基于岩体冻融损伤特性的高海拔高寒地区露天矿边坡 岩体力学参数修正方法

高海拔高寒地区露天矿边坡岩体的冻融损伤特性对边坡稳定性至关重要。以某高海拔高寒地区露天矿边坡为工程背景,深入分析了冻融循环作用下高寒地区岩体力学特性的变化规律,创新性的提出了基于岩体冻融损伤特性的高海拔高寒地区露天矿边坡岩体力学参数的修正方法,并运用于该露天矿边坡岩体力学参数的修正,得到了可反映岩体冻融损伤的力学参数组,为露天矿开采边坡角的确定和边坡稳定性分析提供了可靠的基础数据。

Modification of rock mass mechanical parameters of open-pit mine slope in alpine area based on freezing-thawing damage characteristics of rock mass

Freezing-thawing damage of rock mass in open-pit slope in high altitude and alpine area is crucial to the stability of slope. Taking an open-pit mine slope in high altitude and alpine region as the engineering background, the law of mechanical characteristics of rock under freezing-thawing cycles in the alpine region is analyzed, and then a new modification method for mechanical parameters of the open-pit slope rock mass in alpine area is proposed, which is based on freezing-thawing damage characteristics of rock mass. The method is then applied to modify the mechanical parameters of the rock mass of this open-pit slope, and several sets of mechanical parameters of rock mass corresponding to the cycles of freezing-thawing are obtained. It provides reliable basic data for the determination of slope angle and analysis of slope stability of the open-pit mine.