深部复杂金矿体充填开采对地表建筑物稳定性影响
TD853; 为研究深部复杂矿体开采对地表建筑物稳定性的影响,借助概率积分法计算安全开采深度;采用3D Mine-Rhinoceros-FLAC3D耦合构建矿区三维模型,进行地表安全性及变形规律研究.结果表明:①采用充填法进行深部矿体开采,地表产生均匀沉降变形,最大主应力随回采步骤增加呈多项式增长趋势,最小主应力呈线性增长趋势,扰动高度沿矿体走向呈正态分布趋势;②矿体的开采使其正上方产生"盆地式变形",并依据安全性参数进行地表扰动边界圈定;③当下沉变形值小于10 mm、变化率大于0.5时和下沉变形值大于10 mm而小于20 mm、变化率大于1.5时,地表均为整体下沉现象,稳...
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Published in | 东北大学学报(自然科学版) Vol. 42; no. 8; pp. 1143 - 1158 |
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Main Authors | , , , |
Format | Journal Article |
Language | Chinese |
Published |
北京科技大学土木与资源学院,北京 100083
01.08.2021
北京科技大学金属矿山高效开采与安全教育部重点实验室,北京 100083 |
Subjects | |
Online Access | Get full text |
ISSN | 1005-3026 |
DOI | 10.12068/j.issn.1005-3026.2021.08.012 |
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Abstract | TD853; 为研究深部复杂矿体开采对地表建筑物稳定性的影响,借助概率积分法计算安全开采深度;采用3D Mine-Rhinoceros-FLAC3D耦合构建矿区三维模型,进行地表安全性及变形规律研究.结果表明:①采用充填法进行深部矿体开采,地表产生均匀沉降变形,最大主应力随回采步骤增加呈多项式增长趋势,最小主应力呈线性增长趋势,扰动高度沿矿体走向呈正态分布趋势;②矿体的开采使其正上方产生"盆地式变形",并依据安全性参数进行地表扰动边界圈定;③当下沉变形值小于10 mm、变化率大于0.5时和下沉变形值大于10 mm而小于20 mm、变化率大于1.5时,地表均为整体下沉现象,稳定性不受影响. |
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AbstractList | TD853; 为研究深部复杂矿体开采对地表建筑物稳定性的影响,借助概率积分法计算安全开采深度;采用3D Mine-Rhinoceros-FLAC3D耦合构建矿区三维模型,进行地表安全性及变形规律研究.结果表明:①采用充填法进行深部矿体开采,地表产生均匀沉降变形,最大主应力随回采步骤增加呈多项式增长趋势,最小主应力呈线性增长趋势,扰动高度沿矿体走向呈正态分布趋势;②矿体的开采使其正上方产生"盆地式变形",并依据安全性参数进行地表扰动边界圈定;③当下沉变形值小于10 mm、变化率大于0.5时和下沉变形值大于10 mm而小于20 mm、变化率大于1.5时,地表均为整体下沉现象,稳定性不受影响. |
Author | 张超 付建新 宋卫东 刘建博 |
AuthorAffiliation | 北京科技大学土木与资源学院,北京 100083;北京科技大学金属矿山高效开采与安全教育部重点实验室,北京 100083 |
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Author_FL | SONG Wei-dong ZHANG Chao FU Jian-xin LIU Jian-bo |
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Keywords | 地表变化率 安全开采深度 地表安全性 3D Mine-Rhinoceros-FLAC3D "三下"开采 |
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Title | 深部复杂金矿体充填开采对地表建筑物稳定性影响 |
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