【摘要】 为减小堰塞湖的危害,对其成因进行了分析:特殊的地质地貌与河谷斜坡,是形成堰塞湖的内因;降水、地震、加载、坡脚淘蚀或开挖、水位骤然升降、火山爆发、冰河崩解等是形成堰塞湖的诱因。论述了堰塞坝的工程地质问题,并以唐家山堰塞湖为实例,对其抢险处理方案作了介绍,具体为:机械开挖泄流明渠,借水力将其拓宽,逐渐扩大泄流能力,避免发生突然溃坝。对指导堰塞湖的应急处置具有一定的指导作用。更多还原

【Abstract】 The dammed lakes have brought huge disaster to human beings,however,some have created the values of tourism and power generation.The dangers and values of dammed lake are described,and the genesis and engineering geological problems are analyzed.Taking Tangjiashan Dammed Lake as example,the emergency treatment scheme is introduced,in which,the diversion open channel is excavated by machines and widened by hydaulic power to increase its discharge capacity and to avoid sudden dam outburst.更多还原