CN109405776A - Tunnel Second Lining supplements slip casting thickness detecting equipment - Google Patents
Tunnel Second Lining supplements slip casting thickness detecting equipment Download PDFInfo
- Publication number
- CN109405776A CN109405776A CN201811391714.4A CN201811391714A CN109405776A CN 109405776 A CN109405776 A CN 109405776A CN 201811391714 A CN201811391714 A CN 201811391714A CN 109405776 A CN109405776 A CN 109405776A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- ultrasonic
- ultrasonic wave
- slip casting
- lining
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
- G01B17/025—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness for measuring thickness of coating
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The present invention relates to thickness of tunnel linings detection techniques.The invention discloses a kind of Tunnel Second Linings to supplement slip casting thickness detecting equipment, including supersonic generator, ultrasonic wave transmitting probe, ultrasonic wave receiving transducer, ultrasonic receiver, data processing system and power supply device；The ultrasonic pulse signal of the supersonic generator output, driving ultrasonic wave transmitting probe issue ultrasonic wave；The ultrasonic wave receiving transducer receives reflected ultrasonic signal, is converted into electric signal input ultrasonic receiver；The data processing system is connect with supersonic generator and ultrasonic receiver, and control supersonic generator issues ultrasonic signal by ultrasonic wave transmitting probe, and receives the electric signal of ultrasonic receiver output；The power supply device provides power supply for equipment.The present invention can satisfy the requirement of Tunnel Second Lining supplement slip casting thickness real-time detection, during Tunnel Second Lining supplements mortar depositing construction, easily detect secondary lining thickness in real time.
Description
Technical field
The present invention relates to Tunnel Engineering technologies, in particular to thickness of tunnel linings detection technique, and in particular to tunnel is secondary
Lining cutting supplements slip casting thickness detecting equipment.
Background technique
Lining cutting is surrouding rock deformation in order to prevent or collapsing, is built forever along materials such as tunnel trunk periphery armored concrete
Long property supporting construction.Lining Technique is usually applied to traffic tunnel, in water conservancy channel.
Secondary lining be with preliminary bracing in contrast, be under conditions of tunnel has carried out preliminary bracing, with mixed
The inner lining that the materials such as solidifying soil are built.Tunnel Second Lining is to provide safety stock or bears the tunnel of later period pressure from surrounding rock
Important feature.
Tunnel Second Lining in the construction process, often due to cement concrete mobility is bad, pumping pressure is insufficient,
The reasons such as withdrawing pumping line is too early, exhaust pipe installation is lack of standardization, cause tunnel vault concrete grouting to owe full, in addition secondary lining
Building concrete under the influence ofs gravity and drying shrinkage effect etc., cause Tunnel Second Lining vault concrete easily occur vault come to nothing,
Thickness deficiency problem.Tunnel Second Lining thickness is insufficient, influences the overall stability of tunnel structure, threatens tunnel safety operation.
In order to make up Tunnel Second Lining thickness deficiency problem, unit in charge of construction generallys use the method for supplement slip casting, supplies
Tunnel Second Lining thickness, and increase secondary lining intensity.
Prior art Tunnel Second Lining supplements slip casting, judges whether to have filled secondary lining arch by control grouting pressure
It comes to nothing on top.The method can only judge whether secondary lining supplement slip casting has filled vault and come to nothing indirectly, directly can not accurately sentence
Whether disconnected Tunnel Second Lining thickness has reached design standard.Especially not in place cause have gas encountering plugging or exhaust pipe installation
In the presence of capsule, grouting pressure can sharply increase, and Tunnel Second Lining vault is caused to come to nothing the illusion filled.Therefore,
If carrying out supplement grout injection control with direct characteristic index (Tunnel Second Lining thickness value), it will overcome to only rely on and indirectly control
Index (grouting pressure) judges whether to have filled secondary lining vault and comes to nothing the defect of method.
