| 丹江口水库区构造应力场的数值模拟 |
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| 引用本文： | 刘素梅,徐礼华. 丹江口水库区构造应力场的数值模拟[J]. 岩石力学与工程学报, 2004, 23(23): 4017-4021 |
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| 作者姓名： | 刘素梅 徐礼华 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院,武汉,430070;武汉大学土建学院,武汉,430072
2. 武汉大学土建学院,武汉,430072 |
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| 基金项目： | 教育部高校骨干教师资助计划项目(1500096)资助课题。 |
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| 摘 要： | 根据丹江口水库区的地震地质构造建立库区的有限元模型，反演丹江口水库区蓄水前的构造应力场和地应力场，并分析其分布特点以及库区塑性应变特点。研究成果为丹江口水库提高水位后诱发地震的预测与安全评价提供参考。
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| 关 键 词： | 岩石力学 丹江口水库 构造应力场 地应力场 有限元 |
| 文章编号： | 1000-6915(2004)23-4017-05 |
| 收稿时间： | 2004-04-02 |
| 修稿时间： | 2004-05-20 |
NUMERICAL STIMULATION OF TECTONIC STRESS FIELD AT DANJIANGKOU RESERVOIR AREA |
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| Liu Sumei,,Xu Lihua. NUMERICAL STIMULATION OF TECTONIC STRESS FIELD AT DANJIANGKOU RESERVOIR AREA[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(23): 4017-4021 |
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| Authors: | Liu Sumei Xu Lihua |
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| Affiliation: | Liu Sumei1,2,Xu Lihua2 |
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| Abstract: | Finite element model is established according to seismogeological structure of Danjiangkou reservoir area. Then the tectonic stress field and in-situ stress field are calculated by using the software of ANSYS before the reservoir impoundment,and the distribution characteristics of stress field and plastic strain feature in reservoir area are analyzed. The results show that the horizontal deformation is dominant in the reservoir area,with the trends of NWW compression and NEE tension. Faults affect seriously the distribution of stress,and stress concentration occurs in the two sides of faults. Earthquakes easily occur in the places where the horizontal principal tensile stress is bigger or the plastic strain is concentrated. The research achievement can be reference of the induced-earthquake forecast and safety evaluation after the water level of Danjiangkou reservoir rises. |
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| Keywords: | rock mechanics Danjiangkou reservoir tectonic stress field in-situ stress field finite element |
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