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本研究提供了一种基于滑坡敏感性与降雨强度-历时(I-D)的中国浅层降雨滑坡时空模拟的方法.该研究用到了滑坡敏感性指数与I-D阈值,实现了实时模拟中国整个区域内浅层降雨滑坡可能发生的时间与地点.论文主要包括三个部分:首先,介绍了前期中国滑坡敏感性的工作,整个区域按照滑坡敏感性的指数分为5类(低、较低、中、较高、高),其中较高与高敏感区域占到总区域的4.15%;其次,采用TMPA3B42的降雨产品分析近年来60起降雨滑坡事件,统计拟合降雨强度与历时的关系,并构建降雨滑坡响应阈值.最后,综合上述的工作,模拟了浅层降雨滑坡的时空分布,并通过实例进行了验证.本研究为浅层降雨滑坡模拟预测提供了一种理论依据,旨在能够为降雨滑坡灾害预警与防治提供帮助.
This study provides a method for spatio-temporal simulation of shallow rainfall landslides in China based on landslide susceptibility and rainfall intensity-duration (ID), which uses landslide susceptibility index and ID threshold to realize real-time simulation of shallow This paper mainly includes three parts: Firstly, it introduces the work of previous landslide susceptibility in China, and the whole area is divided into 5 categories according to the indices of landslide susceptibility (low, low, medium and relatively) High and high), of which, the high and high sensitive areas accounted for 4.15% of the total area; secondly, 60 rainstorm landslides in recent years were analyzed by rainfall products of TMPA3B42, the relationship between rainfall intensity and duration was statistically fitted, Response threshold.Finally, based on the above work, the spatio-temporal distribution of shallow rainfall landslides is simulated and validated by examples.This study provides a theoretical basis for the simulation of shallow rainfall landslides in order to provide a theoretical basis for rainfall and landslide hazards Early warning and prevention to provide help.