三角剪切模型及其在川东大池干构造解译中的应用  

Trishear model and its application to interpretation of Dachigan structure in the eastern Sichuan Province

作　　者：李军[1] 尹宏伟[1] 张洁[1] 刘玉萍[1] 徐士进[1] 

机构地区：[1]南京大学地球科学系

出　　处：《石油学报》2007年第4期68-72,共5页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.40402019)资助

摘　　要：介绍了三角剪切模型的原理与方法,并利用该模型对川东大池干构造地震剖面进行了构造解译及应变分析。模型的正演模拟结果与地震资料中所观察到的构造几何形态基本相符,表明大池干构造是典型的三角剪切构造。利用模拟结果对该地区断层相关褶皱体系的应变和断层滑动量的检验表明,该模型能够准确地反映大池干构造的地下特征,最大限度地解释已知地质信息,有助于对该地区的构造模式和构造演化进行深入研究。The principle and method for the trishear model were introduced. The trishear model was applied to the structural interpretation and strain analysis of Dachigan structure in the eastern Sichuan Province. The results obtained from the forward modeling are in good accordance with the structural geometry observed from the seismic profile, which show that Dachigan structure is a typical trishear structure, The results of simulation verified the strain and the slip of the fault in the fault-related fold. This model can describe the underground features of Dachigan structure and is favorable to analyze the structure pattern and structure evolution in this region.

关 键 词：大池干构造 断层相关褶皱 地震剖面 构造解译 三角剪切模型 应变分析 

分 类 号：TE111.2[石油与天然气工程—油气勘探]