Tunnel lining waterproof plate relaxation degree detection tool

Abstract

The utility model discloses a tunnel lining waterproof plate relaxation degree detection tool comprising the following elements: a support unit comprising support frames and a crossbeam frame, the support frames being erected at two ends of the crossbeam frame; the detection unit comprises a fixing rod, a detection rod and a spring, the fixing rod is vertically and fixedly arranged on the cross beam frame, the detection rod is movably arranged in the fixing rod in a sleeved mode, the spring is arranged between the top of the detection rod and the inner top of the fixing rod, and in a natural state, the detection rod is movably sleeved with the spring. The spring drives the detection rod to move downwards and enables the bottom end of the detection rod to extend to the position below the supporting frame. The support frame, the cross beam frame, the fixing rod, the detection rod and the spring are combined to form the waterproof plate looseness detection tool, the waterproof plate looseness is measured through stretching and retracting of the detection rod, and in the waterproof plate hanging process, the tool is used at any time to detect the hanging quality of the waterproof plate so as to ensure that the convex-concave surface of the waterproof plate meets the design requirement; and the laying flatness of the waterproof plate is greatly improved.

Description

Technical Field

[0001] The utility model relates to a detection tool for the relaxation degree of a waterproof board of a tunnel lining, belonging to the technical field of the installation of the waterproof board of the tunnel lining. Background Art

[0002] The outlet section of the Duomuge Tunnel belongs to a weakly water-rich area with bedrock fissure water. The lithology is slate intercalated with meta-sandstone. The normal water inflow is 1292 m³ / d, and the maximum possible water inflow in this section is 2584 m³ / d. There may be sections with sudden gushing water or concentrated water gushing during tunnel excavation. At present, from the construction process, it basically conforms to the designed water inflow, and the quality of waterproof and drainage construction is the key point of the construction of the Duomuge Tunnel. Currently, the phenomena of water seepage and gushing water on the primary support surface of the tunnel occur frequently, and it is difficult to control the flatness of the primary support surface, resulting in problems such as poor hanging quality of the waterproof board and voids behind the lining; through treatment measures such as grouting to block water and supplementary spraying on the primary support, the flatness of the primary support surface basically meets the requirements of the design and specifications, but the hanging quality of the waterproof board still cannot be effectively controlled, and the voids behind the lining lead to an increase in the cost of grouting with formwork. Content of the Utility Model

[0003] Based on the above, the utility model provides a detection tool for the relaxation degree of a waterproof board of a tunnel lining to overcome the deficiencies of the prior art.

[0004] The technical solution of the utility model is: a detection tool for the relaxation degree of a waterproof board of a tunnel lining, comprising:

[0005] A support unit, which includes a support frame and a cross beam frame, and the support frame is arranged at both ends of the cross beam frame;

[0006] A detection unit, including a fixed rod, a detection rod and a spring. The fixed rod is vertically fixed on the cross beam frame, the detection rod is movably sleeved in the fixed rod, and a spring is arranged between the top of the detection rod and the inner top of the fixed rod. In the natural state, the spring drives the detection rod to move downward and makes its bottom end extend below the support frame.

[0007] In one example, an installation cavity and a movable cavity are connected in the fixed rod. The transverse dimension of the installation cavity is larger than that of the movable cavity. The detection rod is movably installed in the movable cavity. A limit block is arranged at the top of the detection rod, and the limit block is located in the installation cavity. The spring is installed between the limit block and the inner top of the installation cavity.

[0008] In one example, an adjusting bolt is arranged at the top of the fixed rod. The adjusting bolt extends downward into the installation cavity, and an adjusting plate is arranged at the bottom of the adjusting bolt. The spring is installed between the adjusting plate and the limit block.

[0009] In one example, the support frame is an inverted V-shaped frame. Traveling wheels are provided at both bottom ends of the inverted V-shaped frame. A roller is provided at the bottom of the detection rod, and the traveling direction of the roller is the same as that of the traveling wheels.

[0010] In one example, scale values are provided at intervals along the length direction of the detection rod.

[0011] In one example, a transmitting end and a receiving end of a proximity sensor are respectively installed on the detection rod and the fixed rod. The transmitting end is embedded in the rod body, and the receiving end is installed on the side surface of the fixed rod. Both the transmitting end and the receiving end are electrically connected to a controller, and the controller is electrically connected to the alarm. When the transmitting end moves down with the detection rod and extends out of the fixed rod and faces the receiving end, a signal is generated and an alarm is given.

