CN213926249U - Anchor rod capable of adjusting anchoring effect based on water content and stress change - Google Patents
Anchor rod capable of adjusting anchoring effect based on water content and stress change Download PDFInfo
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- CN213926249U CN213926249U CN202022296155.8U CN202022296155U CN213926249U CN 213926249 U CN213926249 U CN 213926249U CN 202022296155 U CN202022296155 U CN 202022296155U CN 213926249 U CN213926249 U CN 213926249U
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Abstract
The utility model discloses an anchor rod for adjusting anchoring effect based on water content and stress variation, wherein a stress adjusting tray for applying tensile force to the anchor rod is sleeved on the anchor rod, an external thread is processed on the anchor rod, a foaming agent conveying pipe for conveying foaming agent is wound on the external thread, and a foaming agent spraying opening for releasing foaming agent is arranged on the foaming agent conveying pipe; the external thread is wound with optical fibers, and the anchor rod is adhered with a stress-strain sensor for monitoring the stress between the anchor rod and the rock mass and a water content detection sensor for monitoring the water content of the gap between the anchor rod and the rock mass; the stress strain sensor is connected with the equipment control end through an optical fiber, and the water content detection sensor is connected with the equipment control end through a signal line. This stock can carry out real-time supervision to the stress between stock and the rock mass to acquire the mode that the rock mass destroys, in time fill between the adjacent rock mass of losing middle thin layer.
Description
Technical Field
The utility model belongs to the anchor rod device field, concretely relates to stock based on water content and stress change adjust anchoring effect.
Background
The functions of shipping, flood control and power generation are fully exerted since the operation of the three gorges project, and huge economic benefits are brought. In the operation process, the method also faces more engineering rock mass problems, wherein the most serious problem is the safety and stability of the rock mass at the hydro-fluctuation belt. The water level of the three gorges reservoir area can periodically change along with the alternation of seasons to form a hydro-fluctuation belt with the height of about 30m, and rock masses in the hydro-fluctuation belt undergo periodic alternation of dryness and humidity, so that damage is easily accumulated, and the safety problem of the rock masses is caused. And because the span of reservoir areas is large, rock mass structures in the hydro-fluctuation belt are also complex and various, and the stratosphere rock mass with the same trend is one of the more common structures. When the rock mass undergoes periodic alternation of dryness and wetness, the interpass cementation is weakened along with the alternation of dryness and wetness, so that the lamellar rock mass gradually breaks away from a bank slope to form local interpass void. Lose the adjacent rock mass of middle lamina on the one hand and water contact area grow when the water level rises, lose on the one hand and depend on the ability, thereby easily take place to drop and influence rock mass stability.
The anchor rod is used as a common rock mass reinforcing means and is widely applied to the prevention and control engineering of various engineering rock masses. Current traditional stock, the structure of accessible adjustment stock strengthens frictional force between stock and rock mass on the one hand, or adjusts the cementing material between stock and rock mass and strengthens the adhesion between stock and rock mass, and then reaches and strengthens the anchor effect. However, when the rock body cracks or falls off after being reinforced, the safety and stability of the rock body cannot be effectively protected, and the long-term safety and stability of the offset zone is realized.
On the other hand accessible carries out stress monitoring to the stock and comes the early warning, carries out stress monitoring to the stock and generally uses the fiber grating, can implant fiber into the fiber reinforced resin stock, also can lay the fiber grating with the stock surface, be under construction together with the stock. The stress change of the anchor rod is monitored and early warning is given out, but the defects of single function, short acting timeliness and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a stock based on water content and stress variation adjust anchoring effect, this stock can carry out real-time supervision to the stress between stock and the rock mass to acquire the mode that the rock mass destroys, in time fill between the adjacent rock mass of thin layer in the middle of losing, with the purpose that reaches the reinforced rock mass, guaranteed the safety and stability nature of rock mass.
