Failure characteristics and its influencing factors of talus-derived rock mass during open-pit mining

作     者：王贵和 杨宇友 张辉 张子新 Gui-he WANG;Yu-you YANG;Hui ZHANG;Zi-xin ZHANG

作者机构：中国地质大学(北京)工程技术学院北京100083 上海建科工程咨询有限公司上海200032 同济大学工木工程学院上海200092 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第2期

页      面：462-471页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Project (41202220) supported by the National Natural Science Foundation of China Project (2-9-2012-65) supported by the Fundamental Research Funds for the Central Universities, China Project (20120022120003) supported by the Ph.D Program Foundation of Ministry of Education of China 

主　　题：talus-derived rock mass model test failure mode rainfall open-pit mining 

摘      要：The failure characteristic of talus-derived rock mass continues to challenge quantitative hazard assessments in open-pit mining. Physical model test was used to assess the failure modes and mechanisms on talus-derived rock mass. The different types of failure modes of the talus-derived rock mass were introduced and a possible failure mechanism relation between the failure zone and the structure of the talus-derived rock mass was also shown. The physical model test results indicate that the rainfall has significant influence on the stability and failure modes of talus-derived rock mass during open-pit mining. The development of the seepage area caused by rainfall initiates the localized failure in that particular area, and the initiation of localized instability is mainly induced by stress changes concentrated in the seepage area.