And currently used Tunnel Second Lining Thickness sensitivity technology, mainly damage drilling detection method and lossless geology thunder
Up to two kinds of detection method.Drilling detection method is damaged, implementation is cumbersome, causes secondary destruction to existing Tunnel Second Lining；And due to two
Secondary lining cutting supplement injection slurry solidification needs certain time, before supplementing injection slurry condensation cure, implements drilling and easily causes outside slurries
Stream cannot achieve the real-time detection of Tunnel Second Lining thickness during supplement slip casting.Lossless GPR detection method, though can gram
Clothes damage the outer flow problem of slurries caused by drilling detection method, but since geological radar electromagnetic wave signal is very quick to water and air
The reason of sense, the Tunnel Second Linings such as usually only supplement injection slurry it is completely dry after can accurately be examined (after usual two weeks)
It surveys.As it can be seen that currently used two kinds of existing Tunnel Second Lining thickness detecting methods, not competent Tunnel Second Lining supplement
The task of slip casting thickness real-time detection.
Meanwhile geological radar is when detecting Tunnel Second Lining, in order to penetrate the metal materials such as steel arch-shelf and reinforced mesh,
Generally use weight and bulky low-frequency antenna, operating difficulties in detection process.Georadar Data processing lag, Wu Fashi
Thickness sensitivity when real；And it is high to the competency profiling of detection operator, it need to could be competent at detection work by professional training personnel
Make.Another GPR detection uses electromagnetic wave, easily generates harm to operator's health.
Summary of the invention
The main purpose of the present invention is to provide Tunnel Second Linings to supplement slip casting thickness detecting equipment, to overcome existing side
Method is unable to real-time detection Tunnel Second Lining supplement slip casting thickness and geological radar the problem of being also easy to produce hazards of electromagnetic radiation.
To achieve the goals above, the one aspect of specific embodiment according to the present invention, it is secondary to provide a kind of tunnel
Lining cutting supplements slip casting thickness detecting equipment, including supersonic generator, ultrasonic wave transmitting probe, ultrasonic wave receiving transducer, ultrasound
Wave receiver, data processing system and power supply device；
The supersonic generator is connect with ultrasonic wave transmitting probe, the ultrasonic pulse of the supersonic generator output
Signal, driving ultrasonic wave transmitting probe issue ultrasonic wave；
The ultrasonic wave receiving transducer is connect with ultrasonic receiver, and the ultrasonic wave receiving transducer receives reflected
Ultrasonic signal is converted into electric signal input ultrasonic receiver；
The data processing system is connect with supersonic generator and ultrasonic receiver, and control supersonic generator passes through
Ultrasonic wave transmitting probe issues ultrasonic signal, and receives the electric signal of ultrasonic receiver output；
The power supply device provides power supply for equipment.
Further, the data processing system includes DSP, reservoir and touch screen.
Further, the reservoir is card insert type reservoir.
Further, the equipment further includes lighting device, and the lighting device is connect with power supply device.
Further, the equipment is integrated portable construction.
Further, the power supply device include battery and and control circuit, the battery it is electric by the control
Road is powered and charges.
Further, the power supply device uses external-hanging structure, is equipment power supply by card slot contact.
Further, the ultrasonic wave transmitting probe and ultrasonic wave receiving transducer are packaged together, and pass through Air Coupling knot
Structure emits ultrasonic wave and receives ultrasonic wave.
Further, the Air Coupling structure is Air Coupling protective film.
Further, the ultrasonic wave receiving transducer includes preamplifier, the letter of the ultrasonic wave receiving transducer output
Number by preamplifier amplify shaping after input ultrasonic receiver.
The invention has the advantages that can satisfy the requirement of Tunnel Second Lining supplement slip casting thickness real-time detection,
During Tunnel Second Lining supplements mortar depositing construction, secondary lining thickness is easily detected in real time.Further, the present invention also has
There is portable, easy to operate, safety and environmental protection, generate the characteristics of hazards of electromagnetic radiation to operator.
The present invention is described further with reference to the accompanying drawings and detailed description.The additional aspect of the present invention and excellent
Point will be set forth in part in the description, and partially will become apparent from the description below, or practice through the invention
It solves.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, specific implementation of the invention
Mode, illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.
Fig. 1 is that the Tunnel Second Lining of embodiment supplements slip casting thickness detecting equipment structural schematic diagram.
