Application of PCCP pipeline to emergency water supply project(Beijing Section) for Beijing-Shijiazhuang Section in Mid-route of South-to-North Water Transfer Project;

Key technical problems during design and construction of emergency water supply project for Beijing-Shijiazhuang section in Mid-route of South-to-North Water Transfer Project

This paper introduces the construction with TBM in a certain water diversion project in West China under the poor geological conditions such as fault fractured zones, weak rock strata, and water-rich tunnel section,etc.

Based on the comparison of location of pipe line planning,pressure of water supply,soil character,construction and maintenance of the water diversion project for Daya Bay,PCP pipe is adopted as primary pipe material.

Summarized are the development of water diversion projects and their characteristics.

Impact assessment of new diversion works at Jiuxi in the Qiantang River to the water chlorinity near water-intakes of drinking-water plants;

Based on the large-scale production practice of the prefabricated concrete board in large diversion works,the production technological process and the control gist of the quality of product are summed systema tically.

How to consider the environmental feasibility of the diversion works of the surface water from the angle of the environmental economic profit and loss is a very important problem in the environmental impact assessment.