Lossless accurate measuring device for rock self-imbibition saturated interface

The utility model discloses a lossless accurate measuring device for a rock self-imbibition saturated interface. The device comprises a water storage tank, a water storage tank sealing cover, a vacuum valve, an acoustic emission scanning bin, an acoustic emission scanning bin data transmission connector, an acoustic emission scanning bin top cover, an acoustic emission scanning bin top cover vent hole, a sample bin, a sample water-permeable support, an annular acoustic emission sensor, an upper acoustic emission sensor, a lower acoustic emission sensor, an acoustic emission sensor moving screw and a guide pipe. And a water balance valve and a base. Signal transmission of the circumferential acoustic emission sensor, the upper acoustic emission sensor, the lower acoustic emission sensor and the acoustic emission sensor moving screw rod is connected with a data processing PCB mainboard in the base through an acoustic emission scanning bin data transmission connector, and is connected with a computer host and a