北京延庆泥石流隐患分布规律及演化趋势研究  

Study on the distribution law and evolution trend of debris flow hazards in Yanqing,Beijing

作　　者：王瑞军[1] 王帅东 孙永彬[1] 王诜 张春雷[1] 王永军[1] WANG Ruijun;WANG Shuaidong;SUN Yongbin;WANG Shen;ZHANG Chunlei;WANG Yongjun(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,China;North China Oilfield First Oil Production Plant,Baoding,062552,China)

机构地区：[1]核工业航测遥感中心,河北石家庄050002 [2]华北油田第一采油厂,河北保定062552

出　　处：《世界核地质科学》2024年第3期623-632,共10页World Nuclear Geoscience

基　　金：北京市泥石流沟精细调查基金项目(编号:0747-1761SITCN426-4)、核工业航测遥感中心自主研发项目(编号:2020-08和2022-11)联合资助。

摘　　要：泥石流是一种具有强烈破坏性的山区突发性地质灾害现象,是北京山区较严重、危害性较大的地质灾害类型之一。北京延庆泥石流灾害的研究主要针对局部或单流域泥石流沟,区域性的泥石流隐患特征、分布规律以及演化特征等研究工作极少。以北京延庆泥石流隐患为研究对象,旨在为延庆山区泥石流灾害预警预报和防灾减灾提供理论依据。通过收集延庆泥石流隐患相关文献资料,实际调查泥石流隐患发育特征,系统分析延庆泥石流灾害的孕灾背景情况,梳理自然地理、地质背景及人类活动之间的内在联系,查明泥石流隐患的沟域和物源特征,研究泥石流隐患所在流域的地貌形态、地形坡度、降雨条件及地层岩性的分布特征,探究泥石流、水石流和发育期、衰退期泥石流隐患的物源分布规律,查清泥石流隐患的物源转化过程,掌握延庆主要处于发育期和衰退期的泥石流隐患演化趋势。研究结果表明:延庆泥石流隐患属于暴雨型-沟谷型-支沟群发型泥石流,泥石流规模大小与流域地形地貌、松散堆积物累积、动态变化以及暴雨情况相关,研究成果可为泥石流调查研究、预测预报和监测预警提供科学依据和技术参考。Debris flow is a highly destructive and sudden geological disaster phenomenon in mountainous areas,and is one of the much serious and harmful types of geological disasters in Beijing’s mountainous areas.Most research on debris flow disasters in Yanqing district,Beijing mainly focused on local or single basin debris flow in gullies,few research analyzed the characteristics,distribution patterns and evolution characteristics of regional debris flow hazards.This paper studied the hidden dangers of debris flow in whole Yanqing district so as to provide theoretical basis for the early warning and prediction of debris flow disasters in mountainous areas as well as disaster prevention and reduction.By collecting relevant literature and materials and conducting a detailed investigation of the development characteristics of debris flow hazards,this paper systematically analyzed the disaster background of debris flow hazards,sorted out the inherent connections between natural geography,geological background and human activities,studied the gully and source characteristics of debris flow hazards,the distribution characteristics of geomorphic morphology,terrain slope,rainfall conditions,and stratigraphic lithology in the watershed where debris flow hazards are located,explored the distribution patterns of debris flow,water and stone flow,as well as the development and decline stages of debris flow hazards,clarified the transformation process of debris flow hazards.The evolution trend of debris flow hazards in Yanqing district was found mainly in the development and decline stages,the hidden danger of debris flow in Yanqing district belongs to rainstorm-gully-branch gully group type debris flow,the scale of debris flow is closely related to the topography and geomorphology of the basin,the accumulation and dynamic change of loose deposits in the gully area,and the rainstorm situation.This research results will provide scientific basis and technical reference for the investigation,prediction,monitoring and early warning of d

关 键 词：泥石流 分布规律 地质灾害 延庆 

分 类 号：P694[天文地球—地质学] P642.23