Abstract：Aiming to some new variables which characterize the stability of surrounding rock existing some problems such as the large amount of data and trivial process, taking a mine as the engineering background, this paper expounds a fast implementation method and process of new variables based on VB programming.The broken rock zone, broken degree of surrounding rock, and the deflecting law of principal stress in disturbed stress were analyzed. The results show: (1) the processing speed of new variables was greatly enhanced by a secondary handler, and that the error rate of manual batching calculation was reduced; (2) the range of plastic zone of point safety factor was roughly same as that of conventional plastic zone, and the point safety factor of surrounding rock reflected that the range of plastic zone in roadway floor was greater than that in the roadway roof and two sides; (3) in disturbance stress, the maximum principal stress in roadway two sides was vertical stress, and such principal stress in both roadway roof and floor was horizontal stress paralleled to the roadway radial. The research results can provide similar new ideas and methods for the rapid implementation of similar new variables.

Keyword：stability of surrounding rock;point safety factor;disturbed principal stress;