%0 Journal Article
%A FENG Wen-kai
%A WU Zhuo-lin
%A LIN Bu-lei
%A ZHU Quan-wei
%A ZHOU Yu-long
%T A Method of Initializing FLAC<sup>3D</sup> Saturated-unsaturated Seepage Field
%D 2020
%R 10.11988/ckyyb.20190234
%J Journal of Changjiang River Scientific Research Institute
%P 109-114
%V 37
%N 7
%X The establishment of initial seepage field close to the real state is an important prerequisite for the correct analysis of slope rainfall infiltration. In view that methods of initializing saturated-unsaturated seepage field in FLAC<sup>3D</sup> are rarely reported, in this paper we put forward and introduce in detail the setup method of initializing saturated-unsaturated seepage field. According to the five distribution forms of matric suction, two initialization methods are proposed corresponding to the linear and non-linear distribution laws of matric suction. For the linear distribution of matric suction, MIDAS modeling and FLAC<sup>3D</sup> built-in FISH language are employed to initialize the seepage field. For non-linear distribution, since it is difficult to represent the complex geometry of groundwater level surface by using function, the groundwater level is simplified into a plane for the initial setting of seepage field by using FISH programming language. Comparison with conventional initialization method demonstrated that the initial seepage field has a great influence on the final calculation result of slope rainfall infiltration. When the initial seepage field is closer to the real state, the calculation accuracy is higher.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20190234