CAJ | 학술논문

利用瞬变电磁法勘察采空区,当存在较强电磁干扰时,常规测量方式无法取得准确的测量数据.在北京房山区采空区勘查中,使用了一种具有抗干扰能力强的"8"字型测量方式,取得了较好的效果.通过剖面勘查以及相应的时间域电阻率成像资料处理法,获得了较高分辨率的电阻率剖面,推断出了采空区的空间分布特征,为在强干扰区勘查采空区提供了一种新的技术方法,也为治理和防止地面塌陷的进一步发生提供了科学依据.
이용순변전자법감찰채공구,당존재교강전자간우시,상규측량방식무법취득준학적측량수거.재북경방산구채공구감사중,사용료일충구유항간우능력강적"8"자형측량방식,취득료교호적효과.통과부면감사이급상응적시간역전조솔성상자료처리법,획득료교고분변솔적전조솔부면,추단출료채공구적공간분포특정,위재강간우구감사채공구제공료일충신적기술방법,야위치리화방지지면탑함적진일보발생제공료과학의거.
The transient electromagnetic method is an effective method for detecting the distribution extent and characteristics of the mined-out area. Nevertheless, the measured data cannot be obtained accurately by common measurement mode of the transient electromagnetic method where there exists high electromagnetic interference. This paper introduces a "8"-shaped grapheme measurement mode with strong anti-interference capability, with which a better mined-out area prospecting result was obtained in Fangshan District of Beijing. High resolution resistivity profile was got through profile prospecting and corresponding time domain resistivity imaging data processing. The distribution extent and characteristics of the mined-out area were also deduced. It is thus thought that this method can provide a new means for high electromagnetic interference mined-out area prospecting and the scientific basis for tackling and preventing land collapse aggravation.