Artificial core for simulating rock erosion process and preparation method thereof

The invention relates to an artificial core for simulating rock erosion process and a preparation method thereof. The permeability of the artificial core used for simulating a rock erosion experiment is reduced due to damage under the effect of various fluids only, and only the negative effect when human activities act on underground environment can be simulated. A grouting agent and a hard skeleton are uniformly mixed to form mortar which is thoroughly wet but cannot flow, and soluble particles are added before a mold is put for formation; the mortar mixed with the soluble particles is put in the mold, the pressure environment is controlled to be 10-15 MPa, the duration time is 24h, the core is taken out after being formed in the mold, the core is put in a room temperature environment for curing for 48h, and the obtained core is a target product. According to the core prepared by the method, the rock erosion experiment can be simulated under a relatively mild environment, and the increment of permeability can be observed when the time is smaller than 10h, so that the long erosion process under a natural environment is quickly presented in a laboratory.