摘要
针对某山谷型尾矿库,采用Rhino和Griddle软件建立尾矿库三维数值模型;采用FLAC3D软件对尾矿库在正常水位及洪水位下的浸润线进行模拟计算,结果表明浸润线埋深符合有关规范的要求,但是随着干滩长度的减小,浸润线埋深变小,将不利于尾矿库的安全稳定;采用流固耦合理论对尾矿库在正常水位及洪水位下的应力场、位移场及稳定性进行研究,结果表明,随着库水位的抬升,尾矿库应力和位移总体上均呈现增加趋势;采用强度折减法对正常及洪水位下的尾矿坝稳定性进行了计算,得到尾矿坝的相应安全系数分别为2.914和2.69,说明库水位的抬升将导致尾矿坝的稳定性降低。
Taking a valley-type tailings reservoir as an example,a three-dimensional numerical model for the tailings reservoir is firstly established with Rhino and Griddle software.Then,FLAC3D was adopted to simulate the saturation line of tailings reservoir at normal and flood water levels.It is found that the buried depth of saturation line can meet with the standard requirements.However,with the decrease of dry beach length,the buried depth of saturation line decreases,which is not conducive to the safety and stability of the tailings reservoir.Moreover,the fluid-solid coupling theory was adopted to study the stress field,displacement field and stability of the tailings reservoir at normal and flood water levels.The results show that with the rise of water level,the stress and displacement of the tailings reservoir show an increasing trend on the whole.Finally,the strength reduction method was adopted to calculate the stability of the tailings dam at normal and flood water levels,and the corresponding safety factors are 2.914 and 2.69 respectively,namely the rise of the reservoir water level will lead to a reduction in the stability of the tailings dam.
作者
刘红岩
刘康琦
周月智
张光雄
邹宗山
王光兵
LIU Hongyan;LIU Kangqi;ZHOU Yuezhi;ZHANG Guangiong;ZOU Zongshan;WANG Guangbing(School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Poly Explosive Hami Co.,Ltd.,Hami,Xinjiang 839200,China)
出处
《矿业研究与开发》
CAS
北大核心
2023年第11期129-136,共8页
Mining Research and Development
基金
哈密市科技计划项目(hm2021kj08)。
关键词
尾矿库
渗流场
浸润线
流固耦合
三维数值模拟
Tailings reservoir
Seepage field
Saturation line
Fluid-solid coupling
Three-dimensional numerical simulation
