北衙露天金矿边坡岩体力学参数直剪试验研究  

Direct Shear Test Study on Mechanical Parameters of Slope Rock at Beiya Open Pit Gold Mine

作　　者：余其品 龚明辉 肖雨 袁从华[4] YU Qipin;GONG Minghui;XIAO Yu;YUAN Conghua(Yunnan Gold Mining Group Co.,Ltd.,Kunming,Yunnan 650200,China;Heqing Beiya Mining Co.,Ltd.,Dali,Yunnan 671507,China;School of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan,Hubei 430068,China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China)

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650200 [2]鹤庆北衙矿业有限公司,云南大理671507 [3]湖北工业大学土木建筑与环境学院,湖北武汉430068 [4]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《施工技术（中英文）》2022年第22期141-145,共5页Construction Technology

摘　　要：岩体力学参数是开展边坡稳定性的基础,常采用现场原位试验,但大量工程实践表明,多点法受试验场地条件的限制,试样制作耗时长、经济效益差。依托云南北衙露天矿边坡稳定性研究工程,在西北区1734平台开展单点法原位直剪试验,根据现场调查确定斜推方向为30°。试验发现3号试验点岩体完整性显著高于其他点,因此获取的强度参数最大,建议基于规范以标准值作为露天矿西北区边坡的岩体参数。The mechanical parameters of rock mass are the basis of slope stability.However,a large number of engineering practices show that the multi-point method is limited by the test site conditions,and the specimen production is time-consuming and economically inefficient.Relying on the slope stability research project of Beiya open pit mine in Yunnan,a single-point method in-situ direct shear test was carried out at platform 1734 in the northwest zone,and the direction of diagonal thrust was determined to be 30°based on the site investigation.The test found that the integrity of the rock mass at test point 3 was significantly higher than the other points,and therefore the strength parameter obtained was the largest.It is recommended that the standard value be used as the rock mass parameter for the slope in the northwest mining area based on the code.

关 键 词：边坡工程 露天矿 单点法 直剪试验 强度参数 

分 类 号：TU452[建筑科学—岩土工程]