山西省万家寨引黄工程概述

A Brief Introduction on Shanxi Wanjiazhai Yellow River Diversion Project

山西省万家寨引黄工程是一项解决山西省太原、大同、朔州等地区水资源紧缺，促进工农业发展，提高人民生活水平，维系国家能源重化工基地发展的生命工程。整个工程投资大，科技含量高，施工难度大，管理任务重，是举世罕见的大型跨流域引水工程。工程由万家寨水利枢纽、总干、南干、南干联接段及北干等部分组成。

The Shanxi Wanjiazhai Yellow River Diversion Project(YRDP)is what is called a “life project”.It will not only settle once for all the water shortage problem in nation's bases of energy,heavy and chemical industries of Taiyuan,Shuozhou and Datong Cities,ensuring these districts' continuous development thereby but also will be able to promote the development of industry amd agriculture all over the province,to raise the living standard of the local people.The project consists of the Wanjiazhai Dam,the General Main Line,the South Main Line,the North Main Line and the Connection Works. The Wanjiazhai Dam,of the concrete gravity type,is located along the main stream of the Yellow River,the west of Wanjiazhai Village,Pianguan County,Shanxi Province.The dam is 90m high at the highest point.The total capacity of the reservoir is 896 million m 3.The power station at the toe of the dam has an installed capacity of 1.08 million kw and an annual energy output of 275 thousand kw.The water intake for the diversion project is located at the left side of the dam. The General Main Line extends from the water intake to Xiatuzhai Village of Pianguan County,with a total length of 44.4 km. The flow rate at this section is 48m 3/s and its annual diversion capacity is 1.2 billion m 3.The South Main Line starts from Xiatuzhai Village and ends at Toumaying Village in Ningwu County,with a total length of 102.08 km.The flow rate at this section is 25.8m 3/s and its annual diversion capacity 640 million m 3.The Connection Works refers to the section from Toumaying Village to Huyan Water Treatment Plant,of which the total length is 139.4km.The North Main Line runs from the bifurcation at Xiatuzhai Village to the Zhaijiaxiaocun Reservoir of Datong City via Shuozhou,where the water conveyance line turns off to the north,its total length is 166.88km,flow rate is 22.2m 3/s,the annual delivery is 560 million m 3. The over all length of the water conveyance line of the Yellow River Diversion Project totals 452.8 km,including 208.22km of tunnels,101.88km of culverts,40.3km of pipelines.Besides,there are 39 aqueducts,6 inverted siphons,6 pump stations and 3 reservoirs on the water conveyance line .The total lift of the 6 pump stations is 636m and their total installed capacity of 459 thousand kw.The three reservoirs,for regulating purpose,have a total regulating capacity of 288 million m 3. The Yellow River Diversion is divided into two stages.The first stage includes the General Main Line,the South Main Line,the Connection Works and the installation of part of the pump units,taking aim at supplying water to Taiyuan area.The second stage includes the North Main Line,the regulating reservoirs of the South Main Line and the installation of the remaining pump units.The International Competitive Bidding (ICB)and National Competitive Bidding(NCB)are to be put into practice. The Shanxi Wanjiazhai Yellow River Diversion Project will best meet the water needs of its service area till 2020 or an even longer duration.