| 大型土石混合体滑坡空间效应与稳定性研究 |
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| 引用本文： | 徐文杰.大型土石混合体滑坡空间效应与稳定性研究[J].岩土力学,2009,30(Z2):328-333. |
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| 作者姓名： | 徐文杰 |
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| 作者单位： | 中国水利水电科学研究院,岩土工程研究所,北京,100044 |
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| 基金项目： | 中国科学院地质与地球物理研究所工程地质力学重点实验室开放课题，地质灾害防治与地质环境保护国家重点实验室开放基金资助项目，第44批中国博士后基金资助 |
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| 摘 要： | 土石混合体滑坡是滑坡地质灾害中具有代表性的一类,由于该类滑坡在自然界中分布广泛并且较其他类型的滑坡更为复杂,常常给人类带来巨大的灾难.位于湖北省巴东县长江北岸的周家湾滑坡就属于这一类滑坡,该滑坡是著名的黄蜡石古滑坡群的重要组成部分.周家湾滑坡变形开始于20世纪80年代中期,滑坡导致地面出现张拉裂缝,近几年来变形逐步加剧,目前该滑坡处于蠕滑阶段.周家湾滑坡前缘为石榴树包滑坡的后壁,后缘为响石镐滑坡的坡脚,因此,周家湾滑坡的稳定性对响石镐滑坡及石榴树包滑坡存在着潜在的威胁.运用地质分析、工程地质力学分析等手段,剖析了周家湾滑坡体的地质环境、形态、结构等空间要素及其发育模式,并建立了相应的三维地质体概念模型.通过利用数值模拟技术,对滑坡体的稳定性、变形失稳机制进行了分析研究.
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| 关 键 词： | 土石混合体滑坡(S-RML) 稳定性分析 强度折减法 空间效应 |
| 收稿时间： | 2009-07-25 |
Study of spatial effect and stability of large scale soil-rock mixture landslide |
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| XU Wen-Jie.Study of spatial effect and stability of large scale soil-rock mixture landslide[J].Rock and Soil Mechanics,2009,30(Z2):328-333. |
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| Authors: | XU Wen-Jie |
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| Institution: | Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100044, China |
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| Abstract: | Soil-rock mixture landslide is a representational geological disaster of landslide. This landslide is broadly distributed in nature, and it is more complex than other landslides, it often brings huge calamity to human. Zhoujiawan landslide which is located on the north bank of Yangtze River, Country Badong, Hubei Province, China, belongs to this type of landslide, It is a very important part of the Huanglashi ancient landslide group. The obvious deformation of the landslide began in the middle age of 1980s, and at that time the deformation of the landslide induced many cracks on the ground. Now the deformation of the landslide is pricking up, and it is on the creep stage. The existence of Zhoujiawan landslide is a potential threat because there is a Shiliushubao landslide at the front of Zhoujiawan landslide. The special factors like geological surrounding, shape, structure and evolvement of the landslide are analyzed by means of geological analysis and engineering geomechanics. The three-dimesional geological model is also established. The stability of the landslide and the failure mechanism are studied through the numerical simulation technique. |
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| Keywords: | soil-rock mixture landslide(S-RML) stability analysis strength reduction method spatial effect |
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