赣南某地离子型稀土矿体边坡稳定性研究  

Study on slope stability of ion-type rare earth ore body in Gannan

作　　者：刘剑[1] 姚康[1] 黄健[1] 

机构地区：[1]江西理工大学建筑与测绘工程学院,江西赣州341000

出　　处：《世界有色金属》2017年第9期172-172,174,共2页World Nonferrous Metals

基　　金：国家自然科学基金资助项目(51264008;41602311;51664015);江西省自然科学基金(20151BAB206023;20133ACB20003);江西省教育厅科技落地计划项目(KJLD14042)

摘　　要：赣南某地离子型稀土矿体的边坡稳定性计算,采用何种强度指标较为安全。使用GDS三轴仪测得土的强度参数,通过现场试验测得矿体的参数,利用数值模拟计算出不同强度指标下的安全系数。试验结果表明:赣南某地离子型稀土矿体边坡稳定分析时,采用总应力强度指标计算出的安全系数小于采用有效应力指标计算出的安全系数。考虑其边坡稳定性时,采用总应力强度指标更为安全。针对赣南某地离子型稀土矿体,当注液范围为30%,临界注液强度分别为0.3方/米·天。Calculating the slope stability of ion-type earth ore body in Gannan, which strength index is more secure. The strength parameters of soil were measured by using GDS three axis instrument. The parameters of ore body are measured by field test. Calculating the safe factor in different strength index by numerical simulation. The results of the experimental show that the safe factor calculated by the total stress intensity index is less than the safe factor calculated by the effective stress index for analysis of slope stability of ion type rare earth ore body in Gannan. Considering the slope stability, the total stress intensity index is more secure. In the case of an ion type rare earth ore body in Gannan, the critical injection intensity is 0.3 square meters per day when the liquid injection range is about 30%.

关 键 词：边坡稳定 强度指标 数值模拟 

分 类 号：TU413[建筑科学—岩土工程]