摘要
尾矿堆积坝渗透破坏是导致尾矿坝溃坝事故的重要原因之一,辐射井降水技术已逐步推广应用于尾矿堆积坝排渗加固工程。为了探讨主井与尾矿接触面的力学特征,介绍了自行研发的同心圆试验装置及测试方法、典型尾矿试样的室内试验研究,尤其对摩擦系数与尾砂干密度的关系,以及不同深度实际法向力的计算方法等进行了试验研究。
Seepage damage of tailings stacking dam is one of the important reason for causing tail-ings dam dam-break accident, dewatering technology of radial well has been gradually applied in elimi- nating seepage and strengthening engineering of tailings stacking dam. To find out mechanical character-istics between main well and contact surface of tailings, concentric test device and test method which based on the own research, lab experimental study results of typical tailings sample are introduced, espe-cially relations between friction coefficient and density of tailings stem, and calculation methods of practi-cal normal force at different depth and so on had been studied experimentally.
出处
《现代矿业》
CAS
2012年第12期29-31,33,共4页
Modern Mining
关键词
沉井
尾矿砂
同心圆剪切装置
摩擦特性
Open caisson, Mine tailing, Concentric circles shear device, Friction characteristics