[0012] In one example, a handle is provided at the top of the fixed rod.

[0013] The beneficial effects of the present utility model are as follows: A waterproof board slackness detection tooling is formed by combining a support frame, a cross beam frame, a fixed rod, a detection rod and a spring. The slackness of the waterproof board is measured by the telescoping of the detection rod. During the hanging process of the waterproof board, the tooling can be used at any time to detect the hanging quality of the waterproof board, so as to ensure that the convex and concave surfaces of the waterproof board meet the design requirements. The laying flatness of the waterproof board is greatly improved, the phenomenon of rework is avoided, the frequency of the phenomenon of voids behind the lining is reduced, the cost of reworking the waterproof board and the subsequent grouting with formwork is saved, and it has a positive effect on the construction quality of tunnel waterproof and drainage and the construction cost of defect rectification. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of a waterproof board slackness detection tooling;

[0015] Figure 2 It is another schematic diagram of a waterproof board slackness detection tooling

[0016] Figure 3 It is for Figure 1 longitudinal sectional view of;

[0017] Description of the Reference Numerals:

[0018] 11 Support frame, 12 Cross beam frame, 13 Traveling wheels, 14 Handle;

[0019] 21 Fixed rod, 211 Installation cavity, 212 Movable cavity, 22 Detection rod, 23 Spring, 24 Roller, 25 Limit block, 26 Adjusting bolt, 27 Adjusting plate, 28 Scale value, 29 Transmitting end, 30 Receiving end. Detailed Description of the Embodiment

[0020] In order to make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. A lot of specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] Please refer to Figures 1 to 3 , in this embodiment, a detection tool for the relaxation degree of a waterproof board for tunnel lining includes a support unit and a detection unit.

[0022] The support unit includes a support frame 11 and a cross - beam frame 12. The support frame 11 is erected at both ends of the cross - beam frame 12, thereby suspending and supporting the cross - beam frame 12. The detection unit includes a fixed rod 21, a detection rod 22 and a spring 23. The fixed rod 21 is vertically installed in the middle of the cross - beam frame 12. The detection rod 22 is movably sleeved in the fixed rod 21, and a spring 23 is provided between the top of the detection rod 22 and the inner top of the fixed rod 21. In the natural state, the spring 23 drives the detection rod 22 to move downward and makes its bottom end extend below the support frame 11. The relaxation degree of the installation of the waterproof board can be judged by the downward movement amplitude of the detection rod 22.

[0023] In one example, an installation cavity 211 and a movable cavity 212 are connected in the fixed rod 21. The transverse dimension of the installation cavity 211 is larger than that of the movable cavity 212. The detection rod 22 is movably installed in the movable cavity 212. A limit block 25 is installed at the top of the detection rod 22. The limit block 25 is located in the installation cavity 211. The limit block 25 can move in the installation cavity 211 but cannot enter the movable cavity 212. The spring 23 is installed between the limit block 25 and the inner top of the installation cavity 211. The above structure makes the detection rod 22 not break away from the fixed rod 21.

[0024] In one example, an adjusting bolt 26 is installed at the top of the fixed rod 21. The adjusting bolt 26 extends downward into the installation cavity 211, and an adjusting plate 27 is provided at the bottom of the adjusting bolt 26. The spring 23 is installed between the adjusting plate 27 and the limit block 25. The stroke of the spring 23 can be adjusted by the adjusting bolt 26, and then the elastic force can be adjusted.

[0025] In one example, both support frames 11 are in an inverted V - shaped frame. Travel wheels 13 are provided at both bottom ends of the inverted V - shaped frame. A roller 24 is provided at the bottom of the detection rod 22. The traveling direction of the roller 24 is the same as that of the travel wheels 13. Through this structure, the detection tool can quickly move along the waterproof board for detection, improving the detection efficiency.

[0026] In one example, as Figure 1As shown, scale values 28 are provided at intervals along the length direction of the detection rod 22, and the slackness of the waterproof board installation is judged by the scale values 28 exposed by the downward movement of the detection rod 22. In other embodiments, such as Figure 2 As shown, a transmitting end 29 and a receiving end 30 of a proximity sensor can be respectively installed on the detection rod 22 and the fixed rod 21. It should be noted that the transmitting end 29 on the detection rod 22 can be embedded and installed in the rod body, while the receiving end 30 on the fixed rod 21 can be installed on the side of the fixed rod 21. The transmitting end 29 and the receiving end 30 are both electrically connected to the controller, and the controller is electrically connected to the alarm. When the transmitting end 29 extends out of the fixed rod 21 and faces the receiving end 30 as the detection rod 22 moves downward, a signal is generated and the alarm gives an alarm.

