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四川省汶川地震极重灾区次生山地灾害分布规律与发育趋势

期刊名称：中国地质灾害与防治学报
时间：0
页码：14-21
分类：P642[天文地球—工程地质学;天文地球—地质矿产勘探;天文地球—地质学]
作者机构：[1]湖南科技大学建筑与城乡规划学院,湖南湘潭411201, [2]中国科学院成都山地灾害与环境研究所,四川成都610041, [3]四川大学水利水电学院,四川成都610642, [4]交通运输部科学研究院交通环保与安全研究中心,北京100029
相关基金：国家自然科学基金（40901273）; 西部交通科技项目（2008-318-221-96）; 中科院知识创新工程项目（KZCX2-YW-Q03-5）; 973项目（2008CB425802）
相关项目：地震次生山地灾害风险评价关键技术研究

关键词：汶川地震, 次生山地灾害, 分布规律, 极重灾区, 四川省, the May 12, 2008 Wenchuan Earthquake, secondary mountain hazards, distribution, the ten most severely-afflicted counties, Sichuan Province

中文摘要：

通过对汶川地震极重灾区次生山地灾害的实地考察、遥感调查和综合分析,阐述了次生山地灾害类型与特征,分析了次生山地灾害的时空分布规律,并结合灾害活动特性,探讨了次生山地灾害的发育趋势,提出了灾区防灾减灾和恢复重建的对策与建议。研究结果表明：（1）汶川地震在极重灾区诱发次生山地灾害逾万处,其分布具有点多面广、类型多样、成灾迅速、危害严重、监测预报困难等特点;（2）次生山地灾害的分布受地震烈度、地质构造、地形地貌、地层岩性的制约,并具有明显的滞后性和延续性;（3）利用GIS和遥感技术,能够快速有效地进行地震次生山地灾害的动态监测与灾情评估,从而为防灾减灾管理和灾后重建工作提供科学依据和借鉴参考。

英文摘要：

Based on the field investigation,remote-sensing investigation and comprehensive analysis of secondary mountain hazards induced by the Wenchuan Earthquake,the paper took the ten most severely-afflicted counties as a pilot site,discussed the types and features of secondary mountain hazards and explained the spatio-temporal distribution law of secondary hazards.In view of the above,the development of secondary hazards was probed and the suggestions of disaster-prevention and mitigation suggestion were given according to the disaster action features.The findings show that： a） Secondary mountain hazards triggered by Wenchuan Earthquake occur more than 10 000 sites and scatter widely in the study areas with the features of various types,rapid occurrence,large scale,serious damage and diffculties in monitoring and forecasting;b） the distribution of secondary hazards is dominated by geologic structure,topography,physiognomy and lithology as well as the development of secondary hazards with significant lay and continuity;c） secondary mountain hazards can be effectively monitored and assessed by means of the technologies of geographical information system（GIS） and remote sensing（RS）.The findings of this paper can be used as a scientific basis for preventing and mitigating secondary mountain hazards and making reconstruction of the afflicted areas.

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