CN220415466U - Tunnel construction electric signal cavity detection sensor and two lining structures - Google Patents
Tunnel construction electric signal cavity detection sensor and two lining structures Download PDFInfo
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- CN220415466U CN220415466U CN202321505780.6U CN202321505780U CN220415466U CN 220415466 U CN220415466 U CN 220415466U CN 202321505780 U CN202321505780 U CN 202321505780U CN 220415466 U CN220415466 U CN 220415466U
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- 238000001514 detection method Methods 0.000 title claims abstract description 102
- 238000010276 construction Methods 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000004033 plastic Substances 0.000 claims description 12
- 239000011800 void material Substances 0.000 claims description 11
- 239000012785 packaging film Substances 0.000 claims description 7
- 229920006280 packaging film Polymers 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims 2
- 229920006255 plastic film Polymers 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000004746 geotextile Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a tunnel construction electric signal cavity detection sensor and a two-lining structure, wherein the sensor comprises a sealing structure and a detection assembly, and the detection assembly comprises a positive plate, a negative plate, a positive wire and a negative wire; the first end of the positive plate and the first end of the negative plate are arranged in the sealing structure, the second end of the positive plate and the second end of the negative plate are positioned outside the sealing structure after penetrating through the side part of the sealing structure, and the distance between the second end of the positive plate and the second end of the negative plate is smaller than a threshold value; the first end of the positive electrode lead is connected with the first end of the positive electrode plate, the first end of the negative electrode lead is connected with the first end of the negative electrode plate, and the second end of the positive electrode lead and the second end of the negative electrode lead penetrate through the end part of the sealing structure and then are positioned outside the sealing structure. The utility model is applied to the field of tunnel construction, not only can be conveniently and quickly installed on the two lining surfaces, but also has lower cost.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a tunnel construction electric signal cavity detection sensor and a two-lining structure.
Background
The lining process of tunnel construction mainly comprises the following steps: 1. primary support: performing reinforcement support and concrete guniting on the surrounding rock surface of the foundation; 2. laying geotextile on the surface of the primary support; 3. paving waterproof boards (mostly impermeable materials of PE, EVA and other materials) on the surfaces of geotextiles; 4. binding second lining steel bars; 5. secondary lining is performed using formwork (multiple secondary lining trolleys) supports. In the secondary lining process of the step 5, the top of the secondary lining is not full easily due to invisible concrete pouring process, and the construction quality is affected by forming a cavity, so that the cavity detection is indispensable.
At present, the cavity detection based on the electric signal mostly uses a cable as a detection probe when concrete is poured in tunnel construction, the cable is pre-buried to a tunnel vault, and whether the concrete is full is detected in a mode that the electric signal is detected by the anode and the cathode of the cable through the electric conduction of the concrete. However, the construction area is larger during tunnel construction, and the construction length of the primary section reaches 6-12M, so that cable points need to be paved with more than six cable points. Therefore, the following difficulties exist in construction:
1. when the cable is detected, positive and negative electrode cables are needed, so that the length of each detection point used by the cable reaches 30 meters, and the consumption of the cables is high;
2. the cable laying workload is large, and each detection point is laid with cables which are manually and singly bound on the two lining steel bars;
3. because the cable is unprotected, the cable is used for double-layer rubber sleeve wire protection, which is time-consuming and labor-consuming.
In summary, when the cable is used as the detection probe, the difficulty of laying is high, and the time consumption is long, which is an important factor affecting the tunnel construction quality and the construction period. Therefore, a concrete air-raid shelter sensor which can be conveniently and rapidly installed and is high in detection precision is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the tunnel construction electric signal cavity detection sensor and the two-facing structure, which not only can be conveniently and rapidly arranged on the two-facing, but also have lower cost.
In order to achieve the above purpose, the utility model provides a tunnel construction electric signal cavity detection sensor, which comprises a sealing structure and a detection assembly, wherein the detection assembly comprises a positive plate, a negative plate, a positive wire and a negative wire;
the first end of the positive plate and the first end of the negative plate are arranged in the sealing structure, the second end of the positive plate and the second end of the negative plate are positioned outside the sealing structure after passing through the side part of the sealing structure, and the distance between the second end of the positive plate and the second end of the negative plate is smaller than a threshold value;
the first end of the positive electrode lead is connected with the first end of the positive electrode plate, the first end of the negative electrode lead is connected with the first end of the negative electrode plate, and the second end of the positive electrode lead and the second end of the negative electrode lead penetrate through the end part of the sealing structure and then are located outside the sealing structure.
