Valve type anchor rod axial force monitoring device

Abstract

The invention relates to a valve type anchor rod axial force monitoring device, and belongs to the field of sensing technology. An anchor rod is mounted at the center of a monitoring device; a high-pressure pump pours high-pressure fluid into an annular fluid pipeline; the anchor rod drives a valve to move downward to compress a reset spring; along with the movement of the valve, the fluid pipeline and the annular fluid pipeline slowly get connected; a flowmeter A and a flowmeter B calculate the fluid flow in the fluid pipeline respectively; with the increasing axial force, the compressed degree of the valve increases, so does the fluid flow in the fluid pipeline; therefore, the axial force on the anchor rod can be estimated according to the readings of the flowmeter A and the flowmeter B.With a simple structure, the device provided by the invention has relatively good sealing property and can effectively prevent water and explosion to ensure high reliability; moreover, the device isquite easy to operate and suitable for monitoring the axial force of most anchor rods.

Description

technical field [0001] The invention relates to a valve-type bolt axial force monitoring device, which belongs to the technical field of sensing. Background technique [0002] Geotechnical anchoring technology refers to closely linking the structure with the stratum through the bolt embedded in the rock mass, so that the anchor rod and the surrounding rock mass form a stable bearing ring to improve the stress state of the rock mass and improve the surrounding area. The strength of the rock, thereby maintaining the safety of the roadway. With its advantages of fast construction, small footprint, economical, safe and reliable, rock mass anchoring technology has been widely used in the construction of infrastructure projects such as slopes, foundation pits, mines, tunnels, water conservancy and hydropower, and anti-tilt and anti-floating structures and mining. It has been widely used and achieved good social and economic benefits. As one of the main support methods of geotech...

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: In view of the shortcomings of the existing bolt axial force monitoring device, such as difficult waterproof and explosion-proof, poor reliability, high manufacturing cost, and complicated safety management, it is difficult to realize long-term effective and accurate monitoring of bolt anchoring projects problem, the present invention provides a valve type bolt axial force monitoring device

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