| 昆河铁路新碧鸡关隧道进口段围岩分级研究 |
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| 引用本文： | 王坤.昆河铁路新碧鸡关隧道进口段围岩分级研究[J].路基工程,2011,0(4):7-8. |
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| 作者姓名： | 王坤 |
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| 作者单位： | 中铁二院工程集团有限责任公司, 成都 610031 |
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| 摘 要： | 新碧鸡关隧道地质条件复杂，断层、滑坡等不良地质发育，对围岩分级设计影响较大。介绍的分级程序是首先作出隧道进口段节理玫瑰花图和赤平投影图，再结合岩性、构造、地下水及地应力等方面的分析研究，依据现行规范进行详细分级:隧道进口段基本分级为Ⅴ级，地下水修正维持基本分级，地应力修正降一级，无隧道浅埋修正，最后得出新碧鸡关隧道进口段围岩为Ⅵ级围岩。
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| 关 键 词： | 隧道围岩分级 基本分级 修正分级 |
| 收稿时间： | 2019-11-11 |
Surrounding Rock Classification in the Section of New Bijiguan Tunnel Entrance on Kunming-Hekou Railway |
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| Authors: | WANG Kun |
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| Institution: | WANG Kun(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China) |
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| Abstract: | New Bijiguan Tunnel has complex geological condition and adverse geological development such as fault and landslide,which exerts larger influence on surrounding rock classification design.This paper introduces a detailed classification method: first draft rose diagram of joints and stereographic projection of tunnel entrance,then classify surrounding rock according to the current criterion based on analyzing lithologic character,structure,underground water and ground stress.The result is that tunnel entranc... |
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| Keywords: | surrounding rock classification basic classification modified classification |
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