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Abstract A new numerical method simulating the support of partially grouted bolts with pre-tightening force was proposed on the previous researches of indirect boundary element method of 3D-FSM?DDM. According to that the displacement difference between the two ends of the bolt hole is the same as the deformation of anchor bolt at the relative section from the axis direction，the induced displacement equations about the bolt hole and the bolt were established. With the stress equilibrium equations in the original system，all the unknown quantities about the fictitious stresses can be solved. Finally，the stress，displacement and stability at an arbitrary point of rock around roadway can be computed. The correctness of the method was proved by comparing with the numerical simulation results with FLAC3D. The numerical simulation system of boundary element developed can be widely applied in the stability analysis of large scale geotechnical engineering such as mine，tunnel，etc.
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2016, Vol. 35 
