论文部分内容阅读
象山煤矿5煤采煤工艺先后经历了分层开采、滑移顶梁液压支架放顶煤开采及目前应用的r型长钢梁放顶煤工艺。随着采煤工艺的不断改进，工作面单产与工效逐步提高。自1996年8月在2502工作面使用π型长钢梁放顶煤工艺以来，连续7个多月，平均单产达12284t／月，比原滑移支架放顶煤
The coal mining technology of 5 coal in Xiangshan Coal Mine has gone through stratified mining successively, the top coal caving with hydraulic support of slip top beam and the currently used r type long steel top caving process. With the continuous improvement of coal mining technology, working face yield and efficiency gradually increase. Since August 1996, 2502 working face using π long steel beam top coal caving process, for more than 7 months, the average yield of 12284t / month, compared with the original slip bracket Caotang