Comparative study of urban geological work

The paper reviews the developmental course of urban geological w ork in China and abroad and elucidates the general concept of geological work in China's urban economic areas and content of geologi-cal work.Owing to the differences in magnitude,nature,bearing capacity of natural resources and ge olog-ical environment in China's cities,the targets and content of urban ge ological survey and evaluation are somewhat different.As urban geological work is characterized by integration of multiple disciplines,regional peculiarity ,protraction and diversity of work methods,it is advisable to carry out urba n geological work in three aspects,i.e.fundamental geological survey,themati c mapping and comprehensive evaluation and research.The urban geological survey and evaluation involve four themes,i.e.resources exploitation and u-tiliza tion,environment safety,hazard evaluation and information integration.