Shaft wall supporting structure

Abstract

A shaft wall supporting structure is divided into an embedded type, a welded type and an assembled type. The embedded type includes an anchor rod and a concrete layer. One end of the anchor rod is anchored in a shaft surrounding rock, a tray and a nut are retained at the other end of the anchor rod and embedded in a concrete layer, and the concrete layer and the shaft surrounding rock are anchoredinto a whole by the anchor rod; the welded type differs from the embedded type in that a steel rib framework composed of vertical ribs, horizontal ribs and pull ribs is disposed in the concrete layer, and the anchor rod does not retain a tray and a nut and is directly welded to the steel rib framework. The assembled type includes an anchor rod, a concrete layer and a cement layer. The cement layer is located between the concrete layer and the shaft surrounding rock, an outer layer steel plate is disposed between the cement layer and the concrete layer, one end of the anchor rod is anchored inthe shaft surrounding rock, the other end of the anchor rod is fixedly connected with the outer layer steel plate through a tray and a nut; and the concrete layer, the cement layer and the shaft surrounding rock are fixed to be a whole by the anchor rod. For the three types, it can be chosen according to actual requirements whether to set a damping material layer or not, and the anchor rod is anenergy release type or energy non-release type anchor rod.

Description

technical field [0001] The invention belongs to the technical field of shaft engineering support, in particular to a shaft wall support structure. Background technique [0002] At present, in the shaft wall support construction, the surrounding rock of the wellbore usually encounters the situation of large deformation of shallow soft rock, large ductile deformation of deep high-stress surrounding rock, or dynamic disasters such as rockburst in deep surrounding rock. In view of the above three situations encountered in the surrounding rock of the wellbore, the main countermeasures are secondary support technology and pressure relief blasting technology. [0003] From the perspective of principle, the secondary support technology is more suitable for the large deformation of shallow soft rock and the large ductile deformation of high-stress surrounding rock in deep. In an unstable state, when the local stress is released to a certain extent, the deformation rate of the surrou...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention provides a shaft wall support structure, which has the characteristics of simple structure, fast installation, and convenient construction, and can effectively deal with the large deformation of shallow soft rock encountered by the surrounding rock of the shaft, In the case of deep high-stress surrounding rock with large ductile deformation or in the case of dynamic disasters such as rockburst in deep surrounding rock

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