CAJ | 학술논문

根据淮南顾桥矿南区1211（3）综采工作面厚硬砂岩顶板的特性和开采条件，通过理论分析及工程类比，工作面初次来压步距为50-60m。为了保证工作面的安全生产，对工作面切眼砂岩顶板实施深孔爆破切顶，初次来压步距缩短为24.5m，取得了良好经济和社会效益。
근거회남고교광남구1211（3）종채공작면후경사암정판적특성화개채조건，통과이론분석급공정류비，공작면초차래압보거위50-60m。위료보증공작면적안전생산，대공작면절안사암정판실시심공폭파절정，초차래압보거축단위24.5m，취득료량호경제화사회효익。
According to the characteristics and mining conditions of hard and thick sandstone roof in fully mechanized coal face in the South of Huainan Guqiao Mine 1211(3),the first weighting step of the working face is 50~ 60 meters by the theoretical analysis and engineering analogy. In order to ensure the safety production of the working face,the technique of deep hole blasting and roof cutting is implemented in cut-hole sandstone roof of the working face, and the first weighting step has decreased to 24.5 meters, and the technique has made favorable social benefit and economic benefit.