Multifunctional FRP intelligent anchor pole capable of realizing multi-point temperature compensation

Abstract

The invention discloses a multifunctional FRP intelligent anchor pole capable of realizing multi-point temperature compensation. The multifunctional FRP intelligent anchor pole mainly comprises a welding-free long-scale-distance multi-grating sensor, a fiber bragg grating multi-point temperature compensation auxiliary sensor and an FRP anchor pole main body. After being encapsulated, the welding-free long-scale-distance multi-grating sensor and the fiber bragg grating multi-point temperature compensation auxiliary sensor are implanted during production of the FRP anchor pole, so an integral multi-functional FRP intelligent anchor pole is manufactured. The welding-free long-scale-distance multi-grating sensor comprises multiple long-scale-distance multi-grating sensing units which are successively connected in series. The fiber bragg grating multi-point temperature compensation auxiliary sensor comprises multiple optical grating sensing units which are encapsulated in a sleeve and capable of freely sliding in a telescopic manner. The multifunctional FRP intelligent anchor pole can be used for anchoring and reinforcement in related projects such as mineral products, buildings and rock and soil, so bearing ability, stress-strain, damage conditions and the like of the anchor pole can be monitored and convergence, deformation, stability and the like of surrounding rock support and surrounding rock can be well monitored.

Description

technical field [0001] The invention relates to a multifunctional intelligent monitoring bolt for tunnels, rock soil and slope engineering, which is mainly used for monitoring the bearing capacity, stress and strain, and damage of bolts in related projects such as civil engineering, tunnels, and mining. Monitoring can also be used for surrounding rock support and monitoring of surrounding rock convergence deformation and stability. At the same time, the anchoring and strengthening effect of the bolt itself has not changed. To its original anchoring and strengthening effect on surrounding rocks, slopes, retaining walls, etc. Background technique [0002] Bolt support is a reinforcement and support method used in surface engineering such as slopes and deep foundation pits, as well as underground chambers such as tunnels and stopes. Bolt support is to change the mechanical state of the surrounding rock itself through the bolt inside the surrounding rock, forming an integral an...

AI Technical Summary

Problems solved by technology

However, at present, there are no relevant patents and related documents in domestic and foreign searches for the use of long-gauge fiber gratings to test and monitor the load-bearing conditions, stress-strain conditions, damage detection, and surrounding rock convergence deformation and stability of rock bolts.

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