摘要
新疆洛浦县地质灾害具有沿河谷呈链式分布的特征,灾害点密集、隐秘性高、破坏性强。为获得地质灾害易发性规律,对地质灾害点按高程范围、地形起伏度、工程地质岩组、土地利用类型、与断层的距离、与水系的距离、坡度7项指标进行统计分析,得到地质灾害分布及发育特征。再将各指标因素进行Pearson相关性分析,结果表明:7个指标可以作为地质灾害易发性评价因子,将其赋予权重叠加计算得出洛浦县地质灾害易发性综合指数在-0.56~2.04之间,地质灾害高易发区主要分布在洛浦县南部阿其克河谷中下游的低山丘陵区和铁克勒克山一带,较坚硬~较软弱厚层状碎屑岩岩组最易发生地质灾害。
Geological disasters in Luopu County,Xinjiang have the characteristics of chain distribution along the river valley,with dense disaster points,high secrecy and strong potential destruction.In order to obtain the prone law of geological disasters,the geological disaster points are statistically analyzed according to seven indexes:elevation range,topographic fluctuation,engineering geological rock group,land use type,distance from fault,distance from water system and slope.The distribution and development characteristics of geological disasters are obtained.Then the Pearson correlation analysis of each index factor shows that the seven indexes can be used as geological hazard susceptibility evaluation factors,and the comprehensive index of geological hazard vulnerability in Luopu County is calculated to be between-0.56 and 2.04.The high risk areas of geological disasters are mainly distributed in the low hilly area and Tikelek Mountain area in the middle-lower reaches of the Azike River Valley in the south of Luopu County.The harder-weaker thick-bedded clastic rock formation is most prone to geological disasters.
作者
张方璐
徐海龙
Zhang Fanglu;Xu Hailong(The first Hydrological Engineering Geology Group of Xinjiang Geology and Mineral Resources Bureau,Urumqi 830091,China;Xinjiang Geological Engineering Co.,Ltd.,Urumqi 830091,China)
出处
《吉林水利》
2023年第12期31-35,共5页
Jilin Water Resources
关键词
洛浦县
易发性
分布特征
评价因子
Luopu County
Susceptibility
Distribution characteristics
Evaluation factor
