屈永平, 唐川. 2014: 暴雨型泥石流预警模型初步研究. 工程地质学报, 22(1): 1-7.
    引用本文: 屈永平, 唐川. 2014: 暴雨型泥石流预警模型初步研究. 工程地质学报, 22(1): 1-7.
    QU Yongping, TANG Chuan. 2014: PRELIMINARY STUDY OF PREDICTION MODEL FOR EARLY WARNING OF DEBRIS FLOW. JOURNAL OF ENGINEERING GEOLOGY, 22(1): 1-7.
    Citation: QU Yongping, TANG Chuan. 2014: PRELIMINARY STUDY OF PREDICTION MODEL FOR EARLY WARNING OF DEBRIS FLOW. JOURNAL OF ENGINEERING GEOLOGY, 22(1): 1-7.

    暴雨型泥石流预警模型初步研究

    PRELIMINARY STUDY OF PREDICTION MODEL FOR EARLY WARNING OF DEBRIS FLOW

    • 摘要: 2010年8月13日四川都江堰市龙池地区暴发了特大规模的群发性暴雨型泥石流过程,给龙池地区的震后恢复重建带来了巨大的灾难,因此,研究该区泥石流发生机理和预警十分必要。本文在总结前人关于泥石流暴发与降雨条件研究成果基础上,发现泥石流物源含水量及地表径流流深等是导致流域内松散物源启动的主要原因。根据其前期降雨量和有效降雨强度等特征,建立了泥石流流域物源土体颗粒个别启动、局部启动和大量启动的判别式,建立了适合该区域暴雨泥石流预警模型,将可能诱发泥石流暴发的不同降雨条件划分为蓝、黄和红色3个危险等级,为该区泥石流监测预警提供了科学依据。

       

      Abstract: On 13th August 2010, large numerous debris flows occurred due to high intensity rainfall in Longchi area of Dujiangyan city. These disastrous debris flows brought heavy damage to reconstruction of the earthquake damaged region. It is very important to study the formative mechanism and early mitigation warning of the debris flows in this area. Based on the research achievements of predecessors such as occurrence and rainfall condition, this paper reveals that the water content of sediments and the depth of surface runoff are important factors to the initiation of debris flows. According to the characteristics of antecedent rainfall and effective rainfall intensity when debris flows occur, this paper establishes an initiation model of debris flow in this region. It is related to three grades of soil particle initiation processes. They are individual, partial, and whole grades. The different rainfall conditions are divided into blue, yellow and red three risk levels for this area of debris flow monitoring and early warning.

       

    /

    返回文章
    返回