| 冻结井筒开挖冻结壁变形的数值模拟与分析 |
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| 引用本文： | 盛延仲.冻结井筒开挖冻结壁变形的数值模拟与分析[J].矿业快报,2008,24(6):27-29. |
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| 作者姓名： | 盛延仲 |
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| 作者单位： | 中煤第一建设公司,056001,河北省邯郸市 |
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| 摘 要： | 针对山东郭屯煤矿主井冻结深度702m,考虑地层分布特征,按轴对称模型进行计算分析.模型分为已开挖支护段、模拟开挖段、底部为下卧层三段.模拟计算开挖支护段高为2m,针对515m深度的粘土层、587m深度的粗砂层的控制地层,分别进行开挖过程中冻结壁变形的数值模拟.计算结果显示,开挖过程中冻结壁径向应力减小,冻结壁外缘达地压值;塑性应变随开挖过程发生,工作面与井帮交界处产生了径向塑性压应变;井心区径向蠕变压应变显著.
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| 关 键 词： | 冻结井筒 数值模拟 冻结壁变形 |
Numerical Simulation and Analysis of Deformation of Excavated Freezing Wall in Freezing Shaft |
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| Sheng Yanzhong.Numerical Simulation and Analysis of Deformation of Excavated Freezing Wall in Freezing Shaft[J].Express Information of Mining Industry,2008,24(6):27-29. |
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| Authors: | Sheng Yanzhong |
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| Affiliation: | Sheng Yanzhong (Department of Special Shaft Excavation,China Coal First Construction Cooporation.) |
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| Abstract: | In the light of freezing depth of 702m in the main shaft of Shandong Guotun Coal Mine and considering stratum distribution characteristics, the freezing depth of the main shaft is calculated and analyzed by an axial symmetry model. The model is divided into the excavation support section, simulation excavation section and lower layer in the bottom. Numerical simulation of deformation of freezing wall in excavation process was carried out on the excavation support section with height of 2m, clay stratum with... |
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| Keywords: | Freezing shaft Numerical simulation Deformation of freezing wall |
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