| 秦巴地区地质灾害的分布规律与成因 |
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| 引用本文： | 韩金良,吴树仁,李东林,谭成轩,张永双,孙炜峰,乔子江.秦巴地区地质灾害的分布规律与成因[J].地质科技情报,2007,26(1):101-108. |
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| 作者姓名： | 韩金良 吴树仁 李东林 谭成轩 张永双 孙炜峰 乔子江 |
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| 作者单位： | 中国地质科学院地质力学研究所,北京,100081 |
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| 基金项目： | 国家自然科学基金，中国地质调查局地质调查项目，科技部社会公益研究项目 |
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| 摘 要： | 秦巴地区是中国地质灾害的高发区和重灾区之一,其地质灾害的分布具有地域上的分异性:渭河盆地黄土滑坡较多;秦巴山区以小型浅层堆积层滑坡为主;汉江河谷分布一些膨胀土滑坡和岩质滑坡;大巴山以南中厚层岩质滑坡较多.秦巴地区的地质灾害一般沿大的断裂带、交通线、大的河流分布,形成纵横东西南北的地质灾害链.秦巴地区地质灾害的发生受降雨、地形地貌、岩性与结构面、人类工程活动等因素的影响,是内动力地质作用和外动力地质作用相互作用、转化的结果,也是大气圈、水圈、生物圈和岩石圈耦合的反映.
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| 关 键 词： | 秦巴地区 地质灾害 分布规律 成因 |
| 文章编号： | 1000-7849(2007)01-0101-08 |
| 修稿时间： | 2006-04-02 |
Distribution Regularities and Contributing Factor of Geological Hazards in Qinling-Daba Mountains |
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| HAN Jin-liang,WU Shu-ren,LI Dong-lin,TAN Cheng-xuan,ZHANG Yongs-huang,SUN Wei-feng,QIAO Zi-jiang.Distribution Regularities and Contributing Factor of Geological Hazards in Qinling-Daba Mountains[J].Geological Science and Technology Information,2007,26(1):101-108. |
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| Authors: | HAN Jin-liang WU Shu-ren LI Dong-lin TAN Cheng-xuan ZHANG Yongs-huang SUN Wei-feng QIAO Zi-jiang |
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| Institution: | Institute of Geomechanics, Chinese Academy of Geological Science, Beijing 100081, China |
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| Abstract: | Qinling-Daba region is an area where geological hazards occur frequently.The types of geological hazards are distinct in different areas: loess landslides are primary in the Weihe Basin;the main type of landslide in Qinling-Daba Mountains is small scaled landslide composed of shallow accumulation layer.Expandsible soil landslides and rock landslides are widely found in Hanjiang river valley,while medium-thick layer rock landslides dominate in Mesozoic red layers distributed in regions south to Daba Mountains.Geological hazards are distributed along main faults,rivers,highways and railways,forming geological hazard chains crossing north-south direction and west-east direction.These geological hazards are characteried by hazard assemblages or zones and chain distribution.They are related in origin,in time and in space.They are affected by rainfall,landform,the type of rock,structural planes,active faults and human activities,and are the results of transferring between internal dynamic function and external dynamic function,also the reflection of coupling among atmosphere circle,water circle,biology circle and lithosphere. |
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| Keywords: | Qinling-Daba Mountains geological hazard distribution regularity contributing factor |
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