渣场的一种新渗流排防体系研究

Study of a new drainage and prevention of permeance system of industrial residue deposit

通过对多个磷石膏渣场工程资料的理论分析,提出了一个新的渣场防渗排渗设计方案。该方案不同于常规方案之处是在磷石膏渣场下游的底部设置了排渗棱体,改善了磷石膏底部的排水条件,使磷石膏渣场的浸润线大幅下降。新方案不仅提高了磷石膏渣坝的安全性,还大幅度降低了渣场的运行费用,并在实际工程中得到了应用,取得了良好的效果。它不仅为磷石膏渣场的防渗排渗设计提供了切实有效的理论依据,而且对其他利用尾矿筑坝的渣场的防渗排渗设计有着重要的指导意义。

From the theoretical analyses of data in several practical projects of gypsum stacks, a new disposal scheme for drainage and anti-permeance system of tailings dam is proposed. By setting a drainage layer under the gypsum stack, it differs from traditional drainage plans so that it can improve the drainage efficiency at the bottom of the stack and depress saturation line level. The new scheme not only improves the security of the gypsum stack, but also reduces its running cost. Furthermore, it has been put into practice in several tailings dam projects and has achieved outstanding effect. It not only provides an efficient theoretical foundation for the design of gypsum stack, but also gives important guidance for the anti-permeance design of other kinds of industrial residue deposit.