The Intelligent water level meter by the buoy is designed to meet the need of water discharge auto-measurement at the outlet of irrigation channel of the Yellow River.

According to the characters of the irrigation canals along the Lower Yellow River, which are tree-branches layout, artificially control drainage, large rang sand concentration etc.

It makes a brief introduction to option section of large-span aqueducts of irrigation channel in Ningxia,hydraulic calculation,aqueduct shell two-way prestress design,sidewall precast lifting,aqueduct pier,support and bored pile foundation design,precast and cast-in-situ construction control,etc.

Construction Technique of Seepage Control Engineering ofShengli Yinhuang Main Canal;

Study on mathematical modeling for non-uniform sediment transport in an irrigation district along the lower reach of the Yellow River;

Several forms of sediment disasters in irrigation districts along the Lower Yellow River are discussed in this paper.