Test system of rock mass for seepage coupling and permeability testing under deep complex conditions

A test system of a rock mass for seepage coupling and permeability testing under deep complex conditions, comprising:

• a seepage medium supply module, a seepage coupling module, a transient method test module, and a steady-state method test module, wherein
• the seepage medium supply module is configured to provide a seepage medium to the test system, and the seepage medium is a liquid or a gas;
• the seepage coupling module is a rock mechanics testing machine;
• the rock mechanics testing machine comprises a triaxial chamber;
• and the triaxial chamber comprises a top end provided with a seepage medium inlet and a bottom end provided with a seepage medium outlet;
• the transient method test module comprises an upstream branch pipe, a first pressure sensor, a first pressure chamber, a downstream branch pipe, a second pressure sensor, a second pressure chamber, and a pressure difference sensor;
• the upstream branch pipe comprises an inlet end connected to a seepage medium outlet of the seepage medium supply module and an outlet end connected to the seepage medium inlet of the triaxial chamber;
• the first pressure chamber is connected to the upstream branch pipe through a first pressure branch pipe;
• and the first pressure sensor is connected to a connecting path between the upstream branch pipe and the first pressure chamber, and is configured to detect a pressure of the upstream branch pipe;
• the downstream branch pipe comprises an inlet end connected to the seepage medium outlet of the seepage medium supply module and an outlet end connected to the seepage medium outlet of the triaxial chamber;
• the second pressure chamber is connected to the downstream branch pipe through a second pressure branch pipe;
• and the second pressure sensor is connected to a connecting path between the downstream branch pipe and the second pressure chamber, and is configured to detect a pressure of the downstream branch pipe;
• the pressure difference sensor is disposed between the upstream branch pipe and the downstream branch pipe, and is configured to detect a pressure difference between the upstream branch pipe and the downstream branch pipe;
• a heating and pressure stabilizing module is disposed between the seepage medium supply module and the transient method test module;
• and the heating and pressure stabilizing module comprises a first temperature sensor, a heater, a thirteenth shut-off valve, a pressure stabilizer, a second pressure reducing valve, and a second temperature sensor successively connected in series on a medium flow path;
• a drying module and a fourteenth shut-off valve are disposed between the seepage medium supply module and the heating and pressure stabilizing module;
• the drying module and the fourteenth shut-off valve are connected in parallel on the medium flow path;
• the drying module comprises a dryer;
• a fourth shut-off valve is disposed between an inlet end of the dryer and the seepage medium outlet of the seepage medium supply module;
• and a fifth shut-off valve is disposed between an outlet end of the dryer and a medium inlet of the heating and pressure stabilizing module;
• and
• the steady-state method test module is connected to the downstream branch pipe, and is configured to test a fluid flow rate at the seepage medium outlet of the triaxial chamber.