COMPREHENSIVE ANALYSIS ON CALCULATION AND MEASUREMENT FOR THE SURROUNDING ROCK PRESSURE IN SHIJI VERTICAL SHAFT
石集立井围岩压力计算与量测综合分析

It is supposed that the surrounding rock fracture in vertical shaft is tube shaped and divided into several parts with equal straight section and tendency of slipping downward. The positive stress on outside boundary of the tube shaped fracture rockmass is considered as the pressure acting on the shaft wall from surrounding rock, and called surrounding rock pressure. The calculated results are compared with measured ones, and they are coincided very well. Based on the theory, a method is presented to determine the surrounding rock pressure of vertical shaft in Shiji mining area or the areas with similar geological conditions.