CN203672331U - Separation apparatus for monitoring rock roof deformation - Google Patents
Separation apparatus for monitoring rock roof deformation Download PDFInfo
- Publication number
- CN203672331U CN203672331U CN201420044417.3U CN201420044417U CN203672331U CN 203672331 U CN203672331 U CN 203672331U CN 201420044417 U CN201420044417 U CN 201420044417U CN 203672331 U CN203672331 U CN 203672331U
- Authority
- CN
- China
- Prior art keywords
- anchor head
- roof
- fbg
- conduit
- 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
Images
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
Disclosed in the utility model is a separation apparatus for monitoring rock roof deformation. A drilling hole penetrating a plurality of positions is drilled above a tunnel rock roof; and anchor heads with different depths are installed in the drilling hole. One ends of the anchor heads are led to the outside of the hole by a fine steel wire; the other ends penetrate an equal strength beam through a pedestal of a roof separation instrument and then penetrate out of the other end of the pedestal, penetrate a built-in spring inside a conduit as well as a guiding device connected with the end portion of the spring and a rope clamp locking device connected with the end portion of the spring and then penetrate out of the conduit. A separation instrument pedestal is connected with the conduit by an external thread; the equal strength beam is installed at the inner cavity of the pedestal and an optical fiber grating sensor is pasted at the beam; a temperature sensor is connected in series with the optical fiber; the tail fiber is connected with a transmission cable and is connected with a demodulation instrument and an electronic computer by the transmission cable. The provided apparatus has advantages of small size, high sensitivity, wide frequency band, high temperature resistance, corrosion resistance, electromagnetic interference resistance, and capabilities of long-distance transmission and all-weather on-line roof separation layer monitoring and can be widely applied to a tunnel, a developing tunnel, and a mining roadway for monitoring.
Description
Technical field
The utility model relates to coal mine tunnel top board delamination monitoring field, is specifically related to a kind of absciss layer device of monitoring rock roof deformation.
Background technology
Fall of ground is modal accident in colliery, brings serious threat to normal production and workman's life security in colliery.Along with the technology and equipment of coal face control roof accident progressively improves, face roof accident rate progressively declines.But a little less than input and theoretical research relatively due to roadway bolt support technology equipment, particularly along with the increase of the pit mining degree of depth, the increasing of terrestrial stress, there is always high problem in roadway roof accidents incidence.
Facts have proved, the generation of roadway roof accidents is regular substantially, as long as can monitor top board by correct theory and means, grasps its mechanics, roof control is based upon on the basis of science, and roof accident can prevent.Therefore, monitoring roadway roof absciss layer and take necessary reply means and measure to trouble-saving generation and ensure safety in production be significant.
And traditional mechanical type roof delamination monitoring instrument, although structure is simpler, exist measuring accuracy often lower, range is limited, easy-to-rust is malfunctioning, cannot realize the defects such as the real-time dynamic monitoring of roof delamination.Therefore, invented a kind of novel rock roof delamination monitoring instrument.
Summary of the invention
The purpose of this utility model is to provide that a kind of volume is little, highly sensitive, bandwidth, high temperature resistant, corrosion-resistant, anti-electromagnetic interference (EMI), can long-distance transmissions, can trouble free service under inflammable under coal mine, explosive environments, realize a kind of absciss layer device of monitoring rock roof deformation of 24 hours on-line monitorings of whole day of roof delamination.
In order to overcome the deficiencies in the prior art, the technical solution of the utility model is to solve like this: a kind of absciss layer device of monitoring rock roof deformation, this absciss layer device is by anchor head, wire rope, roof separation indicator, transmission cable, (FBG) demodulator, the webserver and computing machine composition, special character of the present invention is to make a call to the boring through multiple layers of position above tunnel or tunnel rock top board, the first anchor head of at least three different depths is installed in boring, the second anchor head and the 3rd anchor head, described the first anchor head, the second anchor head is connected and guides to outside hole with finer wire one end of different length respectively with the 3rd anchor head one end, the described finer wire other end is connected with the pen recorder outside boring, the inside of each pen recorder is separately installed with a fiber grating measuring mechanism that structure is identical, described fiber grating roof separation indicator is made up of the parallel measuring mechanism of three covers, each measuring mechanism is connected by its corresponding conduit one end of same base, steel wire is connected with any one anchor head, and through base and the conduit of measuring mechanism, described base intracavity connects a beam of uniform strength, on the described beam of uniform strength, be pasted with fiber grating displacement sensor, tail optical fiber on described displacement transducer is connected with transmission cable one end, the described transmission cable other end is connected with FBG (FBG) demodulator, described FBG (FBG) demodulator is connected with computing machine, and can be uploaded to the webserver by network.
