虹吸井子结构法在尾矿坝复杂渗流场求解中的应用

针对尾矿坝特有的防渗排水措施(如虹吸井、导渗盲沟、辐射井等)通常难以精细模拟其排水效果和整体三维渗流场,提出一种适合求解布置有复杂排水系统的尾矿坝三维渗流场的虹吸井子结构法。以某尾矿坝为例,采用虹吸井子结构法对尾矿坝三维渗流场进行有限元数值模拟分析,研究虹吸井和导渗盲沟联合作用的防渗效果以及虹吸井部分失效对渗流场的影响,为尾矿坝复杂排水系统的设计提供理论支持。

Application of siphon well substructure method in solution to complex seepage fields of tailing dams

With regard to the difficulty to accurately simulate the drainage effects and the integral 3D seepage fields of the special anti-seepage and drainage measures for tailing dams such as siphon wells,guided blind ditches and radiation wells,a siphon well substructure method was proposed.Based on a tailing dam case,3D finite element numerical simulation of its seepage fields was investigated by use of the siphon well substructure method.The combined anti-seepage effects of siphon wells and guided blind ditches as well as the influences of partial failure of siphon wells on the seepages were studied so as to provide theoretical support for the design of complex drainage system of tailing dams.