In order to realize the technical characteristics, the purpose of the utility model is realized as follows: an anchor rod for adjusting anchoring effect based on water content and stress change comprises an anchor rod, wherein a stress adjusting tray for applying tensile force to the anchor rod is sleeved on the anchor rod, an external thread is processed on the anchor rod, a foaming agent conveying pipe for conveying a foaming agent is wound on the external thread, and a foaming agent spraying opening for releasing the foaming agent is formed in the foaming agent conveying pipe; the external thread is wound with optical fibers, and the anchor rod is adhered with a stress-strain sensor for monitoring the stress between the anchor rod and the rock mass and a water content detection sensor for monitoring the water content of the gap between the anchor rod and the rock mass; the stress strain sensor is connected with the equipment control end through an optical fiber, and the water content detection sensor is connected with the equipment control end through a signal line.
The inlet of the foaming agent conveying pipe is connected with a foaming agent storage and spraying device, and the foaming agent storage and spraying device is connected with an equipment control end for controlling the opening of the foaming agent storage and spraying device.
When anchoring, the stress adjustment tray contacts with the rock mass surface and provides anchoring pressure, and after receiving the equipment control end signal, adjusts anchoring pressure.
An installation groove is formed in one end, located at the stress adjusting tray, of the anchor rod, and the ends of the foaming agent conveying pipe, the signal wire and the optical fiber penetrate through the installation groove and then are connected with the control end of the equipment; the foaming agent conveying pipe, the signal wire and the optical fiber are all made of high-strength resin materials as protective layers.
The foaming agent eruption ports on the external threads in the same circle are uniformly distributed in four directions.
The stress strain sensor and the water content detection sensor are adhered to the outer surface of the anchor rod through high-strength resin.
The utility model discloses there is following beneficial effect:
1. this stock can carry out real-time supervision to the stress between stock and the rock mass to acquire the mode that the rock mass destroys, in time fill between the adjacent rock mass of thin layer in the middle of losing, with the purpose that reaches the reinforced rock mass, guaranteed the safety and stability nature of rock mass.
2. Through foretell foaming agent storage eruption device, can be when needs are filled, automatic control foaming agent storage eruption device spouts the foaming agent to carry the foaming agent conveyer pipe, and then carry the foaming agent to the rock mass crack through the foaming agent conveyer pipe, and then play the purpose of reinforcing the rock mass.
3. Through foretell stress adjustment tray can be through rotatory, and then increase the anchor power between stock and the rock mass.
4. The installation groove is convenient for various pipelines to pass through, and further ensures the normal pressure application of the stress adjusting tray.
5. Through hole site arrangement mode, guaranteed that in the filling process, the foamer can be along the stock with four directions blowout in circle, and then guaranteed the filling effect.
6. Through the arrangement mode, the structural strength of the stress strain sensor and the water content detection sensor is enhanced.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 1 according to the present invention.
Fig. 4 is a partially enlarged view of B in fig. 2 according to the present invention.
Fig. 5 is the actual installation diagram of the anchor rod of the present invention.
Fig. 6 is a flow chart of the reinforcing method of the present invention.
In the figure: the device comprises an equipment control end 1, a foaming agent storage and spraying device 2, a stress adjusting tray 3, a foaming agent spraying opening 4, a foaming agent conveying pipe 5, an optical fiber 6, an anchor rod 7, a stress strain sensor 8, a water content detection sensor 9, an external thread 10, an installation groove 11 and a signal line 12.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 6, an anchor rod for adjusting anchoring action based on water content and stress variation comprises an anchor rod 7, wherein a stress adjusting tray 3 for applying tensile force to the anchor rod 7 is sleeved on the anchor rod 7, an external thread 10 is processed on the anchor rod 7, a foaming agent conveying pipe 5 for conveying a foaming agent is wound on the external thread 10, and a foaming agent spraying opening 4 for releasing the foaming agent is arranged on the foaming agent conveying pipe 5; the external thread 10 is wound with an optical fiber 6, and the anchor rod 7 is adhered with a stress-strain sensor 8 for monitoring the stress between the anchor rod and the rock mass and a water content detection sensor 9 for monitoring the water content of the gap between the anchor rod and the rock mass; the stress strain sensor 8 is connected with the equipment control end 1 through an optical fiber 6, and the water content detection sensor 9 is connected with the equipment control end 1 through a signal wire 12. Through adopting foretell self-interacting stock device, can carry out real-time supervision to the stress between stock and the rock mass to acquire the mode that the rock mass destroys, in time fill between the adjacent rock mass of thin layer in the middle of losing, with the purpose that reaches the consolidated rock mass, guaranteed the safety and stability of rock mass.
