摘要
尾矿库是矿山生产中的重要措施,其安全性不仅关系到矿山生产的正常进行,也关系到周边居民的生命财产安全。尾矿坝是尾矿库中重要的组成部分,尾矿库所发生的事故多出现在尾矿坝的失稳破坏上,因而对于尾矿坝稳定性的研究至关重要。本文选取倮果沟口尾矿库的堆积坝进行研究,对其所处区域环境和地质构造、堆积坝本身结构与岩土体成分进行了调查,结合现场试验与室内试验取得的坝体不同岩土体成分的一系列物理力学参数,对堆积坝的在当前状况以及设计标高状况下的应力应变进行了分析,得到其应力应变分布规律。并提出现状坝体及最终设计坝高(1080m)在正常工况下整体稳定,基本无明显的应力集中现象;最大主应力无明显的应力集中现象,最小主应力在堆积斜坡坡度明显变换部位出现集中现象,未出现拉应力,同时局部剪应力较为集中,仅局部稳定性较差。
Tailings pond is the important measure in the mine production, whose security not only concerns the normal operation of the mine production, but also concerns the life and property security of nearby residents. Tailings dam is an important part of tailings pond. The accidents in tailings pond are mostly caused by the buckling failure of railings dam. So the research on the stability of tailing dam is very important. This article selects the fill dam of Luoguogou entrance tailings pond as the research object. Its regional environment and geological structure, the structure of the fill dam and the rack and earth mass component are investigated. Combined with the physical and mechanics parameters of the different rock and earth component of the dam got from field test and laboratory test, the stress-strain under the current condition and designed elevation of the fill dam is analyzed, and its stress-strain distribution rule is obtained. And it proposes that under normal condition, the current cam and ultimate design dam height （1080m） is generally stable without stress concentration phenomenon. The maximum principal stress has no obvious stress concentration phenomenon, and the minimum principal stress appear concentration on the accumulation slope gradient significantly transform parts, and there is no tensile stress. Local shear stress is concentrated at the same time, and only local stability is poor.
出处
《价值工程》
2015年第10期120-122,共3页
Value Engineering
关键词
尾矿库
尾矿坝
应力应变
railings pond
tailings dam
stress and strain
