| 鄂西清江隔河岩水库茅坪滑坡蠕滑变形及其稳定性 |
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| 引用本文： | 杨为民,徐瑞春,吴树仁,谭振轩,石菊松.鄂西清江隔河岩水库茅坪滑坡蠕滑变形及其稳定性[J].地质通报,2007,26(3):312-320. |
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| 作者姓名： | 杨为民 徐瑞春 吴树仁 谭振轩 石菊松 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所,北京,100081
2. 长江水利资源委员会综合勘测局,湖北,宜昌,443002 |
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| 基金项目： | 国家自然科学基金项目（编号：40472153）及科研院所社会公益研究专项基金（编号：2004DEI100260）资助. |
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| 摘 要： | 茅坪滑坡是清江隔河岩库区一个大型的基岩古滑坡体。自1993年4月隔河岩水库蓄水以来,滑坡体变形日趋明显,表现为整体蠕滑的特征。根据该滑坡12年的变形监测资料,分析了滑坡的蠕滑变形特征及其变化趋势,认为茅坪滑坡变形具有累进性破坏的特点,目前处于加速蠕变阶段。稳定计算结果也表明,滑坡体处于一种潜在临界不稳定状态。若遇强降雨、库水位骤降、岩崩或地震等触发因素,茅坪滑坡有可能整体失稳下滑。
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| 关 键 词： | 鄂西 隔河岩水库 茅坪滑坡 蠕滑变形 稳定性 降雨 蓄水 |
| 文章编号： | 1671-2552（2007）03-0312-09 |
| 收稿时间： | 1/4/2007 12:00:00 AM |
| 修稿时间： | 2007-01-24 |
Creeping deformation of the Maoping landslide and its stability in the Geheyan reservoir on the Qingjiang River, western Hubei, China |
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| YANG Wei-min,XU Rui-chun,WU Shu-ren,TAN Zhen-xuan,SHI Ju-song . Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing,China . Bureau of Investigation & Survey,Changjiang Water Resources Commission,Yichang,Hubei,China.Creeping deformation of the Maoping landslide and its stability in the Geheyan reservoir on the Qingjiang River, western Hubei, China[J].Geologcal Bulletin OF China,2007,26(3):312-320. |
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| Authors: | YANG Wei-min XU Rui-chun WU Shu-ren TAN Zhen-xuan SHI Ju-song Institute of Geomechanics Chinese Academy of Geological Sciences Beijing China Bureau of Investigation & Survey Changjiang Water Resources Commission Yichang Hubei China |
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| Institution: | YANG Wei-min,XU Rui-chun,WU Shu-ren,TAN Zhen-xuan,SHI Ju-song . Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing,China . Bureau of Investigation & Survey,Changjiang Water Resources Commission,Yichang,Hubei,China |
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| Abstract: | The Maoping landslide is a large and old landslide of the bed rock in the Geheyan reservoir area of the Qingjiang River. Since the reservoir was impounded in April 1993, the deformation of the landslide is conspicuous progressively and shows the characteristics of holistic creeping. According to the deformation monitoring data over 12 years, the authors analyze the creeping properties and variation trend of the landslide and think that the deformation of the Maoping landslide has the feature of progressive failure and is in the stage of accelerated creeping at present. The stability calculation also indicates that the landslide is in a latent critical unstable state. It is possible that the landslide might lose its stability and slide down en masse if there occur trigger factors such as heavy rains, abrupt lowering of the reservoir water level, avalanches and earthquakes. |
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| Keywords: | western Hubei Geheyan reservoir Maoping landslide creeping deformation stability rainfall impounding |
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