Fig. 2 is that the Tunnel Second Lining of embodiment supplements slip casting thickness detecting equipment entity appearance schematic diagram.
In attached drawing:
1 is ultrasonic wave Air Coupling protecting film；
Structure based on 100；
9 be power supply device；
13 be forward handle；
14 be main handle；
15 be ultrasonic wave emission switch.
Specific embodiment
It should be noted that in the absence of conflict, specific embodiment, embodiment in the application and therein
Feature can be combined with each other.It lets us now refer to the figures and combines the following contents the present invention will be described in detail.
In order to make those skilled in the art better understand the present invention program, below in conjunction with specific embodiment party of the present invention
Attached drawing in formula, embodiment carries out clear, complete description to the technical solution in the specific embodiment of the invention, embodiment,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Specific embodiment, embodiment, those of ordinary skill in the art institute obtained without making creative work
There are other embodiments, embodiment, should fall within the scope of the present invention.
Tunnel Second Lining of the invention supplements slip casting thickness detecting equipment, by main structure 100 and power supply device 9 two
Divide and constitute, as shown in Figure 1.
Main structure 100 includes supersonic generator, ultrasonic wave transmitting probe, ultrasonic wave receiving transducer, ultrasonic wave reception
Device, data processing system.
Power supply device 9 uses external-hanging structure, is powered by structure 100 based on card slot contact.Power supply device 9 includes electric power storage
Pond and with control circuit (not shown in figure 1), battery is powered and charged by control circuit.
In main structure 100:
Supersonic generator is connect with ultrasonic wave transmitting probe, the ultrasonic wave electric impulse signal of supersonic generator output,
The energy converter of ultrasonic wave transmitting probe is driven to issue ultrasonic wave.
Ultrasonic wave receiving transducer is connect with ultrasonic receiver, and ultrasonic wave receiving transducer receives reflected ultrasonic wave letter
Number, ultrasonic signal is converted to by electric signal by the energy converter in receiving transducer and inputs ultrasonic receiver.
Data processing system is connect with supersonic generator and ultrasonic receiver, and control supersonic generator passes through ultrasound
Wave transmitting probe issues ultrasonic signal, and receives the electric signal of ultrasonic receiver output.
Embodiment
This example is a kind of integrated portable Tunnel Second Lining supplement slip casting thickness detecting equipment, uses the ultrasonic thickness of convolution
Detection technique is spent, the problem of conventional radar Electromagnetic Wave Detection causes detection to lag water sensitive is overcome.It overcomes simultaneously existing
The problem of technology Tunnel Second Lining supplement slip casting Thickness sensitivity is unable to real-time online detection carries out secondary lining supplement in tunnel
When mortar depositing construction, real-time online detection can be carried out, provides effective support for project progress and quality control.
This example thickness detecting equipment is a kind of mancarried device, and shape is gun shaped structure, electric with commonly impacting in engineering
The shapes such as brill are very close, as shown in Figure 2.
This example ultrasonic wave transmitting probe and ultrasonic wave receiving transducer are packaged together, and constitute ultrasonic probe, pass through air
Coupled structure emits ultrasonic wave and receives ultrasonic wave.
The 0.12M20NR03 Air Coupling ultrasonic wave that this example ultrasonic probe is produced using Japan Probe company
Probe.The ultrasonic frequency of transmitting is 0.12MHz, and sample frequency 5MHz, the incident angle of selection is 3 °.
This example Air Coupling structure uses Air Coupling protective film 1, as shown in Figure 2.
This example ultrasonic wave receiving transducer further includes preamplifier, and the signal for exporting ultrasonic wave receiving transducer carries out
Shaping and amplification, the signal after preamplifier amplifies shaping input ultrasonic receiver.
This Air Coupling ultrasonic detection technology of this example is non-contact type ultrasonic detection technique, overcomes tradition and connect
Touch ultrasound examination speed is slow and to the demanding defect of measured surface planarization, can be competent at Tunnel Second Lining supplement note
Rugged environment when slurry construction real-time detection.
