Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof

Abstract

The invention discloses a quick supporting method for large-deformation roadway easy to fall, break and loosen and an apparatus thereof. The method comprises the following steps of: (1) clearing away the loose stones on the wall of the surrounding rock of the roadway; (2) hanging a reinforcing steel bar mesh along the digging outline of the roadway and initially spraying one thin concrete layer; (3) arranging an anchor rod in the drill hole of the roadway wall; (4) arranging a side-wall steel grating arch to support the surrounding rock of the side wall; (5) arranging a top-supporting steel grating arch, touching the top and supporting the upper surrounding rock; (6) clearing away the floating slag at the bottom of the roadway, arranging a steel grating arch of the inverted arch, supporting and sealing the system into a ring; (7) carrying out the cement injection construction on the anchor rod; (8) welding the exposed part of the cement injected anchor rod on the steel grating arch toform a whole structure; and (9) multi-spraying concrete or steel fiber concrete along the roadway wall. The apparatus comprises an anchor rod, a side-wall steel grating arch, a steel grating arch of top arch, a steel grating arch of inverted arch, and a concrete spray layer of reinforcing steel bar. The invention has the advantage of remarkable support effect, simple method and convenient operation and solves the problem that the bracket and the surrounding rock are not adhered tightly.

Description

technical field [0001] The present invention relates to the technical field of roadway support, more specifically to a rapid support method for large-deformation, easy-to-cave, broken, and loose roadways, and also relates to a device for a rapid support method for large-deformation, easy-to-cave, broken, and loose roadways . The present invention will be widely applicable to unconsolidated loose and broken rock masses, loess with severe subsidence, water-rich rock masses with large areas of water spraying and mine roadways (such as coal mines and iron mines) in frozen heaving rock bodies in severe cold regions. Small underground tunnels (such as water tunnels) and other support areas. Background technique [0002] The rapid support method of soft rock roadway has experienced the development process of wood support, masonry support, section steel support and bolt support. At present, the support forms widely used at home and abroad mainly include: [0003] 1. U-shaped stee...

AI Technical Summary

Problems solved by technology

However, this joint support method has problems such as complicated construction procedures, low support efficiency and high support costs.

[0014] In strata with complex geological conditions, broken and loose, prone to caving, and large buried depth, problems such as roof caving and bottom heaving, sideways movement of the two sides, large deformation, damage, and damage to supports are prone to occur. The above support forms are difficult to effectively control roadway deformation. , so that the mine roadway deforms too much, invades the limit, and even has the risk of collapsing and falling, which greatly threatens the safe production and operation of the mine and restricts the driving speed of the roadway; It has become one of the bottlenecks that plague the normal production of mine roadways

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