聊城市20m以浅地下空间开发地质问题分析

The Geological problems analysis of underground space within 20 meters deep in Liaocheng City

当前聊城市地下空间开发利用程度较低,随着城市化进程的不断发展,其对地下空间的需求日趋明显。本文从地下水水位、水质、软土、砂性土及土质腐蚀性等方面出发,分析了影响聊城市地下空间开发的主要地质问题。软土、砂性土的地基液化及承压水突涌、水土腐蚀等工程地质问题因素对聊城市20m以浅的地下空间开发影响不大,影响其地下空间开发的其主要地质问题为地下水引起的流砂、边坡失稳、地基承载力下降、土体位移等问题及砂性土引发的流砂与管涌问题。通过对聊城市20m以浅地下空间开发的主要地质问题分析,为今后城市地下工程选址及建设提供基础依据。

At present, the development and utilization degree of underground space inLiaocheng City is low. With the development of the urbanization process, the demands of underground space become obvious day by day. The main influence factors of development of underground space which is within 20meters are quick sand, slope instability, foundation bearing capacity decline, soil displacement caused by underground water , and the quick sand and piping of sandy soil caused by sand soil. The engineering geological problems which includemollisol and sandy soil, heave-piping of confined groundwater and water and soil erosion turn out to be small. The Geological analysis of underground space within 20meters offers foundation basis for site selection and construction during the process of urban development in future.