易游官方网站——易游的资源中心和服务中心

In this revision, the main framework and content of the standard DLT 5109-1999 have been maintained. Some chapters have been supplemented, adjusted and modified. The code NBT 35007-2013 consists of ten chapters and five appendices. The ten chapters aregeneral provisions, terms, basic requirements, surface structures, underground structures, seepage control works, slope works, natural construction materials, reservoir, and data compilation and archiving.