川西南某金矿尾矿库稳定性评价研究  

Study on Stability Evaluation of a Gold Mine Tailings Reservoir in Southwest Sichuan Province

作　　者：杨帆[1,2,3] 张锐 陈宇[1,2,3] 郑志威 陈世华 YANG Fan;ZHANG Rui;CHEN Yu;ZHENG Zhiwei;CHEN Shihua(Regional geological Survey Team,BGEEMRSP,Chengdu,610213;Sichuan Rongda Mining Group Co.,Ltd,Chengdu 610213;Sichuan Rongda Pengcheng Construction Engineering Co.,Ltd,Chengdu 610213;State Key Laboratory of Geohazards Prevention and environmental Protection,Chengdu University of Technology,Chengdu 610059)

机构地区：[1]四川省地质矿产勘查开发局区域地质调查队,成都610213 [2]四川省容大矿业集团有限公司,成都610213 [3]四川省容大鹏程建设工程有限公司,成都610213 [4]地质灾害防治与地质环境保护国家重点实验室,成都理工大学,成都610059

出　　处：《四川地质学报》2024年第3期503-508,共6页Acta Geologica Sichuan

基　　金：四川省地质局区调队科研项目基金(容大科技科字(2023)03号)。

摘　　要：通过现场勘查及室内试验,并基于二维有限元分析软件GeoStudio室内数值模拟,对川西南某金矿尾矿库进行渗流、应力应变和稳定性研究分析。结果表明:(1)尾矿库堆积坝孔隙水压力从上到下逐渐增大,正常工况最大为864.98kPa,最小为-173.27kPa,洪水工况最大为874.49kPa,最小为-182.27kPa。(2)正常运行时,堆积尾矿向水平方向最大沉积位移25cm,竖直最大沉积位移28cm;洪水运行时,堆积尾矿向水平方向最大沉积位移34cm,竖直最大沉积位移35cm。(3)尾矿坝在正常工况、洪水工况下和特殊工况三种工况条件下运行时,稳定性计算结果均满足规范要求。Through field investigation and indoor tests,and based on two-dimensional finite element analysis software GeoStudio,indoor numerical simulation,the seepage,stress strain,and stability of a gold mine tailings pond in southwestern Sichuan were studied and analyzed.The results show that:(1)The pore water pressure increases gradually from top to bottom,with the maximum value of 864.98kPa and the minimum value of-173.27kPa under normal conditions.The maximum value of 874.49kPa and the minimum value of-182.27kPa under flood conditions.(2)During normal operation,the maximum horizontal displacement of tailings is 25 cm and the maximum vertical displacement is 28 cm.When the flood is running,the maximum horizontal displacement of tailings is 34 cm,and the maximum vertical displacement is 35 cm.(3)When the tailings dam operates under three operating conditions,normal,flood,and special,the stability calculation results meet the requirements of the specifications.

关 键 词：尾矿库 渗流 应力和变形 稳定性分析 

分 类 号：P642.5[天文地球—工程地质学]