Abstract:Pressure gauge is usually used directly to measure pore water pressure when studying the seepage behavior of water in the soil. The gauge actually measures both pore pressure and pore pressure. It is usually assumed that the pore pressure in the soil body is 0kPa, so the effect of pore pressure is not considered in general. However, according to recent studies, it is believed that the rise of pore pressure in the soil body may have an impact on slope destruction and rainwater infiltration during rainfall. Therefore, in this study, in order to master the pore pressure under different conditions (rainfall, groundwater, and exhaust), the pore pressure measurement test in the soil body under the condition of rainwater infiltration was carried out. The results show that the pore pressure in the soil will rise due to the waterlogging state, which indicates that it is very necessary to measure pore pressure during rainfall. The research results provide a theoretical basis for the long-term operation, monitoring, and warning of the abandoned soil slope.