降雨对良山太平尾矿坝稳定性影响分析  

Stability analysis of Taiping dam in view of rainfall

作　　者：陈承[1] 程三建 张亮[1] 王柳[1] 黄超[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2015年第2期94-98,共5页Nonferrous Metals Science and Engineering

基　　金：江西省研究生创新专项资金资助项目(YC2014-S350);江西理工大学研究生创新专项资金项目(YC2013-X02)

摘　　要：为研究降雨对良山太平尾矿坝稳定性的影响,借助Geostudio的SEEP/W模块建立了坝坡渗流场模型,在设置岩土体力学参数、渗流参数后,分别以10年、25年、50年和100年一遇的降雨强度作为工况点,进行不同强度降雨条件下坝坡稳定性分析,并获取了降雨强度、降雨持续时间与坝坡稳定性的关系曲线.结果表明:随着降雨持续延长,坝坡安全系数降低,在坝脚处渗流集聚,易造成局部失稳;针对不同的降雨强度,均可参照关系曲线,对尾矿库的运行状态进行安全预测和警戒,工程意义深远.In order to study the influence of rainfall on stability of Taiping dam in Liangshan,the SEEP/Win Geostudio is used to establish a seepage field. After setting the parameters in rock or seepage with 10 years, 25 years, 50 and 100 years as a point of rainfall respectively, slope stability analysis under different rainfall durations is carried out to obtain relation curve of rainfall intensity ,rainfall duration and dam stability. The re- sults show that when rainfall durations are longer, dam safety factor becomes lower and the gathering at the foot of dam can easily lead to negative stability; security forecasting can be made for tailing dam in different rainfall intensity by means of the curve, which is of far-reacbin~ significance.

关 键 词：降雨强度 渗流场 安全系数 太平尾矿坝 

分 类 号：TD325.4[矿业工程—矿井建设]