CN210317366U - Large-deformation monitoring anchor rod for salt mine - Google Patents
Large-deformation monitoring anchor rod for salt mine Download PDFInfo
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- CN210317366U CN210317366U CN201921340799.3U CN201921340799U CN210317366U CN 210317366 U CN210317366 U CN 210317366U CN 201921340799 U CN201921340799 U CN 201921340799U CN 210317366 U CN210317366 U CN 210317366U
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Abstract
The utility model discloses a salt deposit big deformation monitoring stock, include: the device comprises an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc, a glass fiber reinforced plastic anchor rod body, a friction sleeve, a deformation monitoring unit and a sealing stirrer; the glass fiber reinforced plastic anchor rod body is sequentially connected with an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc and a deformation monitoring unit stay wire from the front end to the rear end; the friction sleeve is sequentially connected with a sealing disc and a sealing stirrer from front to back; the deformation monitoring unit is fixedly connected at the front end of the sealed stirrer; the monitoring anchor rod is fastened on the surface of the surrounding rock to be supported and monitored through the anchor disc, the pressure monitoring unit and the anchor nut. The large-deformation monitoring anchor rod for the salt mine integrates multiple functions of supporting, pressure monitoring and displacement deformation monitoring, is particularly suitable for monitoring disturbance stress and convergence deformation of surrounding rocks of underground mining roadways and stoping access roads of the salt mine and disaster early warning.
Description
Technical Field
The utility model relates to a mining engineering field especially relates to a salt deposit big deformation monitoring stock.
Background
The potassium salt as the main source of the potash fertilizer is an important strategic resource and has irreplaceability. China is a big agricultural country, and the development and utilization of sylvite ores play a crucial role in guaranteeing national food safety supply. With the continuous development of mining concepts and mining equipment, underground potassic salt mine mining is widely concerned by researchers due to large mining scale and high production efficiency, and a plurality of research achievements are obtained, such as a mining method of underground salt mine disclosed in Chinese patent ZL 201610648781.4. However, because the salt rock has unique characteristics of poor mineralization characteristics and mechanical properties, remarkable rheological characteristics and the like, underground mining faces a series of disaster problems. Among them, the great deformation damage of underground development roadways and stoping access roads is one of the most typical bottleneck problems.
In recent years, the rapidly developed large deformation anchor rods (also called pressure release anchor rods, yielding anchor rods, energy absorption anchor rods and the like) provide effective solutions for the problems. The anchor rod is a Roofex large-deformation anchor rod of Atlas Copco company, a D-bolt of Norway, a constant-resistance large-deformation anchor rod disclosed by China mining university application patent CN101858225A, a self-adaptive pressure-shear anchor rod disclosed by Chongqing university application patent CN208267884U, an anchor rod capable of adapting to surrounding rock deformation disclosed by Chengdu Guangxiang technology limited company application patent CN108343457A, a large-deformation energy-absorbing anchor rod with a simplified structure disclosed by northeast university application patent CN108547649A and the like. Such bolts can tolerate large deformations and provide sustained bolting resistance through different mechanisms of action.
However, through the discovery of numerous large-deformation anchor rods at present, the following problems are also found for the special high-salt corrosion environment of salt mines and the extremely low rock strength: the material of the large-deformation anchor rod has poor corrosion resistance, so that the support resistance of the anchor rod is reduced; the excessive constant resistance causes the outer anchor end to be pressed into the rock body and fail; the cost of partial large-deformation anchor rods or materials is high, or the processing technology is complex, or the construction difficulty is high, so that the supporting requirement of the underground salt mine mining surrounding rock is difficult to meet; furthermore, there is a lack of functionality in combination with monitoring means.
SUMMERY OF THE UTILITY MODEL
Based on the problems existing in the prior art, the utility model aims to provide a salt mine large deformation monitoring anchor rod, which can solve the problem that the resistance of anchor rod support is reduced due to poor corrosion resistance of the material existing in the existing large deformation anchor rod; the excessive constant resistance causes the outer anchor end to be pressed into the rock body and fail; the cost of partial large-deformation anchor rods or materials is high, or the processing technology is complex, or the construction difficulty is high, so that the supporting requirement of the underground salt mine mining surrounding rock is difficult to meet.