In general, Tunnel Second Lining supplement mortar depositing construction is carried out when Tunnel Engineering has not been completed, secondary lining
Block supplement mortar depositing construction detection faces are uneven, and contact measurement is extremely difficult, or even can seriously affect detection accuracy, and this example is adopted
With non-contact Air Coupling ultrasonic detection technology, the above problem and difficulty are overcome completely, and detection efficiency and precision obtain
Guarantee.
This example ultrasonic transmitter can emit large power supersonic burst signal, can penetrate ultrasonic wave transmitting probe
Air between detected body.
It is installed on the ultrasonic air coupling protecting film of ultrasonic probe front end, it can be under conditions of not weakening ultrasonic signal
Protect Air Coupling ultrasonic wave transmitting probe and receiving transducer, and can in use according to abrasion pollution level in time more
It changes, to adapt to severe working environment during Tunnel Second Lining supplement mortar depositing construction.
This example data processing system includes DSP (digital signal processor), reservoir and touch screen.
This example reservoir uses card insert type bulk storage, can manually take out, data are exported to computer, convenient
Later data is handled through a step analysis.
Using touch screen, keyboard button the space occupied size is saved, portable Tunnel Second Lining is significantly reduced
Supplement the outer dimension of slip casting thickness care testing device.
A key stop push-button is provided on this example touch screen, for allowed at any time in operator's detection process detection device also
Original arrives initial setting up parameter state.
This example Tunnel Second Lining supplements slip casting thickness detecting equipment, and in order to facilitate the operation of setting, there are two handles, preposition
Handle 13 and main handle 14 use ergonomic designs, facilitate operator's hand-held in operating process, as shown in Figure 2.
This example power supply device 9 uses high-power battery, and is connect by slot with main structure 100, is easily changed,
It can satisfy the needs of equipment continuous work.
For the ease of night or in the tunnel operations of insufficient light, this example Tunnel Second Lining supplement slip casting Thickness sensitivity is set
Standby to be provided with lighting device, lighting device is connect with power supply device, can pass through lighting demand for operator.
Specific implementation process of the present invention are as follows: plug in device 9, turns on the power switch (not shown), makes portable
Tunnel Second Lining supplement slip casting thickness care testing device is in preparation state.It presses lower lighting device button and opens illumination
Device, then operator's left hand holds forward handle 13, and the right hand holds main handle 14, and it is thick that alignment will detect tunnel double-lining lining cutting
The position of degree prepares Tunnel Second Lining Thickness sensitivity.
Referring to Fig. 2, ultrasonic wave emission switch 15 is pressed, ultrasonic wave emits the ultrasonic pulse signal string of generator output,
Ultrasonic wave is converted to through the transmitting spy of Air Coupling ultrasonic wave to emit.Ultrasonic wave is after Tunnel Second Lining reflects, by air
Coupling ultrasonic wave receiving transducer receives and is converted into pulse electrical signal, amplifies through preamplifier and reaches with after shaping
Ultrasonic receiver.It is secondary to be translated into tunnel into digital signal processor processes analysis is crossed for the ultrasonic signal received
Lining thickness data, and be automatically saved in Large Volume Data reservoir, while being output to touch screen and being shown on the spot, for existing
Field operator implements to understand slip casting degree and whether the thickness of Tunnel Second Lining has reached design requirement.
Further analysis if you need to carry out data is handled, the detection data that can will be stored in large capacity data memory,
Computer is exported to, post analysis processing is carried out.
When encountering not enough power supply situation in the detection process, external power supply unit 9 can be replaced at any time, to guarantee that it continues
Detection operation.
Claims (10)
1. Tunnel Second Lining supplements slip casting thickness detecting equipment, including supersonic generator, ultrasonic wave transmitting probe, ultrasonic wave
Receiving transducer, ultrasonic receiver, data processing system and power supply device；
The supersonic generator is connect with ultrasonic wave transmitting probe, the ultrasonic pulse letter of the supersonic generator output
Number, driving ultrasonic wave transmitting probe issues ultrasonic wave；
The ultrasonic wave receiving transducer is connect with ultrasonic receiver, and the ultrasonic wave receiving transducer receives reflected ultrasound
Wave signal is converted into electric signal input ultrasonic receiver；
The data processing system is connect with supersonic generator and ultrasonic receiver, and control supersonic generator passes through ultrasound
Wave transmitting probe issues ultrasonic signal, and receives the electric signal of ultrasonic receiver output；
The power supply device provides power supply for equipment.