Described conduit quantity increases or reduces according to actual requirement.
The range of described absciss layer device exceedes after 20cm, can be by dismounting wire clips school zero again.
The utility model compared with prior art, have that volume is little, highly sensitive, bandwidth, high temperature resistant, corrosion-resistant, anti-electromagnetic interference (EMI), can long-distance transmissions, can trouble free service under inflammable under coal mine, explosive environments, realize the feature of 24 hours on-line monitorings of whole day of roof delamination, data transmission through (FBG) demodulator processing arrives computing machine, just can get information about the information of roof delamination amount by computing machine.Meanwhile, the data that (FBG) demodulator can also be accepted upload to the webserver by network, realize sharing of information.The inner absciss layer of country rock that can be widely used in tunnel, mine development tunnel and mining roadway changes.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the main TV structure schematic diagram of the roof separation indicator of Fig. 1;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is the mechanics transitive relation sketch of Fig. 1;
Fig. 5 is the separation indicator calibration experiment curve map of Fig. 1.
Embodiment
Accompanying drawing is embodiment of the present utility model.
Below in conjunction with accompanying drawing, summary of the invention is described further:
Shown in Fig. 1～Fig. 3, a kind of absciss layer device of monitoring rock roof deformation, this absciss layer device is by anchor head, wire rope, roof separation indicator, transmission cable, (FBG) demodulator, the webserver and computing machine composition, above tunnel or tunnel rock top board, play the boring through multiple layers of position, the first anchor head A of at least three different depths is installed in boring, the second anchor head B and the 3rd anchor head C, described the first anchor head A, the second anchor head B is connected and guides to outside hole with finer wire one end of different length respectively with the 3rd anchor head C one end, the described finer wire other end is connected with the pen recorder outside boring, the inside of each pen recorder is separately installed with a fiber grating measuring mechanism that structure is identical, described fiber grating roof separation indicator is made up of the parallel measuring mechanism of three covers, each measuring mechanism is connected by its corresponding conduit one end of same base, steel wire is connected with any one anchor head, and through base and the conduit of measuring mechanism, described base intracavity connects a beam of uniform strength, on the described beam of uniform strength, be pasted with fiber grating displacement sensor, tail optical fiber on described displacement transducer is connected with transmission cable one end, the described transmission cable other end is connected with FBG (FBG) demodulator, described FBG (FBG) demodulator is connected with computing machine, and can be uploaded to the webserver by network.
Described conduit quantity increases or reduces according to actual requirement.
The range of described absciss layer device exceedes after 20cm, can be by dismounting wire clips school zero again, and the scope of displacement sensor length is 0-20cm, precision can reach 0.1cm.When measuring length while being greater than the measurement range 20cm of sensor, can remove the wire clips of wire rope, reinstall and change null position.Reset after zero point, so just can realize repeatedly areal survey, reach the object that increases range., wire rope can be cut off if change when measuring position in measure field, conveniently reclaim this instrument, and can be cost-saving to greatest extent.
embodiment 1
This principle of device and structure are to play the boring through multiple layers of position by back, anchor head A, B and the C of three different depths are installed in the hole of this boring, guide to outside hole with the finer wire of different length respectively, outside boring, have three identical pen recorders, the inside of each device is separately installed with a fiber grating displacement sensor that performance is identical.Whole roof separation indicator height is 32-38cm, and base diameter is φ 15cm-φ 18cm, and steel wire adopts instrument wire rope, and wire rope cross section diameter is 0.8mm, and every wire rope is formed by 49 finer wire braidings, meets the requirement of strength using.
