申家峪尾矿库三维渗流稳定分析与研究

为确保申家峪尾矿库坝体的安全稳定,根据尾矿库工程地质和水文地质的实际情况,对申家峪尾矿库的渗流条件进行了符合实际情况的假设,并建立了反映主要坝体结构和周边岩体特性的三维有限元模型。通过MIDAS/GTS NX计算软件的数值模拟,分析了尾矿坝终期标高340 m时正常工况下坝体的渗流特性和正常运行条件下的渗流情形;评价分析了尾矿库在终期堆积标高时的渗流稳定性,并为坝体抗滑稳定验算提供了准确的浸润面位置。通过工程分析证明,利用MIDAS/GTS NX计算软件可以较好地模拟尾矿库的渗流特性,对尾矿库的安全生产有一定的参考价值和指导意义。

Three dimensional analysis and study of seepage stability in Shenjiayu tailings dam

To ensure the safety and stability of the dam of Shenjiayu tailings pond,the paper based on actual engi-neering geologic and hydrogeologic conditions of the tailings pond makes reasonable assumptions about seepage condi-tions of Shenjiayu tailings pond and sets up 3D finite element model that reflects the structure of major dam and char-acteristics of surrounding rocks.According to the numerical simulation of MIDAS/GTS NX software,seepage features of the dam under normal operation conditions when the final phase elevation of the dam is 340 m and the seepage status under normal operation conditions are analyzed.The seepage stability in the final phase when elevation is accumulated is evaluated and analyzed,and accurate position of phreatic surface is provided for the calculation of stability against sliding.According to the engineering practice,MIDAS/GTS NX can simulate the seepage characteristics of tailing pond with satisfactory results, and therefore has certain reference and guidance significance for safe operation of tailings pond.