贵州望谟县乐旺镇纳巴泥石流发育特征与发展趋势  

DEVELOPMENT CHARACTERISTICS AND TREND OF NABA DEBRIS FLOW IN LEWANG TOWN,WANGMO COUNTY,GUIZHOU PROVINCE

作　　者：侯江萍 周俊 HOU Jiang-ping;ZHOU Jun(Team 1,Guizhou Nonferrous Metals and Nuclear Industry Geological Exploration Bureau,Qingzhen 551400)

机构地区：[1]贵州省有色金属和核工业地质勘查局一总队,贵州清镇551400

出　　处：《云南地质》2023年第2期244-250,共7页Yunnan Geology

摘　　要：泥石流是一种强降雨诱发的突发性地质灾害,严重影响地方的安全稳定和社会经济发展。通过调查测量、取样测试,分析研究表明:望谟县乐旺镇纳巴泥石流流域最大高差达665m,山体平均坡度多在35°以上,坡面岩土风化强烈,固体物源方量可能参与泥石流活动的物源动储量大,多年平均降水量大为泥石流的诱发因素。Debris flow is a sudden geological disaster induced by heavy rainfall,which seriously affects local security,stability and social and economic development.Through investigation,measurement,sampling and testing,the analysis and research results show a maximum elevation difference of 665m of the Naba debris flow basin in Lewang Town,Wangmo County,and average slope of the mountain mostly above 35°.The geotechnical weathering on the slope is strong,and large reserves of solid sources may participate in debris flow activities.The large average annual precipitation is the induced factor for debris flows.

关 键 词：稀性泥石流 发育特征 发展趋势 乐旺镇纳巴泥石流 贵州望谟县 

分 类 号：P642.23[天文地球—工程地质学]