破碎矿体中化学注浆扩散规律研究及应用

doi:10.13722/j.cnki.jrme.2014.12.004

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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% .

Key words： mining engineering reinforcement support chemical grouting grouting system into-hole rate ore recovery ratio

Received: 13 June 2013

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.12.004 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I12/2396

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