北京房山地质灾害隐患与地层岩性-地质构造耦合性分析  

Coupling analysis of geological hazards and stratigraphic lithology-geological structure in Fangshan District,Beijing

作　　者：黄艳超 胡龙兵 周萌 李宽宽 张磊 赵飞 HUANG Yanchao;HU Longbing;ZHOU Meng;LI Kuankuan;ZHANG Lei;ZHAO Fei(Comprehensive Survey Brigade of North China Geological Survey Bureau,Yanjiao,Langfang 065201,Hebei,China;Hebei Huakan Geological Exploration Co.,Ltd.,Langfang 065201,Hebei,China)

机构地区：[1]华北地质勘查局综合普查大队,河北廊坊065201 [2]河北华勘地质勘查有限公司,河北廊坊065201

出　　处：《城市地质》2025年第1期98-106,共9页Urban Geology

基　　金：2021年北京市突发地质灾害隐患治理项目(TC21080G7);北京市房山区突发地质灾害详细调查(1241STC60669/01)联合资助。

摘　　要：房山区地处北京市西南部山区。该区地质灾害隐患点在不同的地层单元内呈不均匀分布,地层孕灾概率由高到低的顺序依次为二叠系、石炭系、三叠系、侏罗系、寒武系、奥陶系、青白口系、蓟县系、长城系、白垩系以及第四系。不同的工程地质条件也影响着地质灾害的分布,崩塌和滑坡(包括不稳定斜坡)主要发生在节理发育、透水性好、力学性质不均匀的弱岩溶化硬灰岩和白云岩岩组中,泥石流多发生在结构松散、易风化堆积的强风化泥化夹层较软粉砂岩岩组中。地质构造强度和地质灾害隐患点的分布呈现出一致性,随着地质构造发育程度的增强,地质灾害隐患点密度也随之增加。Fangshan District is located in the southwestern mountainous area of Beijing.The potential geological hazards in the area were unevenly distributed in each stratigraphic unit,and the order of the probability of catastrophe in each strata was Permian,Carboniferous,Triassic,Jurassic,Cambrian,Ordovician,Qingbaikou,Jixian,Great Wall,Cretaceous and Quaternary.Different engineering geological conditions also affect the distribution of geological hazards,and collapses and landslides(including unstable slopes)mainly occur in weak karst hard limestone and dolomite rock formations,which have the characteristics of joint development,good permeability and uneven mechanical properties.Debris flows,on the other hand,mostly occur in the soft siltstone formations with strong weathered argillaceous interbedded interlayers,which usually appear to be loose in structure and easy to weather.With Fangshan District is located in the southwestern mountainous area of Beijing.The potential geological hazards in the area are unevenly distributed in each stratigraphic unit,and the order of the probability of catastrophe in each stratum is Permian,Carboniferous,Triassic,Jurassic,Cambrian,Ordovician,Qingbaikou,Jixian,Great Wall,Cretaceous and Quaternary.Different engineering geological conditions also affect the distribution of geological hazards.Collapses and landslides(including unstable slopes)mainly occur in weak karst hard limestone and dolomite rock formations,which have the characteristics of joint development,good permeability and uneven mechanical properties.Debris flows,on the other hand,mostly occur in the soft siltstone formations with strong weathered argillaceous interbedded interlayers,which usually appear to be loose in structure and easy to weather.With enhanced development degrees of the geological structure,the density of geological hazard spots also increases,indicating that the control effect of geological structure on the development of geological hazards is increasingly significant.

关 键 词：地质灾害隐患 地层岩性 地质构造 耦合性 

分 类 号：P69[天文地球—地质学]