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立堵截流具有施工准备工作量少、投资省、施工技术相对较简单等特点。大型施工机械在水利水电工程中日益普遍采用,截流施工技术日益完善,又为一般河道采用立堵截流提供了可靠保证。因此,立堵截流日益成为我国水利水电工程截断河流的主要方式(表1)。最近进行的万安水电站一期截流及葛洲坝工程大江截流,均采用单戗立堵法截流获得成功。万安一期截流规模中等,葛洲坝大江截流规模居世界前列,均具有一定代表性。现就这两个工程的截流施工实况及设计
Closure of Closure has the advantages of less construction workload, less investment and relatively simple construction technology. Large-scale construction machinery is increasingly used in water conservancy and hydropower projects, and the technology of river closure construction is increasingly improved. It also provides a reliable guarantee for the general riverway to adopt vertical blocking. Therefore, the closure of Closure is increasingly becoming the main method for cutting off rivers in China’s water conservancy and hydropower projects (Table 1). The recent closure of Wan’an Hydropower Station Phase I and the closure of the Gezhouba River project have all been successful with single 戗 vertical plugging. Wan’an a medium-scale closure of medium-scale, Gezhouba River closure of the largest in the world, have a certain representation. Now on the closure of these two projects construction and design