STABILITY ANALYSIS OF THE SURROUNDING ROCK IN DEEP SHAFT

The purpose of this paper is to find the information of the stress change of surrounding rock when ground stress is redistributed after rock is duged in deep shaft. On the basis of above result, the stability of surroundung rock are analysized by the strength rule and deformation standard, then theories foundation is provided for whether temporary support is needed. In this paper, the axial symmetry of mechanics of elastic bodies, the principle of stress concentration and Ku Lun-Naiwel strength rule is used. The research result may be as the basis of the design of shaft costruction in rock range and the basis of the establishment of speediness driving.