CN1948902A - Deformation moritoring method for tunnel like engineering and apparatus thereof - Google Patents
Deformation moritoring method for tunnel like engineering and apparatus thereof Download PDFInfo
- Publication number
- CN1948902A CN1948902A CN 200610019741 CN200610019741A CN1948902A CN 1948902 A CN1948902 A CN 1948902A CN 200610019741 CN200610019741 CN 200610019741 CN 200610019741 A CN200610019741 A CN 200610019741A CN 1948902 A CN1948902 A CN 1948902A
- Authority
- CN
- China
- Prior art keywords
- deformation
- tunnel
- data
- engineering
- survey line
- 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.)
- Granted
Links
Images
Abstract
The invention discloses tunnel series engineering deformation monitoring method and device. It relates to geotechnical engineering deformation monitoring which uses computer collecting and transmitting for monitoring data to process digitalization monitoring for underground hidden project hole body deformation. The device include deformation gauge, testing base, displacement transducer, data transmission line, data collecting machine, and PC computer. The invention can be used in rock mass deformation real time monitoring, geotechnical engineering deformation monitoring such as pit excavation, underground mine exploitation etc.
Description
Technical field
The present invention relates to the Geotechnical Engineering deformation monitoring, relate in particular to tunnel-like (comprising tunnel, solution cavity, roadway etc.) engineering project deformation monitoring method and device thereof.Specifically, it mainly is real-time monitoring at the distortion of the tunnel like engineering under the complicated construction condition, highlight that survey line can disconnect at any time in the construction, closed advantage, adopt computer acquisition, the transmission method of Monitoring Data, carry out the digital monitoring of underground concealed engineering hole body deformability.
Background technology
The ground deformation monitoring is the important component part of Geotechnical Engineering, and various monitoring measures has been widely used in the distortion of tunnel like engineering of mine, railway, highway, water conservancy etc.Along with the increasing of highway, high-speed railway, energy project construction and development of the West Regions dynamics, China's infrastructure construction is in the ascendant.It is increasing wherein to relate to tunnel like engineering, but attempts to predict the basal conditions of rock soil mass exactly and in construction, the suitable difficulty of variation in the operational process in project engineering stage.Engineering practice shows: through effective monitoring means of engineering construction, operation overall process field monitoring to the actual state of Geotechnical Engineering and stability thereof, become important means indispensable in engineering survey, design, construction and the operational process.
(rod-type boring multipoint displacement meter is used for accurately measuring the length travel of rock mass and concrete boring to CDJ-II type rod-type boring multipoint displacement meter.) in two beaches power station Tunnel Engineering and the monitoring of high slope engineering site, obtained successful application, obtain in the surface of surrounding rock of chamber and rock slope and rate of displacement, displacement and the rock mass thereof of inner different depth each point the radially regularity of distribution of displacement on time and space, set up the mutual relationship of surrounding rock of chamber displacement and construction drilling depth.
The comprehensive utilization convergence gauge (convergence gauge mainly by a dish on spool, the test steel ruler that has a punching hole forms, spool is fixed on the instrument frame.) and multipoint displacement meter (multiple spot drilling displacement meter is used for accurately measuring the axial deformation of rock mass and concrete bodies internal drilling.) can test the variation of rock mass surface and internal displacement, the direct rule of reflection ground pressure activity, adopt with understanding roadway surrounding rock in digging process deformation rule and tau-effect and tunnel stability of surrounding rock production phase carried out having played key effect in the effective prediction.
But, adopt traditional convergence gauge and multipoint displacement meter to monitor to the distortion of hole body itself and surrounding rock body, can influence construction operation inevitably, and survey line is easy to wreck in work progress.
In addition, mechanical anchor formula or the on-the-spot difficulty of installing of grouting formula multipoint displacement meter; Difference resistance formula multipoint displacement meter will be because temperature variation will bring the sluggishness of change in displacement and temperature to float.
Based on the singularity of the characteristics of present monitoring rock and soil engineering and the monitoring of hole body engineering project deformation, research is applicable under construction or the operation condition that deformation moritoring method for tunnel like engineering and device thereof have important engineering application value.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the above-mentioned shortcoming and defect that prior art exists, a kind of deformation moritoring method for tunnel like engineering and device thereof to be provided.