[0027] In one example, for convenient operation, a handle 14 is provided at the top of the fixed rod 21.

[0028] The working principle of the above-mentioned detection tool for the slackness of the waterproof board of the tunnel lining is as follows:

[0029] Press the two side support frames 11 against the two convex surfaces of the waterproof board, hold the handle, and measure the slackness of the waterproof board by the telescopic movement of the detection rod 22. During the hanging process of the waterproof board, use the tool to detect the hanging quality of the waterproof board at any time to ensure that the convex and concave surfaces of the waterproof board meet the requirement of D / L≤1 / 20 (D is the concave depth between the convex surfaces, L≤1.0m, is the distance between the two convex surfaces), and improve the hanging quality of the waterproof board.

[0030] Application case:

[0031] At present, the detection tool for the slackness quality of the waterproof board of the lining is initially applied at the exit of the Duomuge Tunnel, and the overall effect is good. Through the application of the tool, the laying quality of the waterproof board of the lining has been effectively improved. The radar monitoring data of the constructed lining shows that the lining void ratio has decreased significantly (the current void ratio does not exceed 0.7%); usually, for a 12-meter lining per board, about 25-40 bags of grouting materials are required, and now it has been reduced to about 15 bags, reducing the total construction cost by 1.161 million yuan, and the cost of grouting with formwork has decreased significantly.

[0032] The above-mentioned embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A tunnel lining waterproof board looseness detection tool, characterized in that: include: A bracket unit, comprising a support frame (11) and a crossbeam frame (12), wherein the support frame (11) is mounted on both ends of the crossbeam frame (12); The detection unit comprises a fixing rod (21), a detection rod (22) and a spring (23), wherein the fixing rod (21) is vertically fixed on the crossbeam frame (12), the detection rod (22) is movably sleeved in the fixing rod (21), and a spring (23) is provided between the top of the detection rod (22) and the inner top of the fixing rod (21), and in a natural state, the spring (23) drives the detection rod (22) to move downward and causes its bottom end to extend below the support frame (11).

2. The tunnel lining waterproof board looseness detection tool according to claim 1 is characterized in that: The fixed rod (21) is provided with a connected installation cavity (211) and a movable cavity (212); the transverse dimension of the installation cavity (211) is larger than the transverse dimension of the movable cavity (212); the detection rod (22) is movably installed in the movable cavity (212); a limit block (25) is provided on the top of the detection rod (22); the limit block (25) is located in the installation cavity (211); and the spring (23) is installed between the limit block (25) and the inner top of the installation cavity (211).

3. The tunnel lining waterproof board looseness detection tool according to claim 2 is characterized in that: An adjusting bolt (26) is provided at the top of the fixing rod (21), the adjusting bolt (26) extends downward into the mounting cavity (211), and an adjusting plate (27) is provided at the bottom of the adjusting bolt (26), the spring (23) being installed between the adjusting plate (27) and the limiting block (25).

4. The tunnel lining waterproof board slack detection tool according to claim 1 is characterized in that: The support frame (11) is an inverted V-shaped frame, and running wheels (13) are provided at both ends of the bottom of the inverted V-shaped frame. A roller (24) is provided at the bottom of the detection rod (22), and the running direction of the roller (24) is consistent with the running direction of the running wheel (13).

5. The tunnel lining waterproof board looseness detection tool according to claim 1 is characterized in that: The detection rod (22) is provided with scale values ​​(28) at intervals along the length direction.

6. The tunnel lining waterproof board looseness detection tool according to claim 1 is characterized in that: The detection rod (22) and the fixed rod (21) are respectively mounted with a transmitting end (29) and a receiving end (30) of a proximity sensor. The transmitting end (29) is embedded in the rod body, and the receiving end (30) is mounted on the side of the fixed rod (21). Both the transmitting end (29) and the receiving end (30) are electrically connected to a controller, and the controller is electrically connected to an alarm. When the transmitting end (29) moves downward with the detection rod (22) and extends out of the fixed rod (21) and faces the receiving end (30), a signal is generated and an alarm is sounded.

7. The tunnel lining waterproof board looseness detection tool according to claim 1 is characterized in that: A handle (14) is provided on the top of the fixing rod (21).

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