| 西藏昌都镇地质灾害发育特征及防治对策 |
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| 引用本文： | 汤明高,许强,马和平,成民,杜先兴.西藏昌都镇地质灾害发育特征及防治对策[J].中国地质灾害与防治学报,2006,17(4):11-16. |
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| 作者姓名： | 汤明高 许强 马和平 成民 杜先兴 |
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| 作者单位： | 1. 成都理工大学,环境与土木工程学院,四川,成都,610059
2. 西藏自治区地质环境与灾害防治科学研究所,西藏,拉萨,850000 |
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| 基金项目： | 霍英东高校青年教师基金(91020)，高等学校优秀青年教师教学科研奖励计划资助项目 |
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| 摘 要： | 昌都镇位于澜沧江上游“三河一江”地带(即昂曲、扎曲、色曲、澜沧江)。地质构造条件复杂,气候较恶劣,昼夜温差大,物理风化强烈,植被稀疏,地质灾害发育。该区是藏东的政治、经济、文化中心。随着地区的经济发展,其城镇建设与地质灾害之间的矛盾日益突出。调查研究显示昌都镇发育地质灾害33处,其中崩塌16处,占灾害点总数48.5%,主要发育于路堑边坡和河流下切侧蚀形成的自然边坡;滑坡13处,占灾害点总数的39.4%,且90%为土质滑坡,多与人类工程活动有关;泥石流4处,占灾害点总数的12.1%,以中小型为主。文章总结了昌都镇崩塌、滑坡和泥石流灾害的发育分布特征,地质灾害与地层岩性、空间位置和人类工程活动等之间的关系,以及对昌都城镇建设和发展的影响。结合调查分析提出了昌都镇地质灾害防治的总体策略———治灾、设防、治水、治坡、生态建设和加强环保意识。
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| 关 键 词： | 地质灾害 发育特征 影响 防治对策 西藏昌都 |
| 文章编号： | 1003-8035（2006）04-0011-06 |
| 收稿时间： | 2005-12-20 |
| 修稿时间： | 2006-06-12 |
Characteristic and countermeasures for geological hazards in Changdu Town, Tibet |
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| TANG Ming-gao,XU Qiang,MA He-ping,CHENG Min,DU Xian-xing.Characteristic and countermeasures for geological hazards in Changdu Town, Tibet[J].The Chinese Journal of Geological Hazard and Control,2006,17(4):11-16. |
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| Authors: | TANG Ming-gao XU Qiang MA He-ping CHENG Min DU Xian-xing |
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| Institution: | 1. College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China; 2. Institute of Geological Environment and Hazard Prevention in Tibet, Lasa 850000, China |
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| Abstract: | Changdu Town is an important town in the east of Tibet.It is the centre of policy,economy and culture in changdu District.With Changdus economy progress,the contradiction between town construction and geological hazard is becoming sharper.Changdu Town lies in the upriver of Lancangjiang Rive,and three rivers pass through it,which are Angqu,Zhaqu and Sequ Rivers.For complicated geologic structure,bad climate,great difference in temperature,strong physical weathering and lack of vegetation,there are many geological hazards.The investigation shows that there are 33 geological hazards,including 16 collapses,occupying 48.5%,lying in the slope of roadside,riverside and foreland of high nature slope;13 landslides,occupying 39.4%,90% of which are soil slopes and majority of them relate to human engineering;and 4 debris flows,occupying 12.1%,belonging to little or middle type debris flow.Based on a lot of investigation,the distribution characteristic of geological hazards and the relationships between them and stratum,rock character,space position,human activity and the influence on city construction are analyzed. At last,the countermeasures to geological hazards are put forward,including treating,proofing,water controlling,proofing soil and water loss,ecology construction and strengthening environmental protect consciousness.The conclusion is drawn that fully knowing the distribution characteristic of hazards and executing systemic countermeasures are the base of guaranteeing human life and property,promoting town construction and economy progress. |
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| Keywords: | geological hazard distribution characteristic influence countermeasures Changdu Town Tibet |
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