As a preferable technical scheme, the number of the detection components is a plurality;
in the same group of detection assemblies, the positive electrode plate and the negative electrode plate form a group of detection electrodes together;
on the sealing structure, each group of detection electrodes are sequentially distributed at intervals.
Preferably, the second ends of all the positive electrode wires and all the negative electrode wires are led out from the end of the sealing structure after being gathered together in the sealing structure.
As a preferable technical scheme, the sealing structure comprises two strip-shaped plastic packaging films, and the two plastic packaging films are laminated;
the first end of the positive plate and the first end of the negative plate are both positioned between the two plastic packaging films.
As a preferable technical scheme, the sealing structure is provided with a connecting structure for connecting the waterproof board.
As a preferable technical scheme, the connecting structure is double-sided self-adhesive.
As a preferable technical scheme, the positive plate and the negative plate are copper sheets.
In order to achieve the above purpose, the present utility model further provides a two-facing structure with a cavity detection function, which comprises a waterproof board with an arch structure and the above tunnel construction electric signal cavity detection sensor;
the tunnel construction electric signal cavity detection sensor is connected to the vault of the waterproof board along the length direction of the tunnel.
In order to achieve the above purpose, the present utility model further provides a two-facing structure with a cavity detection function, which comprises a waterproof board with an arch structure and a plurality of tunnel construction electric signal cavity detection sensors;
the tunnel construction electric signal cavity detection sensors are connected to the waterproof plate along the circumferential direction, and the tunnel construction electric signal cavity detection sensors are distributed on the waterproof plate at intervals along the length direction of the tunnel.
In order to achieve the above purpose, the utility model also provides a two-facing structure with a cavity detection function, which comprises a waterproof board with an arch structure and a plurality of tunnel construction electric signal cavity detection sensors;
one of the tunnel construction electric signal cavity detection sensors is connected to the vault of the waterproof board along the length direction of the tunnel;
and the remaining tunnel construction electric signal cavity detection sensors are connected to the waterproof plate at intervals along the length direction of the tunnel.
Compared with the prior art, the utility model has the following beneficial technical effects:
1. according to the utility model, the plurality of detection assemblies are distributed on the sealing structure, so that the cavity detection in multiple areas can be performed by one sensor, the cavity detection efficiency can be effectively improved, and the cost is lower;
2. the utility model utilizes the sealing structure to carry out integral packaging on the positive plate, the negative plate, the positive wire and the negative wire, thereby effectively reducing the installation time of the sensor in use;
3. in the preferred scheme, the plastic packaging film is used as a sealing structure, and the industrial self-adhesive is used as a connecting structure on the plastic packaging film, so that the sensor can be conveniently and rapidly installed on the two lining surfaces, and the construction efficiency is effectively increased.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of a sensor according to embodiment 1 of the present utility model;
FIG. 2 is a front view of the measuring sensor in embodiment 1 of the present utility model;
FIG. 3 is a front view of a two-faced structure of embodiment 2 of the present utility model;
fig. 4 is a side view of a two-sided structure in embodiment 3 of the present utility model.
Reference numerals: positive plate 1, negative plate 2, positive wire 3, negative wire 4, plastic envelope 5, two-sided adhesive 6, waterproof board 7, sensor 8.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Fig. 1 and fig. 2 show a tunnel construction electric signal cavity detection sensor (hereinafter referred to as a "sensor") disclosed in this embodiment, which mainly includes a sealing structure and a detection assembly, wherein the detection assembly includes a positive electrode plate 1, a negative electrode plate 2, a positive electrode wire 3 and a negative electrode wire 4. The first end of the positive plate 1 and the first end of the negative plate 2 are arranged in the sealing structure, the second end of the positive plate 1 and the second end of the negative plate 2 are located outside the sealing structure after penetrating through the side part of the sealing structure, the distance between the second end of the positive plate 1 and the second end of the negative plate 2 is smaller than a threshold, and the threshold can be set according to the accuracy of cavity detection, for example, the threshold is set to be 1-3 cm. The first end of the positive electrode lead 3 is connected with the first end of the positive electrode plate 1, the first end of the negative electrode lead 4 is connected with the first end of the negative electrode plate 2, and the second end of the positive electrode lead 3 and the second end of the negative electrode lead 4 penetrate through the end part of the sealing structure and then are located outside the sealing structure.
