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| 软岩大跨小间距双洞隧道洞口浅埋段开挖技术 | |
| 引用本文： | 黄新社,曹正喜. 软岩大跨小间距双洞隧道洞口浅埋段开挖技术[J]. 隧道建设, 2006, 26(4): 40-42,60 |
| 作者姓名： | 黄新社 曹正喜 |
| 作者单位： | 1. 中铁隧道集团杭州分公司,杭州,310030 2. 中铁隧道集团科研所,河南,洛阳,471009 |
| 摘 要： | 沈应线隧道工程位于较为繁华的舟山沈家门城区，长1230m，其南北出入口地质很差，多为全～强风化岩层的粘性土夹砾石，围岩稳定性差，主要通过理论计算、进度要求及方便施工等方面的比选，确定了适用于该工程洞口段的开挖技术方法。同时，介绍了洞口浅埋段的实际施工方案及效果。 |
| 关 键 词： | 大跨小间距 双洞隧道 开挖技术 比选 |
| 收稿时间： | 2006-02-22 |
| 修稿时间： | 2006-02-22 |
Excavation Technology of Shallow-buried Portal Section of Large-spanned Small-spaced Twin-tube Tunnel in Soft Ground |
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| HUANG Xin-she,CAO Zheng-xi. Excavation Technology of Shallow-buried Portal Section of Large-spanned Small-spaced Twin-tube Tunnel in Soft Ground[J]. Tunnel Construction, 2006, 26(4): 40-42,60 | |
| Authors: | HUANG Xin-she CAO Zheng-xi |
| Affiliation: | 1. Hangzhou Company of China Railway Tunnel Group Co. , Ltd. , Hangzhou 310030, China; 2. Scientific Research Institute of China Railway Tunnel Group Co. , Ltd. , Luoyang 471009, Henan, China |
| Abstract: | geological the ground Shengyingxian tunnel, being 1 230 m long, is located in the busy Shengjiamen urban area in Zhoushan. The conditions of the north entrance section and south entrance section of the tunnel are very poor, where most of is fully-weathered - heavily-weathered cohesive soil containing gravels. The surrounding ground of the tunnel has poor self-support ability. On basis of theoretical calculations and the requirements of the construction progress and construction convenience, excavation technology suitable for the portal sections of the tunnel is determined. Furthermore, the article also presents the actual construction scheme and construction results of the shallow-buried portal sections. |
| Keywords: | large span small spacing twin-tunnel excavation technology selection |
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