CN210829398U - Detection system for tunnel grouting depth - Google Patents
Detection system for tunnel grouting depth Download PDFInfo
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- CN210829398U CN210829398U CN201921691620.9U CN201921691620U CN210829398U CN 210829398 U CN210829398 U CN 210829398U CN 201921691620 U CN201921691620 U CN 201921691620U CN 210829398 U CN210829398 U CN 210829398U
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- grouting
- depth
- signal reflection
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Abstract
The utility model discloses a detecting system of tunnel grout degree of depth, including grout hole, computer, the radar host computer of being connected with the computer electricity of a plurality of setting in the tunnel and the receiving and dispatching antenna of being connected with the radar host computer electricity, the bottom in grout hole be provided with signal reflection device. The utility model has the advantages that: this scheme utilization signal reflection device uses with the radar host computer cooperation, and the detection principle of being convenient for utilize the radar detects the grout degree of depth, can realize detecting the tunnel full circuit through removing the radar host computer, has that detection speed is fast, detect the advantage that the precision is high, working strength is low to need not destroy the structure of pouring formation and original grout hole, if detect nonconformity, can also continue to be in order to satisfy the construction requirement on original basis in the grout.
Description
Technical Field
The utility model relates to a tunnel construction technical field, specific theory is a detecting system of tunnel grout degree of depth.
Background
The detection of the grouting depth of the tunnel is carried out aiming at the grouting surrounding rock at the back of the lining of the tunnel, and the traditional method is to judge whether the grouting depth reaches the design standard or not by checking the hole depth of a grouting hole. The operation of checking the grouting holes is simple and visual, but the grouting holes are more, if the checking holes are fewer, whether the overall grouting depth reaches the design standard depth cannot be reflected, if all the holes are checked, the workload is too large and difficult to complete, and the traditional hole checking mode has the problems of low measurement precision and incapability of adopting calculation to carry out digital recording. With the introduction of tunnel detection in the development of scientific technology, geological radar has the characteristics of high acquisition speed, convenience in acquisition, high data precision and no damage to structures, so that the geological radar is widely applied to tunnel detection. The geological radar identifies the stratum through the difference of dielectric constants of medium interfaces, but the grouting depth cannot be accurately judged due to the small difference of dielectric constants of the grouted rock mass and the un-grouted rock mass, so that the geological radar cannot be applied to the detection of the grouting depth, and the improved design is required.
SUMMERY OF THE UTILITY MODEL
For overcoming the deficiencies of the prior art, an object of the utility model is to provide a detecting system of tunnel grout degree of depth for precision when improving the detection grout degree of depth.
The utility model discloses a following technical scheme realizes: the utility model provides a detecting system of tunnel grout degree of depth, includes that a plurality of setting is in grouting hole, computer, the radar host computer of being connected with the computer electricity and the receiving and dispatching antenna of being connected with the radar host computer electricity in the tunnel, the bottom of grouting hole be provided with signal reflection device.
Further, for better realization the utility model discloses, signal reflection device adopt the metal column.
Furthermore, in order to better realize the utility model, the nailing end of the metal column is conical or wedge-shaped.
Further, for better realization the utility model discloses, signal reflection unit's surface coating have the antirust coat.
Further, for better realization the utility model discloses, grout hole along same inline.
The beneficial effect that this scheme obtained is:
this scheme utilization signal reflection device uses with the radar host computer cooperation, and the detection principle of being convenient for utilize the radar detects the grout degree of depth, can realize detecting the tunnel full circuit through removing the radar host computer, has that detection speed is fast, detect the advantage that the precision is high, working strength is low to need not destroy the structure of pouring formation and original grout hole, if detect nonconformity, can also continue to be in order to satisfy the construction requirement on original basis in the grout.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a schematic structural diagram of a signal reflection apparatus;
the method comprises the following steps of 1-primary lining, 2-secondary lining, 3-surrounding rock, 4-transmitting and receiving antenna, 5-radar host, 6-computer and 7-signal reflection device.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1:
as shown in fig. 1, in this embodiment, a system for detecting a grouting depth of a tunnel includes a plurality of grouting holes arranged in the tunnel, a computer 6, a radar host 5 electrically connected to the computer 6, and a transceiver antenna 4 electrically connected to the radar host, where a signal reflection device 7 is arranged at the bottom of the grouting holes.
