哀牢山中段地质灾害空间分布规律研究——以元江县为例  

STUDY ON SPATIAL DISTRIBUTION OF GEOLOGICAL DISASTERS IN MIDDLE PART OF AILAO MOUNTAIN: A CASE OF YUANJIANG COUNTY

作　　者：张杰 康晓波 鲁慧 赵莉 李世凯 王波 孙载波 ZHANG Jie;KANG Xiaobo;LU Hui;ZHAO Li;LI Shikai;WANG Bo;SUN Zaibo(Yunnan Institute of Geological Environment Monitoring（Yunnan Institute of Environment Geological Studying）,Kunming 650216;Yunnan Institute of Geological Survey,Kunming 650216)

机构地区：[1]云南省地质环境监测院(云南省环境地质研究院),昆明650216 [2]云南省地质调查院,昆明650216

出　　处：《工程地质学报》2018年第3期720-731,共12页Journal of Engineering Geology

基　　金：云南省应急管理专家组研究课题-云南省地质灾害应急监测预警及处置措施研究(YNYJZJZ03-2017-01);中国地质调查局地质灾害详细调查项目(1212010914001);国土资源部公益性行业科研专项(201211055);云南省地质灾害综合防治体系建设实施方案(2013-2020年)(云政发[2013]108号)资助

摘　　要：元江县地处哀牢山褶皱带、红河断裂中段,地质构造复杂,工程地质条件脆弱,是云南省地质灾害最为发育的地区之一。作者从空间方面详细阐述了研究区地质灾害分布规律:(1)研究区地质灾害空间分布差异明显,在红河两岸呈现出空间分布不均匀、部分地区集中分布的特征;(2)坡型为直线形和阶梯状、坡向为45°~135°、坡度为20°~50°、高程为l500~2000 m的地形中地质灾害最为发育;(3)在研究区西部哀牢山一带的构造侵蚀地形区地质灾害发育数量最多,南部红河下游两岸的侵蚀堆积地形区地质灾害发育密度最大;(4)研究区主控构造对地质灾害的控制效应较明显,在断裂带交汇处或主断裂走向发生变化地段,地质灾害较为发育。对研究区地质灾害空间分布规律的深入研究,可为当地地质灾害治理、搬迁选址等防灾减灾工作提供地质依据及参考。Yuanjiang County is located in the middle of the Ailaoshan fold belt and Red River fault,The geological structure is complex and the engineering geological conditions are fragile. It is one of the most developed areas of geological disasters in Yunnan Province. The authors elaborate the distribution law of geological 4disasters from the space side.（ 1） The difference is obviously of spatial distribution of geological disasters in the study area. The characteristics of spatial distribution are not uniform. The concentrated distribution areas are on both sides of the Red River.（ 2） The geological disasters are mostly developed in the terrains of linear and stepped slope types,slope dip directions of 45° - 135°,slope dip angles of 20° - 50°,and elevation of l500 to 2000 m.（ 3） The number ofgeological disasters is the largest in the Ailao Mountain area of the western part to study area. The density of geological disasters is the largest in the south of the Red River.（ 4） The control effect of geological disasters is obvious the main control structure in the study area. The geological disasters are very developed in the Yuanjiang county. The findings can provide geological basis and reference for disaster in the junction of the fault zone or at the change of main rupture. The study on the spatial distribution of prevention and mitigation can guide the local geological disaster management and relocation site effectively.

关 键 词：哀牢山 变质岩 元江县 地质灾害 分布规律 

分 类 号：P64[天文地球—地质矿产勘探]