The object of the present invention is achieved like this:
One, the method for tunnel like engineering deformation monitoring
This method comprises the following steps:
1. straight line boring is carried out in monitored monitoring point, section two side;
2. survey line is the stainless steel wire that a kind of male and female clasp is connected, and survey line one end points is fixed on a sidewall measuring point place with expansion wood, and the other end of survey line is walked around another sidewall measuring point place by the fixing fixed block of wood that expands;
3. on the fixed block sidewall, will test pedestal and fix, adjust the turn handle, adjustable pulley will be put appropriate position, survey line will be laid out, and make it keep vertical and rate of tension with weight with setscrew;
4. card silk shaft collar is installed on the survey line between adjustable pulley and the weight, and the chucking position on making a card shaft collar and testing pedestal is corresponding;
5. the rod-pulling type displacement transducer is installed on the anchor clamps of test pedestal, the flexible gauge head of sensor places on the card silk shaft collar, by adjusting the sensing station setting sensor initial value on the anchor clamps;
6. import the data of displacement transducer into data collecting instrument with data line, data collecting instrument is connected into computing machine by computer bus;
7. utilize collection, transmission, demonstration and the record of computer regulating hole body deformability information.
Two, tunnel-like deformation monitoring device
As Fig. 1, Fig. 2, this device comprises deformation gauge 1, test pedestal 2, displacement transducer 3, data line 4, data collecting instrument 5, the PC computing machine 6 that connects successively.
1, deformation gauge
The first expansion wood 1.1 and second is set respectively in the boring 0 of two side, tunnel expands wooden 1.6; Survey line 1.2 1 ends connect the first expansion wood 1.1, and the other end is walked around and second expansion wood 1.6 fixed blocks that are connected 1.5 and the adjustable pulley 2.1 successively, is connected with weight 1.8 again;
Card silk shaft collar 1.7 places on the survey line 1.2 between adjustable pulley 2.1 and the weight 1.8.
2, test pedestal
Adjustable pulley 2.1, turn handle 2.2, sensor anchor clamps 2.3 all are arranged on the pedestal 2.4; Turn handle 2.2 can be controlled any pivot angle of adjustable pulley 2.1, and anchor clamps 2.3 are used for clamping displacement transducer 3.
3, displacement transducer
4, data line
5, data collecting instrument
6, the PC computing machine 6
This device principle of work:
Utilize to expand the expansion characteristics of wood with stainless steel wire survey line and borehole wall relative fixed firmly, and survey line is stressed by the certain rate of tension of weight maintenance, and the stroke of survey line has been represented the deflection of the hole body of surveying.Specifically, tunnel, solution cavity, roadway etc. if place the displacement transducer reading on the card silk shaft collar to increase, show that then hole shape shrinks distortion in construction or operation process; In like manner, if the displacement transducer reading reduces, show that then hole shape expands distortion.The displacement transducer reading that deflection is gathered, write down by data collecting instrument obtains.
Whole process has realized in the real-time deformation monitoring that does not influence under construction and the operation condition.
Through on-the-spot test, the technical indicator of this device is as follows:
Sensitivity: 0.06mm; Range: 60mm;
Power supply: 12V; Working temperature: 0 ℃～50 ℃;
Test channel number: 8; Sample frequency: 100kHz.
The present invention has the following advantages and good effect:
1. in observation process, can monitor the distortion that is captured in ground hole body under the complex working condition condition in real time.
2. in work progress, can disconnect survey line, can connect survey line once more after construction finishes, continue monitoring, not hinder construction; This is particularly important to the underground of complicated construction condition and hole, face of land body engineering.
3. this device to test principle is directly perceived, simple in structure, precision is high, good stability, easy operating, convenient disassembly, and the installation testing personnel are not had very strong technical requirement.
4. this device can transmit the Monitoring Data of gathering, and realizes the purpose of the remote monitoring of distortion, thereby saves human and material resources and financial resources effectively.
5. the present invention not only has significant advantage to the deformation monitoring of hole body in construction and the operation process under the complex conditions, also can apply to the Geotechnical Engineering deformation monitoring field of excavation of foundation pit, underground mine exploitation etc.
Description of drawings
Fig. 1-this device is formed block scheme;
Fig. 2-this device assembly construction synoptic diagram;
A data gatherer process figure of Fig. 3-simulating signal.
