均质多岩层褶皱的大变形数值模拟  

LARGE DEFORMATION NUMERICAL MODELING OF HOMOGENOUS MUTI LAYERS FOLDS

作　　者：李玉林[1] 杨锡禄[1] 陈至达[2] 杨成永[3] 

机构地区：[1]煤炭科学研究总院西安分院 [2]中国矿业大学 [3]北方交通大学

出　　处：《煤田地质与勘探》1999年第1期4-6,共3页Coal Geology & Exploration

基　　金：煤炭科学基金

摘　　要：利用杆件大变形力学理论，对均质多岩层在力作用下褶皱的形成过程及结果进行了数值模拟，结果表明当岩层受力两端边界条件对称时，产生的褶皱是对称的；当边界条件不对称时，产生的褶皱是不对称的，揭示了对称与不对称褶皱产生的力学成因，同时也表明，大变形力学理论在地质构造模拟方面有着良好的应用前景。On the basis of beam large deformation theory,the paper promotes the large deformation numerical modeling of homogenous muti layers folding process and results.The results show that the fold is symmetrical when the boundary of two side pushing is symmetrical;the fold is non symmetrical when it is non symmetrical.It brings to light the mechanical reason of folds.The results also show that large deformation mechanics theory has a bright future in the modeling research of tectonics.

关 键 词：褶皱 变形 数值模拟 多岩层 

分 类 号：P542.2[天文地球—构造地质学] P551[天文地球—地质学]