Aimed at the characteristics of moving riverbed sand and taking the water-flow model as the starting point of investigation,the interaction of water-flow with the sand was analyzed by means of dividing the flow into two parts as principal flow layer and bottom sand promoted layer,and the resistance of moving riverbed sand as well as the transportation pattern of bottom sand was discussed.

Aiming at the phenomenon of cutting slippage between the layers of the asphalt pavement, a machine is designed to test the shear-strength between pavement layers.

Reasons of bitumen road s processing and its protecting methods;

For the translation problem of bituminous pavement,the paper discussed that and proposed relative countermeasures.

The paper introduced the concept of bituminous pavement translation disease,analysed its cause and proposed protective countermeasure.

Through construction practice,the paper discussed test of initial translation prevention of bituminous pavement and proposed their ideas of technical measures etc.

Through the investigation of the slippage between layers of asphalt concrete pavements,the main causes of slippage are analyzed,then the test roads are paved with the technologies of fiber-reinforced asphalt concrete overlays and wire-net reinforced asphalt concrete mixes.

We study the mechanism of slippage in rural road surface in Liaoning Province from a theoretical point of view in order to find reasonable technical measures to handle problems aroused.

The transposition and attenuation actions of flood wave are defined by means ofconvection and diffusion equation.