One-way coal cutting process and mining system of double coal mining machine

Abstract

The present application relates to the technical field of coal mining, and particularly relates to a one-way coal cutting process and mining system of double coal mining machines. In the one-way coal cutting process of double coal mining machines, two coal mining machines work in cooperation: the first coal mining machine is fixed at the tail of the working face and is used for cutting the tail triangle coal and synchronously opening and cutting the next round machine nest; the second coal mining machine is the main coal cutting equipment and only cuts coal in one direction from the tail to the head, and returns in the empty cutting mode. The coal cutting direction of the second coal mining machine is consistent with the coal conveying direction of the scraper conveyor, and the coal is directly dropped into the scraper conveyor, so that the coal blocking is avoided; the opening and cutting of the tail machine nest are synchronously performed with the main coal cutting, and the oblique cutting process of the main coal mining machine head is omitted. The one-way coal cutting process of double coal mining machines can completely solve the pain points of the coal blocking in the reverse coal cutting and the long time consumption of the opening and cutting of the machine nest of the main coal cutting equipment in the prior art, significantly shortens the coal mining cycle period, and realizes the comprehensive improvement of the mining efficiency, continuity and safety.