Shown in Fig. 4, the compact conformation of this device is rationally distributed, and stress deformation is linear change, accurate recording because absciss layer occurs in rock stratum, cause the variation that rope capacity that this layer of position anchor head connects occurs.Wire rope passes to displacement on the spring being attached thereto, and makes spring compression occur and power is delivered on the beam of uniform strength, causes the centre wavelength of the fiber grating of pasting on the beam of uniform strength to change.
The utility model is except realizing the on-line monitoring of roof delamination, can also carry out in down-hole the monitoring of roof delamination amount by the method for artificial reading, when after top board generation absciss layer, being positioned at the steel wire that the anchor head of absciss layer top connects is elongated, cause the compressed distortion of spring in conduit, workman can, by observing residing position, conduit inner spring end, carry out reading, contrast with last reading, just can understand at any time the absciss layer situation of top board.
In order to overcome the impact of temperature, pasting a fiber grating not stressing specially in disc base the inside in addition, if the centre wavelength of fiber grating still changes, should be just that the variation of temperature causes.In the process of measuring, can, by the mode of temperature compensation, get rid of the impact of temperature on fiber grating measuring.
Shown in Fig. 5, after the present invention completes, to its model machine, three parallel measurement mechanisms have carried out calibration experiment, and result as shown in Figure 5.By experiment result we can find out, optic fiber grating wavelength drift value and roof delamination amount present good linear relationship, have reached designing requirement, completely meet design original intention.Illustrate that this device can effectively monitor rock roof delamination amount.
In sum, whole roof delamination device monitoring system as shown in Figure 1.Roof delamination monitoring system is mainly made up of three parts: FBG (FBG) demodulator carries out the processing of light signal to FBG roof separation indicator monitoring roof delamination---optical fiber cable for mine signal transmission---.Data transmission through (FBG) demodulator processing arrives computing machine, just can get information about the information of roof delamination amount by computing machine.Meanwhile, the data that (FBG) demodulator can also be accepted upload to the webserver by network, realize sharing of information.
Claims (3)
1. monitor the absciss layer device of rock roof deformation for one kind, this absciss layer device is by anchor head, wire rope, fiber grating measuring mechanism, transmission cable, (FBG) demodulator, the webserver and computing machine composition, it is characterized in that making a call to the boring through multiple layers of position above tunnel or tunnel rock top board, first anchor head (A) of at least three different depths is installed in boring, the second anchor head (B) and the 3rd anchor head (C), described the first anchor head (A), the second anchor head (B) is connected and guides to outside hole with finer wire one end of different length respectively with the 3rd anchor head (C) one end, the described finer wire other end is connected with the pen recorder outside boring, the inside of each pen recorder is separately installed with a fiber grating measuring mechanism that structure is identical, described fiber grating roof separation indicator is made up of the parallel measuring mechanism of three covers, each measuring mechanism is connected by its corresponding conduit one end of same base, steel wire is connected with any one anchor head, and through base and the conduit of measuring mechanism, described base intracavity connects a beam of uniform strength, on the described beam of uniform strength, be pasted with fiber grating displacement sensor, tail optical fiber on described displacement transducer is connected with transmission cable one end, the described transmission cable other end is connected with FBG (FBG) demodulator, described FBG (FBG) demodulator is connected with computing machine, and can be uploaded to the webserver by network.
2. a kind of absciss layer device of monitoring rock roof deformation according to claim 1, is characterized in that described conduit quantity increases or reduces according to actual requirement.