The utility model aims at realizing through the following technical scheme:
the utility model discloses embodiment provides a salt deposit big deformation monitoring stock, include: the device comprises an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc, a glass fiber reinforced plastic anchor rod body, a friction sleeve, a deformation monitoring unit and a sealing stirrer; wherein the content of the first and second substances,
the anchoring nut, the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially sleeved on the glass fiber reinforced plastic anchor rod body from the front end to the rear end, the anchoring nut is screwed and fixed at the front end of the glass fiber reinforced plastic anchor rod body, and the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially pressed on the glass fiber reinforced plastic anchor rod body;
the sealing disc is fixed on the end face of the friction sleeve;
the friction sleeve penetrates through the rear end opening of the reducing through hole of the glass fiber reinforced plastic anchor rod body and is fixedly connected with the sealing stirrer;
the deformation monitoring unit is arranged in the reducing through hole of the friction sleeve, the front end of the deformation monitoring unit is fixedly connected with the sealing stirrer, and a data wire connected with the deformation monitoring unit is led out from the rear end of the anchor rod body through a through channel arranged in the glass fiber reinforced plastic anchor rod body;
and the pressure monitoring unit is connected with a data line.
By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides a salt deposit monitoring stock that warp greatly, its beneficial effect is:
the glass fiber reinforced plastic anchor rod body can resist high-salt corrosion; by respectively arranging the pressure monitoring unit and the deformation monitoring unit, the surrounding rock pressure and the surrounding rock deformation acting on the anchor rod can be monitored in real time in the whole life cycle of the anchor rod. The monitoring anchor rod is simple in structure, low in cost, capable of coordinating with surrounding rocks to deform greatly, suitable for constant anchoring and supporting resistance of salt rocks and capable of maintaining stability of the salt rock surrounding rocks. The large-deformation monitoring anchor rod for the salt mine is particularly suitable for monitoring disturbance stress and convergence deformation of surrounding rocks of an underground mining roadway and a stoping access road of the salt mine and early warning of disasters, and is a novel large-deformation monitoring anchor rod integrating multiple functions of supporting, pressure monitoring and displacement deformation monitoring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of a salt mine large deformation monitoring anchor rod provided by the embodiment of the utility model;
fig. 2 is a schematic view of an embodiment of a salt mine large deformation monitoring anchor rod provided by an embodiment of the present invention;
the part names corresponding to the marks in the figure are as follows: 1-anchoring a nut; 2-a pressure monitoring unit; 201-data line of the pressure monitoring unit; 3-anchor disc; 4-an isolation sleeve; 5-sealing the disc; 501-pins; 6-glass fiber reinforced plastic anchor rod body; 7-a friction sleeve; 8-a deformation monitoring unit; 801-data lines of the deformation monitoring unit; 802-a pull wire of the deformation monitoring unit; 9-sealing the stirrer; 10-monitoring the anchor rod; 11-surrounding rock; 12-an anchor; 13-drilling.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.
As shown in fig. 1, the embodiment of the utility model provides a salt deposit monitoring stock that warp greatly, a serial communication port, include: the device comprises an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc, a glass fiber reinforced plastic anchor rod body, a friction sleeve, a deformation monitoring unit and a sealing stirrer; wherein the content of the first and second substances,
the anchoring nut, the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially sleeved on the glass fiber reinforced plastic anchor rod body from the front end to the rear end, the anchoring nut is screwed and fixed at the front end of the glass fiber reinforced plastic anchor rod body, and the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially pressed on the glass fiber reinforced plastic anchor rod body;
the sealing disc is fixed on the end face of the friction sleeve;
the friction sleeve penetrates through the rear end opening of the reducing through hole of the glass fiber reinforced plastic anchor rod body and is fixedly connected with the sealing stirrer;
the deformation monitoring unit is arranged in a reducing through hole of the friction sleeve (namely in a through hole space between the rear end of the glass fiber reinforced plastic anchor rod body and the sealing stirrer), the front end of the deformation monitoring unit is fixedly connected with the sealing stirrer, and a data wire connected with the deformation monitoring unit is led out from the rear end of the glass fiber reinforced plastic anchor rod body through a through channel arranged in the glass fiber reinforced plastic anchor rod body;
and the pressure monitoring unit is connected with a data line.
