摘要
提出了用人工切槽注入高压水,人为定向将坚硬老顶分层,从而降低其来压强度的控制坚硬顶板的新途径,论述了水力压裂机理、裂缝扩展的基本条件及裂缝扩展的方向,并用实验验证了理论研究成果.
A new way is put forward to control hard roof, which is of injecting high pressure water through the man-made fissures to slice the hard roof and soften the strength of weighting The principle of hydrobreakage, the criterion and direction of fissure development are also discussed These theoretical results are proved by some tests
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2000年第1期32-35,共4页
Journal of China Coal Society
