关键词: 埋藏地貌

Abstract: Urbanism is the inevitable consequence of industrialization In recent years, the construction of urban fundamental installation has been emphasized in our country. Since the land resource is limited in our country, it is necessary to make full use of land space and proceed multiple-layer construction and reconstruction under ground. Therefore, it is. essential to drill deep-surveying hole for engineering geoiogy and make a thorough investigation of underground engineering,geoiogic conditions such ae geological structue,geom-orphologic type, the distribution of rock formation, soil horizon and so on. These will be the important technical basis in making a design and engineering plan. with the increasing amount of data of deep dills in urban area, it becomes possible to study buried landform.The engineers and college geologists in Nanjing have cooperatively achieved a lot in studying buried landform.The significance of studying buried landform is:Firstly and chiefly, to enrich regional engineering geology data, to choose appropriate construction site and improve the quality of design and con-struclion.In Nanjing urban area, the basically surveyed buried landforms includethree grades of terrace(3-5 meters, -20--22meters) and lots of palaeo-rivers and paleaogullies.These scientific and technical materials can make the fundamental installation projects effective to stifle possible danger in the cradle;Secondly, to be useful to work out urban an thearthquake measures;Thirdly, to provide leads for improving urban water supple and carrying on euviron mental proteetion;Fourthly, to make reference to select the underground station.Finally, to furish imporiant eyidence for studying palaenelimate, the law of sea level fluctuation and the nature of neotectonies and so on.

Key words: Buried Land form