Experimental research on behaviors of pore-water and air in a slope

研究发现，孔隙空气压力影响非饱和土的非饱和渗流行为。也有报道说，洪水造成河堤溃决后，土壤中会产生大量的气泡。本项目采用圆柱土箱和土槽进行室内试验，研究了不同降雨强度和边界条件下孔隙水压力和孔隙空气压力的变化规律。文中还描述了现场监测所得孔隙水压力和孔隙空气压力的变化规律。这些结果表明，孔隙空气压力的测量阐明了非饱和土中孔隙水压力的行为。

It has been observed that pore-air pressure affects unsaturated seepage behavior in unsaturated soils. It has also been reported that a large number of air bubbles can develop in soils after a river dike failure resulting from a flood. In this project, laboratory tests using a cylindrical soil box and a soil tank to investigate the behaviors of the pore-water pressure and the pore-air pressure under the different rainfall intensity and boundary conditions are reported. The behaviors of the pore-water pressure and pore-air pressure measured by a field monitoring are also described. As the results, these results suggest that measuring of the pore-air pressure clarifies the behaviors of pore-water pressure in unsaturated soil.