综采面厚层坚硬顶板强制放顶技术研究

摘要

古书院矿151306综采工作面采用预裂爆破强制放顶技术,需对该工作面厚坚硬顶板切眼和两巷深孔位置进行合理布置,并对切眼和两巷深孔预裂爆破参数进行合理设计,才为工作面的安全回采提供了有效的技术保证。%No.151306 fully-mechanized mining face in Gushuyuan Mine adopts pre-cracking explosion technology.Rational distribution of open-off cuts of hard roof and deep holes of two entries and rational design of pre-cracking explosion parameters can provide effective technological guarantee for the safe caving.