In the above-mentioned large deformation monitoring stock in salt deposit, the glass steel stock body is integrated into one piece cavity glass steel stock form structure, and the front end of this glass steel stock body is equipped with the external screw thread, and the rear end body of rod of this glass steel stock body is the big footpath body of rod of round platform form that the diameter is greater than the front end body of rod.
In the salt mine large deformation monitoring anchor rod, the friction sleeve is a hard rubber cylinder with a plurality of thread-shaped grooves on the outer surface, and the inside of the friction sleeve is provided with a reducing through hole matched with the shape of the rear end rod in the glass fiber reinforced plastic anchor rod body. The friction sleeve of this kind of structure can form spacingly for the glass steel stock body rear end of reducing structure at the external diameter, cooperates the friction sleeve to compress tightly pressure monitoring unit, anchor tray, spacer sleeve, sealed dish on the glass steel stock body by anchor nut from the past to back, and the rear end does not need gland nut, and the structure is simple relatively.
In the salt mine large deformation monitoring anchor rod, the pressure monitoring unit adopts an annular pressure box and is a pressure sensing unit;
the deformation monitoring unit adopts a stay wire type displacement sensor, and a stay wire of the deformation monitoring unit is connected with the glass fiber reinforced plastic anchor rod body.
In the above-mentioned salt deposit large deformation monitoring stock, sealed dish is fixed do on the telescopic terminal surface of friction: the sealing disc is fixed on the end face of the friction sleeve through a plurality of pins uniformly arranged on the sealing disc.
The salt mine large deformation monitoring anchor rod has simple structure, corrosion resistance of materials and lower cost, can cooperatively deform with a larger stroke of surrounding rocks, and simultaneously provides constant supporting force; in addition, the anchor rod can monitor the deformation and disturbance surrounding rock stress of the anchor rod supporting area in the whole life cycle through the deformation monitoring unit and the pressure monitoring unit, and is particularly suitable for maintenance, monitoring and early warning of large-deformation roadways, stope access roads and the like in the underground salt mine mining process.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The big deformation monitoring stock in salt deposit of this embodiment includes: the device comprises an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc, a glass fiber reinforced plastic anchor rod body, a friction sleeve, a deformation monitoring unit and a sealing stirrer;
the glass fiber reinforced plastic anchor rod body is sequentially connected with an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc and a deformation monitoring unit stay wire from the front end to the rear end;
the friction sleeve is sequentially connected with a sealing disc and a sealing stirrer from front to back;
the deformation monitoring unit is fixedly connected to the front end of the sealed stirrer;
the glass fiber reinforced plastic anchor rod body is a hollow integrally-formed glass fiber reinforced plastic anchor rod body, the front end of the glass fiber reinforced plastic anchor rod body is provided with external threads, and the rear end of the glass fiber reinforced plastic anchor rod body is a round table-shaped large-diameter rod body, so that the glass fiber reinforced plastic anchor rod body forms a reducing rod body which is thin in the front and thin in the rear at the middle and rear;
the friction sleeve is a hard rubber cylinder, a thread-shaped groove is formed in the periphery of the friction sleeve, a through hole is formed in the friction sleeve, the rear end of the through hole is a frustum-shaped large-diameter section, and a through hole matched with the variable-diameter rod body at the middle rear end of the glass fiber reinforced plastic anchor rod body is formed;
the pressure monitoring unit adopts an annular pressure box, the deformation monitoring unit adopts a stay wire type displacement sensor, and monitoring data can be transmitted to a monitoring base station in real time.
