| 420芦山地震峡口滑坡监测数据分析 |
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| 引用本文： | 黄鑫, 杨卓, 徐锐, 孙芳, 刘天霸, 张宁, 牛晶蕊. 2014: 420芦山地震峡口滑坡监测数据分析. 工程地质学报, 22(s1): 419-425. DOI: 10.13544/j.cnki.jeg.2014.s1.070 |
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| 作者姓名： | 黄鑫 杨卓 徐锐 孙芳 刘天霸 张宁 牛晶蕊 |
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| 作者单位： | 1.中国航天科工集团航天科工惯性技术有限公司 北京 100070;;2.中国科学院地质与地球物理研究所, 中国科学院页岩气与地质工程重点实验室 北京 100029 |
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| 基金项目： | 国家科技重大专项课题（2010ZX03006-007），国家973项目（2011CB707303），国家自然科学基金项目（41172270）资助 |
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| 摘 要： | 基于420芦山地震前后获取的峡口滑坡监测数据，对地震发生时峡口滑坡地下水位、深部位移及地表位移变化情况进行了分析，结果表明：（1）芦山地震前，峡口滑坡地下水位出现持续异常上升，涨幅在1m以上， 4月20日即芦山地震发生当日，地下水位达到峰值，震后，地下水位开始迅速下降，降幅在1.5m左右； （2）芦山地震发生当天，受芦山地震的影响，滑坡深部发生了一次大于1mm的位移，其后恢复基本稳定的状态。利用R/S分析方法对峡口滑坡稳定性进行分析，受芦山地震影响， 4月份峡口滑坡的Hurst指数明显有所下降，说明滑坡的稳定性有所降低。但总体上滑坡的Hurst指数均大于0.5，说明滑坡一直处于稳定状态。
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| 关 键 词： | 芦山地震 峡口滑坡 监测 R/S分析方法 Hurst指数 |
| 收稿时间： | 2014-03-25 |
| 修稿时间： | 2014-07-05 |
MONITORING RESULT ANALYSIS OF XIAKOU SLOPE RESPONSE OF LUSHAN EARTHQUAKE OF SICHUAN,CHINA |
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| Huang Xin, Yang Zhuo, Xu Rui, Sun Fang, Liu Tianba, Zhang Ning, Niu Jingrui. 2014: MONITORING RESULT ANALYSIS OF XIAKOU SLOPE RESPONSE OF LUSHAN EARTHQUAKE OF SICHUAN,CHINA. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 419-425. DOI: 10.13544/j.cnki.jeg.2014.s1.070 |
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| Authors: | Huang Xin Yang Zhuo Xu Rui Sun Fang Liu Tianba Zhang Ning Niu Jingrui |
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| Affiliation: | 1.China Aerospace Science & Industry COPR, ASIT CO., LTD, Beijing 100070;;2.Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029 |
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| Abstract: | The changes of groundwater level, deep displacement and surface displacement were analyzed, based on the monitoring data obtained from Xiakou slope before and after the Lushan earthquake. The results show that：(1)the groundwater level rised abnormal before the earthquake, with the range of more than 1m. It reached the peak on the earthquake day. After the earthquake, it began to rapidly decline, at about 1.5m; (2)Landslide occurred a deep displacement of more than 1mm caused by the earthquake, then restore basic steady state. Landslide stability was analyzed by using the R/S analysis method. The Hurst index was significantly decreased in the April affected by the earthquake, indicating the stability of landslide decreased. But the Hurst index was greater than 0.5,indicating that the landslide was stable. |
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| Keywords: | Lushan earthquake Xiakou slope Monitoring R/S method The hurst index |
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