| 开采引起上覆公路地表沉降与变形的数值分析 |
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| 引用本文： | 张成良,侯克鹏,李克钢.开采引起上覆公路地表沉降与变形的数值分析[J].岩土力学,2008,29(Z1):635-639. |
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| 作者姓名： | 张成良 侯克鹏 李克钢 |
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| 作者单位： | 昆明理工大学,国土资源与工程学院,昆明,650093 |
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| 基金项目： | 昆明理工大学校科研和教改项目 |
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| 摘 要： | 由于开采的需要,某矿群已从露天转入地下开采,在其开采境界内上部有一条乡镇公路穿过,为最大限度地回收资源和保证上部公路的安全运行,通过岩体宏观结构调查分析、取样、室内岩石力学试验和工程类比,综合确定岩体力学参数;并采用三维有限元对三种不同的开采方案引起公路地表的沉降高度进行了卸荷模拟和数值计算,模拟计算结果表明:随着开采高度的增加,公路地表沉降高度呈非线性增加,开采高度越高,其地表沉降高度越大,开采高度采超过1 300水平时,上部围岩将处于不稳定状态,影响公路的安全运行.通过工业试验,开采高度定为1 300水平时,其沉降高度在15 cm以内,能够保证上覆公路的安全运行.
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| 关 键 词： | 地下开采 有限元 地表沉降 开采高度 |
| 收稿时间： | 2008-07-25 |
Numerical analysis of deformation and ground surface settlement of overlying road caused by exploiting |
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| ZHANG Cheng-liang,HOU Ke-peng,LI Ke-gang.Numerical analysis of deformation and ground surface settlement of overlying road caused by exploiting[J].Rock and Soil Mechanics,2008,29(Z1):635-639. |
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| Authors: | ZHANG Cheng-liang HOU Ke-peng LI Ke-gang |
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| Institution: | Faculty of Land Resource, Kuming University of Technology, Kuming 650093, China |
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| Abstract: | 3# ore cluster is striped mining turn into underground due to exploiting requirement;and the parameters of rock mass mechanics are determined by way of rock structure investigation,sampling,indoor rock mechanics experiment and engineering analogy its aim to reclaiming resource mostly and guaranteeing 3# ore cluster overlying rural road safety operation;then unloading simulation with 3D finite elements is applied based on three exploiting scheme methods;the simulation results are as fellows: the settlement h... |
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| Keywords: | underground mining finite elements ground surface settlement exploiting height |
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