The utility model discloses a salt deposit major deformation monitoring stock is one kind and is applicable to salt deposit underground mining tunnel, the big calamity prevention and control of deformation of stoping access country rock and monitoring early warning device, the utility model discloses a theory of operation refers to figure 2, specifically does:
the method comprises the following steps of integrally installing a salt mine large-deformation monitoring anchor rod into a drill hole, and enabling a pressure monitoring unit and an anchor disc to be attached to a rock wall to provide initial pre-tightening anchoring force by screwing an anchoring nut; the glass fiber reinforced plastic anchor rod body is isolated from the anchoring body through the isolating sleeve, so that the glass fiber reinforced plastic anchor rod body can freely slide in the drilled hole; when the deformation of the surrounding rock is gradually increased due to creep deformation or other damage, the stress applied to the monitoring anchor rod is continuously increased, the glass fiber reinforced plastic anchor rod body starts to slide, and the circular truncated cone at the rear end is gradually pressed into the friction sleeve, so that the supporting resistance is gradually increased; until the pulling force reaches a set constant resistance threshold value, the round table-shaped large-diameter end at the rear end of the glass fiber reinforced plastic anchor rod body is completely extruded into the friction sleeve and continues to slide, and continuous and stable supporting resistance is provided through extrusion friction between the round table-shaped large-diameter end at the rear end of the glass fiber reinforced plastic anchor rod body and the friction sleeve; meanwhile, the stay wire of the deformation monitoring unit is stretched along with the sliding of the glass fiber reinforced plastic anchor rod body, and the real-time deformation information is transmitted to the monitoring base station; the stress transmitted by the pressure monitoring unit due to the deformation of the surrounding rock is transmitted to the monitoring base station in real time; when the supporting resistance provided by the anchoring device is enough to maintain the stability of the surrounding rock and the deformation is not continuously increased any more, the sliding is stopped; on the contrary, the glass fiber reinforced plastic anchor rod body continuously slides until the early warning of damage is realized, and the real-time monitoring of the pressure and the deformation of the large-deformation anchor rod in the whole life cycle is realized.
Preferably, the pressure monitoring unit 2 adopts an annular pressure box (shown in fig. 1), belongs to a pressure sensing unit, and can acquire surrounding rock pressure acting on the large-deformation monitoring anchor rod in real time, namely monitoring the supporting resistance provided by the anchor rod at the moment;
preferably, the isolation sleeve 4 is a heat-shrinkable tube (see fig. 1), and the anchor rod body is isolated from the anchoring body by the isolation sleeve, so that the anchor rod body is prevented from being bonded, and the coordinated sliding deformation between the anchor rod body and the surrounding rock is smoothly realized;
a plurality of pins 501 (see fig. 1) are provided on the seal disk 5.
Preferably, the sealing disc 5 is made of glass fiber reinforced plastic, and a through hole with internal threads is processed along the middle part of the sealing disc 5 for screwing the pin 501; the inner side of the sealing disc 5 is provided with internal threads which are matched with external threads at the front end of the anchor rod body 6, and the friction sleeve 7 is screwed tightly to prevent anchoring agent from flowing into the clearance between the anchor rod body 6 and the friction sleeve 7 to cause fixed connection and lose the sliding function; in addition, the pin 501 is in interference fit with the drill hole at the front end of the friction sleeve 7 and is used for rotationally monitoring the anchor rod to drive the sealing stirrer to break the resin anchoring agent;
the glass fiber reinforced plastic anchor rod body 6 is a hollow rod body and is integrally processed and molded by glass fiber reinforced plastic (see figure 1).
