Surface nuclear magnetic resonance system excited by geoelectric field for groundwater detection and field detection method

A surface nuclear magnetic resonance system excited by a geoelectric field, comprising:

• a transmitter;
• receivers;
• receiving coils;
• a computer;
• and
• a synchronization module, wherein
• the receivers comprise a first receiver, a second receiver, a third receiver, a fourth receiver, a fifth receiver and a sixth receiver,
• the computer is connected to the synchronization module via the transmitter,
• the transmitter is connected to a first electrode and a second electrode via a transmission line,
• the receiving coils are symmetrically arranged on two sides of the transmission line connecting the first electrode and the second electrode, each of the receivers is mounted with two of the receiving coils,
• the computer is connected to the fourth receiver via the first receiver, the second receiver, the third receiver, the sixth receiver and the fifth receiver, and
• the synchronization module is connected to the first receiver, the fourth receiver, the second receiver, the fifth receiver, the third receiver and the sixth receiver.