When the tunnel is constructed, after the primary lining 1 and the secondary lining 2 are constructed, grouting is carried out in the range of the surrounding rock 3 outside the primary lining 1 through the grouting holes so as to fill gaps in the surrounding rock 3, the water leakage phenomenon is avoided, and the strength and the bearing capacity of the surrounding rock 3 are improved. The grouting range needs to meet certain depth requirements, and the signal reflection device is arranged at the bottom of the grouting hole. The transmitting and receiving antenna 4 emits electromagnetic waves within the range of the surrounding rock 3, the emitted electromagnetic waves are reflected when encountering the signal reflection device 7, the reflected electromagnetic waves are received by the transmitting and receiving antenna 4, and the grouting depth can be calculated through the time difference between the emitted electromagnetic waves and the received electromagnetic waves and the propagation speed of the electromagnetic waves in the rock stratum. The distance between the transmitting and receiving antenna 4 and the signal reflection device 7 is subtracted, the depth of the grouting hole can be obtained by subtracting the distance between the transmitting and receiving antenna 4 and the surface of the tunnel, and the default depth of the grouting hole is equal to the grouting depth. Whether the drilled grouting holes meet the construction requirements can be judged according to the measured grouting depth, so that the grouting holes which do not meet the construction requirements can be detected for processing under the condition that the drilling depth of some grouting holes does not meet the construction requirements due to the reasons of non-responsibility of constructors, construction errors and the like.
Because the used thick liquid diffusion scope of grout is less, can have thousands or more grouting holes in a tunnel, if adopt traditional detection method, can make work load increase to data are difficult to the statistics, and this scheme of adoption can effectively improve the efficiency that detects, and data statistics storage easily is favorable to guaranteeing construction quality.
Example 2:
as shown in fig. 2, on the basis of the above embodiment, in the present embodiment, the signal reflection device 7 employs a metal column.
The metal column with a certain length is adopted, so that the signal reflection device 7 can be conveniently nailed into the surrounding rock 3, the signal reflection device 7 is kept fixed, the signal reflection device 7 is prevented from being loosened or falling off to influence the position precision, and the signal receiving is prevented from being influenced.
In this embodiment, the driving end of the metal column is conical or wedge-shaped. Can make things convenient for signal reflection device 7 to nail into in country rock 3 with this, utilize conical or wedge-shaped end structure can make and produce extruded effect each other between signal reflection device 7 and the country rock 3 to can increase the joint strength between signal reflection device 7 and the country rock 3, in order to prevent that signal reflection device 7 from becoming flexible or droing.
The outer surface of the signal reflection device 7 is coated with a rust preventive layer. The signal reflection device 7 is prevented from rusting in a humid environment to cause the generation of metal oxide on the outer surface to influence the reflection of the signal.
Example 3:
on the basis of the above embodiment, in this embodiment, the grouting holes are arranged along the same line, so that the grouting slurry is uniformly distributed during grouting, and a grouting area with uniform thickness is formed. During detection, the monitoring system detects along the connecting line of adjacent grouting holes, and the grouting holes are arranged along the same straight line, so that the grouting area can be conveniently detected in the later period. The grouting holes are generally provided with one ring two meters along the length direction of the tunnel, each ring is provided with eight holes, so that the grouting holes of each ring are distributed according to the same position, and the grouting holes at the same height can be arranged along the same straight line along the length direction of the tunnel.
In this embodiment, other undescribed contents are the same as those in the above embodiment, and thus are not described again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (5)
1. The utility model provides a detecting system of tunnel grout degree of depth which characterized in that: the tunnel grouting device comprises a plurality of grouting holes arranged in a tunnel, a computer (6), a radar host (5) electrically connected with the computer (6) and a transmitting and receiving antenna (4) electrically connected with the radar host, wherein a signal reflection device (7) is arranged at the bottom of each grouting hole.
2. The system for detecting the grouting depth of the tunnel according to claim 1, wherein: the signal reflection device (7) adopts a metal column.
3. The system for detecting the grouting depth of the tunnel according to claim 2, wherein: the nailing end of the metal column is conical or wedge-shaped.
4. A tunnel grouting depth detection system according to claim 2 or 3, wherein: the outer surface of the signal reflection device (7) is coated with an anti-rust layer.
5. The system for detecting the grouting depth of the tunnel according to claim 1, wherein: the grouting holes are arranged along the same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691620.9U CN210829398U (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921691620.9U CN210829398U (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
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| CN210829398U true CN210829398U (en) | 2020-06-23 |
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| CN201921691620.9U Active CN210829398U (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608066A (en) * | 2019-10-10 | 2019-12-24 | 中国五冶集团有限公司 | Detection system for tunnel grouting depth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608066A (en) * | 2019-10-10 | 2019-12-24 | 中国五冶集团有限公司 | Detection system for tunnel grouting depth |
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