CN203657778U - Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body - Google Patents
Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body Download PDFInfo
- Publication number
- CN203657778U CN203657778U CN201320762462.8U CN201320762462U CN203657778U CN 203657778 U CN203657778 U CN 203657778U CN 201320762462 U CN201320762462 U CN 201320762462U CN 203657778 U CN203657778 U CN 203657778U
- Authority
- CN
- China
- Prior art keywords
- separation
- rock body
- surrounding rock
- multiple spot
- wire rope
- 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
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a multipoint separation layer value monitoring and measuring device and an installation and measuring method of a roadway surrounding rock body. The device is formed by a separation instrument, a locking device, a measuring bracket, a displacement meter and a plumb; one drilling hole and the other drilling hole are drilled in a surrounding rock body; a multipoint separation instrument is arranged in the one drilling hole, and the locking device is arranged in the other drilling hole; the locking device is internally provided with a front end sleeve pipe of the measuring bracket; the front end sleeve pipe and the locking device are tightly connected by a locking wire body; the displacement meter is fixed on the measuring bracket; one end of the displacement meter through a prepositioned pendant hooks a hook of the separation instrument, and the other end of the displacement meter through a pull rope bypasses a pulley and hooks the plumb; and finally a reader on the displacement meter is used by people to directly read readings on the reader, so that a separation layer variation value between two adjacent separation instruments can be obtained. According to the utility model, the high precision observation data are provided to the safety production and engineering supporting design of the roadway of the channel and mine, and the multipoint separation layer value monitoring and measuring device of the roadway surrounding rock body is mainly used for measuring the separation layer value which is caused by the surrounding rock roof and floor and the interior of the supporting rock body of the development roadway or mining roadway of the tunnel and mine.
Description
Technical field
The present invention relates to a kind of roof and floor and portion of side multiple spot absciss layer high precision measuring device, belong to the inner absciss layer measuring device of tunnel and mine country rock body technical field, be specifically related to roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism.
Background technology
At present, for the monitoring of tunnel and the inner absciss layer amount of mine country rock body, the most frequently used is two quasi-instruments, and one is electronic type monitoring instrument, and another kind is mechanical type monitoring instrument.The former electronic type monitoring instrument is absciss layer to be changed to the displacement signal causing be converted into electronic signal, realize the monitoring to country rock inside absciss layer amount, but have that its complex structure, processing cost and later maintenance cost are high, repair rate is high, the erosion of moisture-sensitive and water and cause the defects such as equipment malfunction, be difficult for spread to use; , although structure is simpler, there is often lower, the defect such as range is limited, easy-to-rust is malfunctioning of measuring accuracy in the latter's mechanical type monitoring instrument.The common weak point of summing up two kinds of instruments is: delamination monitoring point negligible amounts, be generally 2 ~ 4, and can not reflect the separating location that country rock body is inner concrete completely, particularly often at one's wit's end in the time that quantity exceedes more than 6 measuring points; Delamination monitoring mainly uses at top board, helps the monitoring of portion and base plate absciss layer to be difficult for fitting operation for two; Measurement stroke is limited, for the larger section of country rock body deformability amount, often because of its exceed self measure stroke lost efficacy; Installation process needs specialized engineering technician correctly to install, otherwise may affect the normal use of instrument, for the numerous workmens without special training, is difficult for correct fitting operation; Sensitivity is low, often only can be accurate to 0.1 ~ 1mm, particularly be subject to spring straining effect for lining rope one side, long term exposure is in malaria, often cause spring failure or corrosion and make monitoring instrument malfunctioning, causing cannot authentic and valid ground reading out data, causes great potential safety hazard to tunnel and mine tunnel engineering.
Summary of the invention
The object of this invention is to provide that a kind of simple in structure, multiple spot delamination monitoring, stroke are not limit, easy to install and use, cheap, absciss layer measures high roadway surrounding rock body multiple spot the roof separation value monitor and the measurement mechanism of accuracy of measurement.
In order to overcome the deficiencies in the prior art, technical scheme of the present invention is to solve like this: monitoring and the measurement mechanism of roadway surrounding rock body multiple spot absciss layer amount, this device is by multiple spot separation indicator, locker, measure support, displacement meter and vertical composition, special character of the present invention is to be drilled with in country rock body a boring and another boring, in one boring, multiple spot separation indicator is installed, described multiple spot separation indicator is by a clamp, two clamps, N clamp, one wire rope, two wire rope, N wire rope and separation indicator hook, two separation indicator hooks, N separation indicator hook composition, a wherein said clamp, two clamps, N clamp both sides are entrapped in by elastic wire on the inwall of a boring, a described clamp, two clamps, N clamp one end are connected with a wire rope, two wire rope, N wire rope one end respectively successively, and a described wire rope, two wire rope, the N wire rope other end are connected with a separation indicator hook, two separation indicator hooks, N separation indicator hook one end respectively successively, in described another boring, be mounted with locker, described locker is built-in with measures support front end sleeve pipe, described front end sleeve pipe is closely connected with external thread cone by locking filament, described external thread cone respectively with retaining ring, conical ring, pad, set nut, register pin connects, described front end sleeve pipe is fixedly connected with measurement support, on described measurement support, be fixed with displacement meter, described displacement meter is made up of dip stick and reader, described measurement support is connected with supporting plate by bolt with Moveable support, described supporting plate is connected with reader, described reader is connected with dip stick, described dip stick one end tangles N separation indicator hook by N wire rope and preposition suspension member, the described displacement meter other end is walked around pulley by stay cord and is tangled vertical, finally directly read reading by the reader on displacement meter, on described measurement support, have multiple circular holes, jump ring pellet is installed on Moveable support, Moveable support is inserted and measured in support, snap in by jump ring pellet in the circular hole of diverse location, measure support end and be fixed with pulley.
Described locker is made up of external thread cone, retaining ring, conical ring, pad and set nut, in described external thread cone, cover has retaining ring, retaining ring overcoat has conical ring, conical ring overcoat has pad, pad overcoat has set nut, by rotational lock nut, external thread cone and conical ring are shifted near mutually, cause after retaining ring is received crimp and be radially expanded, retaining ring is just firmly locked in boring.
Described retaining ring outer rim is made as zigzag or light face, and its material is metal material or elastomeric material or cement based anchoring material or organic anchoring material of band fluting.
Described front end sleeve pipe is that welding or bolt anchoring are connected with measuring support.
Described displacement count electronic digital indicator or mechanical type vernier caliper or electronic type displacement meter any one.
Described external thread cone should closely cooperate with front end sleeve pipe.
Described multiple spot separation indicator is two or more separation indicators.
On described front end sleeve pipe, be inlaid with register pin, register pin should snap in the draw-in groove with external thread cone end.
The present invention compares with mechanical type monitoring instrument with existing electronic type monitoring instrument, have that tool is simple in structure, to be suitable for that multiple spot delamination monitoring, stroke are not limit, easy to install and use, absciss layer measures accuracy of measurement high, cheap, can not only carry out absciss layer observation to top board, also can to its portion of side even base plate carry out the advantage such as high precision, absciss layer observation accurately, the inner absciss layer of country rock that can be widely used in tunnel, mine development tunnel and mining roadway changes.
Accompanying drawing explanation
Fig. 1 is each parts longitudinal profile structural representation that the present invention assembles;
Fig. 2 is the locker cross-sectional view of Fig. 1;
Fig. 3 is the A-A sectional structure schematic diagram of the retaining ring of Fig. 1;
Fig. 4 is the external thread cone sectional structure schematic diagram of Fig. 1;
Fig. 5 is the B-B sectional structure schematic diagram of Fig. 4;
Fig. 6 is the C-C sectional structure schematic diagram of Fig. 4;
Fig. 7 is the front end sleeve pipe and measurement support and Moveable support sectional structure schematic diagram of Fig. 1;
Fig. 8 is the D-D sectional structure schematic diagram of Fig. 7.
Parts title explanation in figure: external thread cone (1), retaining ring (2), conical ring (3), pad (4), set nut (5), register pin (7), front end sleeve pipe (8), measure support (9), circular hole (10), bolt 11, Moveable support (12), jump ring pellet 13, dip stick (14), reader (15), pulley 16, supporting plate (17), separation indicator hook (18), vertical (19), one boring (20), clamp (21), wire rope (22), stay cord (23), preposition suspension member (24), another hole (25)
Embodiment
Below in conjunction with accompanying drawing, content of the present invention is further illustrated:
Shown in Fig. 1-Fig. 8, a kind of monitoring and measurement mechanism of roadway surrounding rock body multiple spot absciss layer amount, this device is by multiple spot separation indicator, locker, measure support, displacement meter and vertical composition, in country rock body 26, be drilled with a boring 20 and another boring 25, in one boring 20, multiple spot separation indicator is installed, described multiple spot separation indicator is by a clamp 21-1, two clamp 21-2, N clamp 21-N, one wire rope 22-1, two wire rope 22-2, N wire rope 22-N and separation indicator hook 18-1, two separation indicator hook 18-2, N separation indicator hook 18-N composition, a wherein said clamp 21-1, two clamp 21-2, N clamp 21-N both sides are entrapped in by elastic wire on the inwall of a boring 20, a described clamp 21-1, two clamp 21-2, N clamp 21-N one end are connected with a wire rope 22-1, two wire rope 22-2, N wire rope 22-N one end respectively successively, and a described wire rope 22-1, two wire rope 22-2, the N wire rope 22-N other end are connected with a separation indicator hook 18-1, two separation indicator hook 18-2, N separation indicator hook 18-N one end respectively successively, in described another boring 25, be mounted with locker, described locker is built-in with measures support front end sleeve pipe 8, described front end sleeve pipe 8 is closely connected with external thread cone 1 by locking filament 6, described external thread cone 1 respectively with retaining ring 2, conical ring 3, pad 4, set nut 5, register pin 7 connects, described front end sleeve pipe 8 is fixedly connected with measurement support 9, on described measurement support 9, be fixed with displacement meter, described displacement meter is made up of dip stick 14 and reader 15, described measurement support 9 is connected with supporting plate 17 by bolt 11 with Moveable support 12, described supporting plate 17 is connected with reader 15, described reader 15 is connected with dip stick 14, dip stick 14 one end tangle N separation indicator hook 18-N by N wire rope 22-N and preposition suspension member 24, the described displacement meter other end is walked around pulley 16 by stay cord 23 and is tangled vertical 19, finally directly read reading by the reader 15 on displacement meter, on described measurement support 9, have multiple circular holes 10, jump ring pellet 13 is installed on Moveable support 12, Moveable support 12 is inserted and measured in support 9, snap in by jump ring pellet 13 in the circular hole 10 of diverse location, measure support 9 ends and be fixed with pulley 16.
Described locker is made up of external thread cone 1, retaining ring 2, conical ring 3, pad 4 and set nut 5, in described external thread cone 1, cover has retaining ring 2, retaining ring 2 overcoats have conical ring 3, conical ring 3 overcoats have pad 4, pad 4 overcoats have set nut 5, by rotational lock nut 5, external thread cone 1 and conical ring 3 are shifted near mutually, cause after retaining ring 2 is received crimp and be radially expanded, retaining ring 2 is just firmly locked in boring 25.
Described retaining ring 2 outer rims are made as zigzag or light face, and its material is metal material or elastomeric material or cement based anchoring material or organic anchoring material of band fluting.
Described front end sleeve pipe 8 is that welding or bolt anchoring are connected with measuring support 9.
Described displacement count electronic digital indicator or mechanical type vernier caliper or electronic type displacement meter any one.
Described external thread cone 1 should closely cooperate with front end sleeve pipe 8.
Described multiple spot separation indicator is two or more separation indicators.
On described front end sleeve pipe 8, be inlaid with register pin 7, register pin 7 should snap in the draw-in groove with external thread cone 1 end.
9, a kind of installation of measurement mechanism and measuring method: carry out in the steps below:
1), choose the section of the inner absciss layer of required monitoring rock mass, in country rock body 26, adopt drill bit that roofbolter mates with boring (25) diameter to be longer than 5 ~ 10 centimeters of lockers perpendicular to country rock body 26 walls to creeping in rock mass, then drill bit is changed into the drill bit matching with boring 20 diameters, continue along another 25 centers of holing to creep into rock mass deep to after needing observation absciss layer designated depth, stop continuing to creep into depths, and adopt pressure wind or water before drill bit to carry out hole processing clearly to the inside of holing, until discharge without rock slag or cinder again in boring, just can take out drilling rod and drill bit,
2), according to the absciss layer designing requirement at monitoring different depth place, choose the quantity of separation indicator, and adopt anchor cable or screw mandrel that multiple spot separation indicator is mounted to boring designated depth, installation process should be installed from inside to outside successively, and be exposed to outside hole wall outstanding the N wire rope 22-N with hook 18-N one end, for the ease of later stage installation locker, its wire rope 22-N exposed junction length should be no less than 40 centimeters long;
3), install locker in another boring 25 in before, need first assemble locker, by retaining ring 2, conical ring 3, pad 4 be inserted in successively in external thread cone 1, rotation set nut 5 on the external thread of last screw thread cone 1 outside, but need to keep retaining ring 2 in relaxed state;
4), wire rope 22-N and hook 18-N are passed to locker, and locker is sent in another boring 25, make retaining ring 2 just snap in borehole wall, and then rotational lock nut 5, external thread cone 1 and conical ring 3 are drawn close under external force mutually, thereby extruding retaining ring 2 force generation longitudinal dilatation distortion and firmly lock onto in another boring 25;
5), the front end sleeve pipe 8 of measuring support is inserted in external thread cone 1, and the register pin 7 in external thread cone 1 is snapped in external thread cone 1 draw-in groove, then adopt locking filament 6 to penetrate external thread cone 1 and front end sleeve pipe 8, make to measure support and be fixed in locker;
6), displacement meter is fixed in advance on the supporting plate 17 of measuring support, then pinning jump ring pellet 13 interts in the hollow tubular of measurement support 9 with circular hole 10 Moveable support 12, and pin actual measurement range adjustment and measure support total length, and dip stick 14 one end are tangled to the stay cord 23 with vertical 19, the other end tangles the hook 18-N of the N separation indicator of required observation by preposition suspension member 24, while measuring absciss layer initial reading, dip stick 14 should be pulled to maximum range, be convenient to later stage observation;
7), by reading reader 15 dial plate or display above, just can directly obtain multiple spot separation indicator place different depth place initial value and later stage changing value, and by data record and processing in time, judge the absciss layer amount at different depth place in a boring 20 with this.
embodiment1
The present embodiment is to implement in certain stope of coal mines tunnel, for the back production of monitoring face is adopted and is destroyed the impact that causes the inner absciss layer of rock mass its mining roadway base plate, the MK-3 underground drill rig that field by using Mei Ke institute rig is produced vertically to drilling depth under base plate reach 16m, observation port diameter is 50mm.Carry out the installation of the each assembly of instrument according to the method described in implementer's case and step, 21 base plate separation indicators are arranged in to the different depth place of base plate observation port in base plate observation port.During being below this working face extraction, the observed case of return aircourse base plate observation is as follows: can find out from the relative absciss layer amount (16～8m measuring point) of the adjacent each measuring point of tailentry road base plate separation indicator, absciss layer higher value should occur between 11～12m, between each measuring point, maximum absciss layer amount can reach 42.58mm, and between the survey of being separated by is inferior, each measuring point maximal phase reaches 6.24mm to absciss layer amount; Can find out from the relative absciss layer amount (8～aperture measuring point) of the adjacent each measuring point of tailentry road base plate separation indicator, except 1m between base plate because loose range range of influence, tunnel causes the larger data that base plate pucking causes, 8m measuring point～aperture measuring point absciss layer higher value occurs between 3～2.5m, and this section of absciss layer amount can be reached for 12.37mm.These observation datas absolutely prove, in observation port, base plate absciss layer quantitative changeization is comparatively obvious, locate along with the continuous propelling crack of coal face germinates gradually in hole depth 8m left and right, and grow crack to 0～8m and the expansion of 8～12m two ends, corresponding bottom plate depth 3.0～2.5m and 11.0～11.5m, cranny development degree is relevant with this place's lithology, before observation hole depth, the crack of 3～2.5m position is tunnel relaxation zone coverage, original crack agensis below hole depth 12m, because mining influence does not produce obvious crack.Fully show by this observation, along with the continuous back production of workplace, the maximum separating location in its base plate deep should occur between 11.0～11.5m, this result is adopted collapse dept value for mine bottom plate authentic data is provided, and mine will be prevented and treated to base plate water damage and reference and reference function are played in improvement from now on.
