期刊论文

中文

有色金属工程

2095-1744

2019

9

8

116-126

10.3969/j.issn.2095-1744.2019.08.017

湖南省研究生创新项目(CX2016B435) 湖南省自然科学基金项目(2018JJ2331).

本校为第一机构

强降雨是影响尾矿坝安全的重要因素之一,同时尾矿堆积坝在建造的过程中随着选矿工艺的改变堆坝尾砂的粒径分布也随之变化。为了研究不同组构尾矿堆积坝在强降雨条件下的稳定性,以湖南某铅锌矿尾矿堆积坝为研究对象,在分析该尾砂坝各级堆积子坝的尾矿砂物理力学性质的基础上,采用数值模拟方法研究了该尾矿坝在强降雨作用下不同时期堆积子坝的稳定性。研究表明:1)不同高度堆积子坝的尾砂组构不同,其不均匀系数、曲率系数以及黏聚力不同,尾矿堆积坝的安全系数与尾砂黏聚力呈正相关关系,与尾砂的不均匀系数呈正比,与曲率系数呈反比;2)相同降雨强度,降雨时长的增加对尾矿堆积坝整体稳定性影响小,但对...

Heavy rainfall is one of the important factors affecting the safety of tailings dams.At the same time,the particle size distribution of the tailings changes with the change of the beneficiation process during the construction of the tailings dam.In order to study the stability of tailings fill dams with different structures under heavy rainfall conditions,a lead-zinc ore tailings dam in Hunan province was selected as the research object,and the physical and mechanical properties of the tailings of fill dams at each level of the tailings dam were analyzed.The numerical simulation method was use...