CN204286291U - A kind of multipoint displacement meter for tunnel wall rock deformation monitoring - Google Patents
A kind of multipoint displacement meter for tunnel wall rock deformation monitoring Download PDFInfo
- Publication number
- CN204286291U CN204286291U CN201420741101.XU CN201420741101U CN204286291U CN 204286291 U CN204286291 U CN 204286291U CN 201420741101 U CN201420741101 U CN 201420741101U CN 204286291 U CN204286291 U CN 204286291U
- Authority
- CN
- China
- Prior art keywords
- steel strand
- strand wires
- casing
- displacement meter
- deformation monitoring
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of measuring equipment, be specifically related to a kind of multipoint displacement meter for tunnel wall rock deformation monitoring, be included in the casing that bottom is provided with opening, be evenly distributed with some steel strand wires in described casing and be provided with some fixed pulleys, one end of each steel strand wires is fixed on casing top, stretches out casing after the other end walks around fixed pulley respectively through opening; In described casing, steel strand wires are respectively arranged with strainometer, the outer one end of described steel strand wires casing is connected with anchoring element.Compared with traditional multipoint displacement meter, the utility model is pre-plugged outside hole, does not disturb constructing tunnel, can obtain the overall process displacement curve of the hole top girth rock caused by constructing tunnel; And the utility model degree of accuracy is high, least count can reach 0.02mm, and reading device by the impact of temperature and humidity, can not add up reading.
Description
Technical field
The utility model relates to a kind of measuring equipment, is specifically related to a kind of multipoint displacement meter for tunnel wall rock deformation monitoring.
Background technology
Along with greatly developing of China's communication, increasing vcehicular tunnel starts to build.At present, the core that vcehicular tunnel is built knows that theory is exactly " New Austrian Tunneling Method ", and monitoring measurement of wall rock, information feed back is to know that construction is again one of the main points of " New Austrian Tunneling Method ", and the therefore construction of vcehicular tunnel, the monitoring measurement carrying out country rock is most important.One of monitoring measurement content of tunnel surrounding is that internal displacement for surrounding rock measures, the change of internal displacement for surrounding rock directly reflects the Mechanical Form of country rock and support system, it can not only reflect internal displacement for surrounding rock situation, loosening area of surrounding rocks, adjoining rock stability effect after tunnel excavation or supporting, and provide reliable information and foundation for the back analysis of surrouding rock stress and mechanics parameter, at present, conventional instrument mainly contains various single-point or multipoint displacement meter, in addition, some other method utilizing convergence gauge etc. indirectly to measure internal displacement for surrounding rock is also had.There is following problem in measurement equipment or the method for above-mentioned various measurement internal displacement for surrounding rock: displacement meter cost high all to some extent, installs inconvenience; Complex structure, measures difficulty large; Measuring range is little, and measurement is counted limited with the degree of depth; And the simple sensor of structure, low precision, and measure inconvenience, error is also larger.The more important thing is that the data message of monitoring measurement obtains after tunnel excavation, monitoring information lags behind construction, the information of internal displacement for surrounding rock change is imperfect, and there is certain loss, and therefore tunnel surrounding internal displacement measures is a problem demanding prompt solution in constructing tunnel.
Utility model content
The purpose of this utility model is the defect that exists for prior art and deficiency, provide a kind of can pre-plugged, structure simple, measure easily for the multipoint displacement meter of tunnel wall rock deformation monitoring.
For achieving the above object, the utility model is by the following technical solutions: be included in the casing that bottom is provided with opening, be evenly distributed with some steel strand wires in described casing and be provided with some fixed pulleys, one end of each steel strand wires is fixed on casing top, stretches out casing after the other end walks around fixed pulley respectively through opening; In described casing, steel strand wires are respectively arranged with strainometer, the outer one end of described steel strand wires casing is connected with anchoring element.
Further, described steel strand wires one end in casing is also connected with dynamometer.
