摘要
根据掘进工作面出水点分布特征,有针对性地超前布置探水钻孔,对顶板砂岩水进行疏放,为工作面安全回采创造了有利条件。
According to the distributing characteristics of drain point on heading face, the authors have posted the layout of advance water prospecting borehole and dewatering sandstone water, which provides favorable condition for safe stoping on coal face.
出处
《江西煤炭科技》
2008年第3期15-16,共2页
Jiangxi Coal Science & Technology
关键词
砂岩水
超前疏放
钻孔
sandstone water
advance dewatering
borehole
