| 流变断裂型矿岩自然崩落速率模拟预测 |
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| 引用本文： | 袁海平,吴祥松,温广军.流变断裂型矿岩自然崩落速率模拟预测[J].采矿与安全工程学报,2008,25(3). |
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| 作者姓名： | 袁海平 吴祥松 温广军 |
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| 作者单位： | 1. 江西理工大学,应用科学学院,江西,赣州,341000
2. 嘉兴学院,土木工程系,浙江,嘉兴,314001 |
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| 基金项目： | 国家自然科学基金，江西理工大学博士基金 |
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| 摘 要： | 矿岩自然崩落速率预测是一个涉及崩落规律和崩落与时间相依关系的复杂动态过程,通过数值模拟的方法,对流变断裂型矿岩的自然崩落规律和崩落速率进行了模拟研究.研究表明:对于单一的拉底工程,矿岩破坏首先从拉底区上部中间开始,成拱形向上发展.当拉底面积达到一定值后,在拉底顶板中心位置将出现大范围的拉应力区,矿石的自然崩落主要是拉伸破坏引起,矿岩在其自重作用下脱离母体,产生初始崩落;当拉底面积继续增大并达到某个量值时,矿岩达到持续崩落.矿岩崩落预测将为合理、经济安排生产计划和生产设计提供有力依据.
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| 关 键 词： | 流变断裂 矿岩 自然崩落 速率 |
Prediction for Block Caving Velocity of Rheologic Fracture Ore-Rock |
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| YUAN Hai-ping,WU Xiang-song,WEN Guang-jun.Prediction for Block Caving Velocity of Rheologic Fracture Ore-Rock[J].Journal of Mining and Safety Engineering,2008,25(3). |
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| Authors: | YUAN Hai-ping WU Xiang-song WEN Guang-jun |
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| Affiliation: | 1.School of Application Sciences;Jiangxi University of Science and Technology;Ganzhou;Jiangxi 341000;China;2.Department of Civil Engineering;Jiaxing University;Jiaxing;Zhejiang 314001;China |
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| Abstract: | Prediction for block caving velocity of ore-rock is a complex dynamic process that relates to the caving rule and to the relation between caving and time.Block caving rule and caving velocity of rheologic fracture ore-rock were numerically simulated in this paper,showing that the failure of ore-rock starts from the central roof of undercut field to the single undercut engineering,and develops upward in an arch shaped form.When the undercut area reaches a certain value,a wide tensile stress region will be fo... |
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| Keywords: | rheologic fracture ore-rock block caving velocity |
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