Core Jamin effect evaluation experiment system

The utility model discloses a rock core Jamin effect evaluation experiment system. The rock core Jamin effect evaluation experiment system comprises a rock core holder, a gas-water mixer, a water supply assembly, a gas supply assembly and a pressure return assembly, the water supply assembly and the gas supply assembly are respectively communicated with an inlet of the gas-water mixer; an outlet of the gas-water mixer is communicated with an inlet of the core holder; the back pressure assembly is communicated with an outlet of the core holder; the gas supply assembly comprises a first gas supply branch and a second gas supply branch, and the first gas supply branch and the second gas supply branch are communicated with an inlet of the gas-water mixer. According to the embodiment, the water supply assembly, the two branch gas supply assemblies, the gas-liquid mixer, the gas flowmeter and the check valve are additionally arranged, so that accurate metering is achieved, the problem of liquid-gas returning when t