某铜矿尾矿坝稳定性分析研究

以某铜矿尾矿坝为例,进行了调洪演算分析和稳定性分析。鉴于尾矿坝在堆积过程中形成的材料变异性较大,以极限平衡理论和传统的安全系数法为基础,将可靠度理论引入尾矿坝稳定性分析中并进行了初步的分析。分析结果表明,目前尾矿坝处于稳定状态,尾矿材料的重度与粘聚力对稳定性的影响较大,内摩擦角的影响则很微小。

Stability Analysis of Tailing Dam in A Copper Mine

Taking a copper mining tailing dam for example,the flood regulating calculation of tailings reservoir and stability analysis for the tailing dams have been carried out.The mechanical behavior of tailings materials are very different and anisotropic because they suffered circularly hydrodynamic settling for a long time.Therefore,analysis of the tailing dams by reliability theory is very important and feasible.The reliability theory application for the stability analysis of the tailing dams has been proposed based on the equilibrium theory and traditional safety factor method in this article.The analysis results indicate that the tailing dams were stable at present and in flooding periods.In addition,unit weight and cohesion of the tailing dams materials played more important roles than internal friction angle through reliability theory.