| 延怀盆地现代构造应力场模拟与官厅水库大坝地震安全性初探 |
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| 引用本文： | 文彦君,郑文涛.延怀盆地现代构造应力场模拟与官厅水库大坝地震安全性初探[J].地震地质,2004,26(1):141-152. |
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| 作者姓名： | 文彦君 郑文涛 |
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| 作者单位： | 北京大学地质学系,北京,100871;北京大学地质学系,北京,100871 |
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| 摘 要： | 官厅水库所在的延怀盆地有多条活动断层分布 ,新构造运动强烈。官厅水库大坝安全与否事关首都安全。为此 ,文中采用有限元方法结合断层位移资料 ,模拟了延怀盆地的现代构造应力场 ;参照模拟的结果 ,结合前人的研究成果 ,对设定地震的烈度进行了拟合 ,讨论了设定地震对大坝的影响。对官厅水库大坝的地震安全性进行了评价。结果表明 :1)延怀盆地最大主压应力方向为N80°～ 85°E ;2 )可能的发震断层为方家冲 -营门矿段断层 ;3)考虑大坝坝址的工程地质条件、发震断层与大坝的空间位置关系、历史大地震对大坝的影响等因素 ,则大坝的地震危险性将有所提高
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| 关 键 词： | 官厅水库大坝 活断层 构造应力场模拟 烈度衰减方程 地震安全性 |
| 文章编号： | 0253-4967(2004)01-0141-12 |
| 修稿时间： | 2002年4月8日 |
SIMULATION OF MODERN TECTONIC STRESS FIELD IN YANQING-HUAILAI BASIN AND SEISMIC SAFETY ASSESSMENT OF THE GUANTING RESERVOIR DAM |
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| WEN Yan-jun,ZHENG,Wen-tao.SIMULATION OF MODERN TECTONIC STRESS FIELD IN YANQING-HUAILAI BASIN AND SEISMIC SAFETY ASSESSMENT OF THE GUANTING RESERVOIR DAM[J].Seismology and Geology,2004,26(1):141-152. |
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| Authors: | WEN Yan-jun ZHENG Wen-tao |
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| Abstract: | The research of regional seismic risk is fairly mature at present. Recently, a lot of papers concerning the simulation of the tectonic stress field of certain earthquake areas have been published. And by combining the obtained results with the other data, the seismic risk of the areas has been discussed and the risk areas of strong earthquake have been determined. In Yanhuai Basin where the Guanting reservoir is located, exist many active faults. The neotectonic movement in the basin has been very intens |
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| Keywords: | Guanting reservoir dam active faults stress field simulation intensity attenuation equation seismic safety |
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