堆龙德庆区比西沟泥石流特征及成因机制分析  

Characteristics and Genetic Mechanism of the Bixigou Debris Flow in Doilungdêgên, Tibet

作　　者：徐琳[1] 达娃 罗绍强[1] 胡林[1] 肖进[1] 赵海华 官辉 XU Lin;DA Wa;LUO Shao-qiang;HU Lin;XIAO Jin;ZHAO Hai-hua;GUAN Hui(Northwest Sichuan Geological Party,BGEEMRSP,Mianyang,Sichuan 621000;Geothermal Geological Party,Bureau of Geology and Exploration and Exploitation of Mineral Resources of Tibet Autonomous Region,Lhasa 850032)

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3期448-452,共5页Acta Geologica Sichuan

摘　　要：堆龙德庆区比西沟于2019年7月10日暴发泥石流,造成沟口某部队、驾校和公路等被损毁。通过调查发现比西沟具有沟域面积大,主沟纵坡降大的有利地形条件和极端降雨条件;沟域内物源丰富,包括滑塌堆积物源、沟道堆积物源、坡面侵蚀物源,松散物静储量约152.52×10^(4)m^(3),可参与泥石流运动的动储量为11.64×10^(4)m^(3)。比西沟再一次爆发泥石流的可能性较大,建议尽快采取工程治理防治措施。A debris flow occurred on July 10,2019 in Bixigou Valley,Doilungdêgên,Tibet.It caused damage to a military barracks,driving school buildings and roads at mizoguchi.The Bixigou debris flow is characterized by great basin area,large longitudinal gradient of the main ditch and rich material resources with slide sediment source,channel sediment source,slope erosion sediment source and loose sediment of up to 152.52×10^(4) m^(3).There is a greater possibility of another debris flow in Bixigou Valley.It is suggested that preventive measures should be taken as soon as possible.

关 键 词：堆龙德庆区 泥石流 发育特征 成因机制 

分 类 号：P642.23[天文地球—工程地质学]