| 穿层锚杆作用效果的DDM数值建模及分析 |
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| 引用本文： | 夏小和,黄醒春,李波,沈为平.穿层锚杆作用效果的DDM数值建模及分析[J].上海交通大学学报,2001,35(4):499-502. |
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| 作者姓名： | 夏小和 黄醒春 李波 沈为平 |
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| 作者单位： | 上海交通大学建筑工程与力学学院, |
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| 基金项目： | 上海交通大学科研基金资助项目(A9903001) |
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| 摘 要： | 根据穿层岩石锚杆作用特点，通过建立以层面粘结力C、内摩察角Φ等效表述的数值模型，将位移不连续方法（DDM）应用于深部硐室层状岩石顶板锚杆支护效果的分析，探讨了不同锚固条件下硐室顶板的铅垂位移特征；通过DDM计算结果与传统梁理论所得结果的比较及顶板围岩应力分布特征的分析，指出了利用梁理论进行锚杆支护设计的不合理性，结果表明，合理的地下层状岩石锚杆支护参数设计应在考虑锚杆与围岩的共同作用条件下计算。
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| 关 键 词： | 层状岩石 穿层锚杆 DDM建模 锚固效果 锚杆支护 应力分布 位移不连续方法 地下工程 |
| 文章编号： | 1006-2467(2001)04-0499-04 |
| 修稿时间： | 2000年1月12日 |
Displacement Discontinuity
Method Modeling and Analysis of Supporting Effect of Rock-Bolt through Layer Rock |
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| XIA Xiao he,HUANG Xing chun,LI Bo,SHEN Wei ping.Displacement Discontinuity
Method Modeling and Analysis of Supporting Effect of Rock-Bolt through Layer Rock[J].Journal of Shanghai Jiaotong University,2001,35(4):499-502. |
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| Authors: | XIA Xiao he HUANG Xing chun LI Bo SHEN Wei ping |
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| Abstract: | According to the supporting behaviors of layer rock-bolt, displacement discontinuity method (DDM) was applied to analyze the supporting effect of rock-bolt through layer roof at deep opening by establishing the numerical model expressed in friction angle φ and cohesion C. The stress distribution and vertical displacement were investigated under deferent rock-bolt supporting conditions. In addition, the validity of applying classical beam theory to calculate supporting parameter was discussed by means of comparing DDM calculating result with that of by the beam theory. It shows that the action of bolt together with rock must be taken into consideration in order to correctly make computation of rock-bolt supporting parameters. |
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| Keywords: | layer rock rock bolt supporting for layer rock DDM modeling and analysis supporting effect of rock bolt |
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