Artificial neural network method for forecast of underground water level
zheng shu yan 1; 2 ; li zhan bin 1; li xi an 2(1.institute of soil and water conservation; the chinese academy of sciences and ministry of water resources; yangling; shaanxi 712100; china; 2.chang an university; xi an; shaanxi 710054; china)
Bedding stuff test research for the upstream cofferdam in Heihe dam
li zhen 1; kang shun xiang 1; guan zeng sheng 2(1.the college of water conservancy and architectural engineering; northwest sci-tech university of agriculture & forestry; yangling; shaanxi 712100; china; 2.baojixia management bureau of shaanxi provi