| 白龙山隧道地应力场数值模拟研究及岩爆预测 |
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| 引用本文： | 刘国伟. 白龙山隧道地应力场数值模拟研究及岩爆预测[J]. 中国矿业, 2019, 28(S2) |
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| 作者姓名： | 刘国伟 |
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| 作者单位： | 山西省交通环境保护中心站有限公司 |
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| 基金项目： | 山西省科技厅重点研发项目(201603D321118)；山西省交通厅建设科技项目(17-2-03)。 |
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| 摘 要： | 根据静兴高速公路白龙山隧道区域应力场特征,建立三维地质模型,采取有限元数值模拟的方法分析研究工程区的初始地应力场分布规律。通过分析隧道轴线方向上的地应力场特征,发现隧道区初始地应力场以构造应力为主导,区内存在较高地应力场,长度约为3150m。最后,根据地应力资料对高地应力区隧道开挖阶段进行岩爆预测,结果表明隧道计算段岩爆等级为弱岩爆~中等岩爆。
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| 关 键 词： | 隧道工程；初始地应力场；有限元数值模拟；岩爆 |
| 收稿时间： | 2019-07-11 |
| 修稿时间： | 2019-08-27 |
Numerical simulation of the in-situ stress of the Bailong mountain tunnel and rock burst forecast |
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| LIU Guowei. Numerical simulation of the in-situ stress of the Bailong mountain tunnel and rock burst forecast[J]. CHINA MINING MAGAZINE, 2019, 28(S2) |
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| Authors: | LIU Guowei |
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| Affiliation: | Shanxi Transportation Environmental Protection Center Station Co.,Ltd.. |
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| Abstract: | Based on the characteristics of regional in-situ stress data of Bailong Mountain tunnel on Jingxing highway in Shanxi Province, a 3D geological model was established and the distribution of initial in situ stress field in the engineering area was studied by means of FEM numerical simulation. It is considered that initial principal stress is tectonic stress by analyzing the characteristics of initial in-situ stress field in the direction of tunnel axis, and there is a high in-situ stress field in the area, which is about 3150m in length. Finally, rockburst was predicted during tunnel excavation in high stress area , which was based on in-situ stress data. The results show that the possibility of weak and moderate rock burst in a section of the tunnel. |
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| Keywords: | tunneling engineering in-situ stress FEM numerical simulation rockburst |
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