CN110608066A - Detection system for tunnel grouting depth - Google Patents
Detection system for tunnel grouting depth Download PDFInfo
- Publication number
- CN110608066A CN110608066A CN201910958111.6A CN201910958111A CN110608066A CN 110608066 A CN110608066 A CN 110608066A CN 201910958111 A CN201910958111 A CN 201910958111A CN 110608066 A CN110608066 A CN 110608066A
- Authority
- CN
- China
- Prior art keywords
- grouting
- tunnel
- depth
- signal reflection
- reflection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 239000011440 grout Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
Abstract
The invention discloses a tunnel grouting depth detection system which comprises a plurality of grouting holes arranged in a tunnel, a computer, a radar host electrically connected with the computer and a receiving and transmitting antenna electrically connected with the radar host, wherein the bottom of each grouting hole is provided with a signal reflection device. The invention has the beneficial effects 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 invention relates to the technical field of tunnel construction, in particular to a tunnel grouting depth detection system.
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.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a tunnel grouting depth detection system which is used for improving the accuracy of detecting the grouting depth.
The invention is realized by the following technical scheme: 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, in order to better implement the present invention, the signal reflection device employs a metal column.
Further, in order to better implement the invention, the driving end of the metal column is conical or wedge-shaped.
Further, in order to better implement the invention, the outer surface of the signal reflection device is coated with a rust-proof layer.
Further, in order to better implement the invention, the grouting holes are arranged along the same straight line.
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 embodiments of the present invention are 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 description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
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 |
|---|---|---|---|
| CN201910958111.6A CN110608066A (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958111.6A CN110608066A (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608066A true CN110608066A (en) | 2019-12-24 |
Family
ID=68894322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910958111.6A Pending CN110608066A (en) | 2019-10-10 | 2019-10-10 | Detection system for tunnel grouting depth |
Country Status (1)
| Country | Link |
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| CN (1) | CN110608066A (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4774470A (en) * | 1985-09-19 | 1988-09-27 | Mitsui Engineering & Shipbuilding Co., Ltd. | Shield tunneling system capable of electromagnetically detecting and displaying conditions of ground therearound |
| JP2005120619A (en) * | 2003-10-15 | 2005-05-12 | Toto Denki Kogyo Kk | Grout injection control device |
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