Novel sphere type anchor rope applicable to faults and other geological structure damaged sections

Abstract

The invention discloses a novel sphere type anchor rope applicable to faults and other geological structure damaged sections and belongs to the field of anchor ropes for retaining and protecting in underground works, such as mine engineering. The novel sphere type anchor rope is used for solving the problem that the existing anchor ropes are prone to shear failure. The novel sphere type anchor rope disclosed by the invention comprises an anchor rope body, a pallet, a spherical-groove steel backing plate and a sphere type anchor rope locking device, wherein a spherical groove is formed in the spherical-groove steel backing plate and is bigger than the anchor rope locking device, and the contact between the sphere type anchor rope locking device and the spherical-groove steel backing plate is spherical contact, so that the anchor rope locking device can rotate in the groove. When rock formations or broken rock blocks of the faults and other geological structure damaged sections undergo mutual staggering, the anchor rope body bears a great shear force, the sphere type anchor rope locking device is deflected at a certain angle in the spherical groove of the spherical-groove steel backing plate, and meanwhile, the anchor rope body is also deflected at a certain angle along with the staggering of the rock formations, so that the transverse shear force stressed by the anchor rope body is reduced, the damage to the anchor rope caused by shearing is avoided, and the shear resistance of the anchor rope is improved.

Description

Technical field: [0001] The invention belongs to the field of anchor cables used for support in underground engineering such as mine engineering, and in particular relates to a novel spherical anchor cable suitable for sections where geological structures such as faults are damaged. Background technique: [0002] Anchor cable support plays an important role in coal mine roadway support. The anchoring depth of the anchor cable support is large, and the lower unstable rock formation can be anchored in the upper stable rock formation, with good reliability; and prestress can be applied to improve the bearing capacity of the rock mass itself, ensuring the overall stability and safety of the surrounding rock. The anchor cable has the characteristics of high tensile strength, good toughness, and low relaxation. The anchor cable body has a high elongation rate and a significant tensile effect, but its shear resistance is poor. From the analysis of the damage of anchor cables in th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the development of joints and fissures and loose and broken surrounding rocks in the section of geological structure damage such as faults, in order to obtain better anchoring effect and solve the problem that the current anchor cable is prone to shear failure, the present invention proposes a method that is suitable for sections of geological structure damage such as faults. new spherical anchor cable

Images