断层对隧道围岩稳定性的影响

罗利锐; 刘志刚

断层对隧道围岩稳定性的影响

罗利锐^1,,
刘志刚²

1.
中国京冶工程技术有限公司, 北京 100088
2.
石家庄铁道学院, 石家庄 050043

基金项目:

财政部自然科学基金资助项目财企【 2007】 184号文

详细信息

作者简介:
罗利锐(1982-), 男, 山西天镇人, 硕士, 主要从事工程地质、隧道超前地质预报等领域的科研工作。E-mail:luoliruillr@yahoo.com.cn

中图分类号: U451⁺.2
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- 文章访问数: 239
- HTML全文浏览量: 100
- PDF下载量: 20
- 被引次数: 0
出版历程
- 收稿日期: 2009-03-27
- 刊出日期: 2009-09-28

INFLUENECE OF FAULT CRUSH BELTS ON THE STABILITY OF TUNNEL ROCK

LUO Li-rui^1
,,
LIU Zhi-gang²

1.
China JINGYE Engineering Corporation Limited, Beijing 100088, China
2.
Shijiazhuang Railway Institute, Shijiazhuang 050043, China

摘要

摘要: 针对隧道开挖过程中的隧道围岩稳定性问题, 将地质力学中构造体系的复合及构造演化应用到隧道围岩稳定性分析中去, 分析了各种力学性质的单一式断层、归并复合式断层以及断层交会等的特点和对隧道围岩稳定性的影响, 并通过厦门海底隧道现场实例加以验证。研究结果显示, 断层交会和断层归并复合很容易引起围岩失稳, 断层的其他要素如风化程度、断层走向与隧道中线走向的夹角对围岩稳定性影响也很大。研究为隧道施工提供了有意义的借鉴。
- 断层 /
- 隧道 /
- 稳定性
Abstract: The stability of tunnel rock is vital to tunnel construction. By applying the compounding of tectonic systems and tectonic evolution of geomechanics, an analysis has been made on features of single fault crush belts, compound fault crush belts, conjoining fault crush belts, and their influence on stability of tunnel rock, which were confirmed in the field cases of Xiamen sub-sea tunnel. The results show that conjoining fault crush belts and compound fault crush belts can easily lead to unstability of rock, and other factors of faults, such asweathering and the angle between faults strike and tunnel axis strike, also have obvious influence on stability of tunnel rock. The study can offer significant reference for tunnel construction.
- fault crush belts /
- tunnel /
- stability

HTML全文

图 1 NWW290°走向的断层切割NEE25°走向的二长岩岩脉

Figure 1. NWW 295° -striking fault crush belts cutting NNE 25° -striking vein

下载: 全尺寸图片幻灯片

图 2 掌子面拱顶发生的小型坍塌

Figure 2. The collapsing of arch

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图 3 初期支护开裂

Figure 3. The fracture of preliminary lining

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图 4 NWW 295°走向的密集节理带

Figure 4. Dense NWW295° -striking joint planes

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