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苏北盆地海安凹陷现今构造应力场特征及构造样式

王章青 李华东 杜二鹏

王章青, 李华东, 杜二鹏, 2012. 苏北盆地海安凹陷现今构造应力场特征及构造样式. 地质力学学报, 18 (1): 22-31.
引用本文: 王章青, 李华东, 杜二鹏, 2012. 苏北盆地海安凹陷现今构造应力场特征及构造样式. 地质力学学报, 18 (1): 22-31.
WANG Zhang-qing, LI Hua-dong, DU Er-peng, 2012. FEATURES OF PRESENT STRUCTURAL STRESS FIELD AND STRUCTURAL PATTERN IN HAIAN DEPRESSION, JIANGSU OILFIELD. Journal of Geomechanics, 18 (1): 22-31.
Citation: WANG Zhang-qing, LI Hua-dong, DU Er-peng, 2012. FEATURES OF PRESENT STRUCTURAL STRESS FIELD AND STRUCTURAL PATTERN IN HAIAN DEPRESSION, JIANGSU OILFIELD. Journal of Geomechanics, 18 (1): 22-31.

苏北盆地海安凹陷现今构造应力场特征及构造样式

基金项目: 

中国石化江苏石油勘探局科研项目 JS10004

详细信息
    作者简介:

    王章青(1969-), 男, 汉族, 安徽肥西人, 高级工程师, 主要从事石油地球物理勘探地震资料解释工作。E-mail:wangzq@joeco.com.cn

  • 中图分类号: P551;P552

FEATURES OF PRESENT STRUCTURAL STRESS FIELD AND STRUCTURAL PATTERN IN HAIAN DEPRESSION, JIANGSU OILFIELD

  • 摘要: 通过对苏北盆地海安凹陷T40反射层现今构造应力场、次级凹陷边界二级断裂和次级凹陷内三、四级断裂力学性质及其构造活动样式等分析研究认为:海安凹陷现今最大主应力方向为NE 70°左右;现今最大主应力为50 MPa左右,现今最小主应力为30 MPa左右。海安凹陷内次级凹陷边界二级断裂现今主要表现为张性或张扭性活动特征,张扭性活动方式既有顺扭也有反扭,并且同一断裂不同部位活动性质存在差异;海安凹陷内次级凹陷三、四级断裂现今也主要表现为张性或张扭性活动特征,张扭性活动方式既有顺扭也有反扭,个别表现为压性和压扭性活动,并且同一断裂不同部位活动性质存在差异。

     

  • 图  1  海安凹陷构造形态

    ①—海北断层;②—曲北断层;③—北陵断层带;④—新街断层;⑤—富安断层带;⑥—富东断层带;⑦—安丰断层带;⑧—曹灶断层带;⑨—梁南断层

    Figure  1.  Structural pattern of Haian depression

    图  2  海安凹陷地震T40反射层现今构造应力场数值模拟数学模型

    Figure  2.  Mathematical model for the numerical simulation of present structural stress field of seismic T40 reflection layer in Haian depression

    图  3  海安凹陷地震T40反射层二级断裂现今活动构造样式图

    Figure  3.  Present active structural pattern of the second-level faults of T40 reflection layer in Haian depression

    图  4  海安凹陷地震T40反射层三、四断裂现今活动构造样式图

    Figure  4.  Present active structural pattern of the third-and forth-level faults of T40 reflection layer in Haian depression

    表  1  海安凹陷T40反射层二级断裂力学性质及其构造活动样式

    Table  1.   Mechanical feature and structural pattern of the second-level faults of seismic T40 reflection layer in Haian depression

    表  2  海安凹陷T40反射层三、四级断裂力学性质及其构造活动样式

    Table  2.   Mechanical feature and structural pattern of the third-and forth-level faults of seismic T40 reflection layer in Haian depression

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  • 收稿日期:  2011-11-11
  • 刊出日期:  2012-03-28

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