3. a kind of absciss layer device of monitoring rock roof deformation according to claim 1, is characterized in that the range of described absciss layer device exceedes after 20cm, can be by dismounting wire clips school zero again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044417.3U CN203672331U (en) | 2014-01-24 | 2014-01-24 | Separation apparatus for monitoring rock roof deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044417.3U CN203672331U (en) | 2014-01-24 | 2014-01-24 | Separation apparatus for monitoring rock roof deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672331U true CN203672331U (en) | 2014-06-25 |
Family
ID=50968617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044417.3U Expired - Fee Related CN203672331U (en) | 2014-01-24 | 2014-01-24 | Separation apparatus for monitoring rock roof deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203672331U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743357A (en) * | 2014-01-24 | 2014-04-23 | 西安科技大学 | Fiber bragg grating separation layer device for monitoring deformation of rock roof |
| CN106257278A (en) * | 2016-10-12 | 2016-12-28 | 华北科技学院 | System and monitoring method are monitored in a kind of simulation experiment for roadway roof absciss layer |
| CN110455210A (en) * | 2019-08-13 | 2019-11-15 | 中国铁路总公司 | A kind of high-speed rail tunnel-type position sensing method based on imbedded fiber |
-
2014
- 2014-01-24 CN CN201420044417.3U patent/CN203672331U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743357A (en) * | 2014-01-24 | 2014-04-23 | 西安科技大学 | Fiber bragg grating separation layer device for monitoring deformation of rock roof |
| CN106257278A (en) * | 2016-10-12 | 2016-12-28 | 华北科技学院 | System and monitoring method are monitored in a kind of simulation experiment for roadway roof absciss layer |
| CN106257278B (en) * | 2016-10-12 | 2018-02-23 | 华北科技学院 | A kind of simulated experiment monitoring system and monitoring method for roadway roof absciss layer |
| CN110455210A (en) * | 2019-08-13 | 2019-11-15 | 中国铁路总公司 | A kind of high-speed rail tunnel-type position sensing method based on imbedded fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103528530B (en) | A kind of mining optical fiber grating roof abscission layer monitoring device and monitoring method | |
| CN102818665B (en) | Device and method for integrated collection of stress and displacement of surrounding rocks | |
| CN103743357A (en) | Fiber bragg grating separation layer device for monitoring deformation of rock roof | |
| CN103454021B (en) | Roadway surrounding rock stress monitoring device based on fiber bragg grating sensing | |
| CN104807563B (en) | Stress test device in a non-contact manner and method based on drilling microscopic digital shooting | |
| CN106767476B (en) | Slope stability monitoring and landslide early warning forecasting method based on all-fiber sensing network | |
| CN104793264A (en) | Geological condition real-time reflecting and advance detecting system and geological condition real-time reflecting and advanced detecting method applied to drilling rig | |
| CN102798492A (en) | Fiber bragg grating detection system device and method for detecting anchoring force of anchor rod | |
| CN104406559B (en) | A kind of landslide horizontal shift vertical characteristics sensor unit and using method | |
| CN203672331U (en) | Separation apparatus for monitoring rock roof deformation | |
| CN104142187A (en) | Gob-side entry retaining pasty filler on-line detection method | |
| CN103266917A (en) | Roof bed separation monitoring system based on fiber grating | |
| CN103257009A (en) | Working face mine pressure on-line monitoring system based on fiber grating sensing | |
| CN103994846A (en) | Device and method for testing surrounding rock stress field distribution | |
| CN106918415B (en) | Device and method for measuring ground stress of semi-implanted hole bottom fiber grating strain gauge | |
| CN204007961U (en) | Gob-side entry retaining lotion obturator on-line monitoring system | |
| AU2017317602A1 (en) | Sound level meter-based tunnel roof rock Protodyakovnov coefficient detecting-while-drilling apparatus and method | |
| CN110836690A (en) | High-position remote landslide early warning device and method based on deformation and water content | |
| CN107356356A (en) | The fiber grating surrouding rock stress monitoring device and monitoring system of a kind of high-survival rate | |
| CN107402087A (en) | A kind of monitoring device and monitoring system of country rock three-dimensional turbulence stress field | |
| CN203642880U (en) | Fiber bragg grating distributed displacement sensor monitoring inner deformation of side slope | |
| CN207074097U (en) | A kind of monitoring device and monitoring system of country rock three-dimensional turbulence stress field | |
| CN203518948U (en) | Monitoring device for roof separation of mining fiber grating | |
| CN109239779B (en) | Testing method for loose circle of tunnel surrounding rock and surrounding rock damage grading method | |
| CN207688853U (en) | A kind of full-automatic deep displacement inclinometer of more piece independent assortment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140625 Termination date: 20170124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |