CN109356648B - A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring - Google Patents
A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring Download PDFInfo
- Publication number
- CN109356648B CN109356648B CN201811052649.2A CN201811052649A CN109356648B CN 109356648 B CN109356648 B CN 109356648B CN 201811052649 A CN201811052649 A CN 201811052649A CN 109356648 B CN109356648 B CN 109356648B
- Authority
- CN
- China
- Prior art keywords
- component
- displacement sensor
- sleeve
- anchoring
- type displacement
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
Abstract
The invention discloses a vibrating string type displacement sensor anchoring device for monitoring tunnel engineering surrounding rocks, which comprises a connecting part, an anchoring part and a friction part, wherein: the connecting part comprises a sleeve, the sleeve is sleeved on the outer side of the vibrating wire type displacement sensor, and an anchor head of the vibrating wire type displacement sensor is connected with the anchoring part; the anchor part includes a plurality of anchor subcomponent to articulated form is connected on the sleeve surface, and every anchor subcomponent all includes torsion spring, flexible arm and wedge groove, and the wedge groove sets up in the sleeve surface, torsion spring sets up in the wedge groove, and the one end and the wedge groove of flexible arm are connected, and the other end of flexible arm guarantees through flexible action that vibration string formula displacement sensor can support on the pore wall of mounting hole, the frictional resistance part sets up the tip of flexible arm in the anchor part, increases its and pore wall country rock's frictional resistance.
Description
Technical Field
The invention relates to a vibrating string type displacement sensor anchoring device for monitoring surrounding rocks in tunnel engineering.
Background
The intelligent health monitoring of the whole life cycle of tunnels and underground engineering is becoming a hotspot in the field of geotechnical engineering and is also a development direction in the future. The sensor is an indispensable part for realizing long-term monitoring, and the service life and the monitoring frequency of the sensor are greatly developed. However, the displacement sensor for tunnel engineering is extremely difficult in the anchoring process, which limits the widespread popularization of the sensor.
At present, the working principle of a displacement sensor is that the aperture, the hole direction and the hole depth of a mounting hole are firstly arranged at a preset position of a tunnel side wall according to design requirements, then an anchor head which is pre-embedded at the hole bottom of the mounting hole of the displacement sensor is anchored and fixed with a safety protection base at the hole opening, deformation is measured through vibration of a measuring rod between the anchor head and the safety protection base, the base at the hole opening is easy to fix due to exposure to the surface of the tunnel side wall, and the anchor head is positioned at the deep part of a drilled hole, so that anchoring is difficult; the reliability of the anchorage of the anchor head determines the accuracy of the monitored data.
At present, the anchor head is mainly designed into a threaded form and then fixed by adopting a cement slurry pouring mode; the positions of the tunnel which are easy to cause catastrophe are often distributed on the arch shoulders, the arch crown and the like, the grouting of slurry cannot be facilitated by a downward inclined drilling mode due to the special positions, and the coagulation of the anchoring agent is also limited by the occurrence of fracture water. Therefore, the vibrating wire displacement sensor for field monitoring is very difficult to fix, and cannot meet the deformation monitoring of tunnels and underground engineering.
Disclosure of Invention
The invention provides a vibrating string type displacement sensor anchoring device for monitoring surrounding rocks in tunnel engineering, aiming at solving the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vibrating wire displacement sensor anchor for tunnel engineering country rock monitoring, includes coupling component, anchor part and friction part, wherein:
the connecting part comprises a sleeve, the sleeve is sleeved on the outer side of the vibrating wire type displacement sensor, and an anchor head of the vibrating wire type displacement sensor is connected with the anchoring part;
the anchor part includes a plurality of anchor subcomponent to articulated form is connected on the sleeve surface, and every anchor subcomponent all includes torsion spring, flexible arm and wedge groove, the wedge groove sets up in the sleeve surface, torsion spring sets up in the wedge groove, and flexible arm one end is connected with the articulated form of wedge groove, and the other end of flexible arm is supported on the pore wall of mounting hole through flexible action stability, makes string vibration type displacement sensor not produce the removal, the friction hinders the tip of part setting flexible arm in the anchor part, increases its and pore wall country rock's frictional resistance.
As a further limitation, the connecting part comprises an embedded sleeve and an external sleeve, the external sleeve is sleeved outside the embedded sleeve, the front end of the embedded sleeve is in a threaded screw rod shape and is in bolted connection with the external sleeve, and the rear end of the embedded sleeve is a hollow semi-cylinder.
As a further limitation, there are three of the anchor sub-assemblies, evenly distributed along the circumference of the outer sleeve.
As a further limitation, a bowl buckle is arranged in the middle of the embedded sleeve, the width of the bowl buckle is designed to be smaller than the width of the groove of the anchor head of the sensor, and the bowl buckle can be buckled in the groove of the anchor head to enable the embedded sleeve and the sensor to form a stressed whole.
As a further limitation, the inner side of the external sleeve is provided with threads to be in bolt connection with the internal nested cylinder.
As a further limitation, the telescopic arm comprises an arc-shaped arm and a connecting piece, the connecting piece is matched with the wedge-shaped groove and can be detachably assembled with the wedge-shaped groove, and the arc-shaped arm is connected with the connecting piece.
By way of further limitation, the friction member includes a first elastic member disposed at an outer side of the telescopic arm and a second elastic member disposed at a warped end of the telescopic arm.
As a further limitation, the first elastic member surface is subjected to a polishing treatment and is coated with a lubricant.
By way of further limitation, the wedge-shaped groove comprises a component A, a component B and a component C, wherein the component A and the component B are composed of two single pieces, the component A is welded on an external sleeve in the connecting part, the two single pieces of the component B are welded on two sides of the component C, the shape of the component B is the same as that of the component A, the distance between the two single pieces of the component B is larger than that between the two single pieces of the component A, the component B and the two single pieces of the component A can be arranged in a staggered mode during hinging, and a pair of parallel holes with the same diameter are formed in the middle position of the component B and the component A and used for hinging.
As a further limitation, the torsion spring can compress the torsion spring to store energy when the telescopic arm is attached to the inner side, and the torsion spring releases elastic potential energy when the sensor reaches a preset position so as to firmly fix the telescopic arm on the hole wall.
Compared with the prior art, the invention has the beneficial effects that:
1) the existing sensors for on-site monitoring only have vibrating wire type sensors, and the working principle of the vibrating wire type displacement sensors is completed by vibrating wire vibration caused by a pull rod between an anchor head fixed at the front end and a base of a pipeline at the rear end, so that the anchor head needs to be firmly anchored on a hole wall. The traditional anchoring process is cement grout pouring, and the method has the disadvantage that the method is only suitable for holes inclined downwards or under the condition of no water. And the geological disasters such as collapse, water inrush and mud inrush in the tunnel often occur at the position of the vault or the arch shoulder, so that the anchoring of the sensor is difficult to realize. Therefore, the invention can realize convenient installation of the sensor under complex conditions.
2) The invention has the advantages of easy realization, great feasibility, low manufacturing cost and simple operation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of a coupling member;
FIG. 2 is a schematic view of a torsion spring;
FIG. 3 is a schematic view of a telescoping arm;
the device comprises a bowl buckle 1, a bowl buckle 2, an embedded sleeve 3, an external sleeve 4, a torsion spring 5, components A and 6, components B and 7, components C and 8, a telescopic arm 9 and a rubber friction sheet.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
A vibrating string type displacement sensor anchoring device for monitoring information of surrounding rocks of tunnels and underground engineering comprises a connecting part, an anchoring part and a friction part. The arrangement of the connecting component is used for connecting the anchor head of the vibrating wire type displacement sensor with the anchoring component together, so that the sensor and the anchoring component form a common stressed whole; the anchoring part is arranged on the connecting part and is used for fixing the sensor anchor head connected with the connecting part on the wall of the mounting hole; the friction component is arranged at the end part of the telescopic arm 8 in the anchoring component, and increases the friction force with surrounding rock of the hole wall. The key technology of the invention is an anchoring part, and the displacement sensor can be freely and conveniently installed in the field of tunnel and underground engineering monitoring successfully.
The anchoring part comprises three torsion springs 4, three telescopic arms 8, three wedge-shaped grooves and the like. A torsion spring 4, a telescopic arm 8 and a wedge-shaped groove form an anchoring sub-part (see figure 2), and the three anchoring sub-parts are connected on the surface of the external sleeve 3 in the connecting part in an articulated manner. The anchor subassembly may be free to rotate about the hinge axis through a range of angles.
The telescopic arm 8 has the function that when the sensor is pushed towards the bottom of the mounting hole, the sensor can be folded and attached, and after the sensor is conveyed to the bottom, the telescopic arm 8 can be tightly supported on the hole wall. In order to reduce the resistance in the propelling process, the telescopic arm 8 is designed to be in a concave streamline shape. Selecting steel with higher rigidity as a material; in order to save materials, a hollow thin-wall cylinder with the wall thickness of 1mm is adopted.
The torsion spring 4 is an energy storage structure. In the sensor propelling process, the telescopic arm 8 can compress the torsion spring 4 to store energy when attached to the inner side, and the torsion spring 4 releases elastic potential energy to firmly fix the telescopic arm 8 on the hole wall when the sensor reaches a preset position. The design is as follows: the material is made of stainless spring steel with excellent elasticity, the wire diameter is 2mm, the shaft diameter is set to be 1cm, the horizontal wheelbase is 1cm, the free length is 2cm, and the plane included angle of the two free lengths is 30 degrees.
A wedge-shaped groove consisting of a component A5, a component B6 and a component C7. Both members a5, B are composed of two single pieces; the member a5 is welded to the outer sleeve 3 in the coupling part, the shape of which is shown in fig. 2; member B6 is welded to member C7, member B6 is the same shape as member a5, but the distance between the two halves of member B6 is greater than the distance between the two halves of member B6, so that member B6 can be staggered from the two halves of member a5 when articulated, the two halves of member B6 are required to be positioned outside to protect torsion spring 4 and to be pushed down to the bottom of the hole smoothly during sensor installation, and a pair of parallel holes with the same diameter are provided for articulation at a position intermediate member B6 and member a 5. The member C7 is in the shape of a square 2cm × 2cm, the end of which is welded to the telescopic arm 8 in a gradual manner (as shown in fig. 3), and is designed in such a shape for two reasons: firstly, the torsion spring 4 is protected in the process of pushing the steel wire to the bottom of the hole; secondly, when the sensor anchor head is subjected to backward tension caused by deformation, the telescopic arm 8 can be prevented from generating larger rotation, so that the stability of anchoring is ensured.
The coupling member is composed of an inner sleeve 2, an outer sleeve 3, etc. (see fig. 2). Its main function is to organically combine the sensor with the anchoring part.
The embedded sleeve 2 is a hollow cylinder made of steel, and requires high rigidity. The front end of the external sleeve is in a threaded screw shape, the diameter of the external sleeve is slightly smaller than that of the external sleeve 3, and the external sleeve 3 can be connected with the front end of the external sleeve through a bolt; the rear end is set to be a hollow semi-cylinder (as shown in figure 2), the bowl buckle 1 is arranged in the middle, the width of the bowl buckle 1 is designed to be smaller than the width of a groove of an anchor head of the sensor, and the bowl buckle 1 is buckled in the groove of the anchor head to enable the embedded sleeve 2 and the sensor to be a stressed whole in a bolt connection mode.
The external sleeve 3 is a hollow cylinder made of steel, and the rigidity is required to be good. The inner wall of the rear end cylinder is provided with threads, the rear end cylinder can be connected with the embedded sleeve 2 through bolts, and the bolts have good common stress characteristics.
The friction component consists of two parts. The part is the outside of the telescopic arm 8, and the part can contact with the hole wall, so the polishing treatment is carried out, and the lubricant is coated, mainly in order to weaken the friction between the hole wall and the telescopic arm 8 in the process of pushing the sensor to the mounting hole. The other part is the warping tail end of the telescopic arm 8, the inner side of the telescopic arm is sleeved with the rubber friction sheet 9, the sensor is used for generating backward pulling force under the influence of surrounding rock deformation, the friction force between the telescopic arm 8 and the hole wall is increased, and the effective adhesion between the telescopic arm 8 and the hole wall is met.
Before the installation of the on-site monitoring sensor is implemented, the specific diameter of the embedded sleeve 2 and the specific diameter of the external sleeve 3 are determined according to the diameter of the anchor head, and the positions of the three wedge grooves are reasonably arranged according to the diameter of the external sleeve 3. Since the dimensions of the sensors have not yet formed a uniform standard, and the dimensions thereof are different, the dimensions of the member A5, the member B6 and the member C7 in the wedge-shaped groove are also adjusted appropriately according to the particular sensor.
The front end of the embedded sleeve 2 is provided with a threaded screw rod, so that the embedded sleeve is conveniently connected with the external sleeve 3 in a bolt mode, the rear end of the embedded sleeve is provided with a semi-cylindrical shape, the bowl buckle 1 is attached, and the width of the bowl buckle 1 is determined according to the width of the anchor head groove. The bowl buckle 1 is buckled on the anchor head groove, and two ends of the bowl buckle are screwed with the embedded sleeve 2 through semi-cylindrical bolts respectively, so that the sensor anchor head and the embedded sleeve 2 can be fixed together.
The inner wall of the rear end of the external sleeve 3 is provided with threads so as to form a bolted connection relation with the front end screw of the internal sleeve 2. The middle position evenly distributes the distance of three lugs A5 and two lugs A5 in the wedge-shaped groove along the circumference, welds are carried out, and the lugs are ground into a horizontal torsion spring platform.
Depending on the distance of the two ears of member A5, member B6 and member C7 in the wedge-shaped slot are sized and welded. Wherein the end of the member C7 is designed to be tapered to facilitate welding of the telescopic arm 8.
And finishing the manufacture of the size and the shape of the telescopic rod according to the design requirement. The telescopic rod is welded with a component C7, the tail end of the telescopic arm 8 is designed to be warped, the rubber friction sheet 9 is sleeved on the inner side of the telescopic arm, the friction part of the telescopic arm and the hole wall is polished, and lubricant is coated on the friction part.
And machining the torsion spring 4 according to design requirements. The torsion spring 4, the wedge-shaped groove and the telescopic arm 8 are connected in a hinged mode. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. The utility model provides a vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring which characterized by: comprising a coupling component, an anchoring component and a friction component, wherein:
the connecting component comprises a sleeve, the sleeve is sleeved on the outer side of the vibrating wire type displacement sensor, and an anchor head of the vibrating wire type displacement sensor is connected with the anchoring component; the sleeve comprises an embedded sleeve and an external sleeve, a bowl buckle is arranged in the middle of the embedded sleeve of the connecting part, the width of the bowl buckle is designed to be smaller than the width of the groove of the anchor head of the sensor, and the bowl buckle can be buckled in the groove of the anchor head to enable the embedded sleeve and the sensor to form a stressed whole;
the anchoring part comprises a plurality of anchoring sub-parts which are connected to the surface of the external sleeve in a hinged mode, each anchoring sub-part comprises a torsion spring, a telescopic arm and a wedge-shaped groove, the wedge-shaped groove is formed in the surface of the external sleeve, the torsion springs are arranged in the wedge-shaped grooves, one end of each telescopic arm is connected with the corresponding wedge-shaped groove in a hinged mode, and the other end of each telescopic arm is stably supported on the hole wall of the mounting hole through telescopic action, so that the vibrating wire type displacement sensor does not move;
the friction component is arranged at the end part of the telescopic arm in the anchoring component, the first elastic component of the friction component is arranged at the outer side of the telescopic arm, the surface of the friction component is polished, and lubricant is coated on the surface of the friction component.
2. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 1, wherein: the external sleeve is sleeved outside the embedded sleeve, the front end of the embedded sleeve is in a threaded screw rod shape and is in bolted connection with the external sleeve, and the rear end of the embedded sleeve is a hollow semi-cylinder.
3. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 2, wherein: the number of the anchoring sub-components is three, and the anchoring sub-components are uniformly distributed along the circumference of the external sleeve.
4. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 2, wherein: the inner side of the external sleeve is provided with threads to be connected with the bolt of the internal nested sleeve.
5. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 1, wherein: the telescopic arm comprises an arc-shaped arm and a connecting piece, the connecting piece is matched with the wedge-shaped groove and can be detachably assembled with the wedge-shaped groove, and the arc-shaped arm is connected with the connecting piece.
6. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 1, wherein: the friction component further comprises a second elastic component, and the second elastic component is arranged at the warping tail end of the telescopic arm.
7. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 1, wherein: the wedge-shaped groove comprises a component A, a component B and a component C, wherein the component A and the component B are composed of two single pieces, the component A is welded on an external sleeve in a connecting part, the two single pieces of the component B are welded on two sides of the component C, the shape of the component B is the same as that of the component A, the distance between the two single pieces of the component B is larger than that between the two single pieces of the component A, the component B and the two single pieces of the component A can be arranged in a staggered mode during hinging, and a pair of parallel holes with the same hole diameter are formed in the middle positions of the component B and the component A and used for hinging.
8. The vibrating string type displacement sensor anchoring device for monitoring the surrounding rock of the tunnel engineering as claimed in claim 1, wherein: the torsion spring can compress the torsion spring to store energy when the telescopic arm is attached to the inner side, and the torsion spring releases elastic potential energy when the sensor reaches a preset position so as to firmly fix the telescopic arm on the hole wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052649.2A CN109356648B (en) | 2018-09-10 | 2018-09-10 | A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052649.2A CN109356648B (en) | 2018-09-10 | 2018-09-10 | A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356648A CN109356648A (en) | 2019-02-19 |
| CN109356648B true CN109356648B (en) | 2020-04-21 |
Family
ID=65350771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811052649.2A Active CN109356648B (en) | 2018-09-10 | 2018-09-10 | A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356648B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031894B (en) * | 2019-04-26 | 2021-04-13 | 山东大学 | Automatic anchoring installation sleeve for advanced geological prediction sensor by tunnel seismic wave method |
| CN110410124A (en) * | 2019-08-21 | 2019-11-05 | 周艳君 | Anchoring process and anchorage element device can be recycled in one kind falling leaf formula |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254554A (en) * | 1978-03-23 | 1981-03-10 | Dea Digital Electronic Automation, S.P.A. | Connection unit for mounting a tool with precision and reliability on a machine, particularly a measuring machine |
| CN1038331A (en) * | 1988-12-08 | 1989-12-27 | 徐浩冠 | Wave-ring type rotary-piston engine |
| CN101509253A (en) * | 2009-03-17 | 2009-08-19 | 武汉武大巨成加固实业有限公司 | Block-wedge-type self-locking inner anchor head |
| CN102854525A (en) * | 2012-09-18 | 2013-01-02 | 中国科学院武汉岩土力学研究所 | Omnidirectional cataclastic rock mass deep hole installation and recovery device of microseismic unidirectional sensor |
| CN102953364A (en) * | 2012-11-23 | 2013-03-06 | 同济大学 | Multilayer blade-typed multipoint displacement metre anchor head used for soft soil layer |
| CN105717537A (en) * | 2016-03-25 | 2016-06-29 | 中国科学院武汉岩土力学研究所 | Random-direction whole-hole section three-direction rigid coupling sensor installing and recycling device |
| CN106149663A (en) * | 2016-07-15 | 2016-11-23 | 浙江大学宁波理工学院 | Measure the embedded device of the anchor disc of the instable layer thickness of breathing slight slope body |
| CN206111239U (en) * | 2016-07-06 | 2017-04-19 | 河南焦煤能源有限公司九里山矿 | Mine roof absciss layer appearance anchor ware installation device |
-
2018
- 2018-09-10 CN CN201811052649.2A patent/CN109356648B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254554A (en) * | 1978-03-23 | 1981-03-10 | Dea Digital Electronic Automation, S.P.A. | Connection unit for mounting a tool with precision and reliability on a machine, particularly a measuring machine |
| CN1038331A (en) * | 1988-12-08 | 1989-12-27 | 徐浩冠 | Wave-ring type rotary-piston engine |
| CN101509253A (en) * | 2009-03-17 | 2009-08-19 | 武汉武大巨成加固实业有限公司 | Block-wedge-type self-locking inner anchor head |
| CN102854525A (en) * | 2012-09-18 | 2013-01-02 | 中国科学院武汉岩土力学研究所 | Omnidirectional cataclastic rock mass deep hole installation and recovery device of microseismic unidirectional sensor |
| CN102953364A (en) * | 2012-11-23 | 2013-03-06 | 同济大学 | Multilayer blade-typed multipoint displacement metre anchor head used for soft soil layer |
| CN105717537A (en) * | 2016-03-25 | 2016-06-29 | 中国科学院武汉岩土力学研究所 | Random-direction whole-hole section three-direction rigid coupling sensor installing and recycling device |
| CN206111239U (en) * | 2016-07-06 | 2017-04-19 | 河南焦煤能源有限公司九里山矿 | Mine roof absciss layer appearance anchor ware installation device |
| CN106149663A (en) * | 2016-07-15 | 2016-11-23 | 浙江大学宁波理工学院 | Measure the embedded device of the anchor disc of the instable layer thickness of breathing slight slope body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356648A (en) | 2019-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11268383B2 (en) | Type of energy-absorbing rock bolt device with umbrella-shaped structure | |
| CN109356648B (en) | A vibrating string formula displacement sensor anchor for tunnel engineering country rock monitoring | |
| CN208057139U (en) | A kind of tension and compression coupling deformation anchor pole | |
| CN210660145U (en) | Coal mine tunnel supporting device | |
| CN109723481B (en) | Stock tray and end thick liquid stopper integral type structure | |
| CN109915188A (en) | A kind of high-strength surely hinder detachable pushes back half davit and wall rock deformation monitoring method | |
| CN102304919B (en) | Device and anchor rod capable of being arranged on anchor rod anchoring section or/ and free-section rod body | |
| CN110082433A (en) | A kind of auxiliary machinery and fixing means suitable for fixed sensor | |
| CN213173756U (en) | Deep foundation pit slope supporting structure | |
| CN209727114U (en) | A kind of embedding device for surveying convergence measuring point for tunnel | |
| CN210976604U (en) | Dysmorphism pier stud template reinforced structure | |
| CN209652925U (en) | A kind of ground anchored structure | |
| CN206862304U (en) | Spring acoustic emission sensor erecting device | |
| CN111101984A (en) | Tunnel supporting mechanism | |
| CN213235738U (en) | Adjustable positioning anchor bolt installed in matched mode | |
| CN113756326B (en) | Deep weak soil foundation ditch pit bottom utility tunnel environmental protection formula underground structure supporting device | |
| CN211080337U (en) | Stone mine side slope monitoring device | |
| CN210004907U (en) | large-scale hydraulic engineering crack expansion joint change detection device | |
| CN218598346U (en) | Drilling pump for oil field drilling | |
| CN220039408U (en) | Pre-buried monitoring component | |
| CN218780371U (en) | Device for preventing loss of grouting liquid of anchor rod at top of roadway | |
| CN214330658U (en) | Novel anchor rod and anchor cable supporting device | |
| CN218580640U (en) | Anchor rod positioner | |
| CN213978999U (en) | High slope initiative protection network fixing device | |
| CN215261691U (en) | Tunnel surrounding rock inside multipoint displacement monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |