| 埋深在围岩分级修正中的应用探讨 |
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| 引用本文： | 孙辉,郑颖人,王在泉,张黎明,张晓娟.埋深在围岩分级修正中的应用探讨[J].地下空间与工程学报,2012,8(1):94-98. |
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| 作者姓名： | 孙辉 郑颖人 王在泉 张黎明 张晓娟 |
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| 作者单位： | 1.青岛理工大学,山东 青岛 266033;2.后勤工程学院,重庆 400041;3.枣庄市建筑设计研究院勘察公司,山东 枣庄 277102 |
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| 基金项目： | 国家自然科学基金资助项目(51074095,41002109);教育部高等学校博士学科点专项科研基金资助项目(20103721110002);山东省自然科学杰出青年基金项目(JQ201017) |
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| 摘 要： | 随着隧道力学的发展,人们对围岩分级标准认识提高,现有的围岩分级标准还存在一些问题,也没有考虑到洞跨、埋深等因素的影响。为此,主要参考铁路、公路和锚喷支护设计规范,将岩体强度参数、安全系数同围岩级别对应起来,利用FLAC3D软件对不同埋深情况下的安全系数进行了模拟计算,把埋深作为围岩分级的影响因素加入其中,建立了安全系数与围岩分级指标BQ之间的数学关系,探讨了埋深对岩体评分标准的影响,完善了岩体基本质量指标BQ的计算公式。
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| 关 键 词： | 围岩分级 埋深 安全系数 BQ |
| 收稿时间： | 2011-11-04 |
Discussion of Depth in the Amendment of Surrounding Rock Classification |
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| Sun Hui
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Zheng Yingren
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Wang Zaiquan
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Zhang Liming
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Zhang Xiaojuan.Discussion of Depth in the Amendment of Surrounding Rock Classification[J].Chinese Journal of Underground Space and Engineering,2012,8(1):94-98. |
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| Authors: | Sun Hui Zheng Yingren Wang Zaiquan Zhang Liming Zhang Xiaojuan |
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| Affiliation: | 1.Qingdao Technological University, Qingdao,Shandong 266033,China;2.Logistical Engineering University, Chongqing400041,China;3.Zaozhuang Institute of Architectural Design & Research, Zaozhuang,Shandong 277102,China |
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| Abstract: | With the development of tunnel mechanics,the knowledge about the standard on rock classification is improved and there are some problems in present standard on rock classification,which didn’t take the tunnel span and depth of embedment into consideration.With reference to design code for railway,highway and bolt spray support,the strength of rock,safety factor are related with rock class.The safety factor under different depth of embedment is calculated with software FLAC3D,depth of embedment is enclosed as an influencing factor.A mathematic relationship is established between safety factor and rock classification index BQ.The effect of depth of embedment on evaluation of rock is explored and the calculation formula for quality index of the rock BQ is improved. |
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| Keywords: | classification of rock depth of embedment safety factor BQ |
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