CAJ | 학술논문

为研究降雨入渗条件下三维边坡渗流场的变化过程，在全面研究FLAC3D软件渗流分析模块功能及算法的基础上，通过编写FISH函数完善了FLAC3D软件的非饱和渗流计算功能。基于降雨入渗机制的分析，编写了降雨入渗及停雨出渗边界的FISH函数，实现边坡三维降雨入渗过程的模拟。通过降雨条件下算例边坡的饱和非饱和渗流场变化过程的数值计算，研究了降雨入渗引起的边坡暂态饱和区变化过程，并与已有研究成果进行对比分析，从而验证了自编FISH函数实现边坡三维非饱和渗流计算结果的正确性。研究成果表明，文中提出的边坡三维非饱和降雨入渗分析是可行的，同时也为三维边坡非饱和渗流场的研究提供了一条有益的途径。
위연구강우입삼조건하삼유변파삼류장적변화과정，재전면연구FLAC3D연건삼류분석모괴공능급산법적기출상，통과편사FISH함수완선료FLAC3D연건적비포화삼류계산공능。기우강우입삼궤제적분석，편사료강우입삼급정우출삼변계적FISH함수，실현변파삼유강우입삼과정적모의。통과강우조건하산례변파적포화비포화삼류장변화과정적수치계산，연구료강우입삼인기적변파잠태포화구변화과정，병여이유연구성과진행대비분석，종이험증료자편FISH함수실현변파삼유비포화삼류계산결과적정학성。연구성과표명，문중제출적변파삼유비포화강우입삼분석시가행적，동시야위삼유변파비포화삼류장적연구제공료일조유익적도경。
To explore the variation process of seepage field of a three dimensions slope due to rainfall infiltration, routines for improvement of the capability of unsaturated seepage calculation of FLAC3D software were programmed by using FISH language after the analysis of unsaturated seepage module and seepage calculation algorithm used in FLAC3D platform. Based on the analysis of infiltration mechanism of rainfall, some FISH routines for simulation of rainfall infiltration and oozing of pore water in the slope after raining stop were programmed. The variation process of saturated and unsaturated seepage field of an engineering slope under the rainfall condition was simulated by employing FLAC3D software and the developed routines. The variation law of transient saturated area in the slope due to rainfall infiltration was explored and compared to the results in references cited in the paper. The distribution of transient saturated area in the slope obtained by calculation is same as the results presented in the cited references. It shows that the simulation of rainfall infiltration and unsaturated seepage analysis could be fulfilled corrected by employing FLAC3D platform with the relevant routines developed by users. The proposed method for the calculation of unsaturated seepage process provides a significance way for the simulation of seepage field of three-dimensional slope.