Simple soft rock seepage test system under low stress condition and application method thereof

The invention discloses a simple soft rock seepage test system under a low stress condition and an application method thereof. The system comprises a seepage generating device, a confining pressure loading system, an axial pressure loading system, a water supply system, a stress monitoring system and a seepage flow measuring system; the confining pressure loading system is connected with the confining pressure action end of the seepage generating device, and the axial pressure loading system is connected with the axial pressure action end of the seepage generating device; the water supply system is connected with the water inflow end of the seepage generating device; the stress monitoring system is connected with the confining pressure action end and the axial pressure action end of the seepage generating device; the seepage flow measuring system is connected with the water outflow end of the seepage generating device. When the system is used, the original rock is manufactured into a cylindrical soft rock sam