摘要
白龙江中游地区是我国地质构造复杂、构造运动强烈、地形破碎、雨季集中的脆弱带,4种因素相互叠加,使其成为我国著名的泥石流活跃区域。泥石流的特点是发育历史长,分布密集,暴发频繁,以黏性土为主,做波状运动。泥石流堆积物以粗粒级为主相,具有强大的搬运能力,其沉积相分为5层,即粗砾泥石流层、细砾泥石流层、表泥层、冲刷层与底泥层。
The middle reaches of Bailong River is a fragile zone with complex geological structure,strong tectonic movement,broken terrain and concentrated rainy season in China,four factors are superimposed on each other,making it a famous active area of debris flow in China.Debris flow is characterized by long development history,dense distribution,frequent outbreaks,mainly cohesive soil and wavy movement.Debris flow deposits are mainly coarse grained and have strong transport capacity,their sedimentary facies are divided into five layers,namely coarse gravel debris flow layer,fine gravel debris flow layer,surface mud layer,scouring layer and bottom mud layer.
作者
张景庄
宋尚鑫
ZHANG Jingzhuang;SONG Shangxin(Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resourses,Jiuquan 735000,China;CHINALCO Kunming Survey and Design Institute Co.,Ltd.,Kunming 650000,China)
出处
《中国资源综合利用》
2023年第2期155-157,共3页
China Resources Comprehensive Utilization
关键词
泥石流
形成条件
特征分析
沉积相
debris flow
formation conditions
characteristic analysis
sedimentary facies
