柴胡栏子矿采场围岩质量评价及力学参数预测  

Mechanical parameter prediction and surrounding rock quality evaluation of Chaihulanzi mine

作　　者：刘增辉[1] 张若飞[1] 高谦[2] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国科技论文》2016年第15期1726-1733,共8页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20123415120006);安徽省高校优秀青年人才支持计划重点项目(gxyqZD2016085)

摘　　要：为评价柴胡栏子金矿的采场围岩质量和预测其力学参数,采用测线法详细地对矿山的主要回采中段进行节理裂隙调查,分析得出,岩体的节理裂隙不发育,节理间距较大,整个岩体较完整;三中段有1组比较明显的以北西为主的节理优势面,倾向以南西方向的节理居多,另1组次节理优势面为东南方向,倾向为北东方向,而且倾角集中在65°-85°;四中段和五中段的节理裂隙比较分散,但有一组比较明显,以北西为主的节理优势面,倾向以南西方向的节理居多,而且倾角集中在72°-89°;从采场各中段围岩节理裂隙调查和岩性2个方面确定采场围岩属于Ⅱ,岩体质量较好;从岩石单轴抗压强度、地质强度指标、岩石材料参数和开挖影响因子4个参数综合考虑,获得了岩体的强度和变形参数。To evaluate the surrounding rock quality and predict its mechanical parameter, the joints and fissures in the middle of the main mining were carefully investigated and analyzed using scanline method. The results show that the joints and fissures in rock mass are not developed, the joint spacing is large, and the whole rock mass is relatively complete. The third middle mining area show that a group is the main north-west advantages face and the southwest joint tendency, and another group sub-surface is the joint advantage southeast direction and dip concentrated in the 65° -85°. The joint fracture of the fourth middle and the f i f th mining area is comparatively scattered, but one group is dominated north-west majority joints face, tendency for the majority southwest joint and dip concentrated in the angle 72° -89°. Based on the jo in t fracture investigations and lithology of the slope surrounding rock, the surrounding rock is TT and the rock quality is good. The rock mass strength and deformation parameters are obtained taking comprehensively account of the four parameters including the uniaxial compressive strength, geological strength index, rock excavation material parameters and factors.

关 键 词：采矿工程 节理裂隙 采场围岩 岩体质量评价 力学参数预测 

分 类 号：TD313[矿业工程—矿井建设]