Abstract:In the past 20 years, accompanying with the economic growth and the aggravation of population pressure, urban buildings are getting higher and higher, foundation pit excavation is getting deeper and deeper, a large number of pile foundation construction inevitably has an impact on groundwater supply, runoff and discharge conditions, and the change of hydrogeological conditions in turn affects human activities and even causes geological disasters. In this paper, taking a small area of Ji'nan city as an example, through hydrogeological investigation, field drilling, comprehensive analysis and other means, the reasons for the rise of groundwater level around the area and the characteristics of the change of hydrogeological conditions in recent years have been studied and analyzed. It is showed that, due to the influence of human activities, hydrogeological conditions around the community have changed greatly, and the original runoff discharge area around the community has gradually changed into a small "water storage area". Thus, a large rise in the groundwater level around the community can be caused, and a negative impact has been produced on the construction products. The research results have certain guiding significance for the later treatment of the community structure, the development of surrounding blocks and similar engineering hydrogeological problems.