Wherein:
0-boring;
The 1-deformation gauge,
1.1-the first expansion wood, the 1.2-survey line, 1.3-pin thread ring,
The wood 1.4-box ring, 1.5-fixed block, 1.6-second expand,
1.7-card silk shaft collar, the 1.8-weight;
2-tests pedestal,
2.1-adjustable pulley, 2.2-turn handle, 2.3-anchor clamps, 2.4-pedestal;
The 3-displacement transducer;
The 4-data line;
The 5-data collecting instrument;
5.1-multi-way switch, 5.2-A/D conversion chip, 5.3-data buffer;
The 6-PC computing machine,
6.1-computer bus, the 6.2-computing machine.
Embodiment
The present invention is further described below in conjunction with accompanying drawing and exemplifying embodiment:
One, this device is pressed Fig. 1, Fig. 2, Fig. 3 production, installation.
Two, each modular construction
1, survey line
As Fig. 2, insert pin thread ring 1.3 and box ring 1.4 in the middle of the survey line 1.2, pin thread ring 1.3 and box ring 1.4 disconnect when construction, fasten during test.
2, displacement transducer
Measurement range: 0～60mm (unidirectional); The linearity: ± 0.3%;
Sensitivity: 16.6mV/mm; Power supply: ± 12VDC;
Working temperature: 0 ℃～70 ℃; Physical dimension: 255mm * φ 21.4mm
3, data collecting instrument
Rod-pulling type displacement transducer 3 output signals are voltage analog signal, and needing through data collecting instrument 5 is analog signal conversion that digital signal deposits PC computing machine 6 in, is used for subsequent analysis.With the matching used data collecting instrument 5 of the type sensor are WS-5921D/U series data Acquisition Instruments, it is novel computer external A/D product, it is connected to USB interface of computer work, and can be sensor and provide ± the 12V power supply, volume is little, easy to use, be the optimal selection of notebook data acquisition, also be applicable to Desktop Computer.
Match the oval low-pass filter in program control 8 rank, program-controlled selection low-pass filtering cutoff frequency can suppress outside noise effectively and disturb.Data collecting instrument 5 is furnished with 7 core sockets and 2 core standard BNC sockets, can switch with switch, and removing to gather needs the sensor signal of power supply also can gather other signal that satisfies range.
Analog input channel: 16,32,64,128; Sample frequency: 100kHz;
Port number: 8; Press for bridge: ± 12V; Numeral I/O:1 road, the TTL electric screen;
Range: ± 10V; The linearity:＜0.01%FS; A/D resolution: 16;
Low-pass filter: the oval low-pass filter in 8 rank, program control filtering scope 10Hz～50kHz; Analog input socket: 7 core sockets; Computer interface: USB1.1;
Working temperature: 0～50 ℃; Power supply: AC220V/50Hz;
Data acquisition software: WS-DAQ data acquisition software;
Carry out the analog signal data collection by LabVIEW.
Three, simulating signal data gatherer process
A data gatherer process of simulating signal as shown in Figure 3.Data collecting instrument 5 becomes digital signal by multi-way switch 5.1, A/D conversion chip 5.2 and data buffer (Buffer) 5.3 several parts with multichannel analog signal conversion and is stored in the data buffer 5.3, and computing machine 6.2 is controlled the action of the several parts in the data Acquisition Instrument 5 by the data acquisition among the LabVIEW, realizes communication, swap data and control information by computer bus 6.1 between data collecting instrument 5 and the computing machine 6.2.
Claims (5)
1, a kind of deformation moritoring method for tunnel like engineering is characterized in that comprising the following steps:
1. straight line boring is carried out in monitored monitoring point, section two side;
2. survey line is the stainless steel wire that a kind of male and female clasp is connected, and survey line one end points is fixed on a sidewall measuring point place with expansion wood, and the other end of survey line is walked around another sidewall measuring point place by the fixing fixed block of wood that expands;
3. on the fixed block sidewall, will test pedestal and fix, adjust the turn handle, adjustable pulley will be put appropriate position, survey line will be laid out, and make it keep vertical and rate of tension with weight with setscrew;
4. card silk shaft collar is installed on the survey line between adjustable pulley and the weight, and the chucking position on making a card shaft collar and testing pedestal is corresponding;
5. the rod-pulling type displacement transducer is installed on the anchor clamps of test pedestal, the flexible gauge head of sensor places on the card silk shaft collar, by adjusting the sensing station setting sensor initial value on the anchor clamps;
6. import the data of displacement transducer into data collecting instrument with data line, data collecting instrument is connected into computing machine by computer bus;
7. utilize collection, transmission, demonstration and the record of computer regulating hole body deformability information.
