| 数值模拟在黑山峡两坝址构造稳定性评价中的应用 |
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| 引用本文： | 王爱国,杨斌,马巍,周俊喜,张向红.数值模拟在黑山峡两坝址构造稳定性评价中的应用[J].地震研究,2004,27(4):350-356. |
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| 作者姓名： | 王爱国 杨斌 马巍 周俊喜 张向红 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州,730000;中国地震局兰州地震研究所,兰州,730000;中国地震局兰州地震研究所,兰州,730000;中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州,730000 |
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| 基金项目： | “973”国家重点基础研究发展规划项目 (2 0 0 2CB412 70 4)，中国科学院知识创新工程重大项目 (KZCX1-SW -0 4)，国家自然科学基金重大项目 (90 10 2 0 0 6)联合资助 . |
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| 摘 要： | 通过对黑山峡进行区域应力场三维有限元模拟，利用岩石破裂危险度KR及断层滑动危险系数KF两个判别指标，确定出中卫一同心活动断裂带弧形顶点部位红谷梁—石圈区段及海原活动断裂带上西华山以东区段两个未来地震危险区，震源均处于上、中地壳交接带，即深15km左右，可能发生的最大地震震级分别为Ms7．3级及Ms8．2级。地震对两坝址的影响表明，大柳树坝址所受影响烈度可达9度，且位于极震区内，构造稳定性差；小观音坝址所受影响烈度约为7度，构造稳定性相对较好。
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| 关 键 词： | 数值模拟 构造稳定性 地震危险性 烈度评估 黑山峡 |
| 文章编号： | 1000-0666(2004)04-0350-07 |
| 修稿时间： | 2004年2月3日 |
The Application of Numerical Simulation in Evaluation of Tectonic Stability of Dam-site in Heishan Gorge |
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| WANG Ai-guo , YANG Bin MA Wei ZHOU Jun-xi ZHANG Xiang-hong.The Application of Numerical Simulation in Evaluation of Tectonic Stability of Dam-site in Heishan Gorge[J].Journal of Seismological Research,2004,27(4):350-356. |
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| Authors: | WANG Ai-guo YANG Bin MA Wei ZHOU Jun-xi ZHANG Xiang-hong |
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| Institution: | WANG Ai-guo 1,2 YANG Bin2 MA Wei1 ZHOU Jun-xi2 ZHANG Xiang-hong2 |
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| Abstract: | By 3-D finite element simulation of the zone tectonic stress in Heishan Gorge, two future seismic dangerous areas were determined using rock rupture risk coefficient (KR) and fault gliding risk coefficient (KF) as criteria, which were located in the arc apex from Honggulian to Shijuan in Zhongwei-Tongxin active faults and the part east to Xihua mountain in Haiyuan active fault with epicenter depth of about 15Km and magnitude of M S7.3 and M S8.2 individually. The influence of the potential earthquake to the two dam-sites in Heishan Gorge shows that the Daliushu dam-site's influenced intensity can get to IX and the dam-site is in the meizoseismal area, which is unstable in tectonics, and the Xiaoguanyin dam-site's influenced intensity is about 7, which is comparatively stable in tectonics. |
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| Keywords: | numerical simulation tectonic stability earthquake risk intensity evaluation Heishan Gorge |
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