[1]段云江,黄少英,李维波,等.用离散元数值模拟法研究克拉苏构造带盐构造变形机理[J].新疆石油地质,2017,(04):414.[doi:10.7657/XJPG20170406]
 DUAN Yunjiang,HUANG Shaoying,LI Weibo,et al.Using Discrete Element Numerical Simulation Method to Study Salt Tectonic Deformation Mechanism of Kelasu Structural Belt[J].Xinjiang Petroleum Geology,2017,(04):414.[doi:10.7657/XJPG20170406]
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用离散元数值模拟法研究克拉苏构造带盐构造变形机理()
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《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

卷:
期数:
2017年04期
页码:
414
栏目:
出版日期:
2017-08-01

文章信息/Info

Title:
Using Discrete Element Numerical Simulation Method to Study Salt Tectonic Deformation Mechanism of Kelasu Structural Belt
文章编号:
1001-3873(2017)04-0414-06
作者:
段云江1黄少英1李维波2张慧芳1马小丹1廖斐然1
(1.中国石油 塔里木油田分公司 勘探开发研究院,新疆 库尔勒 841000;2.北京大学 地球与空间科学学院,北京 100871)
Author(s):
DUAN Yunjiang1 HUANG Shaoying1 LI Weibo2 ZHANG Huifang1 MA Xiaodan1 LIAO Feiran1
(1.Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China; 2.School of Earth and Space Sciences, Peking University, Beijing 100871, China)
关键词:
塔里木盆地库车坳陷克拉苏构造带盐构造离散元数值模拟构造变形机理
Keywords:
Tarim basin Kuqa depression Kelasu structural belt salt structure discrete element numerical simulation tectonic deformation mechanism
分类号:
P551
DOI:
10.7657/XJPG20170406
文献标志码:
A
摘要:
为研究库车坳陷克拉苏构造带盐构造挤压变形演化过程及其主控因素,采用离散元数值模拟方法,模拟了阿瓦特段、大北段和克深段3条主干地震剖面的盐构造变形演化过程。离散元数值模拟结果表明,挤压背景下盐岩层表现为塑性变形特征,具有较强的流动性,盐上层、盐岩层和盐下层为整体挤压、分层变形的构造特征;盐下层发育一系列由北向南的冲断构造,盐上层发育断层传播褶皱和滑脱变形构造;先存断裂主要控制盐下层构造变形和应力的传播范围;先存盐底辟主要影响盐上层构造的隆升范围,盐岩展布形态和基底古隆起主要影响盐上层构造变形。研究结果揭示了克拉苏构造带盐构造的动力学演化过程,有利于提高对盐构造变形机理和演化过程的认识。
Abstract:
In order to research the tectonic compressional deformation and its main controlling factors of salt structures in Kelasu structural belt of Kuqa depression, the paper simulates the salt tectonic deformation process of the 3 major seismic sections of Awat, Dabei and Keshen segments by using discrete element numerical simulation method. The simulation results show that the salt bed exhibits plastic deformation under the compressional setting and has relatively strong fluidity. Post-salt, salt and pre-salt beds show some structural characteristics of overall compression and layered deformation. A series of NS trending thrust structures are developed in pre-salt beds, and fault propagating folds and detached deformation structures are developed in post-salt beds. Pre-existing fractures mainly control pre-salt tectonic deformation and stress propagation range, pre-existing salt diapirs mainly influence the tectonic uplifting range of post-salt beds; salt rock distribution and palaeohigh of basement mainly impact the tectonic deformation of post-salt beds. The study results reveal the dynamic evolution process of salt structures in Kelasu structural belt, which will benefit to improve the understandings on salt tectonic deformation mechanism and its evolution process.

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更新日期/Last Update: 2017-08-08