2, a kind of tunnel like engineering deformation monitoring device is characterized in that comprising the deformation gauge (1), test pedestal (2), displacement transducer (3), data line (4), data collecting instrument (5), the PC computing machine (6) that connect successively;
Described (1) deformation gauge is to be provided with first respectively to expand wooden (1.1) and the second expansion wood (1.6) in the boring (0) of two side, tunnel; Survey line (1.2) one ends connect first and expand wooden (1.1), and the other end is walked around fixed block (1.5) and the adjustable pulley (2.1) that is connected with the second expansion wood (1.6) successively, is connected with weight (1.8) again; Card silk shaft collar (1.7) places the survey line (1.2) between adjustable pulley (2.1) and the weight (1.8);
Described test pedestal (2) is that adjustable pulley (2.1), turn handle (2.2), anchor clamps (2.3) all are arranged on the pedestal (2.4);
Described displacement transducer (3) is fixed on the anchor clamps (2.3);
Described data line (4) movable end gauge head places on the card silk shaft collar (1.7);
Described data collecting instrument (5) comprises multi-way switch (5.1), A/D conversion chip (5.2) and the data buffer (5.3) that connects successively;
Described PC computing machine (6) comprises interconnective computer bus (6.1) and computing machine (6.2).
3, by the described a kind of tunnel like engineering deformation monitoring device of claim 2, it is characterized in that:
Insert pin thread ring (1.3) and box ring (1.4) in the middle of the survey line (1.2).
4, by the described a kind of tunnel like engineering deformation monitoring device of claim 2, it is characterized in that:
Displacement transducer (3) is selected WAP-30 rod-pulling type sensor for use.
5, by the described a kind of tunnel like engineering deformation monitoring device of claim 2, it is characterized in that:
Data collecting instrument (5) is selected AP-5921D/U60108-F type data collecting instrument for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610019741XA CN100442013C (en) | 2006-07-28 | 2006-07-28 | Deformation moritoring method for tunnel like engineering and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610019741XA CN100442013C (en) | 2006-07-28 | 2006-07-28 | Deformation moritoring method for tunnel like engineering and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1948902A true CN1948902A (en) | 2007-04-18 |
| CN100442013C CN100442013C (en) | 2008-12-10 |
Family
ID=38018484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610019741XA Expired - Fee Related CN100442013C (en) | 2006-07-28 | 2006-07-28 | Deformation moritoring method for tunnel like engineering and apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100442013C (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246100B (en) * | 2007-11-14 | 2010-09-01 | 中国科学院武汉岩土力学研究所 | Deep borehole rock deformation testing device |
| CN102021919A (en) * | 2010-12-09 | 2011-04-20 | 东南大学 | Foundation pit wireless monitoring and alarming device and monitoring method |
| CN102467118A (en) * | 2010-11-10 | 2012-05-23 | 上海市电力公司 | System for monitoring safe operation of power tunnel |
| CN102620708A (en) * | 2012-04-17 | 2012-08-01 | 南京工业大学 | Method and device for detecting high-altitude concealed building member deformation field |
| CN102829712A (en) * | 2012-08-27 | 2012-12-19 | 中国建筑第六工程局有限公司 | Device for monitoring internal deformation and humidity of rock-soil body |
| CN103344169A (en) * | 2013-08-02 | 2013-10-09 | 杨浩 | Expanded equal effect method convergence gauge deformation monitoring method |
| CN103669366A (en) * | 2013-01-24 | 2014-03-26 | 辽宁工程技术大学 | Remote monitoring early warning system for deep foundation pit support structure deformation |
| CN103759698A (en) * | 2014-01-16 | 2014-04-30 | 浙江大学 | System and method for fast measuring perimeter deformation quantity of horizontal type strain strengthening vessel |
