司家营铁矿东帮边坡岩体力学参数确定及稳定性分析

为全面了解露天矿边坡的地质情况和获取可靠的岩体力学参数，进行边坡的稳定性分析，结合司家营铁矿东帮现有的地质资料，利用现场勘查、地质钻孔、孔内电视等技术手段补充调查地质信息，通过3GSM摄影测量技术、点荷载实验分别获取结构面信息及岩石力学信息，采用BQ岩体质量分级和广义Hoek-Brown强度准则，获得了边坡稳定性计算分析所用的基本参数；并以边坡典型剖面为例，计算坡面安全系数。结果表明：东帮N9-N15区域原设计最终边帮达不到安全系数要求，应注意疏干排水并采取必要的治理措施，确保该矿东帮稳定性。

Determination of Mechanics Parameters of Rock Mass in Sijiaying Iron Mine East Slope and Its Stability Analysis

To fully understand the geological situation of open pit slope and obtain reliable rock mass mechanical parameters，the slope stability is analyzed.Combining with the geological information of east slope of Sijiaying Iron Mine，the technical means are adopted to enrich the geological information，such as field survey，geological drilling，borehole TV and other technical methods，and the joints and the rock mechanics information are obtained separately by 3GSM and the point load testing.Rock mass rating BQ classification and Generalized Hoek-Brown Strength Criterion are adopted to acquire the basic parameters for computation of slope stability.With the typical sections as a case，the slope safety factors are calculated out.The result show that the original designed final pit slope wall of the N9-N15 area of the east slope cannot reach the requirements of safety factors.The mine should pay attention to drainage and take necessary measures to ensure the stability of the east slope.