2. Tunnel Second Lining according to claim 1 supplements slip casting thickness detecting equipment, which is characterized in that the data
Processing system includes DSP, reservoir and touch screen.
3. Tunnel Second Lining according to claim 2 supplements slip casting thickness detecting equipment, which is characterized in that the storage
Device is card insert type reservoir.
4. Tunnel Second Lining according to claim 1 supplements slip casting thickness detecting equipment, which is characterized in that the equipment
It further include lighting device, the lighting device is connect with power supply device.
5. Tunnel Second Lining described in any one supplements slip casting thickness detecting equipment according to claim 1~4, feature exists
In the equipment is integrated portable construction.
6. Tunnel Second Lining according to claim 5 supplements slip casting thickness detecting equipment, which is characterized in that the power supply
Device includes battery and is powered and charges by the control circuit with control circuit, the battery.
7. Tunnel Second Lining according to claim 6 supplements slip casting thickness detecting equipment, which is characterized in that the power supply
Device uses external-hanging structure, is equipment power supply by card slot contact.
8. Tunnel Second Lining according to claim 5 supplements slip casting thickness detecting equipment, which is characterized in that the ultrasound
Wave transmitting probe and ultrasonic wave receiving transducer are packaged together, and emit ultrasonic wave by Air Coupling structure and receive ultrasonic wave.
9. Tunnel Second Lining according to claim 8 supplements slip casting thickness detecting equipment, which is characterized in that the air
Coupled structure is Air Coupling protective film.
10. Tunnel Second Lining according to claim 9 supplements slip casting thickness detecting equipment, which is characterized in that described super
Acoustic receiver probe includes preamplifier, and the signal of the ultrasonic wave receiving transducer output amplifies shaping by preamplifier
After input ultrasonic receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391714.4A CN109405776A (en) | 2018-11-21 | 2018-11-21 | Tunnel Second Lining supplements slip casting thickness detecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391714.4A CN109405776A (en) | 2018-11-21 | 2018-11-21 | Tunnel Second Lining supplements slip casting thickness detecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109405776A true CN109405776A (en) | 2019-03-01 |
Family
ID=65474553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391714.4A Pending CN109405776A (en) | 2018-11-21 | 2018-11-21 | Tunnel Second Lining supplements slip casting thickness detecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109405776A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455915A (en) * | 2019-08-09 | 2019-11-15 | 西南交通大学 | Tunnel Second Lining supplements grouting method |
| CN111595944A (en) * | 2020-06-02 | 2020-08-28 | 中国铁建重工集团股份有限公司 | Real-time detection method for compactness of perfusion vault |
| CN112127918A (en) * | 2020-09-28 | 2020-12-25 | 扬中市南方矿用电器有限公司 | Intelligent control device and control method for mine grouting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002055089A (en) * | 2000-08-10 | 2002-02-20 | Mitsubishi Electric Corp | Apparatus and method for diagnosing of tunnel |
| CN101021412A (en) * | 2007-03-12 | 2007-08-22 | 韩其华 | Automatic detecting method for lining section thickness and tunnel forming machine for realizing the same method |
| CN102507905A (en) * | 2011-11-15 | 2012-06-20 | 重庆大学 | Test method for detecting interlayer-containing salt cavity expansion process by using ultrasound wave |
| CN106441177A (en) * | 2016-11-03 | 2017-02-22 | 北京声华兴业科技有限公司 | A method and device for measuring the thickness of a workpiece in a manner of being capable of passing through coating |
| CN209263915U (en) * | 2018-11-21 | 2019-08-16 | 西南交通大学 | Tunnel Second Lining supplements slip casting thickness detecting equipment |
-
2018
