A Review of Urban Geology

Urban geology mainly deals with issues of 3D geological conditions,geo-hazards and environmental pollution in cities.(1) Drilling and geophysical techniques are used to obtain detailed 3D geological data,build full urban databases and further set up 3D models.(2)Remote sensing,geological and geophysical techniques are utilized to draw maps of distribution of urban geo-hazards,and risk evaluation methods are introduced to predict future geo-hazards.(3)Based on geochemical survey and conditional monitoring for many kinds of geological marks,risk evaluation can be used to predict future trend of urban environmental pollution.All results of urban geological survey should be digitalized and visualized to be available for more potential clients,and make a better service for urban planning,land use and development.