Positioning tool for laying geotextile on tunnel circumferential blind pipe

Abstract

The utility model discloses a tunnel circumferential blind pipe laying geotextile positioning tool which comprises a flattening assembly and a positioning assembly, the flattening assembly comprises a pipe clamping frame and flattening frames, the bottom of the pipe clamping frame is open, a pipe clamping cavity is formed in the pipe clamping frame, the flattening frames are arranged on the outer sides of the lower portions of the two sides of the pipe clamping frame, and lattice holes are formed in the flattening frames; the pipe clamping assembly comprises clamping pieces, a pipe clamping belt and a driving mechanism, the clamping pieces are arranged on the two sides of the lower portion of the pipe clamping cavity respectively, the two ends of the pipe clamping belt are connected with the clamping pieces on the left side and the right side respectively, and the driving mechanism is connected with the clamping pieces and drives the clamping pieces to move close to or away from each other; by means of the flattening assembly and the pipe clamping assembly, the tunnel lining waterproof layer can tightly wrap the drainage blind pipe, accurate installation of the hot melting gasket can be achieved, and therefore the phenomenon that the hot melting gasket falls off due to hollowing and tightening of the waterproof layer in the drainage blind pipe area can be reduced through the tool.

Description

Technical Field

[0001] The utility model relates to a geotextile positioning tool for laying annular blind pipes in a tunnel, belonging to the technical field of tunnel drainage construction. Background Art

[0002] Traditional construction method of tunnel drainage: After the initial support surface treatment, the annular and longitudinal drainage blind pipes are installed, geotextiles are laid and hot-melt washers are set, and waterproof boards are laid and welded with hot-melt washers. However, during the construction process, there are often gaps in the geotextile installation at the annular blind pipe position of the drainage system, which can easily cause the detection of voids behind the lining concrete. Utility Model Content

[0003] Based on the above, the utility model provides a geotextile positioning tool for laying annular blind pipes in a tunnel to overcome the deficiencies of the prior art.

[0004] The technical solution of the utility model is: a geotextile positioning tool for laying annular blind pipes in tunnels, comprising:

[0005] A flattening assembly, comprising a pipe clamping rack and a flattening rack, wherein the bottom of the pipe clamping rack is open and a pipe clamping cavity is provided inside the rack, and the flattening rack is arranged on the outer sides of the lower parts of both sides of the pipe clamping rack, and grid holes are provided on the flattening rack;

[0006] The tube clamping assembly includes a clamping member, a tube clamping belt and a driving mechanism. The clamping members are respectively arranged on both sides of the lower part of the tube clamping cavity, and the two ends of the tube clamping belt are respectively connected to the clamping members on the left and right sides. The driving mechanism is connected to the clamping members, and the driving mechanism drives the clamping members to move closer to or away from each other.

[0007] In one example, the pipe clamping rack includes pillars, longitudinal beams and transverse beams, the longitudinal beams and transverse beams are sequentially connected to form a flat frame, and the pillars are arranged at the bottom of both sides of the flat frame.

[0008] In one example, the flattening frame includes longitudinal bars and transverse bars, a plurality of the longitudinal bars and transverse bars are cross-connected in a positive direction to form a flat frame, and the bottom of the support is arranged on the longitudinal bars on the side.

[0009] In one example, the inner side of the clamp is arc-shaped.

[0010] In one example, the clamping band is an elastic rubber band.

[0011] In one example, the driving mechanism is an electric telescopic rod, which is fixed on the flattening frame, and the rod end of the electric telescopic rod is connected to the outer side of the clamping member.

[0012] In one example, a handle is provided on the flattening frame.

[0013] The beneficial effects of the utility model are as follows: through the flattening component and the pipe clamping component, the tunnel lining waterproof layer can tightly wrap the drainage blind pipe, and the hot-melt gasket can be accurately installed, so that the tooling can reduce the hollowing of the waterproof layer in the drainage blind pipe area, the phenomenon of hot-melt gasket falling off due to tightness, and the phenomenon of hollowing and looseness behind the lining concrete, which not only ensures the quality of the arch wall lining entity, but also reduces the cost of shortage in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional image of the geotextile positioning tooling for laying the tunnel annular blind pipe;

[0015] Figure 2 Front view of the geotextile positioning tool for laying the tunnel annular blind pipe;

[0016] Description of reference numerals:

[0017] 1. a pipe holder, 11. a support, 12. a longitudinal beam, 13. a cross beam, 14. a pipe cavity, 2. a flattening frame, 21. a longitudinal rod, 22. a cross rod, 23. a grid hole, 24. a handle, 3. a holder, 4. a pipe belt, and 5. a driving mechanism. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0019] See also Figure 1 and Figure 2 , this embodiment provides a geotextile positioning tool for laying annular blind pipes in a tunnel, including a flattening component and a pipe clamping component.

