The elimination of the whole airspace effect: Principle, apparatus and application example
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摘要: 如何消除"全空域效应"是电磁勘探中的难题,国内外学者试图从基础理论、数据处理、测线布设等方面入手来解决,但存在求解条件苛刻、计算繁杂、技术实现困难、成本高等问题.文中提出了用屏蔽装置直接消除全空域效应以逼近地面式测量的新思路,研制了相应的装置,给出了使用方法和应用实例,取得了良好的实践效果.Abstract: The elimination of'whole airspace effect'is a difficult problem in electromagnetic exploration.Experts both in China and abroad have tried to solve this problem from such aspects as basic principle, data-processing and traverse employment;nevertheless, there exist problems like harsh condition for seeking solution, complicated calculation, difficulty in realizing technical aim and high cost.This paper puts forward a new train of thought in which shielding apparatus is employed to directly eliminate the whole airspace effect so as to approach ground-style survey.The corresponding device is developed, and the application method and examples are given.Practice shows that the result is satisfactory.
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