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１ 前言 我省东部黄土高原具有高寒的气候特点，这一地区的土壤成土母质为黄土和第三纪红粘土，土料的特点是土层薄，土壤粘性大。独特的气候和自然地理特点，使该地区水坠法施工筑坝过程中一些影响工程施工安全和投资效益的问题愈来愈突出，水坠坝体脱水固结缓慢，坝体反滤及
1 Introduction The Loess Plateau in the eastern part of our province has the characteristics of alpine climate. The soil parent material of this area is loess and Tertiary red clay. The characteristics of the soil are that the soil layer is thin and the soil is viscous. Due to its unique climate and natural geography, some problems that affect the construction safety and investment benefit of the project during the construction of the water drop method in the area have become more and more prominent. The dehydration and solidification of the water-dam body is slow,