NUMERICAL SIMULATION AND ANALYSIS OF THE STABILITY OF SUBLEVEL CAVING WITHOUT FLOOR PILLAR LARGE CROSS-SECTION DRIFT
The study of the stability of a tunnel when its cross-section is enlarged that meets the demand of a large cross-section for extracting ore, but is also safe for mining, is the subject for this paper. The use of rock failure process analysis code (RFPA2D) simulation is used to analyse the stability of sublevel caving without floor pillars and several large cross-section drifts. The primary stress, displacement and failure zone of these kinds of cross-section of tunnel is calculated. The conclusion is that the tunnel is safe when its cross-section is 6.5m×3.0m and it is 1.5m over the lower wall. This gives some references for the operations of underground mining.
FU-KUN XIAO ZHI-HUI GE
Resources and Environmental Project Institute, Heilongjiang University of Science & Technology Harbin, 150027, 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
663-668
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）