电性源瞬变电磁短偏移探测方法

摘要

为了解决大深度、高分辨探测地下矿产资源的难点问题，基于近区测深的优越性，提出一种电性源短偏移瞬变电磁装置(SOTEM)，并对该装置下的探测技术进行研究。通过对时间域近场响应特性以及探测深度等面探测能力的分析，认为SOTEM明显优于长偏移瞬变电磁(LOTEM)。接地线源短偏移瞬变电磁法比回线源瞬变电磁法易于施工，且探测深度较大和探测精度相对较高，是一种值得推广的方法。%In order to solve the problem of detecting of underground deep ore target with high-resolution, based on the advantage of near field survey, a new configuration named as wire-source with short-offset TEM (SOTEM) was proposed for deep detection and the detecting technique was studied. After analyzing the detection ability of this system, such as time-domain response, as well as detecting depth, the conclusion can be drawn that this kind of configuration has more merit than long-offset TEM(LOTEM). The proposed method is easier to operate and can be used to obtain larger detecting depth and higher detecting accurate. It also shows that SHOTEM is a kind of method worth to be developed.