万家寨引黄工程联接段7^#隧洞设计方案比选

Selection of Design Scheme on Tunnel No.7 of " Connection Works" ,Wanjiazhai YRDP(Yellow River Diversion Project)

7#隧洞采用PCCP洞穿管单管输水设计方案在我国为首例,本文通过对7#隧洞常规处理方案和洞穿方案的设计比较,论述了穿管方案在施工、管理和维护等方面的优良性.

Comparison of two design schemes,a' tunnel- passing PCCP(prestressed cylinder concrete pipe)scheme' and a conventional treatment (reinforced concrete lining)scheme is made on tunnel No.7 of ' connection works',Wanjiazhai YRDP.It is evident that the former is better than the latter of the two design schemes by the comparison.In this paper,the superiority in the fields of construction,management and maintenence of the design scheme of ' tunnel- passing PCCP' is described in detail.