摘要
Unwedge（3．0）程序是一款简易的交互式块体稳定分析软件，能对围岩块体稳定进行定量分析。本文通过运用该程序对两家人水电站地下厂房洞室围岩进行块体稳定分析，并根据其敏感性分析成果，为厂房轴线方位的选定提供一定的理论依据。
Unwedge （ to make quantitative 3.0） program is a simple interactive software for the analysis of rock mass stability and can be used analysis on the stability of surrounding rock mass. The stability of the surrounding rock of underground powerhouse chambers of Liangjiaren hydropower project is analyzed by applying Unwedge （3.0） program. According to the sensibility analytic result of surrounding rock - mass＇ s stability to the powerhouse axis direction, the paper provides certain theoretic basis for the selection of powerhouse axis direction.
