Self-adjusting bolt device and method for strengthening layered wading rock mass in hydrofluctuation zone

A kind of fluctuating belt and self-adjusting technology, applied in measuring devices, jetting devices, buildings, etc., can solve the problems of single function and short action timeliness, so as to ensure the filling effect, increase the anchoring force, and ensure the safety and stability. Effect

Active Publication Date: 2021-08-31
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stress change of the anchor rod is monitored and an early warning is issued, but there are disadvantages such as single function and short action timeliness

Method used

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  • Self-adjusting bolt device and method for strengthening layered wading rock mass in hydrofluctuation zone
  • Self-adjusting bolt device and method for strengthening layered wading rock mass in hydrofluctuation zone
  • Self-adjusting bolt device and method for strengthening layered wading rock mass in hydrofluctuation zone

Examples

Experimental program
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Effect test

Embodiment 2

[0048] see Image 6 , using the self-adjusting bolt device to carry out the method for strengthening the rock mass in the water-fluctuating zone, comprising the following steps:

[0049] Step 1: install the self-adjusting anchor device at the drop zone, and apply initial stress to the anchor 7 through the stress adjustment tray 3;

[0050] Step 2: The rock mass in the water-fluctuating zone is eroded by the ups and downs of the reservoir water, and the interlayer cementation of the rock mass is weakened. The stress change of the rock mass around the anchor rod 7 is monitored in real time through the stress-strain sensor 8, and the detected data is transmitted to the equipment control terminal 1. Determine the location where interlayer cementation changes occur in the down-dip layered rock mass; monitor the water content between the anchor rod 7 and the interlayer in real time through the water content detection sensor 9, and transmit the detected data to the equipment control ...

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Abstract

The invention discloses a self-adjusting bolt device and a method for reinforcing a layered wading rock mass in a wading zone. The bolt is sleeved with a stress adjusting tray for applying tension force to it, and an external thread is processed on the bolt. , the outer thread is wound with a foaming agent conveying pipe for conveying the foaming agent, and the foaming agent conveying pipe is provided with a foaming agent ejection port for releasing the foaming agent; the outer thread is wound with an optical fiber , the anchor rod is pasted 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 controlled by optical fibers and equipment The water content detection sensor is connected to the control end of the equipment through a signal line. This bolt can monitor the stress between the bolt and the rock mass in real time, obtain the way of rock mass failure, and fill in the adjacent rock mass that loses the middle thin layer in time.

Description

technical field [0001] The invention belongs to the technical field of rock mass bolt construction in a water-fluctuation zone, and in particular relates to a self-adjusting bolt device and method for reinforcing layered wading rock mass in a water-fluctuation zone. Background technique [0002] Since the operation of the Three Gorges Project, it has given full play to its functions of shipping, flood control and power generation, bringing huge economic benefits. In the process of its operation, it also faces many engineering rock mass problems, the most serious of which is the safety and stability of the rock mass in the water-fluctuating zone. The water level in the Three Gorges Reservoir area will change periodically with the alternation of seasons, forming a water-fluctuating zone with a height of about 30m, and the rock mass in the water-fluctuating zone will then undergo periodic dry-wet alternation, which is very easy to accumulate damage, resulting in rock safety is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74G01D21/02B05B12/00
CPCB05B12/00E02D5/74G01D21/02
Inventor 孙钱程刘圣徐晓柳世增徐志华阮航危灿张国栋何钰铭
Owner CHINA THREE GORGES UNIV
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