Loading State and Characteristic Analysis of Quasi-Static Stress Fieldon Coal Seam Pre-splitting Blasting
Pre-splitting blasting in coal seam can come into being plentiful cracks that is most important for improving the effect of methane extraction. Combining ventage stress concentration theory with thick cylinder principle, this paper analyzed detailedly the characteristics of various stress basing on elasticity mechanics. The results showed that the distributing characteristics of radial stress, tangent stress and sheafing stress around explosion cavity are distinct. Such a study will be significant not only for parameter design during gas exhaust project, but also for perfecting more the theory of pre-splitting blasting in coal seam.
pre-splitting blasting quasi-static stress field elasticity mechanics explosion cavity distributing characteristics
WANG Zhiliang LI Qizhong ZHANG Licong ZHANG Yuebing
Training Department of North China Institute of Science and Technology, Beijing 101601 ,China
国际会议
The 2010 Chinese Seminar on the Principles of Safety Science and Technology(第二届全国安全科学理论研讨会)
北京
英文
466-470
2010-10-01（万方平台首次上网日期，不代表论文的发表时间）