Preferably, the front end of the glass fiber reinforced plastic anchor rod body 6 is 18mm in diameter, and external threads are processed at the front end of the glass fiber reinforced plastic anchor rod body for screwing the anchoring nut 1 and the sealing disc 5; the rear end is a circular truncated cone-shaped large-diameter section, the length of the inclined plane section is 3cm, the diameter of the large-diameter section is 22mm, and the length is usually 10 cm; the rear end is provided with an internal thread small hole for connecting a pull wire 802 of the deformation monitoring unit 8; the central through channel is used for leading out the deformation monitoring unit data line 801;
preferably, the friction sleeve 7 is made of hard rubber (see fig. 1), and is provided with a thread-like groove on the outer surface to increase the anchoring force between the sleeve and the anchoring body; typically, the friction sleeve 7 has an outer diameter of 26mm and a front end inner diameter of 21 mm; the diameter of the large-diameter section at the rear end is 22mm, and the length is 20 cm; the tail part of the rear end is provided with internal threads for connecting the sealed stirrer 9;
preferably, the deformation monitoring unit 8 adopts a stay wire type displacement sensor, as shown in fig. 1, and can acquire the sliding deformation distance of the glass fiber reinforced plastic anchor rod body 6 in the friction sleeve 7 in real time, namely the surrounding rock deformation in the monitoring range;
preferably, the sealing agitator 9 is made of stainless steel, and as shown in fig. 1, has an internal thread on its front end for connecting the friction sleeve 7, avoiding the failure of the anchor to flow into the friction sleeve; the rear end is provided with a stirring tooth for puncturing and stirring the resin anchoring agent.
The utility model discloses a big deformation monitoring stock, generally speaking simple structure, high salt corrosion resistance, cost are lower, can coordinate big deformation with the country rock to provide the invariable anchor support resistance that is applicable to the salt rock, on maintaining the stable basis of salt mine country rock, can monitor in real time in the full life cycle of monitoring stock and act on the country rock pressure and the country rock deformation on the stock. The large deformation monitoring anchor rod is particularly suitable for monitoring disturbance stress and convergence deformation of surrounding rocks of salt mine underground mining roadways and stoping access roads and disaster early warning, and integrates multiple functions of supporting, pressure monitoring and displacement deformation monitoring.
Example (b):
when the resin anchoring agent is selected, the salt mine large deformation monitoring anchor rod of the embodiment has a specific implementation scheme as follows:
as shown in figure 2, the assembly sequence of the large deformation monitoring anchor rod for the salt mine of the utility model is that ① fixedly connects a deformation monitoring unit with a sealed stirrer 9, ② connects the ① middle device with the rear end of a glass fiber reinforced plastic anchor rod body 6, ③ puts the ② middle device into a friction sleeve 7 according to the correct direction and screws the sealed stirrer 9, ④ screws a sealing disc into the glass fiber reinforced plastic anchor rod body from the front end and inserts and screws a pin 501, ⑤ sleeves a separation sleeve 4 from the front end to complete the assembly of the stress release anchor rod of the utility model;
constructing a drill hole 13 at a to-be-supported (monitored) part of an engineering rock body, wherein the length of the drill hole 13 is matched with that of a monitoring anchor rod 10, and the diameter of the drill hole is slightly larger than the maximum outer diameter of the monitoring anchor rod 10 so as to smoothly insert the monitoring anchor rod;
a rapid hardening resin anchoring cartridge and a slow hardening resin anchoring cartridge are sequentially placed in the drill hole 13, and the monitoring anchor rod 10 of the utility model is placed in the drill hole 13;
the monitoring anchor rod 10 is pressed into the drill hole 13 in a rotating mode, the anchoring explosive roll is broken through the sealing stirrer 9 at the front end of the device in a pressing mode and is uniformly stirred, and the whole drill hole is filled;
after the anchoring agent is solidified, an anchoring body 12 is formed and is tightly bonded with the surrounding rock 11, the front end of an anchor rod 10 exposed out of the outer wall of the rock body 11 is sequentially sleeved into the anchor disc 3 and the pressure monitoring unit 2, the anchoring nut 1 is screwed, and a certain pre-tightening force is applied;
the pressure monitoring unit 2 and the deformation monitoring unit 8 are connected with the handheld reading device to finish initial reading resetting and finally finish the installation of the monitoring anchor rod of the utility model;