| CN103954197A (en) * | 2014-05-05 | 2014-07-30 | 中国矿业大学 | Roadway surface displacement and deep displacement same-position measurement method |
| CN104931006A (en) * | 2015-05-05 | 2015-09-23 | 中国矿业大学 | Device of dynamically monitoring surrounding rock deformation of filled tunnel |
| CN106643408A (en) * | 2016-11-25 | 2017-05-10 | 中冶建筑研究总院有限公司 | Horizontal displacement measuring device |
| CN108801167A (en) * | 2018-06-08 | 2018-11-13 | 湖南科技大学 | A kind of non-uniformly convergent monitoring device of roadway full-fracture-surfacanchoring-rod and monitoring method |
| CN110595367A (en) * | 2019-09-26 | 2019-12-20 | 上海勘察设计研究院(集团)有限公司 | Method for finely detecting deformation and displacement of existing tunnel structure |
| CN110672018A (en) * | 2019-11-18 | 2020-01-10 | 车志敏 | Underground works is with exploitation tunnel rock stratum displacement monitoring devices |
| CN110954053A (en) * | 2019-11-18 | 2020-04-03 | 同济大学 | Tunnel model surrounding rock internal displacement monitoring test platform |
| CN113551637A (en) * | 2021-06-09 | 2021-10-26 | 长江勘测规划设计研究有限责任公司 | Monitoring device and method for surrounding rock deformation in whole process of tunnel construction based on TBM |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001348856A (en) * | 2000-06-09 | 2001-12-21 | Natl Inst Of Advanced Industrial Science & Technology Meti | Method of evaluating reinforcing effect on discontinuous face of bedrock |
| US6402707B1 (en) * | 2000-06-28 | 2002-06-11 | Denupp Corporation Bvi | Method and system for real time intra-orally acquiring and registering three-dimensional measurements and images of intra-oral objects and features |
| CN2662199Y (en) * | 2003-10-31 | 2004-12-08 | 吴晓铭 | Electronic settling monitoring instrument |
| CN1554924A (en) * | 2003-12-24 | 2004-12-15 | 中国科学院武汉岩土力学研究所 | Non-contact convergent monitoring method for underground cave and tunnel |
| JP4690030B2 (en) * | 2004-12-22 | 2011-06-01 | 前田建設工業株式会社 | Tunnel air displacement measurement system and tunnel air displacement measurement method |
| CN2938029Y (en) * | 2006-07-28 | 2007-08-22 | 中国科学院武汉岩土力学研究所 | Device for monitoring tunnel type engineering deformation |
-
2006
- 2006-07-28 CN CNB200610019741XA patent/CN100442013C/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101246100B (en) * | 2007-11-14 | 2010-09-01 | 中国科学院武汉岩土力学研究所 | Deep borehole rock deformation testing device |
| CN102467118A (en) * | 2010-11-10 | 2012-05-23 | 上海市电力公司 | System for monitoring safe operation of power tunnel |
| CN102467118B (en) * | 2010-11-10 | 2016-08-17 | 上海市电力公司 | A kind of system for monitoring safe operation of power tunnel |
| CN102021919A (en) * | 2010-12-09 | 2011-04-20 | 东南大学 | Foundation pit wireless monitoring and alarming device and monitoring method |
| CN102620708A (en) * | 2012-04-17 | 2012-08-01 | 南京工业大学 | Method and device for detecting high-altitude concealed building member deformation field |
| CN102829712A (en) * | 2012-08-27 | 2012-12-19 | 中国建筑第六工程局有限公司 | Device for monitoring internal deformation and humidity of rock-soil body |
| CN103669366A (en) * | 2013-01-24 | 2014-03-26 | 辽宁工程技术大学 | Remote monitoring early warning system for deep foundation pit support structure deformation |
| CN103344169B (en) * | 2013-08-02 | 2015-09-09 | 杨浩 | The method for monitoring deformation of convergence meter by equivalent method of expansion |
| CN103344169A (en) * | 2013-08-02 | 2013-10-09 | 杨浩 | Expanded equal effect method convergence gauge deformation monitoring method |
| CN103759698A (en) * | 2014-01-16 | 2014-04-30 | 浙江大学 | System and method for fast measuring perimeter deformation quantity of horizontal type strain strengthening vessel |
| CN103759698B (en) * | 2014-01-16 | 2017-02-15 | 浙江大学 | System and method for fast measuring perimeter deformation quantity of horizontal type strain strengthening vessel |
