摘要
通过对放顶煤工作面顶煤位移的实测研究及顶煤裂隙发生发展的理论分析，利用实测的支撑压力曲线、顶煤位移曲线和位移速度曲线，按裂隙性质对顶煤进行分区，针对不同特点的分区，提出了利用裂隙性质改变现行注水范围、钻孔布置方式的新方法．
Based on the study of the top coal movement of top coal caving faces and the analysis of the producing and developing of top coal fractures, top coal can be divided into different regions on the basis of fracture character with on the spot bearing pressure curve, top coal movement curve and movement rate curve. In accordance with different regions, a new water injection method is indicated to change water injection range and water injection drill arrangement utilizing fracture character.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1998年第6期580-584,共5页
Journal of China Coal Society
基金
国家自然科学基金
关键词
顶煤
位移
裂隙
体积膨胀
注水方式
防尘
top coal movement, fracture, volume expansion, way of water injection
