城市隧道开挖爆破对古城墙的安全影响研究
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摘要
南京九华山隧道工程,在城市中建设,周边环境要求高,穿越明代古城墙施工段面临如何确保古城墙安全的问题,是施工的难点之一。通过计算分析确定隧道开挖爆破震动对明古城墙的影响范围,详细介绍了控制围岩沉降、控制爆破振动效应等确保古城墙安全所采用的技术措施;通过所进行的监测工作,证明了所采用技术措施的有效性。对城市隧道工程建设中的环境保护问题具有重要的应用价值。
Big-double-arch structure form is used in Nanjing Jiuhuashan Tunnel.The pruject features big fly-past,complex geology and higher demand on environment protection that make it very representative in double-arch tunnels. In order to protect the ancient city-wall where the tunnel passes through,it is necessary to estimate the safety of the ancient city wall under the influence of blasting of tunnel excavation.Several popular vibration velocity and vibration frequency formula are used to calculate the extent and range of the influence of blasting of tunnel excavation on ancient city wall.Several technological methods are in detail introduced.The methods are testified effectivey through monitoring work.
Big-double-arch structure form is used in Nanjing Jiuhuashan Tunnel.The pruject features big fly-past,complex geology and higher demand on environment protection that make it very representative in double-arch tunnels. In order to protect the ancient city-wall where the tunnel passes through,it is necessary to estimate the safety of the ancient city wall under the influence of blasting of tunnel excavation.Several popular vibration velocity and vibration frequency formula are used to calculate the extent and range of the influence of blasting of tunnel excavation on ancient city wall.Several technological methods are in detail introduced.The methods are testified effectivey through monitoring work.
引文
[1]GB6722—2003爆破安全规程.北京:中国标准出版社,2004
[2]吴德伦,叶晓明.工程爆破安全振动速度综合研究.岩石力学与工程学报,1997,16(3):266-272
[3]张世雄.预测爆破波振动强度的经验公式及其在采矿中的应用.爆破,2000,17(3):13-17
[4]张云鹏,李存国.爆破地震效应安全判据的发展.河北理工学院学报,2003,25(3):119-123
[5]杨文渊.工程爆破常用数据手册.北京:人民交通出版社,2002
[6]焦永斌.爆破地震安全评定标准初探.爆破,1995(9):45-47
[7]李端明,张志呈,肖学正.爆破地震波的频率特性.西南工学院学报,2004,13(3):43-48
[8]王冰,谭跃虎,何中刚.双连拱隧道通过古城墙施工技术.施工技术,2006,35(7):70-72
[2]吴德伦,叶晓明.工程爆破安全振动速度综合研究.岩石力学与工程学报,1997,16(3):266-272
[3]张世雄.预测爆破波振动强度的经验公式及其在采矿中的应用.爆破,2000,17(3):13-17
[4]张云鹏,李存国.爆破地震效应安全判据的发展.河北理工学院学报,2003,25(3):119-123
[5]杨文渊.工程爆破常用数据手册.北京:人民交通出版社,2002
[6]焦永斌.爆破地震安全评定标准初探.爆破,1995(9):45-47
[7]李端明,张志呈,肖学正.爆破地震波的频率特性.西南工学院学报,2004,13(3):43-48
[8]王冰,谭跃虎,何中刚.双连拱隧道通过古城墙施工技术.施工技术,2006,35(7):70-72
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