尾矿坝地震液化简化判别法

尾矿坝地震液化简化判别法 English Version

摘要: 本文通过对３种坝高、五种剖面刚度、４条输入地震动及３个输入加速度峰值共计６０个工况的尾矿坝所进行的二维地震反应分析的结果进行统计分析，得出了适合类似于大石河尾矿坝等上游筑坝法尾矿坝沉积滩表面加速度放大系数简化计算式，对坝体内土中剪应力折减系数也给出了建议值，从而可以简化计算坝体沉积滩内的地震剪应力。在此基础上，结合Ｓｅｅｄ的液化简化判别公式，提出了一个新的尾矿坝地震液化的简化判别法
- 尾矿坝 /
- 液化 /
- 加速度放大系数 /
- 简化判别法
Abstract: In this paper,the two-dimensional seimic response analysis of tailing dam has been carried out for sixty case includingdifferent height and stiffiness of dam,and various input ground motions and peak accelerations,By the statistical analysis asimplified formula for calculating amplification of acceleration is given. Because a recommened value of the shear stress reductioncoefficient in the soil has been presented,it is simple to calcalate seismic shear stress. Based on the above results,Seed’s methodfor evaluating liquefaction is modified and a new simplified procedure for evaluating liquefection potential of tailing dam is proposed.
- tailings dam /
- liquefaction /
- acceleration amplifaction coefficient /
- simplified procedure.