核磁共振探水在矿井超前地质预报的试验研究

Experimental Study of Nuclear Magnetic Resonance Water Exploration in Advance Mine Geological Prediction

针对矿井掘进巷道前方含水构造有效探测问题,提出了采用核磁共振测深方法进行矿井巷道超前地质预报。设计了多匝小回线测量装置,通过在矿井掘进巷道中探测试验,结果显示,矿井巷道核磁共振超前探测时含水体能够产生较明显的核磁共振信号,但受井下大功率电器影响,信号较弱。为该技术应用于煤矿掘进巷道超前探测提供了一种新的物理方法。

Aiming at the problem of effective detection of water-bearing structures in front of roadway,a method of nuclear magnetic resonance sounding is proposed to predict the advance of mine roadway.Based on the method of finding the water by ground NMR and the condition of roadway in mine, a multi-turn small loop measurement device was designed. Through the test in mine roadway, the results show that water body can produce obviously nuclear magnetic resonance signals, but by the underground power appliances, the signal is weak. It provides a new physical method for this technology to use advanced detection of coal tunneling and tunnel front face.