Study on High Efficiency Mining Technology of Adjusting Mining Face

摘要

In order to reduce the coal loss and raise recovery ratio, rotational adjustment mining is used in the last stage of mining No.31100 work-face for recovering triangle coal. The paper optimized the adjusting mining plan of working face, selected the best adjusting scheme, calculated the cutting cycle numbers and the reasonable length of each section of working face, designed the construction technology process of adjusting mining, calculated the advancing distance when joining each chute, proposed the methods of roof control for head section and areas of the T-junction and leading support in coal roadway.