A resistance-increasing large-deformation anchoring device and its construction method

Abstract

The invention discloses a resistance-increasing large-deformation anchoring device and a construction method thereof, which is composed of a resistance-increasing anchor system, a deformation system and a protection system; The wedge-shaped fixture and the resistance-increasing tray are connected by threads to control the resistance-increasing deformation of the special steel wire rope. The heading anchor is fixed at the tail of the special steel wire rope to prevent the special steel wire rope from unanchoring; the deformation system is composed of a special steel wire rope, a conversion The conversion head is a force transmission structure made of alloy steel, the upper end is connected to the special steel wire rope and the lower end is connected to the anchor body; the protection system is composed of a protective shell and a bolt rod, and the protective shell is made of 3-5mm galvanized iron sheet formed and secured by a bolt shank to prevent corrosion of the device. The invention adopts the idea of ​​flexible resistance-increasing deformation of the steel wire rope, and has simple structure, convenient construction, less occupied space and wide application prospect.

Description

technical field [0001] The invention relates to an anchoring device used in geotechnical engineering fields such as coal mine roadways, in particular to a resistance-increasing large-deformation anchoring device and a construction method thereof. Background technique [0002] With the increase of coal mining depth in our country, the geological conditions faced by coal mines are becoming more and more complex. The physical and mechanical properties of surrounding rocks under the condition of high ground stress in the deep part are very different from those in the shallow part, especially with the characteristics of large deformation. Coal mine roadways are mostly supported by anchor shotcrete support and anchor mesh cable joint support. The bolts, anchor cables and their anchoring devices are usually rigid structures with small deformation, which leads to safety accidents such as roof fall, sidewall and bottom sag in coal mine roadways. Affect the normal production of coal m...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of existing deformation anchoring devices, the present invention provides a resistance-increasing and large-deformation anchoring device and its construction method. The device solves the problem of large deformation of surrounding rocks in geotechnical engineering such as coal mine roadways, and has the advantages of simple structure, Advantages of constant resistance increase, anchorage stability and erosion prevention

Images