水电工程土石围堰设计中的若干问题

依据工程实践,系统阐述对围堰堰型、堰体组成、堰基防渗、龙口设计、抛体稳定等.围堰设计应尽量考虑利用当地材料,力求经济合理,施工简便,以及后期拆除方便等因素.围堰型式、平面布置、围堰断面结构及基础处理等宜进行多种方案研究,并通过综合经济分析比较最后确定.

A Certain Number of Problems in Design of Earth--rock Cofferdams for Construction of Hydropower Projects

In accordance with the engineering practice the paper systematically explains type and composition of the cofferdam, seepage control of the cofferdam foundation, design of its closure and stability of its dumped rockfill. The design of a cofferdam shall take into account such factors that local materials shall be used as much as possible and every effort shall be made to construct the cofferdam in such a way that it is economically rational, easy to construct and to remove in later stage. As for the type of cofferdam, its plan layout, its section structure and its foundation treatment, various alternatives shall be studied so that the best alternative could be finalized after comprehensive economic analysis and comparison.