大场金矿露天边坡岩体质量评价与岩土体力学参数研究

边坡稳定性研究过程中,岩土体物理力学参数的选取是极其关键的基础工作.通过现场钻孔成像、钻孔岩芯编录等工程地质、水文地质补充勘察工作,以及现场岩芯点荷载试验、室内岩石试验成果整理,采用CSIR法、Q系统法和GSI法对边坡岩体进行了质量评价,并确定了各岩组的评价指标GSI平均值.以岩体质量评价成果为基础,采用费辛柯法、格吉法和GSI法等方法,对岩石的力学参数进行了工程弱化处理,经过综合对比,确定了边坡岩土体的力学参数,为大场金矿边坡稳定性研究提供基础参数.

Rock Mass Quality Evaluation

In the process of study on the slope stability, the physical and mechanical parameters selection of rock and soil is an extremely key and basic work. Based on field borehole imaging and borehole core logging of engineering hydrological geological supplementary investigation work and so on, as so as resulted for field borehole core point load and laboratory rock tests, this paper has evaluated the slope rock mass quality by using CSIR, the Q system and GSI methods, and identified each rock group GSI average value; Based on these evaluation results of rock mass quality, the paper has engineering weakened the rock mechanical parameters by using Feixinke, georgi, and GSI methods and so on, then determined the slope rock and soil mechanical parameters by comprehensive comparison, and provided the basic parameters for study on the slope stability at Dachang gold mine.