【摘要】：地巷聯(lián)合瞬變電磁法采用地面回線源發(fā)射、煤礦井下巷道中接收的工作方式,對(duì)提高分辨率具有理論優(yōu)勢(shì)。為論證該方法在煤礦巷道中實(shí)際應(yīng)用的可行性,從理論計(jì)算和現(xiàn)場(chǎng)試驗(yàn)兩方面對(duì)感應(yīng)二次場(chǎng)的信號(hào)特征、有效長(zhǎng)度、異常響應(yīng)進(jìn)行研究。理論計(jì)算表明,井下信號(hào)曲線為低高低的特征,早期信號(hào)相對(duì)弱但晚期信號(hào)強(qiáng)于地面�，F(xiàn)場(chǎng)試驗(yàn)證明,雖然電磁干擾源較多,但仍采集到長(zhǎng)度超過(guò)20 ms的光滑信號(hào),且曲線特征與理論結(jié)果一致。實(shí)測(cè)測(cè)道曲線上隆起的異常段與已知積水采空區(qū)位置基本一致,證明地巷聯(lián)合瞬變電磁法具有實(shí)際應(yīng)用的可行性。
[Abstract]:The ground roadway combined with transient electromagnetic method uses the ground return line source to emit and the working mode to receive in the underground roadway of coal mine, which has the theoretical advantage to improve the resolution. In order to prove the feasibility of the practical application of this method in coal mine roadway, the signal characteristics, effective length and abnormal response of the induction secondary field are studied from two aspects of theoretical calculation and field test. The theoretical calculation shows that the downhole signal curve is low and the early signal is weak but the late signal is stronger than the ground signal. The field tests show that although there are many electromagnetic interference sources, the smooth signals over 20 ms in length are still collected, and the characteristics of the curves are in agreement with the theoretical results. The abnormal section of the uplift on the measured track curve is basically consistent with the position of the known goaf, which proves that the combined transient electromagnetic method of roadway is feasible in practical application.
【作者單位】： 中國(guó)地質(zhì)大學(xué)(武漢)地球物理與空間信息學(xué)院;中煤科工集團(tuán)西安研究院有限公司;
【分類(lèi)號(hào)】：TD82;P631.325

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 曾向林;瞬變電磁法在工程地球物理勘探中的應(yīng)用[J];西部探礦工程;2001年03期

2 雷達(dá);瞬變電磁法數(shù)據(jù)提取純異常方法技術(shù)[J];物探與化探;2004年04期

3 陳衛(wèi);楊生;王有霖;劉濤;;時(shí)間域瞬變電磁法在地質(zhì)勘查中的應(yīng)用[J];礦產(chǎn)與地質(zhì);2006年Z1期

4 薛國(guó)強(qiáng);李貅;底青云;;瞬變電磁法理論與應(yīng)用研究進(jìn)展[J];地球物理學(xué)進(jìn)展;2007年04期

5 王春耀;尹尚先;凌標(biāo)燦;楊武洋;李永軍;劉德民;;時(shí)間域瞬變電磁法井下全方位賦水性探查研究[J];華北科技學(xué)院學(xué)報(bào);2007年04期

6 劉江;;復(fù)雜地形瞬變電磁法應(yīng)用技術(shù)研究[J];陜西煤炭;2009年06期

7 陳載林;黃臨平;陳玉梁;;我國(guó)瞬變電磁法應(yīng)用綜述[J];鈾礦地質(zhì);2010年01期

8 楊金偉;郭金風(fēng);;瞬變電磁法在煤礦井下探測(cè)中的應(yīng)用[J];科技創(chuàng)新導(dǎo)報(bào);2010年11期

9 熊濤;;探究瞬變電磁法的應(yīng)用[J];知識(shí)經(jīng)濟(jì);2010年14期

10 蘇林;劉鑫明;劉q，

本文編號(hào)：2250245