于家沟尾矿库不同堆积阶段稳定性数值模拟分析  

Simulation Study of Stability of Different Store Stage of Yujiagou Tailings Dam

作　　者：刘恒新 刘海舰[2] 杨安辉 

机构地区：[1]河北铜源矿山工程设计有限责任公司,河北保定071051 [2]中国地质大学(北京)工程技术学院,北京100083 [3]北京中水科水电科技开发有限公司,北京100038

出　　处：《岩土工程技术》2014年第2期83-87,共5页Geotechnical Engineering Technique

基　　金：国家重点基础研究发展计划("973"计划)项目(2011CB013502);国家自然科学基金资助项目(51179210)

摘　　要：利用Geo-Studio软件中的渗流分析模块SEEP/W及土石坝稳定分析系统HH-SLOPE软件,对于家沟尾矿库不同堆积阶段渗流稳定性及尾矿边坡稳定性进行了模拟分析,揭示滩顶高程分别为840m、875m、900m及950m时尾矿坝的渗流场变化规律以及稳定性变化规律。结果表明:干滩长度、运行水位及滩顶高程对尾矿库渗透稳定性都具有一定的影响,渗透比降较高位置主要集中于上游坝坡坡脚位置。在各种工况下,边坡稳定安全系数均大于抗滑稳定最小安全系数,尾矿库坝稳定性较好。研究结果对于于家沟尾矿建设具有一定的参考性。Using the simulation software SEEP/W of Geo-Studio and embankment stability analysis system software HH-SLOPE, the seepage stability and slope stability of different store stage of Yuiiagou tailings dam are studied. The change rules of seepage and stability of slope are researched when the elevation of the beach crest is 840 m, 875 m, 900 m and 950 m. The results show that the dry beach length, operating water level and elevation of the beach crest have certain influence on the seepage field stability of the tailing reservoir, the higher seepage gradient focused on upstream slope toe positiorL In different working conditions, the safety coefficient of dam slope stability is higher than the minimum safety coefficient of anti-sliding sta- bility. It also indicates that the tailings dam is stable. The results of research provide a reasonable reference to the construction of Yujiagou tailings darn.

关 键 词：尾矿库 渗流场 抗滑稳定性 数值分析 

分 类 号：TU441.35[建筑科学—岩土工程] TB115[建筑科学—土工工程]