CAJ | 학술논문

降雨量的多少会影响尾矿坝的浸润线，尾矿坝浸润线的高低也是影响其稳定性的主要指标之一，因此研究尾矿坝稳定性就应该在研究浸润线影响的同时研究降雨量对尾矿坝稳定性的影响。在考虑尾矿坝原有浸润线的基础上，分别对2个尾矿坝剖面在正常水位、20 a一遇24 h最大降雨量、50 a一遇24 h最大降雨量和100 a一遇24 h最大降雨量的4种不同降雨工况下，采用极限平衡法中的瑞典圆弧法、毕肖普法和简布法3种不同的计算方法与渗流同步计算尾矿坝的稳定性，得出尾矿坝的最小安全系数与降雨量呈线性相关的关系，降雨量越大，尾矿坝最小安全系数就越小，尾矿坝越不稳定；尾矿坝面积越大，受降雨影响越大。
강우량적다소회영향미광패적침윤선，미광패침윤선적고저야시영향기은정성적주요지표지일，인차연구미광패은정성취응해재연구침윤선영향적동시연구강우량대미광패은정성적영향。재고필미광패원유침윤선적기출상，분별대2개미광패부면재정상수위、20 a일우24 h최대강우량、50 a일우24 h최대강우량화100 a일우24 h최대강우량적4충불동강우공황하，채용겁한평형법중적서전원호법、필초보법화간포법3충불동적계산방법여삼류동보계산미광패적은정성，득출미광패적최소안전계수여강우량정선성상관적관계，강우량월대，미광패최소안전계수취월소，미광패월불은정；미광패면적월대，수강우영향월대。
As rainfall usually influences saturation line of tailing dam,and saturation line is one of the main factors to af-fect the stability of the tailing dam. Therefore,to study the stability of tailing dam,the influences of saturation line and precipi-tation should also be investigated. Based on the saturation line of tailing dam,under four different rainfall modes of the normal water level,5% frequency maximum rainfall in 24 h,2% frequency maximum rainfall in 24 h,1% frequency maximum rainfall in 24 h,three kinds of calculation methods including Sweden arc method,Bishop method,and Janbu belonging to the limit equi-librium method,associated with seep synchronous computation,were employed to analyze the stability of tailing dam. It is re-vealed that minimum safety coefficient has a linear correlation with precipitation. The greater the rainfall,the less the minimum safety coefficient,and the more unstable tailing dam is. Also,the greater the tailing dam area,the greater the influence of rain-fall is.