[0020] The flattening assembly includes a pipe clamping frame 1 and a flattening frame 2. The pipe clamping frame 1 includes pillars 11, longitudinal beams 12 and transverse beams 13. Multiple longitudinal beams 12 and transverse beams 13 are sequentially connected to form a flat frame. Multiple pillars 11 are fixedly installed at the bottom of both sides of the flat frame, thereby forming a frame with an open bottom and a pipe clamping cavity 14 inside. The flattening frame 2 is installed on the lower outer side of both sides of the pipe clamping frame 1. The flattening frame 2 includes longitudinal bars 21 and transverse bars 22. Several longitudinal bars 21 and transverse bars 22 are positively crossed to form a flat frame, and the bottom of the pillars 11 is fixed on the longitudinal bars 21 on the side. The longitudinal bars 21 and transverse bars 22 are crossed to form a plurality of grid holes 23, through which hot melt washers can be installed.

[0021] The pipe clamping assembly includes a clamping member 3, a pipe clamping belt 4 and a driving mechanism 5. The clamping members 3 are movably arranged on both sides of the lower part of the pipe clamping cavity 14. The inner side of the clamping member 3 is arc-shaped so as to be clamped into the two sides of the bottom of the blind pipe. The two ends of the pipe clamping belt 4 are respectively connected to the tops of the clamping members 3 on the left and right sides. The driving mechanism 5 is an electric telescopic rod, which is fixedly installed on the flattening frame 2, and the rod end of the electric telescopic rod is connected to the outer side of the clamping member 3, so that the electric telescopic rod can drive the clamping members 3 to move closer to or away from each other.

[0022] In order to adapt to the positioning and installation of blind pipes with different pipe diameters, the pipe clamping band 4 is an elastic rubber band, which can realize more reliable positioning and fixing of the waterproof layer on the annular blind pipe in cooperation with the clamping member 3. In order to facilitate operation, a handle 24 is provided on the flattening frame 2.

[0023] The working principle of the geotextile positioning tooling for laying the above tunnel annular blind pipe is as follows:

[0024] During the laying of the waterproof layer in the tunnel, one person holds a tool and presses the waterproof layer, so that the flattening frame 2 is pressed on both sides of the annular blind pipe, and the pipe clamping frame 1 is erected above the annular blind pipe, and then the driving mechanism 5 drives the clamping member 3 to move to the bottom of both sides of the annular blind pipe, driving the pipe clamping belt 4 to fix the waterproof layer on the surface of the annular blind pipe, so that the tunnel lining waterproof layer tightly wraps the drainage blind pipe, and another person installs the hot melt gasket in the grid hole 23 as required. The tool can reduce the hollowing of the waterproof layer in the drainage blind pipe area, the phenomenon of the hot melt gasket falling off due to tension, and reduce the phenomenon of hollowing and looseness behind the lining concrete, which not only ensures the quality of the arch wall lining entity, but also reduces the cost of shortage in the later stage.

[0025] Application examples:

[0026] At present, the geotextile positioning tooling for laying annular blind pipes has been used in the left and right tunnels of the entrance of Guola Mountain Tunnel. The tooling has the following advantages:

[0027] (1) At the φ50 annular blind pipe in the tunnel, the geotextile tightly wraps the annular blind pipe without any tension or hollowing;

[0028] (2) Because the waterproof sheet has a certain plasticity and tension, when welding the hot-melt gasket and the waterproof sheet at the annular blind pipe, use the positioning tool to squeeze the waterproof sheet and the annular blind pipe tightly together before welding. The welding point is firm and not easy to fall off. The waterproof sheet and the annular blind pipe are tightly attached without hollowing or tension. The lining concrete pouring quality is good, and there is no looseness or hollowing.

[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A geotextile positioning tool for laying annular blind pipes in tunnels, characterized in that: include: A flattening assembly, comprising a pipe clamping rack (1) and a flattening rack (2), wherein the bottom of the pipe clamping rack (1) is open and a pipe clamping cavity (14) is provided inside the pipe clamping rack, and the flattening rack (2) is arranged on the outer sides of the lower part of both sides of the pipe clamping rack (1), and the flattening rack (2) is provided with grid holes (23); The tube clamping assembly comprises a clamping member (3), a tube clamping band (4) and a driving mechanism (5), wherein the clamping members (3) are respectively arranged on both sides of the lower part of the tube clamping cavity (14), and the two ends of the tube clamping band (4) are respectively connected to the clamping members (3) on the left and right sides, and the driving mechanism (5) is connected to the clamping members (3), and the driving mechanism (5) drives the clamping members (3) to move towards or away from each other.

2. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 1 is characterized in that: The pipe clamping rack (1) comprises pillars (11), longitudinal beams (12) and transverse beams (13); the longitudinal beams (12) and transverse beams (13) are sequentially connected to form a flat frame; the pillars (11) are arranged at the bottoms of both sides of the flat frame.

3. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 2 is characterized in that: The flattening frame (2) comprises longitudinal bars (21) and transverse bars (22), a plurality of longitudinal bars (21) and transverse bars (22) are intersected in a positive direction to form a flattening frame, and the bottom of the support (11) is arranged on the longitudinal bars (21) at the side.

4. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 1 is characterized in that: The inner side of the clamping piece (3) is in an arc shape.

5. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 1 is characterized in that: The clamping band (4) is an elastic rubber band.

6. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 1, characterized in that: The driving mechanism (5) is an electric telescopic rod, which is fixed on the flattening frame (2), and the rod end of the electric telescopic rod is connected to the outer side of the clamping member (3).

7. The geotextile positioning tool for laying annular blind pipes in tunnels according to claim 1, characterized in that: The flattening frame (2) is provided with a handle (24).

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