威胁对象分散型泥石流沟谷灾害特征及防治对策——以青龙县二道沟泥石流为例  

Disaster characteristics and prevention measures of debris flow gully disaster with dispersed threat objects:Take Erdaogou debris flow in Qinglong County as an example

作　　者：刘京楠 王喜军 程立群 王玉珏 徐一鸣 LIU Jingnan;WANG Xijun;CHENG Liqun;WANG Yujue;XU Yiming(The Eighth Geological Brigade,Hebei Provincial Bureau of Geology and Mineral Resources,Qinhuangdao 066000,Hebei,China;The Administration Center of the State level Nature Reserve for Geological Relics of the LiuJiang basin,Hebei Province,Qinhuangdao 066000,Hebei,China;Hebei Baodi Construction Engineering Corporation,Ltd.,Qinhuangdao 066000,Hebei,China)

机构地区：[1]河北省地质矿产勘查开发局第八地质大队,河北秦皇岛066000 [2]河北柳江盆地地质遗迹国家级自然保护区管理中心,河北秦皇岛066000 [3]河北宝地建设工程有限公司,河北秦皇岛066000

出　　处：《矿产勘查》2024年第S2期709-718,共10页Mineral Exploration

基　　金：河北省自然资源厅2020年度水工环海专项预算项目(454-0502-JBN-330G)资助。

摘　　要：青龙满族自治县为秦皇岛市地质灾害易发多发县,其中以泥石流地质灾害最为常见。本文以青龙满族自治县二道沟泥石流为例,通过实地调查与综合分析,总结了其地质特征,提出了防治对策。研究表明,该泥石流沟所在位置沟谷发育、地形起伏大,物源来源于坡面残坡积及沟底冲洪积物,水源主要为大气降水。该泥石流沟为老泥石流沟,间歇性泥石流沟,易发程度为易发,总体上属暴雨沟谷型稀性泥石流。根据计算得出的泥石流流体重度、流速、流量、一次冲出量、一次固体冲出物质总质量等指标,提出了在研究区内设置雨量监测站的监测预警方案,以及固源+排导相结合的综合工程治理方案。Qinglong Manchu Autonomous County is a county prone to geological disasters in Qinhuangdao City,among which debris flow geological disasters are the most common.This article takes the Erdaogou debris flow in Qinglong Manchu Autonomous County as an example.Through field investigation and comprehensive analysis,it summarizes its geological characteristics and puts forward prevention and control strategies.Research shows that the debris flow gully is located in a location with developed ravines and undulating terrain.The source of the debris comes from residual slope accumulation on the slope and alluvial deposits at the bottom of the gully.The water source is mainly atmospheric precipitation.This debris flow gully is an old debris flow gully,an intermittent debris flow gully,and is prone to occur.Generally speaking,it is a rainstorm ravine type sparse water-rock flow.Based on the calculated debris flow fluid weight,flow velocity,flow rate,one-time flushing volume,one-time total mass of solid flushing materials and other indicators,a monitoring and early warning plan for setting up a rainfall monitoring station in the study area,as well as a solid source+drainage guide were proposed.Combined comprehensive engineering management plan.

关 键 词：泥石流 形成条件 灾害特征 参数分析 防治对策 

分 类 号：P642.33[天文地球—工程地质学]