The Supporting Device and Application of Roof Advance Support in Caving and Loose Rock Body when Roadway Forming

Abstract

The invention discloses a supporting device for a roof advance support in the process of tunneling in caving loose rock mass and application of the supporting device. The device is composed of round tubes, steel plates and a steel tube. The four round tubes are arrayed in a rectangular mode and divided into two sets of round tubes, the steel plates are welded to the ends of both the sets of round tubes, and the steel plates are connected through the steel tube in a supported mode. In the construction process, four horizontal holes are drilled firstly in the two walls of a tunnel according to the distance and the length of the round tubes, the round tubes are inserted into the horizontal holes, the round tubes are exposed out of the lateral walls of the tunnel about 0.2 m, then the steel plates are welded to the exposed parts of the round tubes respectively, and the steel tube is welded between the upper layer steel plate and the lower layer steel plate. In the using process, I-steel or other materials are welded to the upper layer steel plate of the device, so that a roof beam used as the roof advance support is formed. The supporting device is suitable for driving in mine unstable rock mass or tunneling in the loose rock mass after a gob collapse, the roof support problem of the caving loose rock mass is solved, and the supporting device has the advantages of being simple in structure, reliable in performance, convenient for a worker to operate and the like.

Description

technical field [0001] The present invention relates to a support device for roof advance support when a roadway is formed in a caving loose rock body, in particular to a roof support that adopts an advanced inserting rod or an inserting plate method when a roadway is formed in a caving loose rock body in an empty area Supporting device for shed beams. The invention also relates to the use of this. Background technique [0002] The roadway forming medium in the caving body of the gob is generally loose rock mass with moving characteristics, and the surrounding rock cannot exert its self-supporting capacity. For the roof support method commonly used in roadway support, especially the support of the roof support of the advanced insertion rod or the insertion method, the support is based on the stability of the bottom plate to withstand the pressure transmitted by the roof, or the anchor rod is used to hang the roof at the stable place. Hanging support device. However, when ...

AI Technical Summary

Problems solved by technology

However, when roadways are formed in caving loose rock mass, the roof caving area is too large to rely on the roof or floor to form a supporting effect, especially the floor. Although the subsidence area can be filled, the support will fail due to excessive pressure. , so the existing support method of roof support is difficult to work, and there is a big safety hazard at the same time

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