| 管道穿越黄土陡坡斜井工程稳定性分析 |
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| 引用本文： | 王怡,王芝银,马兰平,曾志华.管道穿越黄土陡坡斜井工程稳定性分析[J].岩土力学,2008,29(Z1):267-271. |
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| 作者姓名： | 王怡 王芝银 马兰平 曾志华 |
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| 作者单位： | 1. 中国石油大学 城市油气输配技术北京市重点实验室，北京 102249； 2. 中国石油天然气管道工程有限公司，河北 廊坊 065000 |
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| 摘 要： | 长输油气管道工程频遇黄土冲沟，给管线的施工和安全运营带来了困难。基于邓肯-张非线性弹性本构模型，利用数值模拟方法，对斜井开挖法穿越边坡的井周及坡体的受力变形规律进行了系统的研究和分析。结果表明，在确保斜井布设在边坡潜在的最危险滑动面以外的前提下，坡顶斜井入口越接近坡肩，斜井井周及坡体的稳定性越好。鉴于黄土斜井拱顶易出现塌落的问题，基于多工况数值模拟分析结果，结合响应面方法，构建了拱顶屈服区深度的预测公式，经验证相关性良好，可用于对斜井穿越黄土冲沟或陡坡的支护设计。
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| 关 键 词： | 斜井穿越 黄土陡坡 数值模拟 屈服区深度 响应面法预测 |
| 收稿时间： | 2008-07-15 |
Stability analysis of inclined shaft engineering in pipeline traversing loess steep slope |
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| WANG Yi,WANG Zhi-yin,MA Lan-ping,ZENG Zhi-hua.Stability analysis of inclined shaft engineering in pipeline traversing loess steep slope[J].Rock and Soil Mechanics,2008,29(Z1):267-271. |
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| Authors: | WANG Yi WANG Zhi-yin MA Lan-ping ZENG Zhi-hua |
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| Institution: | 1. Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China; 2. China Petroleum Pipeline Engineering Corporation, Langfang 065000, China |
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| Abstract: | Long distance pipeline engineering of natural gas and oil faces the difficulty of traversing loess gully,which has a bad effect on the pipeline construction and operation safety.Based on Duncan-Chang nonlinear constitutive model,mechanical behaviors of slope and soil around inclined shaft have been studied systematically through numerical simulation method,when inclined shaft excavation method is taken to traverse loess gullies.The results indicate that: on the premise of that inclined shaft position is des... |
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| Keywords: | inclined shaft traversing loess steep slope numerical simulation yield zone depth RSM prediction |
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