近几年地面重力调查工作方法技术的一些进展  

Some progress in the working methods of the ground gravity survey techniques in recent years

作　　者：张国利[1] 赵更新[1] 匡海阳[1] 滕菲[1] 苏永军[1] 梁建刚[1] 黄忠峰[1] 

机构地区：[1]天津地质调查中心,天津300170

出　　处：《地球物理学进展》2015年第1期386-390,共5页Progress in Geophysics

基　　金：中国地质调查项目:河北省冀东铁矿外围1:5万重力调查(1212011120920);河北遵化-滦南铁矿整装勘查区1:5万重力调查(12120113059600);舞阳-单县铁矿整装勘查区成矿规律与找矿技术方法研究(1212011306014600)联合资助

摘　　要：近年来随着电子科技的进步,推动着物探仪器水平提高,促进了地面重力调查工作在方法技术上获得一些关键突破.包括GPS-RTK技术、CORS系统的引入,使得重力测点的平面位置与高程测量精度都有了显著提高;激光测距仪、RTK模式在近区地改实测地形中的应用,提高了近区地改的效率和精度.本文通过结合冀东铁矿外围覆盖区的高精度重力调查情况,阐述了在控制点测量、测点GPS高程转换、近区地改和中区地改方面的工作经验,总结了重力调查工作中一些方法技术的进展.With the progress in electronic science and technology in recent years,the level of the geophysical instruments has greatly improved,and then the technique of the ground gravity survey method obtained some key breakthroughs.In particular,the introduction of the GPS-RTK technology and the CORS system improved the measurement accuracy of the plan position of the gravity stations and the elevation,and the application of the laser rangefinder and RTK mode on measuring terrain increased the efficiency and accuracy of the near-station terrain correction.In this paper,through a combination of high-precision gravity survey in the perimeter coverage area of the Jidong iron,the author described the work experience in measuring at the control points,the GPS elevation conversion,the near-station terrain correction,and the median region terrain correction.Finally,the author summed up the advances in the technique of the gravity survey method.

关 键 词：重力调查 近区地改 中区地改 GPS高程转换 

分 类 号：P631[天文地球—地质矿产勘探]