| 苍岭隧道岩爆预测的数值分析及初期支护时机探讨 |
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| 引用本文： | 汪波,何川,俞涛.苍岭隧道岩爆预测的数值分析及初期支护时机探讨[J].岩土力学,2007,28(6):1181-1186. |
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| 作者姓名： | 汪波 何川 俞涛 |
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| 作者单位： | 西南交通大学,土木工程学院地下工程系,成都,610031 |
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| 摘 要： | 从隧道的开挖方式及开挖后涧周应力逐渐调整这一实际状况出发，选取了具有典型代表意义的断面进行数值分析，并预测整个计算范围内岩爆的状况。通过计算分析可知，随着应力释放系数的逐渐加大，岩爆发生的区域及等级不断增加。为有效防止或降低岩爆发生的可能，分析现场的监控量测资料后，确定了本隧道不同地段的最佳支护时机。
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| 关 键 词： | 隧道 岩爆预测 数值计算 应力释放系数 支护时机 |
| 文章编号： | 1000-7598-（2007）06-1181-06 |
| 收稿时间： | 2005-07-18 |
| 修稿时间： | 2005-07-18 |
Study on numerical analysis of rockburst and primary support time in Cangling Tunnel |
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| WANG Bo,HE Chuan,YU Tao.Study on numerical analysis of rockburst and primary support time in Cangling Tunnel[J].Rock and Soil Mechanics,2007,28(6):1181-1186. |
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| Authors: | WANG Bo HE Chuan YU Tao |
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| Institution: | Department of Underground Engineering, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | According to the excavation style and gradually adjusting of the stress after excavation in the tunnel,some typical sections are chosen to numerically analyze and forecast the status of rockburst in the whole calculational scope.According to the calculational result,some conclusions can be drawn as follows: the larger of the stress releasing coefficient has become,the area and the grade of rockburst would increase.For effectively avoiding or reducing the occurring of rockburst,the most prime support times for the different areas are given by analyzing the measuring data in-situ in this tunnel. |
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| Keywords: | tunnel rock burst forecasting numerical calculation stress releasing coefficient support time |
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