| 极破碎地质条件下的隧洞开挖施工技术 |
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| 引用本文： | 邱荣城.极破碎地质条件下的隧洞开挖施工技术[J].探矿工程,2006,33(5):55-58,61. |
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| 作者姓名： | 邱荣城 |
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| 作者单位： | 云南地质工程勘察有限公司隧道工程分公司 |
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| 摘 要： | 着重介绍在景洪水电站左岸下游渣场排水洞开挖施工中，对于Ⅴ类围岩洞段，针对不良地质条件下的隧洞开挖施工技术难点，应用超前小管棚预注浆、格栅钢架(或型钢支撑)、顶拱挂网、系统锚杆、喷射混凝土等多种支护措施，安全顺利地进行隧洞锁口和通过洞身段长达574 m的Ⅴ类围岩洞段，其中还包含3条断层破碎带。
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| 关 键 词： | 地质条件 锁口 开挖施工 小管棚 注浆 格栅 锚杆 |
| 收稿时间： | 2005/12/20 0:00:00 |
| 修稿时间： | 2005/12/20 0:00:00 |
Tunnel Excavation Tech. under Extremely Broken Geological Conditions |
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| QIU Rong-cheng.Tunnel Excavation Tech. under Extremely Broken Geological Conditions[J].Exploration Engineering(Drilling & Tunneling),2006,33(5):55-58,61. |
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| Authors: | QIU Rong-cheng |
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| Institution: | Tunnel Engineering Branch of Yunnan Geotechnical Survey Co. Limited |
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| Abstract: | The various measures, such as pre-casting through advanced installed pipe shed, grille steel frame or profiled bar support, top arch net, system rockbolt, and injecting concrete, were used to deal with the technical difficulties under bad geological conditions during excavation of tunnel within V type surrounding rocks. The tunnel section of 574 m length was safely excavated through V type surrounding rocks, including 3 broken belts. The fore shaft was successfully made. |
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| Keywords: | geological conditions fore shaft excavation small pipe shed casting grille rockbolt |
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