摘要
黄冈市位于大别山南麓,区内地质灾害突发频发。在收集已有资料的基础上,基于黄冈市地质环境条件,综合分析了地质灾害的类型、分布及发育特征。由此得出,滑坡是黄冈市主要地质灾害类型,数量占比80%,规模以小型为主,物质组成包括土质、岩质及混合质,运动形式以牵引式为主,造成滑坡的主要因素为早期的人类工程活动,直接诱发因素为持续强降雨。通过滑动面破坏模式对滑坡孕灾机理进行了分类,认为区内滑坡破坏模式主要有覆盖层内局部剪切破坏、岩土分界面滑移破坏、基岩中软弱结构面滑移破坏三种。本研究既从宏观上总结分析了区域地质灾害特征,又从微观角度论证了滑坡成灾机理,其成果可为指导该地区科学防灾、精准预警及工程设计提供参考。
The Huanggang area is located at the southern foot of the Dabie Mountains,and geological disasters occur frequently.On the basis of collecting existing data,this article comprehensively analyzes the types,distribution characteristics,and development characteristics of geological disasters based on the geological environment conditions in Huanggang area.From this,it can be concluded that landslides are the main type of geological hazard in the Huanggang area,accounting for 80%of the total number.The scale is mainly small,and the material composition includes soil,rock,and mixed materials.The movement mode is mainly traction type,and the main factor causing landslides is early human engineering activities,and the direct triggering factor is continuous heavy rainfall.The mechanism of landslide disaster was classified through the failure mode of sliding surface.It is considered that the failure modes of landslide in this area are mainly local shear failure in overburden,sliding failure at rock-soil interface and sliding failure of weak structural plane in bedrock.This study not only summarizes and analyzes the characteristics of geological disasters from a macro perspective,but also demonstrates their mechanisms from a micro perspective.The research results have strong reference for guiding scientific disaster prevention,accurate warning,and engineering design in the region.
作者
王超
邹浩
毛帅
陈慧娟
朱文慧
蔡恒昊
Wang Chao;Zou Hao;Mao Shuai;Chen Huijuan;Zhu Wenhui;Cai Henghao(Hubei Key Laboratory of Resources and Eco-environment Geology,Wuhan,Hubei 430034;Third Geoloical Brigade of Hubei Geological Bureau,Huanggang,Hubei 438000;Northeast Hubei Regional Geological Disaster Prevention and Control Research Center,Huanggang,Hubei 438000)
出处
《资源环境与工程》
2023年第6期757-765,共9页
Resources Environment & Engineering
基金
湖北省地质局科技项目“鄂东堆积层滑坡自动化监测数据挖掘方法与阈值分析”(KJ2023-24)。
关键词
地质灾害
灾害类型
滑坡模型
黄冈市
geological disasters
disaster type
landslide model
Huanggang City
