摘要
Abstract
On the basis of geological surveying,interviews and collected information in Wangatan catchment debris-flow basin,the stratum lithology,the amount of loose debris,the terrain,the gully longitudinal gradient and the runoff power are identified,and the debris flow type and scale are defined.Then based on the analysis of the twelve single factors quantification and semi quantification of debris flow,the activeness of debris flow and triggering heavy rainfall type are determined.The related parameters including debris flow fluid density,discharge and maximum one time accumulated sediments are calculated.And the erosion and sediment of the railway through the area with debris flow are calculated.Finally,with reference to relative spatial relationship between Lanzhou-Hezuo railway and debris flow,the influence of debris flow on Lanzhou-Hezuo newly-built railway is analyzed and rationale engineering measures and suggestions are presented.关键词
泥石流/流域环境条件量化权重标准/12个单因子/兰合铁路Key words
Debris flow/Catchment environmental conditions of quantitative weight standard/Twelve single factors/Lanzhou-Hezuo Railway分类
交通工程
