摘要
云南省绿春县牛孔河南岸和北岸的泥石流发育阶段的差异明显。为研究同一流域存在这种差异的原因,以戴维斯地貌侵蚀理论为基础,探讨了泥石流发育阶段划分标准,将泥石流发育阶段划分为发育期、旺盛期、衰退期和停歇期,并采用面积-高程积分法定量分析了牛孔河流域8条泥石流沟的发育阶段。研究表明:发育在牛孔河北岸的N1~N3泥石流沟处于泥石流发育的衰退期,发育在牛孔河南岸的N4~N8泥石流沟处于泥石流发育的旺盛期;断裂是导致牛孔河流域泥石流发育阶段存在差异的主要原因,牛孔-黄草岭断层走向与牛孔河主河道延伸方向基本平行;现阶段衰退期泥石流位于牛孔-黄草岭断层上盘,而处于旺盛期泥石流位于该断层下盘。
There is significant difference between the development stage of debris flow gullies on the south bank and north bank of Niukong River in Luchun County,Yunnan Province,China.In order to study the reason of the difference,this paper discusses the criteria for dividing the development stage of debris flows based on Davis′theory of geomorphic erosion,and divides the development stage of debris flows into development stage,exuberant stage,declining stage and rest stage.This paper quantitatively analyzes the development stage of 8 debris flow gullies in Niukong River Basin using the area-elevation integral method.The results show that:the N1~N3 debris flow gullies on the north bank of Niukong River are in the declining stage,and the N4~N8 debris flow gullies on the south bank are in the exuberant stage.The analysis shows that the fault is the main reason for the development stage difference of debris flows in Niukong River Basin.The strike of Niukong-Huangcaoling fault is basically parallel to the extension direction of Niukong River.At present,the debris flow gullies in the declining stage are located in the upper wall of the fault,and those in the exuberant stage are located in the lower wall of the fault.
作者
陈爱云
李浩
周浩
汪洋
刘宇航
CHEN Aiyun;LI Hao;ZHOU Hao;WANG Yang;LIU Yuhang(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China;Faculty of Engineering,China University of Geosciences,Wuhan 430074,China;Institute of Geological Survey,China University of Geosciences,Wuhan 430074,China)
出处
《人民长江》
北大核心
2021年第3期107-111,117,共6页
Yangtze River
基金
中铁第四勘察设计院集团有限公司科学技术研究项目(2018K082-1)。
关键词
泥石流发育阶段划分
面积-高程积分值
牛孔河流域泥石流
牛孔-黄草岭断层
division of development stage of debris flow
area-elevation integral value
debris flow in Niukong River Basin
Niukong-Huangcaoling fault
