下扬子地区晚印支-早燕山期古构造应力场数值模拟
宫龙;任升莲;王道轩;刘乐;黄鹏;李加好
【期刊名称】《合肥工业大学学报（自然科学版）》 【年(卷),期】2013(000)011
【摘要】The tectonic stress field of lower Yangtze region in early Yanshanian period was simulated through the finite element analog under ANSYS system ,and an automatic and quick establishment of analog was realized by using C# and GDAL/ORG .The result indicates that the high value area of the maximum principal stress distributes in the top of Dabie Mountains outstanding body and Tan-Lu fault zone ,and the secondary maximum principal stress distributes mostly in both sides of the fault and shows regularity of high stress alternating with comparatively low stress ,which is nearly parallel with the fold axis in this region .The spread of volcanic downfaulted basins in the middle and lower reaches of the Yangtze River is in accordance with the distribution of isoline nephogram of the secondary maxi-mum principal stress .The high value area of shear stress is concentrated along the fault belts and places where the occurrence of the fault changed ,such as Tan-Lu fault zone ,Guishan-Meishan fault zone ,Wulian fault zone and the sections w here the occurrences of Jiangshao fault zone and Jiangnan fault zone changed .The displacement field shows that the lower Yangtze plate in early Yanshanian pe-riod had a tendency of
下扬子地区晚印支-早燕山期古构造应力场数值模拟
