河南省某尾矿库坝体工程地质特性及稳定性评价
Engineering geological characteristics and stability evaluation of a tailings reservoir dam in Henan Province
李亚妹1
作者信息
- 1. 河南省资源环境调查二院有限公司,河南 洛阳 471000
- 折叠
摘要
河南省栾川县王家庄尾矿库地质构造简单,岩石物理力学特征稳定,采用"初期坝+后期上游式尾砂堆积筑坝"形式建造.尾矿库现状堆积坝滩顶标高约为 1031.5 m,水面标高 1027.33 m,现堆积坝高 131.5 m,现堆积库容为 960.0 万m3,坡比 1∶4.70.现有排水系统由排水井、主隧洞及各排水井支隧洞组成,其中 1#—4#排水井及其支隧洞均已按设计要求封堵,现使用的是 5#排水井.库区位于裸露基岩区,两侧山体岩壁陡峭,目前基本稳定;库区四周山体基岩出露,库岸基本稳定;对堆积坝体进行稳定性验算,最小安全系数大于 1.25,堆积坝体处于稳定状态.
Abstract
The Wangjiazhuang Tailings Reservoir in Luanchuan County,Henan Province,has a simple geological structure and stable rock physical and mechanical characteristics.It was constructed with an initial dam followed by an upstream tailing-stacked dam.The elevation of current stacking dam of tailings reservoir is about 1 031.5 m,with a water surface elevation of 1027.33 m.The height of current stacking dam is 131.5 m,and the current storage capacity is 9.6 Mm3,with a slope ratio of 1∶4.70.The existing drainage system is composed of drainage well,main tunnel,and branch tunnel for each drainage well,among which 1#-4#and its branch tunnel have been blocked according to the design requirements,and 5#drainage well is in use now.The reservoir area is located in the exposed bedrock area with steep mountain walls on both sides,which are basically stable at present.The surrounding bedrock around is exposed,and the banks are basically stable.Stability calculation for the stacking dam showed a minimum safety factor greater than 1.25,indicating that the dam is in a stable state.
关键词
尾矿库/工程地质/稳定性评价Key words
tailings reservoir/engineering geology/stability evaluation引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据