CHANG Ming, TANG Chuan, SU Yongchao, HUANG Xiangchao. 2012: PREDICTION MODEL FOR DEBRIS FLOW HAZARD ZONE ON ALLUVIAL FAN IN MILIN SECTION OF YARLUNGZANGBO RIVER,TIBET. JOURNAL OF ENGINEERING GEOLOGY, 20(6): 971-978.
    Citation: CHANG Ming, TANG Chuan, SU Yongchao, HUANG Xiangchao. 2012: PREDICTION MODEL FOR DEBRIS FLOW HAZARD ZONE ON ALLUVIAL FAN IN MILIN SECTION OF YARLUNGZANGBO RIVER,TIBET. JOURNAL OF ENGINEERING GEOLOGY, 20(6): 971-978.

    PREDICTION MODEL FOR DEBRIS FLOW HAZARD ZONE ON ALLUVIAL FAN IN MILIN SECTION OF YARLUNGZANGBO RIVER,TIBET

    • The Milin county along Yarlungzangbo river is closed to the Indian plate with the Eurasian plate collision zones, where the tectonic movement is intense and the seismic activity is frequent. So debris flow are widely distributed. This paper uses the remote sensing and field investigation and examines 34 debris flow gullies which have an integrated deposit fan. Using geographical information system and remote sensing software, the paper analyses the basic parameters of the basin such as basin relief and the volume source. The regression analysis on the maximum length and width runout and their topographical factors is conducted using the software Mat lab. It is found that the maximum length and width runout have an obvious index correlation with the basin relief and the volume source. Based on the found single factor regular, the predicting model on evaluating the debris flow's hazardous range is established. This model absorbs the previous model advantages, distinguishes the risk range by less factors and saves time. It can be better and faster against the disaster.
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