Application of finite difference technique for solving consolidation problems of radial drainage case in air Tawar, Padang.

Finite difference technique has become a numerical tool that makes complex become easier for engineers to problems. The complex problems are difficult to solve in the normal way. In this paper, the application of a finite difference technique is used to solve the consolidation problem in the case of radial drainage to determining the reduction in pore water stress. Usually the application is on soils that are near to impermeable, but in this paper it is applied to semi-permeable soils that are silty sand and fine sand. In semi-permeable soils, increased pore water pressure is very shorter. In this study is the time of radial drain is discussed. The data used is taken from Air Tawar, Padang. The results shows that the 90% of increased 100unit pore pressure can be completed within about 126 seconds. The results also indicates this method can be used to solve the problem of a sudden increase in pore water in the soil. [ABSTRACT FROM AUTHOR]