Further, the inlet of the foaming agent conveying pipe 5 is connected with a foaming agent storage and spraying device 2, and the foaming agent storage and spraying device 2 is connected with an equipment control end 1 for controlling the opening of the foaming agent storage and spraying device. By the foaming agent storage and spraying device 2, when the foaming agent is required to be filled, the foaming agent storage and spraying device 2 is automatically controlled to spray the foaming agent and convey the foaming agent to the foaming agent conveying pipe 5, and then the foaming agent is conveyed to the rock body cracks through the foaming agent conveying pipe 5, so that the aim of reinforcing the rock body is fulfilled.
Further, the stress adjustment tray 3 is in contact with the rock surface and provides an anchoring pressure when anchoring. Through foretell stress adjustment tray 3 can be through rotatory, and then increase the anchor power between stock and the rock mass.
Furthermore, an installation groove 11 is formed in one end, located at the stress adjusting tray 3, of the anchor rod 7, and the ends of the foaming agent conveying pipe 5, the signal wire 12 and the optical fiber 6 penetrate through the installation groove 11 and then are connected with the equipment control end 1; the blowing agent delivery tube 5, the signal line 12, and the optical fiber 6 are all made of a high-strength resin material as a protective layer. The installation groove 11 is convenient for various pipelines to pass through, thereby ensuring the normal pressure of the stress adjusting tray 3.
Furthermore, the foaming agent eruption ports 4 on the same circle of external threads 10 are uniformly distributed in four directions. Through hole site arrangement mode, guaranteed that in the filling process, the foamer can be along the stock with four directions blowout in circle, and then guaranteed the filling effect.
Further, the stress-strain sensor 8 and the water content detection sensor 9 are adhered to the outer surface of the anchor rod 7 by high-strength resin. By the above arrangement, the structural strength of the stress-strain sensor 8 and the water content detection sensor 9 is enhanced.
Example 2:
referring to fig. 6, the method for reinforcing the rock mass of the hydro-fluctuation belt by using the anchor rod for adjusting the anchoring effect based on the water content and the stress variation comprises the following steps:
the method comprises the following steps: installing a self-adjusting anchor rod device at the position of the hydro-fluctuation belt, and applying initial stress to the anchor rod 7 through the stress adjusting tray 3;
step two: erosion of rock masses in the falling zone is caused under the action of reservoir water lifting, cementation between rock mass layers is weakened, stress change of rock masses around the anchor rod 7 is monitored in real time through the stress strain sensor 8, detected data are transmitted to the equipment control end 1, and the position of the settlement change of the rock masses along the dip zone is judged; monitoring the water content between the anchor rod 7 and the layer in real time through a water content detection sensor 9, and transmitting the detected data to the equipment control end 1;
step three: the equipment control end 1 judges whether the rock body where the anchor rod 7 is located is a rock body crack or rock stratum falls off according to the received data; if the stress is monitored to be continuously reduced, the crack is a rock body gap; if the stress is monitored to change suddenly and greatly, the rock stratum falls off;
step four: if the laminar rock mass cracks are monitored in the third step, the equipment control end 1 controls the foaming agent storage and spraying device 2 to be opened, the foaming agent storage and spraying device 2 sprays the foaming agent, the foaming agent is sprayed out from the foaming agent spraying opening 4 through the foaming agent conveying pipe 5, the position where the rock mass cracks occur is filled, and interlayer cementation is enhanced;
step five: after the interlayer rock mass cracks are filled, the stress of the interlayer rock mass is increased, the stress strain sensor 8 detects the stress rise, and the stress information is sent to the equipment control end 1;
step six: after receiving the stress rising information, the equipment control end 1 controls the stress adjusting tray 3 to increase the stress of the supporting tray, so that the supporting tray is anchored on the rock mass, and the safety of the rock mass is protected;
step seven: if the rock stratum is monitored to fall off in the third step, the equipment control end 1 controls the stress adjusting tray 3 to release the tray stress, so that the pressure of the tray on the rock mass is reduced, and the safety of the rock mass is protected;
step eight: when the stress of the stress adjusting tray 3 is reduced, the equipment control end 1 controls the foaming agent storing and spraying device 2 to spray the foaming agent;
step nine: after the foaming agent is filled in the step eight, if the rock mass of the anchor rod 7 is above the water level, the crack water between rock mass layers cannot be evaporated due to the isolation of the foaming agent, so that the water content of the rock mass is increased, is detected by the water content detection sensor 9 and is transmitted back to the equipment control end 1;
step ten: when the equipment control end 1 receives the increase of the water content, the cavity filling at the rock mass falling part is judged to be finished, and the foaming agent storage and spraying device 2 is controlled to stop spraying and finish the repairing;
step eleven: after the foaming agent is filled in the step eight, if the anchor rod 7 is positioned below the water surface, the water content is reduced due to the fact that the foaming agent is filled into the empty layer to separate water, the water content is detected by the water content detection sensor 9 and is transmitted back to the equipment control end 1;
step twelve: and after the equipment control end 1 receives the reduction of the water content, judging that the cavity at the rock mass falling part is filled completely, and controlling the foaming agent storage and spraying device 2 to stop spraying to finish repairing.
