1、前言实践证明,用缆索起重机向大坝输送混凝土,在所有的可能方案中是最合适的方法。在一个巨大而广阔的施工面积上,其它方法都不可能同样简便而高效地实现所要求的运输作业。河道两岸到大坝的通道处没有任何阻碍;建筑作业也完全不受起重机操作的干扰。大坝的每一处不论其提升高度或跨距如何,缆机小车都可以无困难地接近和工作。缆索起重机即使在由于雾而能见度降低,以及遇到障碍物或大雨时仍能继续工 1, Foreword Practice has proved that the use of cable cranes to deliver concrete to the dam, in all possible scenarios is the most suitable method. In a vast and vast construction area, none of the other methods make it equally easy and efficient to carry out the required transport operations. There was no obstacle to the passage of the dam from both banks of the river; construction operations were also not affected by the operation of the crane. Every part of the dam, regardless of its height or span, can be approached and worked without difficulty. Cable cranes continue to operate even in the event of reduced visibility due to fog and obstacles or heavy rains