| 富水砂卵石地层盾构法施工地表坍塌原因及对策 |
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| 引用本文： | 杨书江.富水砂卵石地层盾构法施工地表坍塌原因及对策[J].都市快轨交通,2011,24(1):77-79. |
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| 作者姓名： | 杨书江 |
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| 作者单位： | 中铁隧道股份有限公司,郑州,450003 |
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| 基金项目： | 四川省重点建设项目(发改投资[2005]2440号) |
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| 摘 要： | 分析成都地铁工程因高富水、卵石含量高、强度高造成盾构施工困难的情况,通过不断摸索实践,基本解决了富水砂卵石地层长距离快速掘进的难题.论述由于砂卵石地层的自稳特性,地表沉降表现出一定的滞后性,给工程带来安全隐患,对地表坍塌原因进行初步分析,并结合工程实践提出相应的施工对策.
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| 关 键 词： | 城市轨道交通 富水砂卵石地层 盾构施工 地表坍塌 原因 对策 |
| 修稿时间： | 2013/12/12 0:00:00 |
Causes of Surface Collapse in Water-rich Sand and Gravel Stratum during Shield Tunneling and Countermeasures |
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| Yang Shujiang.Causes of Surface Collapse in Water-rich Sand and Gravel Stratum during Shield Tunneling and Countermeasures[J].Urban Rapid Rail Transit,2011,24(1):77-79. |
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| Authors: | Yang Shujiang |
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| Institution: | Yang Shujiang(China Railway Tunnel Co.,Ltd.,Zhengzhou 450003) |
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| Abstract: | Chengdu metro projects present difficulties for shield tunneling due to the stratum with high water content,large gravel content and gravels with high strength.Long distance rapid excavation through this kind of stratum has been realized through constant endeavor and practice.Because of the self-stabilization characteristics of sand and gravel stratum,a surface collapse occurred with certain lag behind the excavation,which caused hidden dangers to the project.This article makes a preliminary analysis of the... |
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| Keywords: | urban rail transit water-rich sand and gravel stratum shield tunneling surface collapse cause analysis countermeasures |
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