软岩巷道水平变形模拟研究及机理分析

The simulation research and mechanism analysis on level displacement of tunnel in soft rock

应用FLAC程序对软岩巷道的馅饼式变形特征进行了模拟和分析，从宏观的角度描述了水平变形的表征和内因．通过古汉山矿井底车场及冯营矿二四轨道软岩巷道变形破坏特征，分析研究了软岩巷道不稳定机理，持续性的水平变形是关键因素，并对这种持续变形在数值上进行了描述，提出稳定巷道水平变形的数值量．根据水平变形机理，提出了3种控制方式．

Simulated and analyzed the pie form displacement of the tunnel in soft rock with FLAC program, and described the type and reason of level displacement. Based on the displacement characteristics and damage of tunnels in Guhanshan Colliery and Fengying Colliery Ersi Guidao, analyzed the instability mechanism of tunnels in soft rock, continual level displacement is the key factor, depictd it in value, and gave out the value with which the tunnel can keep stability. Three kinds of control methods was presented based on level displacement mechanism.