城市区域物探的社会经济效益和新一轮目标的探讨

“六五”期间,特别是1984年国务院决定开放十四个沿海港口城市以来的两年中,完成近40个大中城市以航磁、重力和电测深等传统物探方法为主的,比例尺为1:5万级的区域物探扫面,为基础地质、工程地质、地下水和地热资源调查提供了基础资料,取得了显著的社会经济效益.为适应近代城市建设的广泛而多方面需求,提出了新一轮城市区域物探工作内容、方法和程序的目标,其中包括地震烈度小区划,断层活动性调查,地基岩土力学分层与区划,基岩裂隙水和隐伏地热区域调查.新一轮城市区域物探工作内容、方法和程序的发展,将进一步提高城市区域物探工作水平和社会经济效益.

SOCIAL AND ECONOMIC BENEFIT OF URBAN REGIONAL GEOPHYSICAL PROSPECTING AND A PRELIMINARY DISCUSSION ON A NEW ROUND OF OBJECTIVES

During the sixth five-year-plan period, especially since the opening to the world of 14 coastal ports as decided by the State Council in 1984, 1:50,000 re gional geophysical survey has been conducted for 38 large or medium-sized ci ties with the help of such traditional geophysical techniques as aeromagnetic survey, gravity survey and electrical sounding. The results provide data of esse ntial importance for basic geology, engineering geology as well as investigationof underground water and geothermal resources, showing remarkable social and economic benefit. For the purpose of adapting geophysical work to extensive and many-sided requirements of modern urban construction, the author proposes in this paper the substance, methods and procedure for a new round of urban geo physical prospecting, which include seismic intensity zoning, investigation of fault activity, layering and regionalization for rock-soil mechanics of ground, regional survey of bed rock, fracture water and concealed geothermal areas. The develop ment of a new round of urban regional geophysical prospecting in its substance, methods and procedure will undoubtedly raise the urban regional geophysical prospecting and its social and economic benefit to a new level.