李子垭矿回采巷道底臌原因分析

Analysis of Floor Heaving in Entries of Liziya Coalmine

本文借助于有限元计算方法,研究了巷道围岩,特别是底板岩层在自重应力及采动影响下的应力分布和破坏情况,找出了李子垭矿回采巷道底臌原因及影响因素,为制定防治回采巷道底臌措施提供了依据,对研究其它矿的巷道底臌问题也具有指导意义。

Using the finite element method, this paper studies the stress distribution and fracture of surrounding rock of entries, especiallg the entry, floors, under the effect of gravity stress and coal mining. The reasons and affecting factors of floor heaving in Liziya Coal Mine are diocovered provides a basis for formulating controlling measures of floor heaving of the mine, the research also has directive signitiecnce for solving the floor heaving problem in other coal mines.