| 充填体与岩体能量和强度匹配的分析及应用 |
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| 引用本文： | 杜坤,李地元,金解放. 充填体与岩体能量和强度匹配的分析及应用[J]. 中国安全科学学报, 2011, 21(12) |
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| 作者姓名： | 杜坤 李地元 金解放 |
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| 作者单位： | 1. 中南大学资源与安全工程学院,湖南长沙410083;中南大学深部金属矿产开发与灾害控制湖南省重点实验室,湖南长沙410083
2. 中南大学资源与安全工程学院,湖南长沙410083;江西理工大学建筑与测绘工程学院,江西赣州341000 |
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| 基金项目： | 国家自然科学基金资助(11102239); 国家“973”项目(2010CB732004); 中南大学自由探索计划项目(2011QNZT083) |
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| 摘 要： | 矿山嗣后充填法中,采用经验类比法判定胶结充填体的强度存在诸多问题。利用新的方法来分析充填体与岩体的匹配是必要的。对某铜矿灰砂比为1∶6、1∶8、1∶10和1∶12的4种尾砂胶结充填体进行力学试验和匹配分析。首先利用损伤力学方法建立充填体破坏前本构方程,根据岩体开挖释放能量与充填体蓄积应变能相近的原则,来判定岩体与充填体的匹配;然后运用GTS/MI-DAS有限元软件模拟开采-充填过程,根据应力变化与充填体极限强度的大小关系判定两者的匹配。2种方法所得到的结论一致。分析结果表明,该矿山宜采用充填配比不小于1∶10的尾砂胶结充填体。
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| 关 键 词： | 充填体与岩体匹配 尾砂胶结充填体 充填采矿法 损伤力学 数值模拟 |
Matching Analysis of Energy and Strength between Backfill and Rock Mass and Its Application |
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| DU Kun , LI Di-yuan , JIN Jie-fang. Matching Analysis of Energy and Strength between Backfill and Rock Mass and Its Application[J]. China Safety Science Journal, 2011, 21(12) |
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| Authors: | DU Kun LI Di-yuan JIN Jie-fang |
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| Affiliation: | DU Kun1,2 LI Di-yuan1,2 JIN Jie-fang1,3(1 School of Resources and Safety Engineering,Central South University,Changsha Hunan 410083,China 2 Hunan Key Laboratory of Resources Exploitation and Hazard Control for Deep Metal Mines,China 3 School of Architectural and Surveying Engineering,Jianxi University of Science and Technology,Ganzhou Jiangxi 341000,China) |
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| Abstract: | Since some problems occur when adopting experience analogy method to determine the filling strength in the underground stope after mining excavation,it is necessary to use a new method to evaluate strength match between backfill and rock mass.The strength of four types of backfill in a copper mine with different cement-tailing ratios of 0.167,0.125,0.100 and 0.083 were tested in laboratory.First,the damage constitutive equations were investigated based on damage mechanics.According to the principle that rel... |
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| Keywords: | match between backfill and rock mass cemented tailings backfill cut-and-fill mining method damage mechanics numerical simulation |
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