Rock burst risk and anti-impact requirements during mining on island working face
Due to the prior unreasonable layout of the working face in some areas of the mine and illegally indiscriminate mining,the formation of the stress concentration area on isolated island faces at the final period of mining is an inevitable outcome.Need to avoid the stress concentration area as much as possible and arrange the working face reasonably and effec-tively,solve many problems and disaster prevention during the late mining of the working face,such as rock burst preven-tion,fire prevention and so on,must be addressed.Based on the analysis of the rock burst behavior,prevention status and in-fluential factors on the island working face,we find that the sectional coal pillar,the thickness of bottom coal and the adja-cent goaf have great influence on the forming of rock burst during mining.In this paper,the risk analysis and evaluation of the relationship between coal-rock structure and dynamic disasters are carried out,and the locally preventive measures of rock burst during mining on the island working face are proposed.
island working faceroadway layoutrock bursttreatment measure
国家科技期刊平台
NSTL
万方数据
维普
