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.
作者
余其品
龚明辉
肖雨
袁从华
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)
出处
《施工技术（中英文）》
CAS
2022年第22期141-145,共5页
Construction Technology
关键词
边坡工程
露天矿
单点法
直剪试验
强度参数
slope engineering
open pit mine
single-point method
direct shear test
strength parameters
