井中三分量磁测误差分析与精度提高方案

The Scheme for Error Analysis and Precision Improvement of Borehole Threecomponent Magnetic Survey System

摘要:

金属矿产勘查“攻深找盲”的开展，使得井中物探工作成为深部找矿的重要方法之一，尤其是井中三分量磁测在勘查磁铁矿等磁性矿产中发挥着较大的作用。但是由于目前井中三分量磁测系统测量精度较低，只能用于寻找磁性较强的矿床，在实际应用中受到一定的限制。为了提高测量精度，该文通过对现有实际测量数据的分析，找出影响系统误差与随机误差的因素，提出井中三分量磁测精度提高的实施方案。

Abstract:

The development of metal mineral exploration “explore deep deposit” made borehole geophysical prospecting become one of the important methods for deep prospecting. Borehole threecomponent magnetic survey play a large role in the exploration of magnetic minerals, such as magnetite. But measurement precision of borehole threecomponent magnetic survey system is very low at present. It can only be used to prospect strong magnetic ore deposits，and is limited in the practical application. In order to improve measurement precision of the borehole threecomponent magnetic survey system，through analysis on the available measurement data，effect factors of system error and random error have been it is found ou，implementation scheme to improve the precision of the borehole threecomponent magnetic survey has been put forward as well.