竖井井壁破坏分析和最大负摩擦力的确定

Failure Analysis of Vertical Shaft wall and Determination of Maximum Negative Frictional Force

分析临涣煤矿区竖井井壁破坏的原因，主要是由负摩擦力产生的纵向荷载引起的。计算出几个竖井的最大负摩擦力，可确定出该矿区竖井在极限状态时的负摩擦力。

According to the analysis for failure reasons of vertical shaft wall in Linhuan Coal Mine,its main reason is longitudinal load produced by negative frictional force. From calculating for the maximum negative frictional force of several vertical shaft walls,the limited negative frictional force of vertical shaft wall in this mining area can be determined.