延安市宝塔区地质灾害详细调查示范
A Demonstration Project for Detailed Geo-hazard Survey in the Baota District,Yan’an
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摘要: 通过宝塔区地质灾害详细调查示范项目的实施,总结了详细调查的技术路线和技术方法。从宝塔区地质灾害的类型、发育特征、时空分布规律、形成条件与触发因素,以及地质灾害易发程度区划、危险程度区划、气象预警区划和应急搬迁避让场址等8个方面总结了详细调查取得的主要成果。认为做好项目的部署、组织与实施是详细调查成败的关键;紧密与各级政府结合,做好群测群防网络建设是减灾防灾的必由之路;提高成果的实用性是详细调查的根本目的;新技术新方法是地质灾害详细调查的重要手段;详细调查成果为开展地质灾害风险评估和气象预警提供了可靠的依据;试点调查中采用的技术路线与调查方法可行,在全国地质灾害高风险区开展详细调查的技术条件已经具备。Abstract: Based on the experience from implementing the demonstration project for detailed geo-hazard survey in the Baota district, Yan'an, this paper provides a summary of the methodology and techniques suitable for detailed geo-hazard survey. The results of the demonstration project indicate that a detailed geo-hazard survey can be approached from eight aspects, i.e., type of geo-hazard, evolutionary characteristics, spatial and temporal distribution, formation conditions and triggering factors, zonation of geo-hazard,susceptibility,risk zonation,climate warning zonation and shelter sites for emergency.It is concluded that a key to the success of a survey project is project planning,organization and implementation.It is also essential to cooperate with local governments to build networks of volun teers to monitor and prevent potential geo-hazards.Further more a detailed geo-hazard survey is heavily dependent on new technologies and new methods.Finally,a detailed survey provides a solid basis for risk analysis and climate warning systems.The technical approach and methodology used in this pilot survey are fea sible and ready for application to detailed survey of land slides in high risk zones in other parts of China.
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Keywords:
- land slide /
- collapse /
- geological hazard /
- detailed survey
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