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

doi:10.7623/syxb200704013

Editorial office of ACTA PETROLEI SINICA ›› 2007, Vol. 28 ›› Issue (4): 68-72.DOI: 10.7623/syxb200704013

• Petroleum Exploration • Previous Articles Next Articles

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

Li Jun^1,2, Yin Hongwei¹, Zhang Jie¹, Liu Yuping¹, Xu Shijin¹

1. Department of Earth Sciences, Nanjing University, Nanjing 210093, China;
2. Fourth Survey and Design Institute, China Railway Ministry, Wuhan 430063, China

Received:2006-04-28 Revised:2006-06-20 Online:2007-07-25 Published:2010-05-21

三角剪切模型及其在川东大池干构造解译中的应用

李军^1,2, 尹宏伟¹, 张洁¹, 刘玉萍¹, 徐士进¹

1. 南京大学地球科学系江苏南京210093;
2. 铁道部第四勘察设计院湖北武汉430063

作者简介:李军,男,1981年4月生,2006年获南京大学硕士学位,现为铁道部第四勘察设计院助理工程师,主要从事地质构造模拟与解译、地质工程勘探与设计等研究.E-mail:cced522@163.com
基金资助:
国家自然科学基金项目(No.40402019)资助

Abstract

Abstract: 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.

Key words: Dachigan structure, fault-related fold, seismic profile, structural interpretation, trishear model, strain analysis

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。

CLC Number:

TE111.2

Li Jun, Yin Hongwei, Zhang Jie, Liu Yuping, Xu Shijin. Trishear model and its application to interpretation of Dachigan structure in the eastern Sichuan Province[J]. Editorial office of ACTA PETROLEI SINICA, 2007, 28(4): 68-72.

李军, 尹宏伟, 张洁, 刘玉萍, 徐士进. 三角剪切模型及其在川东大池干构造解译中的应用[J]. 石油学报, 2007, 28(4): 68-72.

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

三角剪切模型及其在川东大池干构造解译中的应用

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