STUDY ON TENDENCY ANALYSIS OF ROCKBURST AND COMPREHENSIVE PREDICTION OF DIFFERENT TYPES OF SURROUNDING ROCK
In the view of one-sidedness and the limitations in assumptions and criteria for rockburst prediction, the potential conditions of rockburst induced by deep mining of the Beiminghe iron mine are analysed from the in-situ stress field, rock strength and elastic strain energy. Multi-index rockburst tendency for different types of surrounding rocks in deep mining such as tangential stress index(T), rock brittleness index(B), elastic energy index(Wet) and impact energy index(Acf) are analyzed by using the rock mechanics test and finite element numerical analysis. Based on the multi-indexes, fuzzy mathematics is applied for comprehensive prediction of rockburst. Prediction results show that there is no rockburst tendency for limestone and skam, a moderate rockburst tendency for iron ore and a strong rockburst tendency for diorite in the process of deep mining. Finally, prevention and control measures of rockburst are taken from both sides of human disturbance and stress field to guarantee safe mining.
LI-XIN ZHANG CHANG-HONG LI
Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, P.R China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1451-1456
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）