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m 3,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。
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 1031.5 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 Mm 3,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.
作者
李亚妹
LI Yamei(The Second Institute of Resources and Environment of Henan Province Co.,Ltd.,Luoyang 471000,Henan,China)
出处
《资源信息与工程》
2024年第2期67-69,73,共4页
Resource Information and Engineering
关键词
尾矿库
工程地质
稳定性评价
tailings reservoir
engineering geology
stability evaluation