Claims (8)
1. monitoring and the measurement mechanism of a roadway surrounding rock body multiple spot absciss layer amount
,this device is by multiple spot separation indicator, locker, measure support, displacement meter and vertical composition, it is characterized in that being drilled with in country rock body (26) boring (20) and another boring (25), in one boring (20), multiple spot separation indicator is installed, described multiple spot separation indicator is by a clamp (21-1), two clamps (21-2), N clamp (21-N), one wire rope (22-1), two wire rope (22-2), N wire rope (22-N) and separation indicator hook (18-1), two separation indicator hooks (18-2), N separation indicator hook (18-N) composition, a wherein said clamp (21-1), two clamps (21-2), N clamp (21-N) both sides are entrapped in by elastic wire on the inwall of a boring (20), a described clamp (21-1), two clamps (21-2), N clamp (21-N) one end are connected with a wire rope (22-1), two wire rope (22-2), N wire rope (22-N) one end respectively successively, and a described wire rope (22-1), two wire rope (22-2), N wire rope (22-N) other end are connected with a separation indicator hook (18-1), two separation indicator hooks (18-2), N separation indicator hook (18-N) one end respectively successively, in described another boring (25), be mounted with locker, described locker is built-in with measures support front end sleeve pipe (8), described front end sleeve pipe (8) is closely connected with external thread cone (1) by locking filament (6), described external thread cone (1) respectively with retaining ring (2), conical ring (3), pad (4), set nut (5), register pin (7) connects, described front end sleeve pipe (8) is fixedly connected with measurement support (9), on described measurement support (9), be fixed with displacement meter, described displacement meter is made up of dip stick (14) and reader (15), described measurement support (9) is connected with supporting plate (17) by bolt (11) with Moveable support (12), described supporting plate (17) is connected with reader (15), described reader (15) is connected with dip stick (14), described dip stick (14) one end tangles N separation indicator hook (18-N) by N wire rope (22-N) and preposition suspension member (24), the described displacement meter other end is walked around pulley (16) by stay cord (23) and is tangled vertical (19), finally directly read reading by the reader on displacement meter (15), on described measurement support (9), have multiple circular holes (10), jump ring pellet (13) is installed on Moveable support (12), Moveable support (12) is inserted and measured in support (9), snap in by jump ring pellet (13) in the circular hole (10) of diverse location, measure support (9) end and be fixed with pulley (16).
2. roadway surrounding rock body multiple spot the roof separation value monitor according to claim 1 and measurement mechanism, it is characterized in that described locker is by external thread cone (1), retaining ring (2), conical ring (3), pad (4) and set nut (5) composition, the upper cover of external thread cone (1) has retaining ring (2), retaining ring (2) overcoat has conical ring (3), conical ring (3) overcoat has pad (4), pad (4) overcoat has set nut (5), by rotational lock nut (5), external thread cone (1) and conical ring (3) are shifted near mutually, cause after retaining ring (2) is received crimp and be radially expanded, retaining ring (2) is just firmly locked in boring (25).
3. according to roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism described in claim 1 or 2, it is characterized in that described retaining ring (2) outer rim is made as zigzag or light face, its material is metal material or elastomeric material or cement based anchoring material or organic anchoring material of band fluting.
4. roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism according to claim 1, is characterized in that described front end sleeve pipe (8) and measures support (9) being connected for welding or bolt anchoring.
5. roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism according to claim 1, it is characterized in that described displacement count electronic digital indicator or mechanical type vernier caliper or electronic type displacement meter any one.
6. roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism according to claim 1, is characterized in that described external thread cone (1) should closely cooperate with front end sleeve pipe (8).
7. roadway surrounding rock body multiple spot the roof separation value monitor and measurement mechanism according to claim 1, is characterized in that described multiple spot separation indicator is two or more separation indicators.