Further, the screw telescopic device for regulating steel strand wires level of tightness is also provided with between described steel strand wires and dynamometer.
Further, described casing outer openings place is provided with thread-protected tube, and described steel strand wires are in thread-protected tube.
Further, described thread-protected tube is pvc pipe.
Further, described casing inner opening place is also provided with has multichannel total pulley, and described each steel strand wires pass casing respectively by after slideways different on total pulley.
Further, the quantity of described steel strand wires, anchoring element is 5.
Compared with prior art, the utility model has following useful technique effect: by arranging steel strand wires in casing, and the one end outside steel strand wires casing arranges anchoring element, part in steel strand wires line casing arranges testing element, anchoring element is fixed on hole wall point Rock And Soil, when the rock mass generation vertical displacement of this position, change in displacement is passed to testing element by the steel strand wires by constant force by anchoring element, and then the change in displacement on the relative earth's surface of the rock can measuring this point.And steel strand wires of the present utility model and anchoring element can determine measuring point quantity according to needing of measuring, and precisely can determine loosening area of surrounding rocks, and burying underground of anchoring element are relatively simple; Compared with traditional multipoint displacement meter, the utility model is pre-plugged outside hole, does not disturb constructing tunnel, can obtain the overall process displacement curve of the hole top girth rock caused by constructing tunnel; And the utility model degree of accuracy is high, least count can reach 0.02mm, and reading device by the impact of temperature and humidity, can not add up reading.
Further, by arranging dynamometer, can monitor the degree of tautness of steel strand wires.
Further, by arranging screw telescopic device, can regulate the level of tightness of steel strand wires, preventing steel strand wires from coming off or the generation of relaxation cases.
Further, by arranging thread-protected tube, reducing the impact that steel strand wires receive other resistances, ensureing measuring accuracy.
Further, by arranging total pulley, different steel strand wires, by different slideways, eliminate the friction between each steel strand wires, thus ensure the independent normal work of steel strand wires.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is spiral expanding device schematic diagram;
Fig. 3 is fixing total pulley schematic diagram;
Fig. 4 is embodiment site layout project schematic diagram
Wherein: 1 is dynamometer, 2 is spiral expanding device, and 3 is strainometer, and 4 is test box, and 5 is fixed block, and 6 is steel strand wires, and 7 is fixing total pulley, and 8 is thread-protected tube, and 9 is anchoring element, and 901-905 is first---the 5th anchoring element.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the utility model is included in the casing 4 that bottom is provided with opening, be evenly distributed with some steel strand wires 6 in casing 4 and be provided with some fixed pulleys 5, see Fig. 3, casing 4 inner opening place is also provided with has multichannel total pulley 7, one end of each steel strand wires 6 is fixed on casing 4 top, after the other end walks around fixed pulley 5 respectively, by stretching out casing 4 through opening after slideways different on total pulley 7; In casing 4, steel strand wires 6 are respectively arranged with strainometer 3, the outer one end of described steel strand wires 6 casing 4 is connected with anchoring element 9.Steel strand wires 6 one end in casing 4 is also connected with dynamometer 1, see Fig. 2, is also provided with the screw telescopic device 2 for regulating steel strand wires 6 level of tightness between steel strand wires 6 and dynamometer 1.Casing 4 outer openings place is provided with thread-protected tube 8, and steel strand wires 6 are in thread-protected tube 8.Thread-protected tube 8 adopts pvc pipe.The quantity of steel strand wires 6, anchoring element 9 is 5.
