For the development of low-cost,high accuracy and stability of the open water level sensors,using ultrasonic detection technology,this article designed a open channel water level sensor based on the STC89C52RC core,at the same time,it studied the mixed programming with C51 and assembler language.

This article has studied the role of clay overburden layer in prevention of contamination from seepage of wastewater ditch to underground water with a analogy method ,and in order to prevent contamination of seepage wastewater, the study defermined the critical thickness of clay overburd layer.

3-D numerical simulation on overbank steady open channel flows in compound channels;

Space-time correlations of velocity in open channel flows

In order to investigate the characteristic of open channel flow,a mathematical model is developed to compute the lateral velocity distribution in open channel flow.

The article sets forth the selection of the design scheme of the open drainage channel to underpass the expressway, the tunnel design and construction step flow as well as the construction monitoring methods.