CN2938029Y - Device for monitoring tunnel type engineering deformation - Google Patents

Abstract

The utility model discloses a deformation monitoring device for the tunnel (including the tunnel, the dissolved cavern, and the well lane and so on) projects, relating to the deformation monitoring in the geotechnical projects. Put concretely, the utility model is mainly used to real time monitor the deformation in the tunnel projects under the complicated construction conditions, to highlight the advantage that measuring lines can disconnect and connect at any time in the construction, to digitally monitor the deformation of the cave body in the underground hidden projects with the method of the computer collecting and transmitting the data in data monitoring. The utility model comprises a deformeter (1), a testing base (2), a displacement sensor (3), a data transmission line (4), a data acquisition instrument (5) and a PC computer (6), all of which are successively connected. The utility model can real time monitor the deformation of the rock mass under the complicated working conditions. The utility model not only has a remarkable advantage of monitoring the deformation of the cave body under the complicated conditions and in the running process but also can be used in the deformation monitoring field of geotechnical projects, such as excavating the foundation pits and exploiting the underground mines and so on.

Description

The tunnel like engineering deformation monitoring device

Technical field

The utility model relates to the Geotechnical Engineering deformation monitoring, relates in particular to tunnel-like (comprising tunnel, solution cavity, roadway etc.) engineering project deformation monitoring device.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 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

The purpose of this utility model is exactly in order to overcome the above-mentioned shortcoming and defect that prior art exists, a kind of tunnel like engineering deformation monitoring device to be provided.

The purpose of this utility model is achieved in that

As Fig. 1, Fig. 2, the utility model 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, 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; 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

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, 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

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.

The utility model 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 utlity model has following advantage 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. test philosophy 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. the Monitoring Data of gathering can be transmitted, realize the purpose of the remote monitoring of distortion, thereby save human and material resources and financial resources effectively.

5. not only descend the deformation monitoring of hole body in construction and the operation process to have significant advantage, also can apply to the Geotechnical Engineering deformation monitoring field of excavation of foundation pit, underground mine exploitation etc. complex conditions.

Description of drawings

Fig. 1-the utility model is formed block scheme;

Fig. 2-the utility model assembly structure 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

Below in conjunction with accompanying drawing and exemplifying embodiment the utility model is further specified:

One, the utility model 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

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

3, 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 ℃; 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 (4)

1, 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) 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).

2, by the described a kind of tunnel like engineering deformation monitoring device of claim 1, 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).

3, by the described a kind of tunnel like engineering deformation monitoring device of claim 1, it is characterized in that:

Displacement transducer (3) is selected WAP-30 rod-pulling type sensor for use.

4, by the described a kind of tunnel like engineering deformation monitoring device of claim 1, it is characterized in that:

Data collecting instrument (5) is selected AP-5921D/U60108-F type data collecting instrument for use.

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