| 老采空区地基变形对地面建筑影响的数值分析 |
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| 引用本文： | 汪吉林,丁陈建,张云,吴圣林. 老采空区地基变形对地面建筑影响的数值分析[J]. 采矿与安全工程学报, 2008, 25(4) |
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| 作者姓名： | 汪吉林 丁陈建 张云 吴圣林 |
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| 作者单位： | 中国矿业大学资源与地球科学学院,江苏,徐州,221116;中国矿业大学岩土工程新技术发展有限公司;山西交科公路勘察设计院阳泉分院,山西,阳泉,045006 |
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| 基金项目： | 科技部科技型中小企业技术创新基金资助项目 |
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| 摘 要： | 为了分析和评价老采空区地基的残余变形及其对地面建筑物的影响,采用数值模拟的方法研究了老采空区地基的稳定性.针对岩石和土层的组合地基,利用主采煤层底板等高线图和钻探资料,应用趋势面分析的方法,基于FLAC3D建立了三维多层状地质体模型,结合概率积分法计算成果,反演拟合了地质体的力学参数,模拟计算了在地面建筑荷载作用下采空区地基的沉降变形及垂向应力分布.通过注浆治理前后和建筑物建成前后老采空区地基变形差异的对比分析,确定了老采空区地基的稳定性和地面建筑的安全性,同时也提出了一种基于FLAC3D的采空区地基稳定性计算分析的方法和程序.认为三维数值模拟能较好地解决采空区地基变形计算和稳定性分析的问题.
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| 关 键 词： | 稳定性 采空区 地基 沉降 数值模拟 |
Numerical Analysis of Effect of Abandoned Goaf Foundation Deformation on Ground Buildings |
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| WANG Ji-lin,DING Chen-jian,ZHANG Yun,WU Sheng-lin. Numerical Analysis of Effect of Abandoned Goaf Foundation Deformation on Ground Buildings[J]. Journal of Mining and Safety Engineering, 2008, 25(4) |
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| Authors: | WANG Ji-lin DING Chen-jian ZHANG Yun WU Sheng-lin |
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| Affiliation: | 1.College of Resources and Earth Science;China University of Mining & Technology;Xuzhou;Jiangsu 221116;China;2.Geotechnical Engineering & New Technology Development Co.;Ltd.;Jiangsu 221008;3.Yangquan Branch;Shanxi Jiaoke Institute of Highway Investigation and Design;Yangquan;Shanxi 045006;China |
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| Abstract: | For analyzing and evaluating the residual deformation of abandoned goaf foundation and its effect on ground buildings,the stability of abandoned goaf foundation was numerically analyzed.Aiming at the combined foundation of rock and soil,the 3-D multi-layer geologic body model based on FLAC3D was built by using the trend surface analysis,floor contour map,and drilling data.Combined with the method of probability-integral,the mechanical parameters of the geologic body were solved by inversion analysis.The sub... |
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| Keywords: | stability mine goaf foundation subsidence numerical simulation |
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