ONE-DIMENSIONAL CONSOLIDATION OF AQUITARD CONSIDERING NON-DARCY FLOW
There sometimes exits the notable difference between the solution of one-dimension consolidation of aquitard based on Terzaghis theory and the field settlement observations, which can be in a certain extent ascribed to that the flow of pore water in the aquitard may not obey Darcys law. In order to improve the precision of consolidation computation, the non-Darcy flow equation described by the power function for the lower velocity of flow and the linear function for the higher velocity of flow is introduced to modify Terzaghis one-dimensional consolidation equation, and the presented equation is generalized to take account of the consolidation case due to the falling of the water head in the confined aquifer. The numerical analysis is performed by using the finite volume method. The effects of the parameters of non-Darcy flow on the consolidation process are investigated. The numerical results indicate that the non-Darcy flow delays the dissipation of pore water pressure in the aquitard; thereby the consolidation time of aquitard is longer than that of the solution based on Terzaghis theory.
aquitard consolidation non-Darcy flow finite volume method pore water pressure
Zhong-Yu LIU Jin-Chao YUE Li-Yun SUN
School of Civil Engineering, Zhengzhou University, China School of Water conservancy and Environment Engineering, Zhengzhou University, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
430-434
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）