| 考虑锚固复合承载体效应的巷道安全支护参数分析 |
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| 引用本文： | 王超,赵光明,孟祥瑞. 考虑锚固复合承载体效应的巷道安全支护参数分析[J]. 金属矿山, 2015, 44(8): 53-57 |
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| 作者姓名： | 王超 赵光明 孟祥瑞 |
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| 作者单位： | 1.煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001；2.安徽理工大学能源与安全学院，安徽 淮南 232001 |
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| 基金项目： | * 国家自然科学基金项目(编号：51174005，51374013,51134012)，高等学校博士学科点专项科研基金项目（编号：20133415110006），霍英东教育基金项目(编号：121050)，安徽省学术和技术带头人及后备人选科研活动经费项目(编号：DG073)。 |
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| 摘 要： | 考虑锚固复合承载体对巷道支护力和变形量的影响，以锚固复合承载体为结构基础，依据岩石的极限拉压破坏准则并结合芬纳-卡斯特奈公式，对圆形巷道支护力和变形量进行分析研究，推导出锚杆支护巷道最小支护力和最大允许变形量的表达式。基于该表达式经算例分析得出：圆形巷道最小支护力和最大允许变形量与巷道埋深呈线性相关；随着锚固复合承载体厚度和内摩擦角增加，巷道最小支护力减小，巷道最大允许变形量增大；在计算锚杆支护的圆形巷道最小支护力和最大允许变形量时考虑锚固复合承载体的作用更合理。
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| 关 键 词： | 支护力 变形量 塑性破坏 锚固复合承载体 强度 |
Roadway Safety and Support Parameters Analysis of Considering Composite Bolt-rock Bearing Structure Effect |
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| Wang Chao,Zhao Guangming,Meng Xiangrui. Roadway Safety and Support Parameters Analysis of Considering Composite Bolt-rock Bearing Structure Effect[J]. Metal Mine, 2015, 44(8): 53-57 |
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| Authors: | Wang Chao Zhao Guangming Meng Xiangrui |
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| Affiliation: | 1.Key Laboratory of Safety and High-efficiency Coal Mining，Ministry of Education，Huainan 232001，China；2.School of Mining and Safety，Anhui University of Science and Technology，Huainan 232001，China |
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| Abstract: | Considering the influence of the composite bolt-rock bearing structure to the support force and the roadway deformation，based on the composite bolt-rock bearing structure，and depending on the limit tension-compression failure criteria of rock and Fenner-Castenay formula，the support force and the deformation of circular roadway were analyzed，thus deriving out the formula of the minimum support resistance and the maximum allowable deformation of the bolt supporting roadway.Depending on the formula，the calculation analysis on samples showed that the minimum support resistance and the maximum allowable deformation of the circular tunnel was positively correlated with the depth of roadway.The minimum support force of the roadway decreased with the increasing of the thickness and internal friction angle of the composite bolt-rock bearing structure，while the maximum allowable deformation of the tunnel increased.It was more reasonable to take bolt-rock bearing structure into account while calculating the minimum support resistance and the maximum allowable deformation of the circular roadway. |
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| Keywords: | Supporting force Deformation Plastic failure Composite bolt-rock bearing structure Strength |
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