Safety assessment of waste rock dump built on existing tailings ponds

作     者：李全明 袁会娜 钟茂华 LI Quan-ming;YUAN Hui-na;ZHONG Mao-hua

作者机构：China Academy of Safety Science and Technology State Key Laboratory of Hydroscience and Engineering Department of Hydraulic Engineering Tsinghua University 

基　　金：Projects(51209118,71373245)supported by the National Natural Science Foundation of China Project(2014JBKY01)supported by the Fundamental Research Funds for CASST,China 

出 版 物：《中南大学学报：英文版》 (Journal of Central South University)

年 卷 期：2015年第22卷第7期

页      码：2707-2718页

摘      要：The construction of waste rock dumps on existing tailing ponds has been put into practice in China to save precious land resources. This work focuses on the safety assessment of the Daheishan molybdenum mine waste rock dump under construction on two adjoining tailings ponds. The consolidation of the tailings foundation and the filling quality of the waste rock are investigated by the transient electromagnetic method through detecting water-rich areas and loose packing areas, from which, the depth of phreatic line is also estimated. With such information and the material parameters, the numerical method based on shear strength reduction is applied to analyzing the overall stability of the waste rock dump and the tailings ponds over a number of typical cross sections under both current and designed conditions, where the complex geological profiles exposed by site investigation are considered. Through numerical experiments, the influence of soft lenses in the tailings and possible loose packing areas in the waste rock is examined. Although large displacements may develop due to the soft tailings foundation, the results show that the waste rock dump satisfies the safety requirements under both present and designed conditions.

主 题 词：尾矿库 安全评价 土场 矿山废石场 地质剖面 设计条件 瞬变电磁法 强度折减法 

学科分类：0810[工学-土木类] 081902[081902] 0819[工学-海洋工程类] 0806[工学-电气类] 08[工学] 0805[工学-能源动力学] 0703[理学-化学类] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11771-015-2801-6

馆 藏 号：203108962...