Inverted wedge type recoverable anchor rod

Abstract

The invention discloses an inverted wedge type recoverable anchor rod which comprises a threaded rod body with threads on the outer side. One end of the threaded rod body serves as an anchorage section and is provided with a first nut for fastening, and the other end of the threaded rod body serves as an anchor head and is provided with a tray and a second nut; the outer side of the threaded rod body located between the tray and the first nut is connected with a threaded casing pipe system through surface threads, the threaded casing pipe system is composed of multiple threaded casing pipe subsystems, and the threaded casing pipe subsystems are fixedly connected; each threaded casing pipe subsystem comprises a threaded steel pipe and a wedge, the threaded steel pipes are fixedly connected with the wedges, threaded casing pipes and wedges of every two adjacent threaded casing pipe subsystems are connected. After mounting of the anchor rod is completed, a broken rock-soil body is firmly hung on a stable rock-soil body, therefore, the overall strength of rock is increased, the uplift bearing capacity of the anchor rod is improved, and meanwhile the force of the anchor rod is more reasonable. A support effect can be played as soon as possible after mounting, the rod body can be taken out for temporary support, and materials are saved.

Description

technical field [0001] The invention belongs to the technical field of anchoring and support for slope engineering, and in particular relates to an inverted wedge type recoverable anchor rod. Background technique [0002] Since the development of bolts, they have been widely used in the fields of mines, civil engineering, water conservancy, and traffic light engineering by virtue of their superiority in comprehensive performance. In the process of slope support and reinforcement, bolts play an important role in improving the stability of broken rock mass. At present, the anchoring forms of anchor rods mainly include end anchoring and full-length anchoring. The traditional inverted wedge bolt is a mechanical bolt, which mainly anchors through the mechanical resistance between the anchor head material and the surrounding rock, so only the end is anchored. This type of bolt has a simple process and plays a supporting role immediately after installation, but it is basically sh...

AI Technical Summary

Problems solved by technology

The traditional inverted wedge bolt is a mechanical bolt, which is mainly anchored through the mechanical resistance between the anchor head material and the surrounding rock, so only the end of the bolt is anchored.

This type of bolt has a simple process and plays a supporting role immediately after installation, but it is basically short, with low anchoring force and poor durability. It has high requirements for surrounding rock conditions and has a limited scope of application.

[0003] For temporary support, the general bolt basically stays in the rock and soil after finishing the work, causing unnecessary waste, so the development of a recyclable bolt is particularly urgent for the existing support technology

Images