A survey was conducted on the terrain,landforms,and rainfall characteristics of certain existing railway in mountainous areas,and typical parameters of the cutting slope of were obtained.Based on the practical requirements of improving the success rate of early warning under various disaster causing rainfall types,a rainfall warning surface was established using effective cumulative rainfall,hourly triggered rainfall,and rainfall duration as the rainfall warning space.Using statistical analysis of rainfall data of 2012～2019 years,the parameters of the rainfall warning surface suitable for the collapse disease were determined.The warning effect of the rainfall warning surface in the same section was compared and analyzed with the traditional I-D rainfall warning curve.The 2020 year rainfall data was used to verify the warning surface.The results show that the rainfall warning curve can effectively warn of railway collapse diseases on existing railway lines in mountainous areas,with a success rate of 90%.
关键词
山区铁路/降雨/浅层溜坍/降雨预警曲面/统计分析
Key words
railway in nountainous area/rainfall/shallow slope collapse/rainfall warning curves/statistical analysis
维普
万方数据