软岩高边坡开挖卸荷变形研究

以大型岩土工程数值分析软件（ADINA）为研究手段，基于卸荷岩体力学理论与方法，对某公路开挖高边坡进行了开挖卸荷分析，综合考虑了初始工况、开挖工况、卸荷工况，加固工况，并与监测数据进行了对比分析，卸荷岩体力学理论考虑了边坡开挖面附近的强卸荷区域以及该区域岩体参数的劣化，计算结果与监测数据吻合较好，进而也验证了卸荷岩体力学理论在边坡开挖计算分析中的合理性。研究成果对边坡的后期运营提供了指导，对其他工程也有一定的借鉴作用。

Research on unloading deformation of soft rock high slope

Taking the numerical analysis software（ADINA）for large-scale geotechnical engineering as research method, based on unloading rock mass mechanical theory and method, excavation unloading of high slope of a highway is analyzed. The primary condition, excavation condition, unloading condition, reinforcement condition are considered and compared with monitoring data. The strong unloading region next to excavation face and the deterioration of rock mass parameters of the region are considered in unloading rock mass mechanics, the calculating results agree well with the monitoring data. The result verifies the rationality of the method of unloading rock mass mechanics in calculating slope excavation and provides guidance for post-stage operation of slope; and it also can be meaningful and helpful to other projects.