Multipoint displacement meter first adopts boring to bury underground to the 5th anchoring element 901-905, installs according to pointwise from bottom to top.When foot point position first anchoring original paper 901 is buried underground, transferred to predetermined depth, then expand with the filling orifice such as the concrete slurry of rapid hardening or other Anchor Agent in by what configure with certain by grout pipe, the amount injecting slurries controls according to reaching hole inner height 20cm, and make the first anchoring original paper 901 be in middle position, to reach the object with country rock common eigenvector; Then in hole, the mud of certain altitude is filled according to the spacing size between two measuring points, for avoiding the impact being subject to friction resistance in steel strand wires 6 folding process, loaded in PVC thread-protected tube 8, and at test box built with fixed block 5, steel strand wires 6 can realize smooth movement by fixed block 5, by that analogy, can by all anchoring original paper 901-905 installation in position.In addition, for the generation preventing steel strand wires 6 in monitoring measurement process from producing accidental or the situation such as lax, dynamometer 1 and spiral expanding device 2 are installed at the top of test box, by the degree of tautness that spiral expanding device regulates and dynamometer reading remains constant to make steel strand wires 6, strainometer 3 is associated with the first to the 5th anchoring element 901-905 by steel strand wires 6, pass to strainometer 3 when anchoring element generation vertical displacement by steel strand wires 6, thus obtain the vertical displacement at anchor point place; Test box 4 plays the effect fixing and protect various testing element.
Specific embodiment of the utility model and test result:
Example executes step:
1. adopt hundred meters of rigs, be bored into predetermined depth with the drilling rod of 108mm, with clear water displacement after pore-forming, ensure smooth clean in hole.
2. the first anchoring element 901 to the five anchoring element 905 is installed from bottom to top successively, during installation, ensures that each anchoring element 9 is positioned at middle position, hole.
3. when anchoring element 9 is installed, make steel strand wires 6 through thread-protected tube 8, walk around fixed block 5, fixing total pulley 7, when ensureing that anchoring element 9 is subjected to displacement, be reflected in time on strainometer 3 by steel strand wires 6.
4. be fixed in casing 4 by strainometer 3, dynamometer 1 and spiral expanding device 2 are equipped with in casing 4 top, and adjustment casing 4 is adjusted to appropriate position.
5. be connected with strainometer 3 by steel strand wires 6, steel strand wires 6 are regulated by spiral expanding device 2 and dynamometer 1 reading adjusts the tightness of steel strand wires 6 to suitable.
6. by strainometer 3 read test result.
Test result:
7 groups of multipoint displacement meters are installed at scene altogether, and MTD is 6m, 7m, 8m, 9m, 10m apart from earth's surface, arrange that section is as Fig. 4, obtains the country rock vertical displacement of side opening different depth place.
Claims (7)
1. the multipoint displacement meter for tunnel wall rock deformation monitoring, it is characterized in that, be included in the casing (4) that bottom is provided with opening, be evenly distributed with some steel strand wires (6) in described casing (4) and be provided with some fixed pulleys (5), one end of each steel strand wires (6) is fixed on casing (4) top, and the other end is walked around fixed pulley (5) respectively and stretched out casing (4) through opening afterwards; Described casing (4) interior steel strand wires (6) are respectively arranged with strainometer (3), described steel strand wires (6) casing (4) outer one end is connected with anchoring element (9).
2. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 1, it is characterized in that, described steel strand wires (6) one end in casing (4) is also connected with dynamometer (1).
3. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 2, it is characterized in that, between described steel strand wires (6) and dynamometer (1), being also provided with the screw telescopic device (2) for regulating steel strand wires (6) level of tightness.
4. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 1, it is characterized in that, described casing (4) outer openings place is provided with thread-protected tube (8), and described steel strand wires (6) are in thread-protected tube (8).
5. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 4, it is characterized in that, described thread-protected tube (8) is pvc pipe.
6. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 1, it is characterized in that, described casing (4) inner opening place is also provided with has multichannel total pulley (7), and described each steel strand wires (6) pass casing (4) respectively by after the upper different slideway of total pulley (7).
