浏阳河隧道过风化槽段施工安全性评估
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Release time:2020-08-09 Journal:中南大学学报(自然科学版) Place of Publication:中国 Key Words:隧道工程；风化槽地段；强度折减法；安全系数 Abstract:针对浏阳河隧道过风化槽地段施工过程中遇到的易坍塌等问题,分析其主要原因,据现场情况修正原方案,提出施工应对措施,如加强超前地质预报和初期支护,采用"台阶法+竖向钢支撑"的开挖方法,进而应用数值模拟和现场监测分析其安全性,并基于强度折减法研究隧道整体稳定性。研究结果表明:竖向支撑可以很好地减少拱顶沉降;隧道安全系数为1.8,且应以拱顶沉降作为围岩失稳的主要指标。其研究成果可为同类隧道工程过风化槽等地段施工提供参考。 Co-author:丁国华, 彭立敏, 彭建国, 安永林, 冯德山 First Author:黄戡 Indexed by:Applied Research Document Code:1672-7207(2011 )03-0803-07 Discipline:土木工程 Document Type:J Volume:42 Issue:3 Page Number:803-809 ISSN No.:1672-7207 Translation or Not:no CN No.:43-1426/N Date of Publication:2011-03-26 Included Journals:EI -
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