岷江上游山区聚落与滑坡灾变的链式耦合机制

Study of mountainous hazards is so important as well as mountainous settlements in the study of mountainous area. The study between their interaction and coupling mechanism is the key issue among these studies. In this project, mountainous settlement and landslide in the typical mountain area in the Upper Reaches of Min River are the research objective to study the spatial response relationship between mountainous settlement and landslide with the methods of prototype observation, remote sensing interpretation, spatial analysis of GIS and numerical simulation. Spatial coupling characteristics of mountainous settlement and landslide would be clarified through quantitatively analyzing landslide chain effects and its influence scale, meanwhile, the mathematical model of response of mountainous settlement would be built which is resulted from landslide. Furthermore, the commensal regularity between mountain environment and its hazards would be revealed. This is significant for discussing disaster prevention and reduction in the mountain area, and it can also provide some new thoughts for harmonious development of mountainous settlement and environment hazards.

山区聚落和山区灾害是山地研究中的重要核心内容，二者的相互影响和耦合机制是山区发展和山区防灾减灾的关键。本项目选择岷江上游典型山区为研究区域，以山区聚落和滑坡灾变为研究对象，采用原型观测、遥感解译、GIS空间分析和数值模拟方法，进行山区聚落与滑坡灾变的耦合机制研究。旨在通过对滑坡灾变链式阶段的划分，定量分析其链式效应及影响尺度，进而探求山区聚落对滑坡灾变不同阶段的链式响应，建立链式响应的数学模型，阐明山区聚落与滑坡灾变的耦合机制，并揭示山区环境及其灾变的共生规律，为进一步探讨山区防灾减灾、山区聚落与环境灾变协调发展的途径提供思路。

项目背景：山区聚落和山区灾害是山区研究中的重要核心内容，二者的相互影响和耦合机制是山区发展和山区防灾减灾的关键。在这个大背景下，该项目主要进行了以下几方面的研究。.研究内容：岷江上游山地灾害的影响（主要进行了滑坡危险性评价研究）、山区聚落对灾害的响应（主要进行了滑坡易损性评价研究）以及二者的耦合（滑坡风险评价研究）。.重要研究结果：分别从不同空间尺度上进行研究，分别对整个岷江上游、区域内典型小流域以及某些典型灾害点的的险性评价结果、易损性评价结果以及风险评价结果。.科学意义：通过项目组3年来对本项目的调查、分析和研究，详细了解了研究区岷江上游山区聚落和山区灾害的发育情况并对二者进行了耦合研究，研究结果可以为山区发展和防灾减灾以及山区聚落与环境灾变协调发展提供依据和思路。