7. a kind of multipoint displacement meter for tunnel wall rock deformation monitoring according to claim 1, it is characterized in that, the quantity of described steel strand wires (6), anchoring element (9) is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741101.XU CN204286291U (en) | 2014-11-28 | 2014-11-28 | A kind of multipoint displacement meter for tunnel wall rock deformation monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741101.XU CN204286291U (en) | 2014-11-28 | 2014-11-28 | A kind of multipoint displacement meter for tunnel wall rock deformation monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204286291U true CN204286291U (en) | 2015-04-22 |
Family
ID=52869442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741101.XU Expired - Fee Related CN204286291U (en) | 2014-11-28 | 2014-11-28 | A kind of multipoint displacement meter for tunnel wall rock deformation monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204286291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052580A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | Test device used for measuring extrusion deformation of tunnel face of tunnel |
| CN110220490A (en) * | 2019-06-19 | 2019-09-10 | 中铁第四勘察设计院集团有限公司 | A kind of measuring device of rock mass deformation |
-
2014
- 2014-11-28 CN CN201420741101.XU patent/CN204286291U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052580A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | Test device used for measuring extrusion deformation of tunnel face of tunnel |
| CN106052580B (en) * | 2016-07-13 | 2019-04-16 | 同济大学 | A kind of experimental rig measuring tunnel tunnel face extrusion deformation |
| CN110220490A (en) * | 2019-06-19 | 2019-09-10 | 中铁第四勘察设计院集团有限公司 | A kind of measuring device of rock mass deformation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11480050B2 (en) | Device and method for measuring flow velocity and flow direction and geological parameters of groundwater through cross holes of deep wells | |
| CN104061902B (en) | Combined type underground deep disaster monitoring device | |
| CN105509628B (en) | A kind of magnetic survey positioner and the method that landslide depth displacement monitoring is carried out using the device | |
| CN105954499B (en) | Saturated yielding Loess Site carries out saturated yielding place evaluating method and device after fracture grouting reinforcing | |
| CN103900514A (en) | Multi-point displacement meter installation and automatic data collection method of steeply inclined seam roadway | |
| CN103134602A (en) | Buried pipe ground temperature measuring device and measuring methods | |
| CN108196006B (en) | A kind of experimental rig and method about tunnel gushing water protrusion-dispelling thickness degree | |
| CN111288897B (en) | Surrounding rock internal absolute displacement measuring device and method based on displacement meter and total station | |
| CN204286291U (en) | A kind of multipoint displacement meter for tunnel wall rock deformation monitoring | |
| Li et al. | ISRM suggested method for measuring rock mass displacement using a sliding micrometer | |
| CN102797268B (en) | Installation method for testing tube used for testing internal force of pre-stress tubular pile with slide micrometer | |
| CN203732033U (en) | Distributed optical fiber measurement system for monitoring whole-section horizontal displacement of dam body | |
| CN116147568B (en) | Single-wire distributed multipoint displacement meter device and testing method | |
| CN108663013A (en) | Single point extensometer and tunnel excavation advance core deformation measurement method | |
| CN104153340B (en) | One is soil body vibration velocity and pore water pressure sensing equipment and mounting method under water | |
| CN209512710U (en) | Deep displacement prefabricated inclination measurement device | |
| CN108106687A (en) | A kind of bedrock underground water drift net containing soft interlayer probes into method and double-capsule water-stop | |
| CN206721943U (en) | A kind of pile foundation displacement auxiliary detection device | |
| CN103422487B (en) | Method for measuring settlement deformation by utilizing inclinometer and angle-adjustable converter | |
| CN105333905A (en) | Coal rock upward borehole gas parameter measurement system | |
| CN112197806B (en) | Method for installing equipment for monitoring movement deformation, hydrology and stress of coal mining subsidence area | |
| CN205403769U (en) | Building vertical with level to deformation test device | |
| CN108332712A (en) | Differential Settlement Profiler meter and Settlement Profiler monitoring method | |
| CN210712984U (en) | Pile foundation bearing capacity self-balancing testing arrangement among model test | |
| CN110440696B (en) | Slope deep continuous displacement monitoring device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |