With regard to the reverse seepage of CFRD during construction,several schemes were introduced in the Chinese Specifications for Design of Concrete Face Rockfill Dam(DL/T 5016-1999),whereas no standard or method was stipulated as how to determine the quantity of reverse seepage during construction period.

Research on anti permeate thick drain rebirth using craft

Programmable control technology for seepage drainage system of Taipingwan Hydropower Station;

As a result of the dam s base rocks of Xiaodongjiang Hydropower Station were shattered,the grouted oar consolidated badly,the water seeped seriously and the available capacity of seepage catchment well was too small,the Xiaodongjiang Hydropower Station s service and seepage drainage systems were transformed for the first time.

The paper analyses the different layout schemes of anti seepage and draining system at Xiluodu underground power plant seated in the special rock formation and area with high water level,the results are important to design and construction of hydropower plant.