CN100442013C - Deformation moritoring method for tunnel like engineering and apparatus thereof - Google Patents

Deformation moritoring method for tunnel like engineering and apparatus thereof Download PDF

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Publication number
CN100442013C
CN100442013C CNB200610019741XA CN200610019741A CN100442013C CN 100442013 C CN100442013 C CN 100442013C CN B200610019741X A CNB200610019741X A CN B200610019741XA CN 200610019741 A CN200610019741 A CN 200610019741A CN 100442013 C CN100442013 C CN 100442013C
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China
Prior art keywords
survey line
deformation
data
monitoring
pedestal
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CNB200610019741XA
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Chinese (zh)
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CN1948902A (en
Inventor
孟庆山
汪稔
孔令伟
罗强
谭捍华
胡明鉴
Original Assignee
中国科学院武汉岩土力学研究所
贵州省交通规划勘察设计研究院
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Priority to CNB200610019741XA priority Critical patent/CN100442013C/en
Publication of CN1948902A publication Critical patent/CN1948902A/en
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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

Deformation moritoring method for tunnel like engineering and device thereof
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
Deformation gauge 1 comprises: the first expansion wood 1.1, survey line 1.2, pin thread ring 1.3, box ring 1.4, fixed block 1.5, the second expansion wood 1.6, a card shaft collar 1.7 and weight 1.8;
The first expansion wood 1.1 and second is set respectively in the boring 0 of two side, tunnel expands wooden 1.6; The survey line 1.2 1 ends connection first expansion wood 1.1 inserts pin thread ring 1.3 and box rings 1.4 in the middle of the survey line 1.2, survey line 1.2 other ends are walked around and wooden 1.6 fixed blocks that are connected 1.5 of second expansion and adjustable pulley 2.1 successively, are 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.
Pin thread ring 1.3 and box ring 1.4 disconnect when construction, fasten during test.
2, test pedestal
Test pedestal 2 comprises: adjustable pulley 2.1, turn handle 2.2, anchor clamps 2.3 and pedestal 2.4;
Adjustable pulley 2.1, turn handle 2.2, 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
Displacement transducer 3 is fixed on the anchor clamps 2.3.
4, data line
Data line 4 movable end gauge heads place on the card silk shaft collar 1.7; Test data is imported record in the PC computing machine 6, storage into by data line 4 and data collecting instrument 5.
5, data collecting instrument
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.
6, the PC computing machine 6
PC computing machine 6 comprises interconnective computer bus 6.1 and computing machine 6.2.
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 the certain rate of tension of the logical weight maintenance of survey line is stressed, 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, displacement transducer
Displacement transducer 3 adopts WAP-30 rod-pulling type sensor, but the direct voltage output simulating signal connects data collecting instrument 5 and can become digital signal to this analog signal conversion, built-in circuit, direct voltage output analog quantity; Through being scaled the actual displacement amount.
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
2, data collecting instrument
Data collecting instrument 5 is selected AP-5921D/U60108-F for use.
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 ℃ of 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 (2)

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 deformation gauge (1) comprises that first expansion wood (1.1), the survey line (1.2), pin thread ring (1.3), box ring (1.4), fixed block (1.5), second expand wooden (1.6), block a shaft collar (1.7) and weight (1.8); Being provided with first in the boring (0) of two side, tunnel respectively expands wooden (1.1) and the second expansion wood (1.6); Survey line (1.2) one ends connect the first expansion wood (1.1), insert pin thread ring (1.3) and box ring (1.4) in the middle of the survey line (1.2), survey line (1.2) 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 on the survey line (1.2) between adjustable pulley (2.1) and the weight (1.8);
Described test pedestal (2) comprises adjustable pulley (2.1), turn handle (2.2), anchor clamps (2.3) and pedestal (2.4), and 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).
CNB200610019741XA 2006-07-28 2006-07-28 Deformation moritoring method for tunnel like engineering and apparatus thereof CN100442013C (en)

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Application Number Priority Date Filing Date Title
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CN100442013C true CN100442013C (en) 2008-12-10

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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
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
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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
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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
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
CN108801167B (en) * 2018-06-08 2020-03-24 湖南科技大学 Monitoring device and monitoring method for roadway full-section non-uniform convergence
CN110595367B (en) * 2019-09-26 2021-05-11 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
CN110954053B (en) * 2019-11-18 2021-03-30 同济大学 Tunnel model surrounding rock internal displacement monitoring test platform
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