摘要
基于理论分析、地质环境与开采条件调查,构建了煤岩断裂与失稳多元指标监测方法。通过钻孔应力计、光学钻孔窥视仪和顶煤松动范围监测等进行实测,综合对比分析超前预爆破中顶煤应力与变形规律。最终确定超前预爆破范围为10.0～35.0 m,支护范围为0～45.0 m。
Initially,according to theoretical analysis,investigations of geological environment and mining conditions,the methodology was proposed to monitor multiple indicating upon coal/rock fracture and destabilization.Afterwards,the borehole stress apparatus indicating vertical stress,optical borehole peeper and broken range of top coal instrument,etc.were performed in mining field,the regularity of stress and deformation of top coal were analyzed comprehensively in the process of the segment pre-blasting.Ultimately,the dimension of segment pre-blasting and supporting were confirmed,respectively,to be of 10.0~35.0 m and 0~45.0 m.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2011年第5期718-721,共4页
Journal of China Coal Society
基金
国家自然科学基金资助项目(10772144)
陕西省重点实验室资助项目(09JS018)
新疆自治区重点技术创新资助项目(2010-367)
关键词
急斜煤层(群)
水平分段综放开采
超前预爆
steep seams
fully mechanized sub-level top coal caving
segment pre-blasting
