鲜水河地震带炉霍段泥石流特征初步研究  

A Preliminary Study on of Characteristics of Debris Flows in the Xianshuihe Seismic Zone in Luhuo County

作　　者：蒋瑜阳[1] 唐川[1] 杨泰平[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059

出　　处：《灾害学》2010年第1期78-83,共6页Journal of Catastrophology

基　　金：国家自然科学基金项目(40772206);地质灾害防治国家重点实验室研究基金

摘　　要：鲜水河地震带是我国8大地震带之一,其附近区域地质灾害活动强烈。鲜水河地震带炉霍段是泥石流多发段,该地带的泥石流发育特征与活动断裂分布、地形地貌和水文气象因子密切相关。结合GIS技术,分别从地质构造、地理位势、地层岩性、水文气象和人类活动5个方面揭示了该区域泥石流的成因和分布特征。调查结果表明,研究区的泥石流发育具有明显的区域性和季节性,其发育程度与距离鲜水河断裂带的远近密切相关。Xianshuihe seismic zone is one of eight major seismic zones in China. In the vicinity of this seismic zone, the activities of geological disasters are strong. Luhuo region in this Xianshuihe seismic zone is prone to debris flow, where the development characteristics of debris flow are closely related to distribution of active faults, topography and hydrological and meteorological factors. Based on GIS technology, the causes and distributions of debris flows in this region are revealed from the perspective of geological structure, geographical location, stratum lithology, hydro-meteorological and human activities in the region. The results show that the development of the debris flow in the study area is of obvious regional and seasonal characteristics and the extent of its development is closely related with the distance to Xisnshuihe fault zone.

关 键 词：鲜水河地震带炉霍段 泥石流 GIS 分布特征 

分 类 号：P642.23[天文地球—工程地质学]