综放工作面安全末采顶板预裂爆破技术研究

Study of Roof Pre-split blasting technology in the End-mining of Fully Mechanized Coal Face

综放开采过程中末采阶段的顶板控制问题一直困扰着煤矿的安全生产,因此,对末采期间顶板控制方法的分析研究具有深远的现实意义。在工作面末采期间,采用预裂爆破技术来破坏顶板的完整性,改变顶板的整体结构和力学性能,能够一定程度上保证工作面末采期间铺网和安全回撤等工作的顺利进行。

Roof control problem always persecutes mine safety production in the last cutting stope of fully mechanized coal face. For this reason, it has profound significance to research the roof control method which is applied during the end mining period of full-mechanized coal face. During this period, pre-split blasting technology is applied to destroy the integrity, change the structure and the mechanical property of the roof. To a certain extent, this technology can ensure the smooth progress of the work during the end mining period of the full-mechanized caving face, such as lapping and safety withdrawing.