Rock mass embedded truss supporting structure for roof surrounding rock reinforcement and mounting method thereof

Abstract

The invention provides a rock mass embedded truss supporting structure for roof surrounding rock reinforcement and a mounting method thereof. The structure comprises four-hole trays, first deformed steel bar anchor rods, second deformed steel bar anchor rods, expansion shell type anchor heads, threaded holes, nuts, graduated scales, external threaded columns, pointing marks and a direction locator; main structures of the structure are all located inside a rock mass, and a truss type overall supporting structure is formed inside the rock mass through connection of all components; the core component of the structure is the four-hole trays which are independently and innovatively designed outside the rock mass, the deformed steel bar anchor rods in four directions are connected together through the nuts to form a local integral structure, and then the deformed steel bar anchor rods extend towards the periphery through the same structure; and the connection between the adjacent four-hole trays is formed by mutually matching and connecting two crossed deformed steel bar anchor rods located inside the rock mass. The supporting structure is high in stability, good in supporting effect, small in occupied external excavation space and very small in influence on excavation and transportation operation and other activities of an underground mining area.

Description

technical field [0001] The invention belongs to the technical field of mining area support in mines, and relates to a rock mass embedded truss support structure and an installation method thereof for reinforcement of roof surrounding rock. Background technique [0002] In the process of mining, support work is indispensable, and many dynamic disasters such as roof collapse and rockburst often occur underground, which are related to inadequate support work. During the mining process, once a certain support part of the traditional support system is damaged, it will directly affect the existing stress balance state of other parts of the rock mass under the support system, which will lead to the failure of the entire support system and the lack of support structure. Wholeness. Once such an accident occurs underground, it will affect the mining operation at least, and it will cause huge casualties and property losses. Therefore, it is particularly important to support the rock m...

AI Technical Summary

Problems solved by technology

[0004] Overcome the disadvantages that the existing mine underground support structure cannot carry out overall active support and reinforcement for the surrounding rock, the scope of application is limited, a large amount of external mining space is occupied, and normal underground production and transportation are affected.

Images