泥石流危害桥隧工程承灾链特征与工程易损度动态评价方法研究

项目名称： 泥石流危害桥隧工程承灾链特征与工程易损度动态评价方法研究

项目编号： No.41272376

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 徐林荣

作者单位： 中南大学

项目金额： 89万元

中文摘要： 泥石流危害巨大已为共识，目前研究成果丰富，但仍无法有效遏制其对桥隧工程巨大破坏性。重要原因之一是：基于风险设计泥石流治理措施第一承灾体，与基于土木工程标准设计的基础设施（如桥隧工程）第二承灾体，共同承灾机理没有被认识到。为此，本项目提出承灾链（治理措施与基础实施）共同承灾的防灾减灾新理念，拟首先探明我国泥石流孕灾环境区域特性与致灾特点，采用案例分析法，总结提炼基于承灾链的泥石流危害桥隧工程致灾模式及其变化特点，并开展定床正态模型槽试验，研究承灾链共同承灾的合理匹配关系，揭示泥石流危害桥隧工程致灾机理。为量化评价新理念防灾效果，搭建地质灾害治理风险设计与基础设施土木工程标准设计之间的桥梁，基于申请人提出的工程易损性概念，建立考虑功能损失与结构损坏的工程易损性动态评价新方法，将政府宏观治灾规划的经济价值尺度衡量的易损性，延伸到直接应用于工程、管理部门的设计与施工的工程易损性。

中文关键词： 泥石流；承灾链；匹配关系；工程易损性；致灾模式

英文摘要： A consensus has been widely reached that the debris flow could cause enormous harm. At present, although there are abundant achievements for debris flow's prevention and mitigation, it's still not effective in curbing its tremendous devastation towards bridge/tunnel engineering. An important reason is that the mechanism of joint counter-disaster hasn't been realized, in which the counter-measures designed in the risk-management and the bridge/tunnel engineering designed in the civil-engineering's criterion respectively serve as the hazard-affected body. Therefore, a new concept for disaster prevention and mitigation was put forward, in which the hazard-affected chain combined with counter-measures and infrastructure jointly counter the disaster, planning to verify the debris flow's regional triggering environment and its hazard characteristics. Based on the hazard-affected chain, this project would summarize and extract the hazard mode and its changing pattern for the debris flow's damage on bridge/tunnel engineering with the case analysis method. Through studying the legitimate matching relation for the hazard-affected chain, the joint counter-disaster's action mechanism would be revealed by conducting the immovable bed normal model experiment. For the purpose of quantificational assessment on the effect of dis

英文关键词： Debris flow；Disaster bearing chain；Appropriate match；engineering vulnerability；hazardous model