摘要
为解决101首采工作面坚硬基本顶不易垮落,悬顶面积过大而造成安全隐患,通过对基本顶物理力学特征及岩层破断规律进行分析,针对性地制定了深孔预裂爆破方案,矿压观测表明,采用深孔预裂爆破,基本顶悬露面积及来压步距得到减小,有效保证了回采安全。
To solve the 101 mining face hard basic roof caving not easily, hanging area is too large and cause potential safety hazard, by means of basic roof physical mechanics characteristics and the regularity of rock breakage is analyzed, specifically formulated the deep-hole pre-splitting blasting scheme, mine pressure observation showed that using deep hole pre-splitting blasting, basic roof hanging open area and weighting interval get reduced, effectively ensure the stope safety.
作者
杨超
Yang Chao(Fenxi Mining Industry Zhongxing Coal Industry ,Shanxi Jiaocheng 03050)
出处
《煤矿现代化》
2018年第5期133-135,137,共4页
Coal Mine Modernization
关键词
基本顶
破断规律
深孔预裂
回采安全
basic roof
breaking rule
deep hole pre-crack
safe return
