MACHANICS MECHANISM AND PROBABILITY ANALYSIS OF BLOCKY ROCKMASS STABILITY IN UNDERGROUND ENGINEERING
Yan Lixin1, Kang Hongpu1, Su Yonghua2
(1Beijing Coal Mining Research Institute,China Coal Research Institute, Beijing 100013 China) (2Chinese University of Geoscience, Beijing 100083 China)?
Abstract When the tectonic pattern and characteristic of rockmass with platy structure meet some conditions,its mechanics mechanism can generally be analyzed by plate and shell theory. Based on the achievement,the stress distribution in rockmass with platy structure is studied for the underground engineering in vertical stratified strata,with length much longer than the height of chamber. According to reliability analysis principle of engineering structure,the equation of stability probability analysis of upright stratified strata and its calculation methods are studied.