烟台市地质灾害与岩土体类型相关性分析

根据最新一轮地质灾害排查结果,烟台市共发育471处地质灾害隐患点,主要类型包括崩塌、滑坡、泥石流、采空塌陷和岩溶塌陷。该文以烟台市地质环境背景和岩土体类型特征为基础,通过对471处地质灾害隐患点进行统计,首先从地质灾害发育数量和发育密度2个方面分析了烟台市地质灾害在各类岩土体类型中的分布特征,然后重点分析了崩塌、滑坡、泥石流、采空塌陷和岩溶塌陷地质灾害与岩土体类型的关系,分析结果表明,崩塌、滑坡、泥石流主要分布在层状变质岩组中,采空塌陷主要分布在侵入岩岩组中,岩溶塌陷发育区土体结构主要为上部第四系松散土体、下部灰岩或大理岩的二元结构。依据地质灾害与岩土体类型相关性分析,可以有针对性地开展地质灾害易发性分区和监测预警工作。

Correlation Analysis between Geological Hazards and Rock Soil Mass Types in Yantai City

According to the latest survey results of geological hazards, 471 potential geological hazard sites have been found in Yantai city, including collapse, landslide, debris flow, mining subsidence and karst collapse. Based on the background of geological hazards and the characteristics of rock soil mass types, through statistics of 471 hidden danger points of geological hazards, from the aspect of the number and density of geological hazards in different types of rock soil mass, the distribution characteristics of geological hazards have been analyzed. The relationship between geological hazards and the types of rock soil mass has been emphatically studied. It is showed that collapses, landslides and debris flows are mainly distributed in layered metamorphic rock formations, mining subsidence are distributed in intrusive rock formations, the type of rock soil mass structure in karst collapse development area is mainly Quaternary loose soil in the upper part, limestone in the lower part or binary structure of marble. According to the analysis on the correlation between geological hazards and the type of rock soil mass, geological hazards susceptibility zoning, monitoring and early warning can be carried out in a targeted way.