THE INFLUENCES OF EVAPO-TRANSPIRATION ON THE GROUND
It is known that the vegetation is effective in preventing slope failure. This study focuses on the evapo-transpiration aspect of vegetation and show the way to estimate its effects on the ground quantitatively.The effect of evapo-transpiration can be regarded as reduction of water content within soil. The root element, where the reduction of water content occurs, is applied to the existing code of soil/water coupled finite element analysis with unsaturated soil mechanics. To estimate the effects of evapo-transpiration, three kinds of conditions, such as the amount of evapo-transpiration, the initial degree of saturation of the ground,and groundwater level are provided. Consequently, it was found that the evapo-transpiration increased suction and encouraged non-uniform settlement of ground surface. Its effects appeared prominently in a dry ground having low groundwater level and much evapo-transpiration. This method is effective to understand the effects of vegetation.
Katsuyuki Kawai Atsushi lizuka Shinya Tachibana
Department of Civil Engineering, Kobe University Center of Research for Urban Safety and Security, Kobe University Graduate School of Science and Technology, Kobe University
国际会议
南京
英文
359-364
2007-04-21（万方平台首次上网日期，不代表论文的发表时间）