Resisting force dodging device for controlling floor heave, and construction method for device

Abstract

The invention discloses a resisting force dodging device for controlling a floor heave, and a construction method for the device. The resisting force dodging device comprises an anchoring system and a resisting force dodging system, wherein the anchoring system comprises a sleeper type anchoring beam, a prestressed anchor rod and prestressed anchor cables, and is used for providing anchorage force for the resisting force dodging device; the resisting force dodging system comprises slide components, an arc-shaped elastic steel strip and high-strength springs; the slide components are mounted at arch supports of a tunnel; the bottom of the arc-shaped elastic steel strip is fit with a pit bottom, and the two ends of the arc-shaped elastic steel strip are inserted into the slide components; the high-strength springs are arranged between the sleeper type anchoring beam and the arc-shaped elastic steel strip. The device adopts the concept that the resisting force dodging system and a base plate deform together, so that a problem that the deformation of the soft rock roadway floor heave is large is solved; the resisting force of the device increases along with the increase of the deformation, and finally, the deformation of the floor heave is controlled within a resisting force dodging space, so that the floor heave is effectively controlled in a highland stress soft rock roadway, and the application prospect is broad.

Description

technical field [0001] The invention discloses a yielding device for controlling bottom sag, which is particularly suitable for controlling the stability of the bottom plate of high ground stress soft rock roadway in mines such as coal mines with large deformation of the bottom sag. Background technique [0002] Floor sill is a stability problem often encountered in underground projects such as coal mine roadways, metal mines, and traffic tunnels. It occurs more frequently in roadways with poor floor lithology, especially in high-stress soft rock roadways. A roadway with a large deformation of the bottom will affect the normal use of the roadway and increase the cost of support and maintenance. Severe bottom sag will also affect the ventilation of the coal mine during coal mine production and cause gas accumulation. It can be seen that controlling the bottom is the key to ensure the safety of roadway transportation and use. [0003] The prevention and control measures of ro...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the existing support methods, the present invention provides a yielding device for controlling bottom heaving and its construction method. The device solves the problem of large deformation of the floor heave in soft rock roadways with high ground stress, and can be used for both temporary support and construction. Can be used as permanent support

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