烟台市地质灾害发育现状及影响因素分析

2016年山东省开展各市地质灾害排查工作,烟台市作为地质灾害较发育区,是该次排查重点工作区之一。该文以现状调查为基础,查明了烟台市共发育471处地质灾害隐患点,地质灾害规模以小型为主,主要类型为崩塌、滑坡、泥石流、采空塌陷和岩溶塌陷,其中崩塌隐患点占地质灾害总数的68%,数量最多,其次为泥石流和采空塌陷,各占总数的15%和14%,滑坡数量最少,仅占总数的1%,并介绍了各类地质灾害分布特征。在此基础上,对地质灾害的主要影响因素——地形地貌、岩土体类型、地质构造、降水和人类工程活动等进行了分析。最后提出了在进行工程建设活动的同时重视其引发的地质灾害问题,以减少和预防其带来的次生地质灾害。

Analysis on Present Condition and Influening Factors of Geological Disaster in Yantai City

Geological disaster investigation work in different cities has been carried out by Shandong Department of Land and Resources in 2016. As a geological disaster developing area, Yantai city is one of the key work areas of this investigation. Based on present investigation, 471 hidden danger points of geological disasters developed in Yantai city have been identified. It is found that geological disasters are mostly small scales, and main types are collapse, landslide, debris flow, mining subsidence and karst collapse. The hidden danger points of collapse account for 68% of geological disasters, mudslides and mining-out collapse account for 15% and 14% respectively, and landslide accounts for only 1%. The characteristics of geological disasters in Yantai city have been explained as well. On these basis, main influencing factors of geological disasters, such as topography and landform, rock and soil type, geological structure, precipitation and human engineering activities have been analyzed. Geological disasters caused by engineering construction have been pointed out in order to reduce and prevent the secondary geological disasters.