地下水位下降对武汉城市地质环境影响分析  

Analysis on the Impact of Groundwater Level Drop on Urban Geological Environment in Wuhan

作　　者：肖志勇 王胜杰 方志文 XIAO Zhi-yong;WANG Sheng-jie;FANG Zhi-wen(Hubei Prevention Center of Geological Disaster,Wuhan 430034,China;China Jingye Engineering Co.,Ltd.,Beijing 100089,China)

机构地区：[1]湖北省地质灾害防治中心,湖北武汉430034 [2]中国京冶工程技术有限公司,北京100089

出　　处：《云南水力发电》2023年第4期16-21,共6页Yunnan Water Power

摘　　要：为了防范地下水位下降对武汉城市地质环境带来的风险,在分析地质环境背景的基础上,阐明了近年来发生的主要地质环境问题受地下水位下降作用的形成机理。研究发现,地下水位下降对地下水的赋存条件、运移方式和土体结构产生新的改变,形成的地面塌陷以潜蚀-固结-重力致塌模式破坏,地面沉降以消散-固结-沉降变形模式破坏,塌岸以下切-冲蚀-崩塌变形模式破坏。通过多级模糊综合评价法评判表明,地下水位下降与武汉城市地质环境的作用效应较为显著。以此为城市的建设与发展规划提出防范建议。In order to prevent the risk of groundwater table descent to the urban geological environment of Wuhan,this paper analyses the geological environment and clarifies the formation mechanism of the main geological environmental problems occurring in recent years caused by groundwater table descent.The results show that the decline of groundwater level has brought new changes to the occurrence conditions,migration modes and soil structure of groundwater.The ground collapse formed is destroyed by the mode of latent erosion-consolidation-gravity collapse,the ground settlement is destroyed by the mode of dissipation-consolidation-settlement deformation,and the mode of shear-erosion-collapse under the bank collapse is destroyed.The multi-level fuzzy comprehensive evaluation method shows that the effect of groundwater level decline on urban geological environment in Wuhan is significant.It provides precautionary suggestions for city construction and development planning.

关 键 词：地下水位 城市地质环境 地面塌陷 地面沉降 塌岸 模糊综合评价法 

分 类 号：P641[天文地球—地质矿产勘探]