西藏仁布县巴曲沟泥石流发育特征及防治建议

Development Characteristics of Debris Flow in the Baqu Gully,Rinbung County,Tibet,and Suggestions on Its Control

仁布县位于西藏喜马拉雅构造带,地质构造条件复杂,河流切割强烈,山高谷深,斜坡陡峻,地质灾害多发。2015年以来,日喀则及其周边多次发生强或较强地震,对区内地质环境造成了一定程度影响,诱发滑坡、崩塌和泥石流灾害。本文采用调查、测绘、测试分析等手段对巴曲沟泥石流发育的地形地貌、地层岩性、物源、降雨、发生频率、规模、灾情和险情等进行了研究评价,查明了泥石流发育特征,开展了防治对策研究,对研究区内地质灾害发生发育规律,提高地质灾害防灾减灾能力提高有着重要的意义。

Rinbung County lies in the Himalayan structure zone characterized by strong cut,many high mountain and deep valley,complicated geological condition and frequent geohazards.Since 2015 there have been several strong earthquakes in the Xigazêregion which have induced geohazards such as landslide,avalanche and debris flow.This paper deals with lithology,landform,rainfall,frequency and scale of the debris flow in the Baqu Gully and makes suggestion on control of the geohazards.