Abstract: A simulator for updating a geo-mechanical numerical reservoir model in response to changes in a subterranean environment includes receiving stimulation data representing a reservoir stimulation event of a reservoir, the reservoir represented by a structural model. The simulator simulates the reservoir stimulation event using the stimulation data to update the structural model. During execution of a reservoir simulation of the reservoir, the simulator determines that the simulation event of the reservoir is encountered and pause the simulation, receives the updated structural model of the reservoir, reduces a size of time-steps of the simulation, and resumes execution of the reservoir simulation using the updated structural model to generate simulation output data. The simulator stores the simulation output data for downstream applications.