when the deformation of the surrounding rock 11 is gradually increased due to creep deformation or other damage, so that the stress applied to the monitoring anchor rod is continuously increased, the glass fiber reinforced plastic anchor rod body 6 is isolated from the anchoring body 12 through the isolating sleeve 4, and the glass fiber reinforced plastic anchor rod body 6 can be ensured to freely slide in the drill hole 13; when the deformation of the surrounding rock 11 is gradually increased due to creep deformation or other damage, so that the stress applied to the monitoring anchor rod 10 is continuously increased, the glass fiber reinforced plastic anchor rod body 6 starts to slide, and the circular truncated cone at the rear end is gradually pressed into the friction sleeve 7 so that the supporting resistance is gradually increased; until the pulling force reaches a set constant resistance threshold value, the circular truncated cone-shaped large-diameter end at the rear end of the glass fiber reinforced plastic anchor rod body 6 is completely extruded into the friction sleeve 7 and continues to slide, and continuous and stable supporting resistance is provided through extrusion friction between the circular truncated cone-shaped large-diameter end at the rear end of the glass fiber reinforced plastic anchor rod body 6 and the friction sleeve 7; meanwhile, the stay wire 802 of the deformation monitoring unit 8 is stretched along with the sliding of the glass fiber reinforced plastic anchor rod body 6, and the real-time deformation information is transmitted to the monitoring base station; the stress transmitted by the pressure monitoring unit 2 due to the deformation of the surrounding rock is also transmitted to the monitoring base station in real time; when the supporting resistance provided by the anchoring device is enough to maintain the stability of the surrounding rock and the deformation is not continuously increased any more, the sliding is stopped; on the contrary, the glass fiber reinforced plastic anchor rod body 6 continuously slides until the early warning of damage is realized, and the real-time monitoring of the pressure and the deformation of the large-deformation anchor rod in the whole life cycle is realized.
The utility model discloses a salt deposit is out of shape monitoring stock greatly through with the big deformation of coordination of country rock, provide the invariable anchor that is applicable to the salt rock and strut resistance and be monitoring the country rock pressure and the country rock deformation that act on the stock in real time in monitoring stock full life cycle. Simple structure, high salt corrosion resistance and lower cost.
It will be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for the convenience and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a salt deposit big deformation monitoring stock which characterized in that includes: the device comprises an anchoring nut, a pressure monitoring unit, an anchoring tray, an isolating sleeve, a sealing disc, a glass fiber reinforced plastic anchor rod body, a friction sleeve, a deformation monitoring unit and a sealing stirrer; wherein the content of the first and second substances,
the anchoring nut, the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially sleeved on the glass fiber reinforced plastic anchor rod body from the front end to the rear end, the anchoring nut is screwed and fixed at the front end of the glass fiber reinforced plastic anchor rod body, and the pressure monitoring unit, the anchoring tray, the isolating sleeve, the sealing disc and the friction sleeve are sequentially pressed on the glass fiber reinforced plastic anchor rod body;
the sealing disc is fixed on the end face of the friction sleeve;
the friction sleeve penetrates through the rear end opening of the reducing through hole of the glass fiber reinforced plastic anchor rod body and is fixedly connected with the sealing stirrer;
the deformation monitoring unit is arranged in the reducing through hole of the friction sleeve, the front end of the deformation monitoring unit is fixedly connected with the sealing stirrer, and a data line connected with the deformation monitoring unit is led out from the rear end of the glass fiber reinforced plastic anchor rod body through a through channel arranged in the glass fiber reinforced plastic anchor rod body;
and the pressure monitoring unit is connected with a data line.
2. The large deformation monitoring anchor rod for salt mine of claim 1, wherein the glass fiber reinforced plastic anchor rod body is an integrally formed hollow glass fiber reinforced plastic long rod-shaped structure body, the front end of the glass fiber reinforced plastic anchor rod body is provided with external threads, and the rear end rod body of the glass fiber reinforced plastic anchor rod body is a truncated cone-shaped large diameter rod body with a diameter larger than that of the front end rod body.
