Construction hole plugging device for tunnel reinforcement

Abstract

The utility model discloses a construction hole plugging device for tunnel reinforcement, and belongs to the field of grouting holes. According to the construction method, a slurry conveying channel is formed in a rod body; the at least two blocking pieces are symmetrically arranged at one end of the rod body, are inserted into the construction hole, abut against the inner wall and the outer wall of the construction hole and are used for fixing the rod body in the construction hole; the fixing piece is fixedly arranged at the end, away from the blocking piece, of the rod body and used for sealing one end of the rod body. The connecting ring sleeves the outer wall of the rod body; the first sealing ring is arranged between the fixing piece and the connecting ring; the blocking piece comprises a hook claw hinged to the rod body and a spring arranged between the rod body and the hook claw. When the rod body is inserted into the construction hole opening, the hook claw is in a closed state at the moment; when the hook claw penetrates through the construction hole and enters the soil layer, the spring opens the hook claw to abut against the inner wall and the outer wall of the construction hole. The construction hole plugging device for tunnel reinforcement has the beneficial effect that the construction hole plugging device for tunnel reinforcement is convenient to plug a construction hole.

Description

Technical Field

[0001] This application relates to the field of grouting holes, and more particularly, to a construction hole plugging device for tunnel reinforcement. Background Art

[0002] In the field of tunnel construction, shield tunnels are widely used. They are usually assembled from multiple segment blocks to finally form a tubular tunnel structure. Since tunnels all face the basic problem of deep soft soil layers, it is extremely easy to cause settlement, cracking, water seepage and deformation of tunnel segments; thus, it will cause potential safety hazards in subway operation, and these problems pose a severe test to the development of modern urban rail transit. In response to the above problems, relevant personnel established an in-hole micro-disturbance reinforcement research group in 2019 to carry out research and development on in-hole micro-disturbance high-pressure jet grouting reinforcement equipment and technology, successfully developed the first set of TJS reinforcement complete equipment, and proposed a new TJS technology for in-hole shield reinforcement, which is suitable for large-diameter and large-depth micro-disturbance pile formation reinforcement in a narrow space inside the tunnel, effectively alleviating the natural settlement of the foundation. The specific construction method of the TJS new technology can refer to the construction methods disclosed in Chinese patent documents CN202210093042.9 or CN202010301375.7.

[0003] At present, although the existing grouting holes and lifting holes on the shield segments can be utilized. However, due to the need for angle control of the reinforcement part, the existing lifting holes and grouting holes on the segments cannot be utilized. Therefore, some new construction holes need to be opened on the segments to meet the needs of construction reinforcement. However, since the newly opened construction holes do not have nut threads, and the existing grouting hole plugging devices can only be used for plugging grouting holes and lifting holes with nut threads, the newly opened construction holes cannot be plugged according to the conventional plugging devices. Therefore, more effective measures need to be taken to effectively plug the newly opened construction holes to meet the plugging requirements of the newly opened holes in TJS construction of shield tunnels. Summary of the Utility Model

[0004] The content part of this application is used to briefly introduce the concepts, which will be described in detail in the following detailed implementation part. The content part of this application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] To solve the technical problems mentioned in the above background art part, some embodiments of this application provide a construction hole plugging device for tunnel reinforcement, which is applied to plug the newly opened construction holes on the shield segments, and includes:

[0006] A rod body with a slurry conveying channel inside;

[0007] The blocking members, at least two in number, are symmetrically arranged at one end of the rod body, and the blocking members are inserted into the construction hole and abut against the inner and outer walls of the construction hole for fixing the rod body in the construction hole;

[0008] The fixing member is fixedly arranged at the end of the rod body far from the blocking member for sealing one end of the rod body;

[0009] The connecting ring is sleeved on the outer wall of the rod body;

[0010] The first sealing ring is arranged between the fixing member and the connecting ring;

[0011] The blocking member includes a claw hinged to the rod body and a spring arranged between the rod body and the claw;

[0012] When the rod body is inserted into the construction hole opening, the claw is in a closed state at this time; when the claw passes through the construction hole and enters the soil layer, the spring opens the claw to abut against the inner and outer walls of the construction hole.