The tunnel composite lining structure is composed of primary support, geotextile, waterproof boards and secondary lining, and is blocked by the waterproof boards during construction, so that secondary lining concrete and waterproof boards are often not poured fully enough, a cavity is formed behind the secondary lining, and engineering quality is affected. Therefore, the sensor in this embodiment can be placed on the waterproof board before the secondary lining of the concrete. Because the concrete has certain conductivity, when the concrete covers the positive plate 1 and the negative plate 2 completely, the positive plate 1 and the negative plate 2 are conducted, and the concrete at the position of the detection assembly can be detected to be poured. The second end of the positive electrode lead 3 and the second end of the negative electrode lead 4 can be connected into an external signal amplifying circuit by considering that concrete belongs to a poor conductor, and an electric signal generated by the detection assembly is weak, so that the detection precision is improved. As to how to set the signal amplifying circuit to amplify the electrical signal, the conventional technical means is adopted, so the description of the embodiment is omitted.
As a preferred embodiment, the number of detection components is a plurality. In the same group of detection components, the positive plate 1 and the negative plate 2 form a group of detection electrodes together, so that the detection electrodes of each group are sequentially arranged at intervals on a sealing structure. Because a plurality of detection components are arranged, after the sensor is arranged on the waterproof board, each group of detection components in the sensor corresponds to one detection area, so that the cavity detection in multiple areas can be performed through one sensor, the cavity detection efficiency can be effectively improved, and the cost is lower. It is further preferred that the second ends of all the positive conductors 3 together with all the negative conductors 4 are led out from the end of the sealing structure after being gathered in the sealing structure, thereby reducing the volume of the sensor. And the led positive lead 3 and the led negative lead 4 are provided with different marks, so that a worker can conveniently and rapidly distinguish each detection assembly, and further rapidly judge whether the corresponding detection area is poured fully. In the specific implementation process, marks or binding labels can be written on each positive electrode lead 3 and each negative electrode lead 4 to serve as marks, and different colors can also be used as marks.
In a specific implementation process, the sealing structure comprises two strip-shaped plastic sealing films 5, the two plastic sealing films 5 are laminated, and the first end of the positive plate 1 and the first end of the negative plate 2 are both positioned between the two plastic sealing films 5. Adopt plastic envelope membrane 5 as seal structure, not only can carry out whole packing to positive pole piece 1, negative pole piece 2, positive pole wire 3 and negative pole wire 4, reduce the installation time of sensor, the electricity that the protection line row passed does not receive the concrete interference, has lower material cost moreover, and the process of machine-shaping is simple and convenient simultaneously.
In this embodiment, the sealing structure is provided with a connection structure for connecting the waterproof board. Specifically, the connecting structure is a double-sided self-adhesive 6 adhered to any one plastic packaging film 5, so that the cavity detection sensor can be conveniently and rapidly fixed on the waterproof board.
In this embodiment, the positive electrode sheet 1 and the negative electrode sheet 2 are copper sheets. Of course, the copper sheet is not limited to or used, and other materials with conductivity can be used.
Example 2
Fig. 3 shows a two-facing structure with void detection function according to the present embodiment, which mainly includes a waterproof board 7 with an arch structure and a sensor 8 in embodiment 1.
Specifically, the sensor 8 is bonded to the dome of the waterproof sheet 7 along the length direction of the tunnel. Wherein each detection assembly of the sensor 8 corresponds to a detection area of the dome of one flashing 7. In the secondary lining process, if a certain detection component generates an electric signal, the detection area corresponding to the detection component is poured fully, and if a certain film pressure sensor 8 does not generate an electric signal, the detection area corresponding to the detection component still has a cavity, and concrete needs to be poured continuously.
Example 3
Fig. 4 shows a two-facing structure with void detection function according to this embodiment, which mainly includes a waterproof board 7 with an arch structure and a plurality of sensors 8 in embodiment 1.
Specifically, the sensors 8 are connected to the waterproof board 7 in the circumferential direction, and the electrical signal void detection sensors 8 for each tunnel construction are distributed at intervals on the waterproof board 7 in the longitudinal direction of the tunnel. Wherein each detection assembly of each sensor 8 corresponds to the detection area of the dome of one flashing 7. In the secondary lining process, if a certain detection component generates an electric signal, the detection area corresponding to the detection component is poured fully, and if a certain film pressure sensor 8 does not generate an electric signal, the detection area corresponding to the detection component still has a cavity, and concrete needs to be poured continuously.
Example 4
The embodiment discloses a two-facing structure with a cavity detection function, which comprises a waterproof board with an arch structure and a plurality of sensors in embodiment 1.
