Nuclear magnetic resonance detection device and method for advanced detection of water bodies in front

Abstract

The invention relates to a nuclear magnetic resonance detection device and a nuclear magnetic resonance detection method for the advanced detection of a water bodies in the front. In the device, a computer is connected with a system controller, a high-power power supply and a signal acquisition unit by a serial port bus respectively; and the system controller is formed by connecting a bridge circuit driver, a high-power H-shaped transmitting bridge circuit, a resonant capacitor and a transmitting coil. Compared with the prior art, the device can detect important information such as the existence of water-bearing bodies in the front, the water content of the water-bearing bodies and the like accurately and effectively. The occupied area of the coil is reduced effectively by a mode of arranging the coil vertically, so that the device can perform exploration in narrow space. The device can detect the underground geological condition within a certain distance in the front directly and accurately in production fields of coal fields and mines or construction sites of tunnels so as to reduce mine accidents caused by geological disasters such as water burst, mud gushing and the like due to unclear geological conditions in the front or various incidents caused by the geological disasters in the process of tunnel construction.

Description

Technical field: [0001] The invention relates to a geophysical prospecting device for detecting water bodies by using nuclear magnetic resonance, in particular to a nuclear magnetic resonance detection device and a detection method for advanced detection of water bodies in front by using vertical coils. Background technique: [0002] In underground engineering, especially in large-scale underground excavation projects such as tunnels and mines, due to complex geological conditions, geological disasters such as water inrush and mud gushing caused by groundwater occur from time to time, which brings huge disasters and inestimable consequences to construction safety. economic loss. How to accurately and effectively detect the water-bearing body in front of the underground engineering has become an important research direction in geophysical exploration methods. [0003] CN201037869 discloses a "passive roadway / tunnel advance detector", which is composed of two signal collector...

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Problems solved by technology

The above-mentioned invention is only applicable to the detection of underground water bodies on the

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