龙川县地质灾害风险调查及成因影响分析研究

Analysis and Research on Cause and Impact of Geological Disaster Risk Investigation in Longchuan County

由于龙川县田心镇崩塌、滑坡等斜坡地质灾害呈多发态势,地质灾害风险复杂,亟需对灾害隐患点调查治理。基于点、线、面相结合地质灾害精细调查,进行地质灾害隐患情况风险划分,以分析在区域地质条件孕育下的地质灾害时空特征和综合因素成灾机理分析,进而得到该地区单体和区域地质灾害风险评价结果。研究显示,龙川县地质灾害以土质类型为主,受地质构造、地形地貌、岩土体类型、降雨以及人类工程活动等地质环境密切控制,其中人为诱发最为强烈。

Slope geological disasters such as collapses and landslides are prone to occur in Tianxin Town,Longchuan County,and the risk of geological disasters is complex.It is urgent to investigate and manage the hidden danger points of disasters.Based on a detailed investigation of geological hazards combining points,lines,and surfaces,this article conducts a risk classification of geological hazards,in order to analyze the spatiotemporal characteristics and comprehensive factors of geological hazards nurtured by regional geological conditions,and to obtain the risk assessment results of individual and regional geological hazards in the region.The results show that geological disasters in Longchuan County are mainly caused by soil types,which are closely controlled by geological structures,topography,rock and soil types,rainfall,and human engineering activities,among which human induced disasters are the strongest.