Elastic wave and tensile damage testing system of rock coupled with seepage in deep earth complex environment

A direct tensile and acoustic testing machine under rock seepage, comprising a sample and a support frame,

• wherein a top of the support frame is fixed with a top plate, a bearing plate is provided above the top plate, the bearing plate is provided with a plurality of vertical force transferring rods, the plurality of vertical force transferring rods vertically penetrate through the top plate and are in a sliding fit with the top plate and are affixed to a tensile base, a top of the tensile base is provided with a lower clamp holder, a bottom of the top plate is provided with an upper clamp holder, and a clamp center of the upper clamp holder overlaps with a clamp center of the lower clamp holder;
• an upper channel is provided inside the upper clamp holder, one end of the upper channel is communicated with the outside, the other end is provided with an acoustic transmitting probe, and a transmitting direction of the acoustic transmitting probe is downward;
• and
• a lower channel is provided inside the lower clamp holder, one end of the lower channel is communicated with the outside, the other end is provided with an acoustic receiving probe, and the acoustic receiving probe is configured to receive an acoustic wave from the acoustic transmitting probe;
• an upper end of the sample is affixed to the upper clamp holder, an upper end face of the sample is provided with a seepage outflow hole, a seepage outflow channel is provided inside the upper clamp holder, one end of the seepage outflow channel is connected with the seepage outflow hole, and the other end is communicated with the outside;
• a lower end of the sample is affixed to the lower clamp holder, a lower end face of the sample is provided with a seepage inflow hole, a seepage entry channel is provided inside the lower clamp holder, and one end of the seepage entry channel is connected with the seepage inflow hole, and the other end is communicated with the outside, and
• wherein an upper horn-shaped sealing sleeve is provided between the acoustic transmitting probe and an inner wall of the upper channel, and a lower horn-shaped sealing sleeve is provided between the acoustic receiving probe and an inner wall of the lower channel.