拉萨市柳梧乡卡龙孔沟泥石流特征与发展趋势  

Characteristics and Development Trend of Debris Flow in Carongkong Gully,Niu New Area,Lhasa

作　　者：徐琳[1] 肖进[1] 胡林[1] 单增卓玛 格桑平措 赵海华 达娃 XU Lin;XIAO Jin;HU Lin;Tenzin Zhuoma;Kelsang Phuntsok;ZHAO Hai-hua;Dawa(Northwest Sichuan Geological Party,BGEEMRSP,Mianyang,Sichuan621000;Geothermal Geological Party,Bureau of Geology and Exploration and Exploitation of Mineral Resources of Tibet Autonomous Region,Lhasa850032)

机构地区：[1]四川省地质矿产勘查开发局川西北地质队,四川绵阳621000 [2]西藏自治区地质矿产勘查开发局地热地质大队,拉萨850032

出　　处：《四川地质学报》2021年第4期622-625,共4页Acta Geologica Sichuan

基　　金：西藏自治区堆龙德庆区1:5万地质灾害详细调查。

摘　　要：柳梧乡卡龙孔沟于2018年7月29日暴发泥石流,造成沟口农户1间房屋被损毁,目前威胁7户36人及房屋、公路等。通过调查发现卡龙孔沟具有沟域面积不大,但相对高差大、主沟纵坡降大的有利水动力条件。沟域内物源较丰富,包括沟道堆积物源、滑坡物源、坡面侵蚀物源,松散物静储量约23.04×10^(4)m^(3),可参与泥石流运动的动储量为2.66×10^(4)m^(3)。近年来强降雨天气频发,卡龙孔沟再次发生泥石流的可能性较大,建议尽快采取工程治理措施。The Carongkong gully debris flow in Niu New Area,Lhasa happened on July 29,2018,destroying a farmhouse.It currently threatens the safety of local residents and roads.The Carongkong gully has favorable hydrodynamic conditions with small area,large relative height difference and large longitudinal gradient of the main gully.There are abundant material sources in the gully region with static loose material of 23.04×10^(4)m^(3) and dynamic loose material of 2.66×10^(4)m^(3).There is a high possibility of debris flow occurring again in the Carongkong gully due to frequent heavy rainfall in recent years.It is suggested to take control measures as soon as possible.

关 键 词：拉萨市 卡龙孔沟 泥石流 发育特征 发展趋势 

分 类 号：P642.23[天文地球—工程地质学]