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通过对兰州市地质灾害详细调查确定的各类泥石流灾害点148处的统计,统计分析了地形地貌主要表现在沟床比降、沟坡坡度、流域面积、相对高差、流域形态和沟壑密度对泥石流控制影响分析,并对泥石流有主要控制影响的沟床比降、沟坡坡度、流域面积、相对高差4项进行了相关性分析,对该区域泥石流灾害的预警预报有一定的指导意义。
Based on the statistics of 148 landslides hazards identified by a detailed investigation of the geological disasters in Lanzhou City, the topographic and geomorphological features are mainly analyzed in terms of the ratio of ditches to ditches, ditch slope, drainage area, relative height difference, watershed morphology and gully density Debris flow control impact analysis, and the main control of debris flow ditches than the ditch, ditch slope, watershed area, the relative elevation of four correlation analysis of the debris flow in the region of early warning and forecasting has some guidance.