[0013] After the slurry has finally set, insert the plugging device into the construction hole. During the insertion process, the claw is in a closed state; when the claw passes through the construction hole and enters the soil layer, the spring opens the claw to abut against the inner and outer walls of the construction hole; at this time, the rod body cannot be pulled out from the construction hole, and then fix and tighten the fixing member to the rod body to fix the other end of the rod body. After the installation is completed, convey the curing agent slurry into the rod body until the entire construction hole is filled and then stop grouting. After properly treating the remaining slurry, clean up the sundries in the tunnel and remove the grouting equipment. Therefore, the present application achieves the plugging effect of the construction hole without having to disassemble the hole plugging device, reducing the unnecessary trouble generated during disassembly, and thus avoiding the skew generated during traditional disassembly. While ensuring the accuracy and reliability of the construction hole plugging, it simplifies the process of plugging the construction hole, shortens the operation cycle of plugging the construction hole, saves the operation cost of plugging the construction hole and the maintenance cost.

[0014] Further, the claw and the rod body are connected through a hinge seat, and the hinge seat includes a connecting piece fixedly arranged on the rod body and a pin shaft rotatably arranged on the connecting piece; one end of the claw is sleeved on the pin shaft and fixedly connected to the pin shaft.

[0015] Further, a plurality of liquid outlets are provided on the rod body.

[0016] Further, the rod body is a through pipe at both ends.

[0017] Further, an external thread is provided at one end of the rod body; the fixing member includes a nut threadedly connected to the rod body and a nut installed at the port of one end of the rod body.

[0018] Further, the construction hole plugging device for tunnel reinforcement further includes:

[0019] The second sealing ring is arranged between the connecting ring and the shield segment.

[0020] Furthermore, the construction hole plugging device for tunnel reinforcement further includes:

[0021] The third sealing ring is arranged between the connecting ring and the shield segment, and the third sealing ring is located on the outer wall of the construction hole.

[0022] Furthermore, the diameter of the third sealing ring is smaller than that of the second sealing ring.

[0023] The beneficial effect of the present application is: to provide a construction hole plugging device for tunnel reinforcement that facilitates plugging of the construction hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings forming a part of the present application are used to provide a further understanding of the present application, making other features, objectives, and advantages of the present application more obvious. The schematic embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application.

[0025] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the elements and components are not necessarily drawn to scale.

[0026] In the drawings:

[0027] Figure 1 is the overall schematic diagram according to the embodiment of the present application;

[0028] Figure 2 is Figure 1 the enlarged view of part A of

[0029] Figure 3 is the sectional view of the embodiment;

[0030] Figure 4 is Figure 3 the enlarged view of part B of

[0031] Reference numerals:

[0032] 1, rod body; 2, blocking member; 3, fixing member; 4, connecting ring; 5, first sealing ring; 6, slurry conveying channel; 7, hook claw; 8, spring; 9, connecting piece; 10, pin shaft; 11, liquid outlet; 12, external thread; 13, nut; 14, cap nut; 15, second sealing ring; 16, third sealing ring; 17, shield segment; 18, construction hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0034] In addition, it should be noted that for ease of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0035] It should be noted that concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0036] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0037] The present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.

[0038] Referring to Figures 1-4 , a construction hole plugging device for tunnel reinforcement, which is applied to plug a newly opened construction hole 18 on a shield segment 17, includes a rod body 1, a blocking member 2, a fixing member 3, a connecting ring 4, and a first sealing ring 5; a slurry conveying channel 6 is provided inside the rod body 1, and the rod body 1 is a pipe body with both ends penetrating. There are at least two blocking members 2 and they are symmetrically arranged at one end of the rod body 1, and the blocking member 2 is inserted into the construction hole 18 and abuts against the inner and outer walls of the construction hole 18 for fixing the rod body 1 in the construction hole 18. The fixing member 3 is fixedly arranged at the end of the rod body 1 away from the blocking member 2 for sealing one end of the rod body 1. The connecting ring 4 is sleeved on the outer wall of the rod body 1, and the first sealing ring 5 is arranged between the fixing member 3 and the connecting ring 4. Among them, the side of the construction hole 18 close to the tunnel is the outer end wall, and the side close to the inner soil layer is the inner end wall. The blocking member 2 includes a hook claw 7 hinged to the rod body 1 and a spring 8 arranged between the rod body 1 and the hook claw 7; when the rod body 1 is inserted into the mouth of the construction hole 18, the hook claw 7 is in a closed state at this time; when the hook claw 7 passes through the construction hole 18 and enters the soil layer, the spring 8 opens the hook claw 7 to abut against the inner and outer walls of the construction hole 18.

[0039] The hook claw 7 is connected to the rod body 1 through a hinge seat, and the hinge seat includes a connecting piece 9 fixedly arranged on the rod body 1 and a pin shaft 10 rotatably arranged on the connecting piece 9; one end of the hook claw 7 is sleeved on the pin shaft 10 and fixedly connected to the pin shaft 10.