Claims (6)
1. The utility model provides an anchor rod based on water content and stress variation adjust anchoring effect which characterized in that: the foaming agent spraying device comprises an anchor rod (7), wherein a stress adjusting tray (3) for applying tensile force to the anchor rod (7) is sleeved on the anchor rod (7), an external thread (10) is processed on the anchor rod (7), a foaming agent conveying pipe (5) for conveying a foaming agent is wound on the external thread (10), and a foaming agent spraying opening (4) for releasing the foaming agent is formed in the foaming agent conveying pipe (5); the external thread (10) is wound with an optical fiber (6), and the anchor rod (7) is adhered with a stress-strain sensor (8) for monitoring the stress between the anchor rod and the rock mass and a water content detection sensor (9) for monitoring the water content of the gap between the anchor rod and the rock mass; the stress strain sensor (8) is connected with the equipment control end (1) through an optical fiber (6), and the water content detection sensor (9) is connected with the equipment control end (1) through a signal line (12).
2. A rock bolt for adjusting anchoring action based on moisture content and stress variation according to claim 1, wherein: the inlet of the foaming agent conveying pipe (5) is connected with the foaming agent storage and spraying device (2), and the foaming agent storage and spraying device (2) is connected with the equipment control end (1) for controlling the opening of the foaming agent storage and spraying device.
3. A rock bolt for adjusting anchoring action based on moisture content and stress variation according to claim 1, wherein: when anchoring, the stress adjusting tray (3) is in contact with the surface of a rock body and provides anchoring pressure, and the anchoring pressure is adjusted after receiving a signal of the equipment control end (1).
4. A rock bolt for adjusting anchoring action based on moisture content and stress variation according to claim 1, wherein: an installation groove (11) is formed in one end, located on the stress adjusting tray (3), of the anchor rod (7), and the ends of the foaming agent conveying pipe (5), the signal wire (12) and the optical fiber (6) penetrate through the installation groove (11) and then are connected with the equipment control end (1); the foaming agent conveying pipe (5), the signal wire (12) and the optical fiber (6) are all made of high-strength resin materials as protective layers.
5. A rock bolt for adjusting anchoring action based on moisture content and stress variation according to claim 1, wherein: the foaming agent eruption ports (4) positioned on the same circle of external threads (10) are uniformly distributed in four directions.
6. A rock bolt for adjusting anchoring action based on moisture content and stress variation according to claim 1, wherein: the stress strain sensor (8) and the water content detection sensor (9) are adhered to the outer surface of the anchor rod (7) through high-strength resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022296155.8U CN213926249U (en) | 2020-10-15 | 2020-10-15 | Anchor rod capable of adjusting anchoring effect based on water content and stress change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022296155.8U CN213926249U (en) | 2020-10-15 | 2020-10-15 | Anchor rod capable of adjusting anchoring effect based on water content and stress change |
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| CN213926249U true CN213926249U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606959A (en) * | 2022-03-11 | 2022-06-10 | 中国海洋大学 | Flexible net packaged slope early warning support system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114606959A (en) * | 2022-03-11 | 2022-06-10 | 中国海洋大学 | Flexible net packaged slope early warning support system |
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