3. The large-deformation monitoring anchor rod for the salt mine according to claim 1 or 2, wherein the friction sleeve is a hard rubber cylinder with a plurality of thread-shaped grooves on the outer surface, and the diameter-variable through hole arranged inside the friction sleeve is matched with the shape of the rear end rod in the glass fiber reinforced plastic anchor rod body.
4. The salt mine large deformation monitoring anchor rod according to claim 1 or 2, wherein the pressure monitoring unit adopts an annular pressure box;
the deformation monitoring unit adopts a stay wire type displacement sensor, and a stay wire of the deformation monitoring unit is connected with the glass fiber reinforced plastic anchor rod body.
5. A salt mine large deformation monitoring anchor rod according to claim 1 or 2, wherein the sealing disc is fixed on the end face of the friction sleeve by: the sealing disc is fixed on the end face of the friction sleeve through a plurality of pins uniformly arranged on the sealing disc.
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| CN201921340799.3U CN210317366U (en) | 2019-08-16 | 2019-08-16 | Large-deformation monitoring anchor rod for salt mine |
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| CN201921340799.3U CN210317366U (en) | 2019-08-16 | 2019-08-16 | Large-deformation monitoring anchor rod for salt mine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577360A (en) * | 2020-06-12 | 2020-08-25 | 中南大学 | Recoverable acquisition instrument for real-time observation of stress characteristic and vibration characteristic of stope surrounding rock and use method |
| CN112523806A (en) * | 2020-10-23 | 2021-03-19 | 中铁二局集团有限公司 | Monitoring method for primary support and lining construction of upper and lower layer overlapped tunnels |
| CN112878323A (en) * | 2021-01-08 | 2021-06-01 | 中国水利水电科学研究院 | Assembled pre-stressed anchor cable structure |
| CN114592508A (en) * | 2022-03-02 | 2022-06-07 | 许攀攀 | Information-based integrated supervision equipment for geotechnical engineering investigation |
| CN114991867A (en) * | 2022-05-18 | 2022-09-02 | 中南大学 | High-order-section large-size chamber real-time state intelligent monitoring device and using method thereof |
| CN116950701A (en) * | 2023-05-06 | 2023-10-27 | 中山大学 | Rock-soil anchoring measurement integrated monitoring device |
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2019
- 2019-08-16 CN CN201921340799.3U patent/CN210317366U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577360A (en) * | 2020-06-12 | 2020-08-25 | 中南大学 | Recoverable acquisition instrument for real-time observation of stress characteristic and vibration characteristic of stope surrounding rock and use method |
| CN111577360B (en) * | 2020-06-12 | 2021-04-27 | 中南大学 | Use method of recoverable acquisition instrument for real-time observation of stress characteristic and vibration characteristic of stope surrounding rock |
| CN112523806A (en) * | 2020-10-23 | 2021-03-19 | 中铁二局集团有限公司 | Monitoring method for primary support and lining construction of upper and lower layer overlapped tunnels |
| CN112878323A (en) * | 2021-01-08 | 2021-06-01 | 中国水利水电科学研究院 | Assembled pre-stressed anchor cable structure |
| CN114592508A (en) * | 2022-03-02 | 2022-06-07 | 许攀攀 | Information-based integrated supervision equipment for geotechnical engineering investigation |
| CN114991867A (en) * | 2022-05-18 | 2022-09-02 | 中南大学 | High-order-section large-size chamber real-time state intelligent monitoring device and using method thereof |
| CN114991867B (en) * | 2022-05-18 | 2023-04-25 | 中南大学 | High-stage large-scale room real-time state intelligent monitoring device and application method thereof |
| CN116950701A (en) * | 2023-05-06 | 2023-10-27 | 中山大学 | Rock-soil anchoring measurement integrated monitoring device |
| CN116950701B (en) * | 2023-05-06 | 2024-03-26 | 中山大学 | Rock-soil anchoring measurement integrated monitoring device |
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