长沟峪煤矿炮采壁式工作面矿压规律研究

A study on strata pressure regularity in blast-mining wall-faces in Changgouyu Coal Mine

通过在长沟峪煤矿+20水平北—北4槽炮采工作面从初采到末采期间的矿压观测,结合工作面各种矿压显现特征,确定了工作面初次来压步距和周期来压步距,掌握了工作面回采过程中顶板活动规律,为4槽煤层的顶板管理提供了依据。

Based on the observations of the rock pressure and its changes during the period from initial mining and finishing mining in north-- north # 4 blast mining coal face at ＋ 20 level in Chang＇gouyu Coal Mine plus the characteristics of strata pressure behaviours, this article determines the first roof weighting intervals and the periodic weighting intervals at the face. In this way, the regularity of roof movement during mining process is mastered. This provides sound grounds for roof management for mining in # 4 coal seam.