Abstract:A continuity model of engineering rock masses is built and the schematization method of engineering rock continuity reported. This method applies to the judgement of every kind of mechanics medium. On the basis of the method , a new way of determining the mechanical parameters of engineering rock masses is further present2 ed. Numerical simulation is used here , combining the experimental parameters of intact rock with the st ructural properties of field rock. The experimental result s of orthogonal2jointed rock are given , and one bright future of ap2 plication of this method to the engineering practice is demonst rated.