岩崩灾害颗粒分选机理与易损性定量评价研究

Rock avalanche are the most serious secondary hazards due to their characteristics of strong dynamic, fragmentation and high-speed, which have caused a large quantity of casualties and property losses. Rock avalanche have the unique dynamic characteristics that the others do not possess. Therefore, the applicant will base on the typical rock avalanche disasters and combine with the method of the field investigation, the model experiment, the theoretical analysis and the numerical experiment in order to reveal the particles separation mechanism the fragmentation dynamic evolution mechanism of rock avalanche, reappear and predict the deposition processes of rock avalanche through building the dynamic simulation platform with independent intellectual property and constructing the hazardous areas prediction model. Furthermore the dynamic interaction between rock avalanche and bodies bearing disasters would be studied, the impacting damage mechanism would be revealed and the vulnerability assessment model of rock avalanche would be constructed. Based on this, the quantitive risk analysis method based on the dynamic processes of rock avalanche would be built and the basic theory support of disaster reduction of potential rock avalanche in pleistoseismic zone would be provided. The research accomplishments would guild for planning town construction, selecting road lines and the siting of major engineering projects.

岩崩以其超强的动力特性、碎屑化和高速的特点而成为严重的次生地质灾害，并造成大量人员伤亡和财产损失。为此，以典型岩崩灾害为研究对象，通过现场调查、模型试验、理论分析和数值试验等手段相结合，揭示岩崩的颗粒分选和碎屑化动力演化机理，搭建具有自主知识产权的岩崩动力学仿真平台，构建岩崩危害区域预测模型，再现或预测岩崩运动-堆积过程；研究崩塌与承灾体的动力相互作用，揭示崩塌对承灾体的冲击破坏机理，构建岩崩易损性评价模型；在此基础上，建立基于岩崩动力过程的定量风险分析方法，为我国强震带潜在岩崩减灾提供基础理论支撑，研究成果对我国强震带城镇建设规划、道路选线、重大工程建设选址具有重要的指导意义。

岩崩以其超强的动力特性、碎屑化和高速的特点而成为严重的次生地质灾害， 并造成大量人员伤亡和财产损失。为此，以典型岩崩灾害为研究对象，通过现场调查、模型 试验、理论分析和数值试验等手段相结合，揭示岩崩的颗粒分选和碎屑化动力演化机理，搭 建具有自主知识产权的岩崩动力学仿真平台，构建岩崩危害区域预测模型，再现或预测岩崩 运动-堆积过程；研究崩塌与承灾体的动力相互作用，揭示崩塌对承灾体的冲击破坏机理，构建岩崩易损性评价模型；在此基础上，建立基于岩崩动力过程的定量风险分析方法，为我国强震带潜在岩崩减灾提供基础理论支撑，研究成果对我国强震带城镇建设规划、道路选线、重大工程建设选址具有重要的指导意义。