珲春曙光金铜矿断裂蚀变带分布特征及边坡稳定性分析

Distribution characteristics of fracture alternated belt and slope stability analisis in Hunchun Shuguang Gold Copper Mine

基于钻孔取芯、钻孔波速等现场勘测手段,获取了断层蚀变带产状特征和矿区岩体特征,建立了包含典型断裂蚀变带分布特征岩体地质模型。用点荷载实验获取不同岩性的试件的抗压强度,结合矿区内节理分布特征运用Hoek-Brown得到岩体强度参数,结合有限元方法分析了边坡稳定性特征。结果表明,断裂蚀变带与岩体交错是基本构造和矿化形式,破裂带是影响边坡稳定性的主导因素。

Based on the in-situ test including drilling core and drilling velocity, the characteristics of fault alteration zone and rock mass are obtained, then the geological model of rock mass with typical rupture zone distribution is established. The parameters of rock mass and distribution characteristic of joints are also gained considering the point loading experiment and the Hoek-Brown law. The finite element method are chosen for the analysis of slope stability. The cross of fracture alteration belt and rock mass is the basic structure and mineralization form, and the rupture zone is the dominant factor affecting slope stability.