采矿与安全工程学报2017，Vol.34Issue(2)：371-377,7.DOI:10.13545/j.cnki.jmse.2017.02.025
废石胶结充填体与砂页岩合理匹配研究
Reasonable matching for cemented waste rock backfill and sand shale
摘要
Abstract
Cemented backfilling with waste rock and cement is the best way to realize efficient and no waste mining in a deep buried ore body. Therefore, the compressive strengths of cemented waste rock backfills with seven different mixture ratios at different solidification durations were measured with the rock mechanics testing machine of RMT-150B. Based on the test results, the damage theory models and the energy dissipation equations of cemented waste rock backfill and surrounding rock were established, and applied to the test stope of the No.2 ore body in the western district of Baoshan mine to analyze its matching characteristics. The results have shown that the damage coefficients of backfills increase ex-ponentially with its strain: the damage values of the peak stress and the stress potential energy of back-fills increase with the loess content, and decrease with the cement content; the matching coefficient of cemented waste rock backfill and sand shale increases with the buried depth of the ore body and de-creases with the elastic modulus; the matching coefficient of cemented waste rock backfill with mixture ratio type D and sand shale when it is more than 1 is the reasonable matching for the mine.关键词
废石胶结充填体/砂页岩体/峰值应力损伤/能量耗散/匹配系数Key words
cemented waste rock backfill/sand shale/peak stress damage/energy dissipation/matching coefficient分类
矿业与冶金引用本文复制引用
贺桂成,刘生龙,黄炳香,张志军,丁德馨..废石胶结充填体与砂页岩合理匹配研究[J].采矿与安全工程学报,2017,34(2):371-377,7.基金项目
国家自然科学基金项目(51374129) （51374129）