[0040] A plurality of liquid outlets 11 are provided on the rod body 1.

[0041] One end of the rod body 1 is provided with an external thread 12; the fixing member 3 includes a nut 13 threadedly connected to the rod body 1 and a nut 14 installed on the end port of the rod body 1.

[0042] The construction hole plugging device for tunnel reinforcement further includes a second sealing ring 15 and a third sealing ring 16; the second sealing ring 15 is arranged between the connecting ring 4 and the shield segment 17, and the third sealing ring 16 is arranged between the connecting ring 4 and the shield segment 17, and the third sealing ring 16 is located on the outer wall of the construction hole 18. Among them, the diameter of the third sealing ring 16 is smaller than the diameter of the second sealing ring 15.

[0043] The specific operation process is as follows:

[0044] After the slurry has finally set, insert the plugging device into the construction hole 18. During the insertion process, the hook claws 7 are in a closed state; when the hook claws 7 pass through the construction hole 18 and enter the soil layer, the spring 8 opens the hook claws 7, which abut against the inner and outer walls of the construction hole 18; at this time, the rod body 1 cannot be pulled out from the construction hole 18. Then, threadedly connect and fix the nut 13 to the rod body 1, and the nut 13 is hermetically connected to the connecting ring 4 through the first sealing ring 5. The connecting ring 4 is hermetically connected to the shield segment 17 through the second sealing ring 15 and the third sealing ring 16, so that the outer wall of the other end of the rod body 1 is hermetically fitted with the shield segment 17 and the construction hole 18. After the installation is completed, convey the curing agent slurry into the rod body 1 until the entire construction hole 18 is filled, then stop grouting. Fasten the nut 14 to the end port of the rod body 1. After properly treating the remaining slurry, clean up the sundries in the tunnel and remove the grouting equipment. Therefore, this application can achieve the plugging effect of the construction hole 18 without disassembling the plugging device, reducing the unnecessary trouble generated during disassembly, and will not have the skew generated during traditional disassembly. While ensuring the accuracy and reliability of the plugging of the construction hole 18, it simplifies the process of plugging the construction hole 18, shortens the operation cycle of plugging the construction hole 18, and saves the plugging operation cost and maintenance cost of the construction hole 18.

[0045] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A construction hole plugging device for tunnel reinforcement, used to plug a newly opened construction hole on a shield segment, characterized in that: include: A rod body having a slurry conveying channel inside; At least two stoppers are symmetrically arranged on one end of the rod body, and the stoppers are inserted into the construction hole and abut against the inner and outer walls of the construction hole, so as to fix the rod body in the construction hole; A fixing member, fixedly arranged on one end of the rod body away from the blocking member, and used for sealing one end of the rod body; A connecting ring, sleeved on the outer wall of the rod; A first sealing ring, disposed between the fixing member and the connecting ring; The blocking member comprises a hook hingedly connected to the rod body, and a spring arranged between the rod body and the hook; When the rod body is inserted into the construction hole, the hook claw is in a tightly closed state; when the hook claw passes through the construction hole and enters the soil layer, the spring opens the hook claw to abut against the inner and outer walls of the construction hole.

2. The construction hole plugging device for tunnel reinforcement according to claim 1, characterized in that: The hook claw is connected to the rod body via a hinge seat, which includes a connecting piece fixedly arranged on the rod body and a pin rotatably arranged on the connecting piece; one end of the hook claw is sleeved on the pin and fixedly connected to the pin.

3. The construction hole plugging device for tunnel reinforcement according to claim 1, characterized in that: The rod body is provided with a plurality of liquid outlets.

4. The construction hole plugging device for tunnel reinforcement according to claim 1, characterized in that: The rod body is a tube body with two ends penetrating through.

5. The construction hole plugging device for tunnel reinforcement according to claim 1, characterized in that: An external thread is provided on one end of the rod body; The fixing member comprises a nut threadedly connected to the rod body and a nut mounted on a port at one end of the rod body.

6. The construction hole plugging device for tunnel reinforcement according to claim 1, characterized in that: The construction hole plugging device for tunnel reinforcement also includes: The second sealing ring is arranged between the connecting ring and the shield segment.

7. The construction hole plugging device for tunnel reinforcement according to claim 6, characterized in that: The construction hole plugging device for tunnel reinforcement also includes: The third sealing ring is arranged between the connecting ring and the shield segment, and the third sealing ring is located on the outer wall of the construction hole.

8. The construction hole plugging device for tunnel reinforcement according to claim 7, characterized in that: A diameter of the third sealing ring is smaller than a diameter of the second sealing ring.

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