摘要
皮里青河流域地处新疆西北部黄土覆盖区,属于大陆性半干旱气候,春季降水与融冻作用引发大量黄土滑坡灾害,造成人员伤亡和财产损失。本文通过对该流域内黄土滑坡现场开展调查,在查明皮里青河基本环境地质条件的基础上,采用统计分析法和定性分析方法对滑坡进行分类和时空分区,将其滑坡分为黄土泥流、黄土层内滑坡、黄土基岩滑坡3类;分析滑坡分布与河流和地层的位置关系;分析滑坡发生时间规律。对滑坡的基本特征数据进行统计分析,得出区域滑坡形态、体积、主滑方向和滑坡坡度基本特征呈现出的规律。文章定性分析了滑坡的诱发因素,主要为降水作用、河流侵蚀和冻融作用。
Piliqing River Basin locates in loess covered area in the north-west of Xinjiang,which belonging to the continental semi-arid climate,spring precipitation and freeze-thaw action cause a lot of loess landslidedisasters,leading casualties and property losses. In this paper, through the investigation in the loess landslides,use statistical analysis method and qualitative analysis method to classify and spatio-temporal partition of landslides,the landslides are divided into loess mudflow,loess landslide and loess-bedrock landslide; analysis relationships of landslide distribution to the river、stratum and time. The basic characteristics of landslides are statistically analyzed,and the basic characteristics of regional landslide shape,volume,main slip direction and landslide slope are obtained. Qualitative analysis the induced factors of landslides,mainly precipitation,river erosion and freeze-thaw action.
出处
《中国地质灾害与防治学报》
CSCD
2018年第1期54-59,共6页
The Chinese Journal of Geological Hazard and Control
基金
中国地质调查局地质调查项目:新疆叶城-乌恰城区综合地质调查(DD20179609)
关键词
皮里青河
黄土滑坡
发育特征
Piliqing River
loess landslides
develop-characters