Specifically, one of the tunnel construction electric signal void detection sensors is connected to the dome of the waterproof sheet in the length direction of the tunnel, that is, the same positional structure as in example 2 is adopted. The remaining tunnel construction electric signal void detection sensors are connected to the waterproof board at intervals along the length direction of the tunnel, that is, the same position structure as in embodiment 3 is adopted. Wherein each sensing assembly of each sensor corresponds to a sensing area of a dome of the flashing. When the lining is secondarily lined, if a certain detection component generates an electric signal, the detection area corresponding to the detection component is poured fully, and if a certain film pressure sensor does not generate an electric signal, the detection area corresponding to the detection component still has a cavity, and concrete needs to be poured continuously.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. The tunnel construction electric signal cavity detection sensor is characterized by comprising a sealing structure and a detection assembly, wherein the detection assembly comprises a positive plate, a negative plate, a positive wire and a negative wire;
the first end of the positive plate and the first end of the negative plate are arranged in the sealing structure, the second end of the positive plate and the second end of the negative plate are positioned outside the sealing structure after passing through the side part of the sealing structure, and the distance between the second end of the positive plate and the second end of the negative plate is smaller than a threshold value;
the first end of the positive electrode lead is connected with the first end of the positive electrode plate, the first end of the negative electrode lead is connected with the first end of the negative electrode plate, and the second end of the positive electrode lead and the second end of the negative electrode lead penetrate through the end part of the sealing structure and then are located outside the sealing structure.
2. The tunnel construction electrical signal void detection sensor according to claim 1, wherein the number of the detection components is plural;
in the same group of detection assemblies, the positive electrode plate and the negative electrode plate form a group of detection electrodes together;
on the sealing structure, each group of detection electrodes are sequentially distributed at intervals.
3. The tunnel construction electric signal void detection sensor according to claim 2, wherein the second ends of all the positive electrode wires and all the negative electrode wires are led out from the end of the sealing structure after being gathered together in the sealing structure.
4. The sensor for detecting the cavity of the electrical signal for tunnel construction according to claim 1, 2 or 3, wherein the sealing structure comprises two elongated plastic films, and the two plastic films are laminated;
the first end of the positive plate and the first end of the negative plate are both positioned between the two plastic packaging films.
5. A tunnel construction electric signal cavity detection sensor according to claim 1, 2 or 3, wherein the sealing structure is provided with a connecting structure for connecting a waterproof board.
6. The electrical signal cavity detection sensor for tunnel construction of claim 5, wherein the connection structure is double-sided self-adhesive.
7. The tunnel construction electric signal cavity detection sensor according to claim 1, 2 or 3, wherein the positive electrode sheet and the negative electrode sheet are copper sheets.
8. A two-facing structure having a void detection function, characterized by comprising a waterproof board of an arch structure and the tunnel construction electric signal void detection sensor according to any one of claims 1 to 7;
the tunnel construction electric signal cavity detection sensor is connected to the vault of the waterproof board along the length direction of the tunnel.
9. A two-facing structure having a void detection function, characterized by comprising a waterproof board of an arch structure and a plurality of tunnel construction electric signal void detection sensors as defined in any one of claims 1 to 7;
the tunnel construction electric signal cavity detection sensors are connected to the waterproof plate along the circumferential direction, and the tunnel construction electric signal cavity detection sensors are distributed on the waterproof plate at intervals along the length direction of the tunnel.
10. A two-facing structure with a cavity detection function, which is characterized by comprising a waterproof board with an arch structure and a plurality of tunnel construction electric signal cavity detection sensors as claimed in any one of claims 1 to 7;
one of the tunnel construction electric signal cavity detection sensors is connected to the vault of the waterproof board along the length direction of the tunnel;
and the remaining tunnel construction electric signal cavity detection sensors are connected to the waterproof plate at intervals along the length direction of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321505780.6U CN220415466U (en) | 2023-06-14 | 2023-06-14 | Tunnel construction electric signal cavity detection sensor and two lining structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321505780.6U CN220415466U (en) | 2023-06-14 | 2023-06-14 | Tunnel construction electric signal cavity detection sensor and two lining structures |
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| Publication Number | Publication Date |
|---|---|
| CN220415466U true CN220415466U (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321505780.6U Active CN220415466U (en) | 2023-06-14 | 2023-06-14 | Tunnel construction electric signal cavity detection sensor and two lining structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220415466U (en) |
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2023
- 2023-06-14 CN CN202321505780.6U patent/CN220415466U/en active Active
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