8. roadway surrounding rock body multiple spot the roof separation value monitor according to claim 1 and measurement mechanism, is characterized in that being inlaid with register pin (7) on described front end sleeve pipe (8), and register pin (7) should snap in the draw-in groove of band external thread cone (1) end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762462.8U CN203657778U (en) | 2013-11-28 | 2013-11-28 | Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762462.8U CN203657778U (en) | 2013-11-28 | 2013-11-28 | Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657778U true CN203657778U (en) | 2014-06-18 |
Family
ID=50924156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762462.8U Expired - Fee Related CN203657778U (en) | 2013-11-28 | 2013-11-28 | Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616001A (en) * | 2013-11-28 | 2014-03-05 | 西安科技大学 | Roadway surrounding rock body multipoint bed separation volume monitoring and measuring device and mounting and measuring method |
| CN106050242A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | On-site measurement device for extrusion deformation of front of tunnel face |
-
2013
- 2013-11-28 CN CN201320762462.8U patent/CN203657778U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616001A (en) * | 2013-11-28 | 2014-03-05 | 西安科技大学 | Roadway surrounding rock body multipoint bed separation volume monitoring and measuring device and mounting and measuring method |
| CN103616001B (en) * | 2013-11-28 | 2016-06-15 | 西安科技大学 | Roadway surrounding rock body multiple spot the roof separation value monitor and measurement apparatus and installation and measuring method |
| CN106050242A (en) * | 2016-07-13 | 2016-10-26 | 同济大学 | On-site measurement device for extrusion deformation of front of tunnel face |
| CN106050242B (en) * | 2016-07-13 | 2018-07-03 | 同济大学 | A kind of field measurement device of tunnel tunnel face front extrusion deformation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018082307A1 (en) | Total-tunnel total-process full-section surface deformation monitoring apparatus and method | |
| CN109116411B (en) | Microseismic sensors are fixed and recyclable device in a kind of hole suitable for different pore size | |
| CN104061902B (en) | Combined type underground deep disaster monitoring device | |
| CN111456723B (en) | One-hole dual-purpose method for overburden three-zone detection and rock stratum movement monitoring | |
| CN109112938B (en) | Real-time monitoring system for internal layered deformation of roadbed and installation method thereof | |
| CN106321001B (en) | It is a kind of for monitoring the borehole anchorage structure and its construction method in floor rocks crack | |
| CN103616001B (en) | Roadway surrounding rock body multiple spot the roof separation value monitor and measurement apparatus and installation and measuring method | |
| CN109269955B (en) | In-situ testing device and method for permeability of coal stratum | |
| CN106595548A (en) | Displacement measuring method for the inner part of enclosing rock for tunnel inner face | |
| CN204899903U (en) | Monitoring devices is warp in release drilling of coal petrography layer | |
| CN204827501U (en) | High precision fiber optic grating cavity of excelling in dynamometry stock | |
| CN203657778U (en) | Multipoint separation layer value monitoring and measuring device of roadway surrounding rock body | |
| CN103469778A (en) | Standard penetration test method for dividing rock weathering degree | |
| CN105201494A (en) | Method for performing ground stress test by using complete equipment | |
| CN109578078B (en) | Multi-base point separation layer instrument suitable for automatic warning of loose and broken coal and rock mass and use method thereof | |
| CN113701705A (en) | Automatic monitoring method for absolute deformation of tunnel section | |
| CN105178938B (en) | Extra-deep hole drilling hydraulic fracturing rock masses fracturing stitches without time limit orienting device and method | |
| CN102183230B (en) | An anchoring device of a datum mark in a boring | |
| CN218097930U (en) | Water level probe for measuring underground water level | |
| CN105003250A (en) | Device and method for monitoring pressure-relief borehole deformation of coal and rock strata | |
| CN105806275B (en) | Device and method for monitoring continuous deformation of different areas of surrounding rock in real time | |
| CN206074155U (en) | A kind of many field test devices of quasi-distributed floor undulation | |
| CN105333905A (en) | Coal rock upward borehole gas parameter measurement system | |
| CN204613017U (en) | Preburied component surrounding rock-support structure core drilling method drawing measurement mechanism | |
| CN203475404U (en) | Standard penetration test device for dividing rock weathering degree |
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: 20140618 Termination date: 20161128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |