4 is a hollow groove 4-2, which is 300 mm long and 15 mm wide. There are three evenly distributed around the circumference, and three groups of hollow grooves are distributed longitudinally with a spacing of 85 mm. The structure design can not only ensure the structural strength not to be damaged by the rotating anchor cable, but also ensure the smooth flow of the anchoring agent.

[0038] As shown in Figure 5 The crushing and stirring member 5 is a hollow sleeve structure, which is composed of a conical spiral blade 5-1 and a sleeve. The conical part is 15 mm long and the maximum outer diameter is 21 mm. The conical body is welded with a height of 2 mm spiral blade 5-1, which is right helical tooth shape and is distributed along the circumference of 4 pieces, which aims to better crush the anchoring agent packaging bag and match the rotation direction of the drilling machine. The sleeve is made of stainless steel with a length of 40 mm, an outer diameter of 25 mm, and a thickness of 1.5 mm. The outer wall is provided with a second external thread 5-2, which can be connected with the second internal thread 4-3 in the hollow restraint member to push the anchoring agent feeding device. The sleeve is inserted into the anchor cable 6 and the two are bonded firmly with epoxy resin glue. A clamping sleeve or other components can also be designed instead of gluing. When the clamping sleeve structure is adopted, one end of the clamping sleeve is fixed to the outer surface of the anchor cable, and the other end is installed in the sleeve, so that the crushing and stirring member 5 is pressed to the front end of the anchor cable.

[0039] When the anchoring agent feeding device is pushed into place, the crushing and stirring member 5 is separated from the two threads by continuing to rotate the anchor cable 6, and then the crushing and stirring member 5 enters the hollow restraint member 4.

[0040] The utility model provides a resin anchoring agent feeding method for hole expanding anchoring, comprising the following steps:

[0041] 【1】Adopt hand electric drill to drive conventional drill bit to carry out drilling in tunnel model surrounding rock 1 to design depth, then adopt hole expander to carry out hole expansion to conventional anchoring hole, form hole expanding anchoring hole 2, hole expanding anchoring hole 2 conventional section diameter is 32mm, hole expanding section length 120mm, maximum diameter 60mm;

[0042] 【2】Install anchoring agent feeding device, connect the guide cap 3 through the first internal thread 3-2 and the first external thread 4-1 at one end of the hollow constraint component 4;

[0043] 【3】As Figure 6 Shown, install broken stirring component 5, insert anchor cable 6 into the sleeve of broken stirring component 5, and use epoxy resin adhesive joint or clamping pressure joint to fix two;

[0044] 【4】As Figure 7 Shown, two K2360 resin anchoring agents 7 are loaded in the hollow constraint component 4, then push the one end of the guide cap 3 into the hole expanding anchoring hole 2;

[0045] 【5】Connect the second external thread 5-2 on the surface of broken stirring component with the second internal thread 4-3 in the hollow constraint component, push the whole component to the conical needle 3-1 on the guide cap through anchor cable 6 and insert into the bottom rock mass, wherein the anchor cable 6 is 2m long and 21.8mm in diameter;

[0046] 【6】As Figure 8 Shown, manually rotate anchor cable 6 to make the second external thread 5-2 on the surface of broken stirring component 5 and the second internal thread 4-3 in the hollow constraint component disengage, and the broken stirring component enters the inside of the pipe body of the hollow constraint component;

[0047] 【7】Connect the drilling machine to drive anchor cable 6 to stir resin anchoring agent 7, and the mixed anchoring agent flows out from the straight slot 4-2 of the hollow constraint component 4 into the hole expanding anchoring hole 2 to solidify, finally achieves Figure 9 The result.

[0048] The utility model discloses a resin anchoring agent feeding device for hole expansion anchoring, which is characterized by the following technical scheme: a conical needle is arranged at the front end of the guiding cap of the resin anchoring agent feeding device; after the resin anchoring agent feeding device is pushed, the conical needle is inserted into the rock mass at the bottom of the hole, so that the resin anchoring agent feeding device is prevented from rotating with the anchor cable (rod) and damaging the hole wall, thereby affecting the anchoring effect. The broken and stirred member is also provided with toothed spiral blades, which can better break the anchoring agent packaging bag during rotation, ensure the anchoring agent stirring effect, and solve the problems of efficient pushing and sufficient stirring of the resin anchoring agent in the hole expansion area. The method can realize the integration of resin anchoring agent feeding and stirring in the hole expansion anchoring mode of the anchor cable (rod) and avoid the "glove effect" in the resin anchoring agent stirring process, thereby affecting the anchoring effect. The "glove effect" refers to the phenomenon that the anchor cable (rod) cannot completely break the packaging bag of the resin anchoring agent during the stirring process, and the large pieces of resin anchoring agent packaging bag that are not completely broken will wrap the curing agent, so that the curing agent cannot react with the accelerator, thereby affecting the anchoring effect.

[0049] In summary, the utility model provides a resin anchoring agent feeding device and feeding method for hole expansion anchoring, which can guarantee the anchoring effect of the anchoring agent in the hole expansion area and improve the hole expansion anchoring construction efficiency of the anchor cable (rod).

[0050] The above content only illustrates the technical idea of the utility model, and cannot limit the protection scope of the utility model. Any modification made on the basis of the technical scheme according to the technical idea of the utility model falls within the protection scope of the utility model claim.

Claims

1. A resin anchor feed device for underreaming anchoring, characterized by: The device comprises a guide cap, a hollow constraint member and a crushing stirring member; The front end of the guide cap is provided with a plurality of conical needles, and the tail end is a sleeve with a first internal thread; The hollow constraint member is a hollow long tube structure, a resin anchoring agent is installed inside the tube body, a hollow groove is opened on the outer ring of the middle part of the tube body, the front end of the tube body is provided with a first external thread matched with the first internal thread, and the tail end is provided with a second internal thread; The crushing stirring member is a hollow sleeve structure, the outer ring of the cylinder body is provided with a second external thread matched with the second internal thread, and the front end of the cylinder body is provided with a conical spiral blade; The crushing stirring member is fixed at the front end of the anchor cable, enters the inside of the rod body of the hollow constraint member through the rotation of the anchor cable, and realizes the pushing and stirring of the resin anchoring agent.

2. A resin anchor feed device for underreaming anchoring according to claim 1, characterized in that: The front end of the guide cap is three conical needles, which are arranged on the bottom surface of the sleeve.

3. The resin anchor feed device for underreaming anchoring of claim 1, wherein: Each hollow constraint member contains three groups of hollow grooves, and each group of hollow grooves is composed of three straight grooves symmetrically distributed along the circumference.

4. The resin anchor feed device for underreaming anchoring according to claim 3, characterized in that: The distance between the two adjacent groups of hollow grooves is 85mm.

5. The resin anchor feed device for underreaming anchoring of claim 1, wherein: The front end of the crushing stirring member is provided with four groups of conical spiral blades.

6. A resin anchor feed device for underreaming anchoring according to claim 5, characterized in that: The conical spiral blade is a right helical tooth structure.

7. The resin anchor feed device for underreaming anchoring of claim 1, wherein: The crushing stirring member is fixed at the front end of the anchor cable by gluing or clamping.

Images