- 2018-11-21 CN CN201811391714.4A patent/CN109405776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002055089A (en) * | 2000-08-10 | 2002-02-20 | Mitsubishi Electric Corp | Apparatus and method for diagnosing of tunnel |
| CN101021412A (en) * | 2007-03-12 | 2007-08-22 | 韩其华 | Automatic detecting method for lining section thickness and tunnel forming machine for realizing the same method |
| CN102507905A (en) * | 2011-11-15 | 2012-06-20 | 重庆大学 | Test method for detecting interlayer-containing salt cavity expansion process by using ultrasound wave |
| CN106441177A (en) * | 2016-11-03 | 2017-02-22 | 北京声华兴业科技有限公司 | A method and device for measuring the thickness of a workpiece in a manner of being capable of passing through coating |
| CN209263915U (en) * | 2018-11-21 | 2019-08-16 | 西南交通大学 | Tunnel Second Lining supplements slip casting thickness detecting equipment |
Non-Patent Citations (2)
| Title |
|---|
| 余洋等: "《隧道施工质量控制要点解析》", 30 September 2014 * |
| 民航无损检测人员资格鉴定与认证委员会: "《航空器超声检测》", 30 April 2009, 中国民航出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455915A (en) * | 2019-08-09 | 2019-11-15 | 西南交通大学 | Tunnel Second Lining supplements grouting method |
| CN111595944A (en) * | 2020-06-02 | 2020-08-28 | 中国铁建重工集团股份有限公司 | Real-time detection method for compactness of perfusion vault |
| CN112127918A (en) * | 2020-09-28 | 2020-12-25 | 扬中市南方矿用电器有限公司 | Intelligent control device and control method for mine grouting equipment |
| CN112127918B (en) * | 2020-09-28 | 2024-06-04 | 扬中市南方矿用电器有限公司 | Intelligent control device and control method for mine grouting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109405776A (en) | Tunnel Second Lining supplements slip casting thickness detecting equipment | |
| CN105974465B (en) | Tunnel dimensionally seismic wave forward probe spatial observation System and method for | |
| CN103646527A (en) | Automatic monitoring and early-warning system and method for monitoring and measuring interior of tunnel | |
| CN209263915U (en) | Tunnel Second Lining supplements slip casting thickness detecting equipment | |
| CN111273340A (en) | Method for forecasting geology of tunnel along with mining in advance | |
| CN203515559U (en) | Oil-gas well liquid level depth testing device | |
| CN203659190U (en) | Automatic monitoring and pre-warning system for monitoring measurement in tunnel | |
| CN203716957U (en) | Subsonic wave water source well liquid level tester | |
| CN203337830U (en) | Monitoring device using tunnel face blasting as seismic source | |
| CN105758509A (en) | Field measurement method for sound velocity of surface mine rock mass | |
| CN110242287A (en) | A kind of Tunneling by mining method perforation hole size scalability detection device and application method | |
| CN210427458U (en) | Ultrasonic receiving and transmitting processing module and ultrasonic detector | |
| CN207662398U (en) | A kind of civil engineering measuring instrument | |
| KR100773302B1 (en) | Borehole ultrasonic system for measuring the volumes of cavities | |
| CN208255099U (en) | A kind of void detector | |
| CN204646222U (en) | A kind of oil well liquid level position remote measuring unit | |
| CN111964617A (en) | Portable concrete thickness measuring device | |
| CN204989465U (en) | A ultrasonic ranging equipment for tunnel | |
| CN109030284A (en) | A kind of ultrasonic wave identification device and method of filling pipeline plugging | |
| TW201640112A (en) | Automated concrete abnormality testing system and method | |
| CN209387587U (en) | A kind of geological exploration device that can precisely detect rock fracture | |
| CN105891808B (en) | A kind of acoustic emission apparatus of Multi-target position | |
| CN109975818A (en) | A kind of comprehensive gaging hole robot of geology rock mass | |
| CN105737771B (en) | A kind of effective ultrasonic wave thickness measuring probe of metal and the effective ultrasonic thickness measurement method of metal | |
| CN205940558U (en) | Stake point positioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190301 |
|
| RJ01 | Rejection of invention patent application after publication |