Gob-side entry retaining method for reversely and flexibly cutting top plate and cutting device of gob-side entry retaining method

Abstract

The invention discloses a gob-side entry retaining method for reversely and flexibly cutting a top plate and a cutting device of the gob-side entry retaining method. The gob-side entry retaining method for reversely and flexibly cutting the top plate comprises the following steps that S1, a drilling machine is used for drilling a plurality of drill holes in the top end of a roadway; S2, a rope saw cutting machine is arranged on a walking track; S3, a diamond bead stringing rope is hung on rotating wheels at the tops of reverse cutting frame tubes, and the top ends of the reverse cutting frame tubes are fed into the drill holes; S4, guide wheels are installed, the diamond bead stringing rope forms a reverse cutting annular closed line, and the diamond bead stringing rope cuts the top plate; and S5, the drill holes are replaced until the top plate cutting operation is completed. The cutting device comprises the rope saw cutting machine and the reverse cutting frame tubes; the rope saw cutting machine is arranged on the walking track; and the two reverse cutting frame tubes are inserted into the two adjacent drill holes correspondingly, the rotating wheels are connected to the tops of the reverse cutting frame tubes, the diamond bead stringing rope is arranged on the rope saw cutting machine, and the diamond bead stringing rope penetrates through wheel grooves of the rotating wheels and wheel grooves of the guide wheels respectively to form the reverse cutting annular closed line.

Description

technical field [0001] The invention relates to the field of coal mines, in particular to a gob-side entry retaining method for reversely and flexibly cutting a roof and a cutting device thereof. Background technique [0002] Green mining is a direction of coal mining in my country in the future, and coal pillar-free mining belongs to green mining. The proposal of green mining is to reduce the waste of coal resources and reduce the expenditure of mining costs in the process of coal mining. The current coal pillarless mining mainly includes gob entry retention and gob entry entry, and gob entry retention is widely used today. Gobside retaining technology is to keep the section along the channel after mining in the upper section for the continued service of the lower section, so as to realize the double use of a roadway. This technology can not only recover the mining resources of the largest coal pillar protection in the previous section The recovery rate reduces the waste ...

AI Technical Summary

Problems solved by technology

The current method of cutting the cantilever beam in our country is to drill a row of holes perpendicular to the roof in the roadway to blast and cut the roof. Therefore, a large number of professional blasting personnel and explosives are required, and the construction period is long. The stress disturbance caused by the explosion is also unfavorable for the roadside support. It has brought some troubles to the coal mining work

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