采动影响下回采巷道底鼓机理及实用性技术研究

Study on Floor Heave Mechanisms of Mining Roadway Under Mining Influence and ItsPractical Technology

通过对回采巷道底板与煤柱的破坏关系分析,得到两帮煤体首先变形破坏是采动影响下回采巷道底鼓的直接原因,认为该类巷道的底鼓类型以挤压流动性底鼓为主,并得出对其底鼓机理的新认识;研究了现有底鼓防止措施,提出了在没有更好、更直接办法控制该类巷道底鼓的情况下,巷道起底翻修不失为一种有效、经济的实用性技术。现场实践表明,采用巷道起底翻修能满足生产需要。

Through analysis on mining roadway damage relation between floor and pillars,the deformation and failure of two working slope coal is the direct cause of mining roadway floor heave,under mining influence Its floor types based mainly on floor heave liquidity squeeze,and draw on new understanding of floor heave mechanisms is obtined.The preventive measures of floor heave at present are studied,it is put forward that roadway from the end of the renovation is an effective,economy practical technology in the case of no better,more direct ways to control floor heave of such class.Practical applications indicate that roadway from the end of the renovation can be used to meet production needs.