Intelligent anchor cable integrating supporting and monitoring functions

Abstract

The invention discloses an intelligent anchor cable integrating supporting and monitoring functions. The intelligent anchor cable comprises an anchor cable body, wherein an anchor cable stranded wire is arranged in the anchor cable body and comprises an intelligent epoxy stranded wire capable of monitoring the tension value of the intelligent epoxy stranded wire, the intelligent epoxy stranded wire consists of a monitoring tension sensing element, an epoxy stranded wire and an epoxy coating, the monitoring tension sensing element can be an optical fiber and/or a fiber bragg grating, the epoxy stranded wire comprises a central wire and side wires, the monitoring tension sensing element is coupled with the central wire of the epoxy stranded wire and is arranged in the length direction of the central wire, a lead is arranged at the end, located on the anchor cable body, of the monitoring tension sensing element, and one end of the lead extends to the outside of the anchor cable body. The optical fiber is arranged along the axis of the central wire and is coupled with the central wire into a whole, the central wire is made of a carbon fiber material, and the survival rate of the optical fiber is greatly improved under the protection of the side wires and epoxy.

Description

technical field [0001] The invention relates to the technical field of support and monitoring integration of tunnel engineering, mine roadway engineering, slope engineering, and foundation pit engineering, and specifically relates to an intelligent anchor cable with integrated support and monitoring functions. Background technique [0002] At present, the monitoring of the prestressed anchor cable force value in the fields of tunnel engineering, mine roadway engineering, slope engineering, foundation pit engineering, etc. is mainly to install pressure sensors under the anchor plate. The existence of resistance is unevenly distributed along the length of the cable, so installing a pressure sensor at the anchor plate of the anchor cable cannot truly reflect the actual working state of the anchor cable in the anchor section. An effective means of the actual working state of the anchor cable. [0003] The patent application number is 201611143633.3, which provides an intelligen...

AI Technical Summary

Problems solved by technology

The technical solution of this patent is still unable to effectively monitor the working state of the anchor cable; especially when the first dynamometer is buried too much, the sectional area of ​​the lead wire of the dynamometer occupies most of the sectional area of ​​the anchor cable slurry, reducing the anchor cable Pull-out resistance; moreover, the first dynamometer to be deployed is still selected at selected points. If the number is small, it is still not representative. Moreover, the existing anchor cables do not have self-checking functions and cannot realize real-time dynamic monitoring. Failure of a certain section cannot be detected, which poses a huge hidden danger to safety

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