(Key Laboratory of Educational Ministry for High Efficient Mining and Safety in Mental Mine,University of Science and
Technology Beijing,Beijing 100083,China)
Abstract:The joint fissures of a copper mine is very well developed with the fragmental surrounding rock and ore body. The success rate of drilling holes for explosive installation was low,so reinforcement was needed. The explosion resistant resin MP 364 for mine applications was selected for the chemical grouting test in-situ. The grouting pressure and the diffusion radius etc were determined experimentally. A grouting system was built based on the experimental results. After the application of the chemical grouting according to the recommended proportion of grouting materials,the rock mass strength was improved significantly,the success rate of drilling holes for explosive installation was increased by 25%,the exposed area of the stope roof was increased by 110 m2,the retention volume of the stope ore was reduced by about 10%,and the ore recovery ratio was increased by 23.3% .
李学华,杨宏敏,刘汉喜,等. 动压软岩巷道锚注加固机制与应用研究[J]. 采矿与安全工程学报,2006,23(2):159-163.(LI Xuehua,YANG Hongmin,LIU Hanxi,et al. Research on bolt-grouting reinforcement technology in dynamic pressure and soft rock roadway[J]. Journal of Mining and Safety Engineering,2006,23(2):159-163. (in Chinese))
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