Abstract：Dissolving process of salt rock crack is theoretically simplified according to the dissolution mechanism of salt rock；and coupled penetrating-dissolving model for salt rock crack is then set up by taking salt rock crack dissolution，permeability variation，and their interaction into consideration simultaneously. Experiment on coupled penetrating-dissolving process of salt rock crack is performed under certain conditions using the device for coupled penetrating-dissolving test for salt rock crack designed by the authors；and the coupled penetrating- dissolving model is used to model the dissolving process under the same conditions. The computational results agree well with those obtained by experiment. The achieved results can provide an important foundation for the theoretical and experimental aspects of further analyses of coupled mechanical，penetrating，and dissolving mechanism of salt rock.