| CN103954197A (en) * | 2014-05-05 | 2014-07-30 | 中国矿业大学 | Roadway surface displacement and deep displacement same-position measurement method |
| CN103954197B (en) * | 2014-05-05 | 2017-01-04 | 中国矿业大学 | A kind of lane surface displacement, deep displacement coordination measuring method |
| CN104931006A (en) * | 2015-05-05 | 2015-09-23 | 中国矿业大学 | Device of dynamically monitoring surrounding rock deformation of filled tunnel |
| CN106643408A (en) * | 2016-11-25 | 2017-05-10 | 中冶建筑研究总院有限公司 | Horizontal displacement measuring device |
| CN106643408B (en) * | 2016-11-25 | 2019-10-22 | 中冶建筑研究总院有限公司 | A kind of horizontal displacement measuring device |
| CN108801167A (en) * | 2018-06-08 | 2018-11-13 | 湖南科技大学 | A kind of non-uniformly convergent monitoring device of roadway full-fracture-surfacanchoring-rod and monitoring method |
| CN110595367A (en) * | 2019-09-26 | 2019-12-20 | 上海勘察设计研究院(集团)有限公司 | Method for finely detecting deformation and displacement of existing tunnel structure |
| CN110672018A (en) * | 2019-11-18 | 2020-01-10 | 车志敏 | Underground works is with exploitation tunnel rock stratum displacement monitoring devices |
| CN110954053A (en) * | 2019-11-18 | 2020-04-03 | 同济大学 | Tunnel model surrounding rock internal displacement monitoring test platform |
| CN110954053B (en) * | 2019-11-18 | 2021-03-30 | 同济大学 | Tunnel model surrounding rock internal displacement monitoring test platform |
| CN113551637A (en) * | 2021-06-09 | 2021-10-26 | 长江勘测规划设计研究有限责任公司 | Monitoring device and method for surrounding rock deformation in whole process of tunnel construction based on TBM |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100442013C (en) | 2008-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1948902A (en) | Deformation moritoring method for tunnel like engineering and apparatus thereof | |
| CN2938029Y (en) | Device for monitoring tunnel type engineering deformation | |
| CN108398292A (en) | A kind of dedicated drawing out soil equipment of construction Soil K+adsorption | |
| CN205120490U (en) | Geotechnique's type test piece tensile test load anchor clamps | |
| CN105334310B (en) | Rock sample electrical property feature test set and testing method under multi-scenarios method state | |
| CN203117060U (en) | Stratometer | |
| CN105424910B (en) | Device for measuring layered settlement of soil mass | |
| CN203965184U (en) | Built-in rotor segment soil sampler | |
| CN102445398A (en) | Simulation testing method of soft rock and hard soil mechanical characteristics | |
| CN202850009U (en) | Micro static penetrometer | |
| CN104790370A (en) | Static sounding type deep soil sampler | |
| CN102900064A (en) | Micro static force penetrometer | |
| CN110596461A (en) | Embedded digital intelligent drilling resistivity tester | |
| CN110118516B (en) | Method for measuring surface cracks of mining subsidence area | |
| CN109238804A (en) | A kind of dilatancy layer during similar model test material and application method with conductive characteristic | |
| CN205157557U (en) | Measuring device is subsided in soil body layering | |
| CN105422080B (en) | A kind of cementing strength testing device for well cementation | |
| CN204255945U (en) | The proving installation of the inner frost heaving amount of a kind of compacted soil | |
| CN102767366B (en) | High-resolution orientation resistivity side direction logging instrument and logging method | |
| CN204988572U (en) | Skin friction testing arrangement in prefabricated opening concrete pipe pile pile body | |
| CN110186780A (en) | A kind of high-precision borehole shear test apparatus and method | |
| CN213902455U (en) | Arch dam mesopore crack monitoring system | |
| CN206960147U (en) | A kind of spiral field layering silt dredging device | |
| CN210180968U (en) | Soil salinity survey device | |
| CN202770446U (en) | Quick anchoring convergence measuring point |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20140728 |
|
| EXPY | Termination of patent right or utility model |