浅埋隧道地表密集建(构)筑物评估及对策
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摘要
长洪岭隧道近距下穿密集民房,施工前对房屋做了详细的鉴定,并采集了爆破震速频率范围,通过专家风险评估设定了爆破震速控制限值,给出了指导性施工措施;考虑到与非下穿段的延续性和相容性,为充分发挥现有设备等资源配置,选择了震速可控,且安全、经济和快速的全断面分部减震爆破开挖方法,以及控爆与非爆相结合的施工方法,导洞非爆破方法因地制宜地选择了重庆地区广泛采用的水磨钻法。施工中将震速监测纳入工序管理,并高度重视与地方居民的协调工作;最终实现了安全下穿施工。文章总结了钻爆法浅埋长距离下穿密集民房的隧道施工要点,指出了钻爆法浅埋隧道地表密集建(构)筑物鉴定评估的重要性。
Changhongling Tunnel is located beneath the dense residential houses and evaluations of buildings was taken concerning this.It collected the frequency scope of blasting vibration velocity and set the limited values based on risk assessment and gave the guiding measures.In view of the continuity and compatibility of the ground section,it took the full-face blasting with vibration absorption part by part and combined blasting.The water mill drilling was adopted in the non-blasting construction of adit.Additionally the monitoring of vibration velocity was taken in the procedure management.In this article it summarizes the key points of drill and blast construction of tunnel beneath dense residential houses and explains the significance of evaluation of the residential houses.
Changhongling Tunnel is located beneath the dense residential houses and evaluations of buildings was taken concerning this.It collected the frequency scope of blasting vibration velocity and set the limited values based on risk assessment and gave the guiding measures.In view of the continuity and compatibility of the ground section,it took the full-face blasting with vibration absorption part by part and combined blasting.The water mill drilling was adopted in the non-blasting construction of adit.Additionally the monitoring of vibration velocity was taken in the procedure management.In this article it summarizes the key points of drill and blast construction of tunnel beneath dense residential houses and explains the significance of evaluation of the residential houses.
引文
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[3]刘招伟,方俊波.复杂环境条件下地下工程微振爆破施工技术探讨[J].隧道建设,2003,23(4):5-7Liu Zhaowei,Fang Junbo.Discussion on Micro-vibration Blasting Technology for Underground Engineering in ComplexEnvironmental Conditions[J].Tunnel Construction,2003,23(4):5-7
[4]朱赞成,徐化祥.广州地铁三号线连拱隧道微震爆破设计[J].爆破,2007,24(3):110-113Zhu Zanchen,Xu Huaxiang.Design of Slight Vibration Blasting for Buried Excavation for No 3 Multiple-arch Tunnel inGuangzhou[J].Blasting,2007,24(3):110-113
[5]张欣,李术才.爆破荷载作用下青岛胶州湾海底隧道覆盖岩层稳定性分析[J].岩石力学与工程学报,2007,26(11):2348-2355Zhang Xin,Li Shucai.Stability Aanlysis of Rock Cover of Qingdao Kiaochow Bay Subsea Tunnel under Explosive Load[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(11):2348-2355
[6]朱益军,戴显荣,杜国其,朱向荣.静态破碎法在隧道洞顶危岩处理中的应用[J].中国市政工程,2005,(3):46-48Zhu Yijun,Dai Xianrong,Du Guoqi,Zhu Xiangrong.Application of Static Breaking Method for Dangerous Rock on Opening ofTunnel[J].China Municipal Engineering,2005,(3):46-48
[7]项志敏,苟彪,等.浏阳河隧道铣挖法工艺试验研究[J].铁道标准设计,2007,(z1):74-78Xiang Zhimin,Gou Biao,et al.Research on Technological Tests for Milling Excavation Method in Liuyanghe Tunnel[J].RailwayStandard Design,2007,(Supp1):74-78
[8]中华人民共和国行业标准.JGJ125-99危险房屋鉴定标准[S].北京:中国建筑工业出版社,2000Industrial Standard of the People's Republic of China.JGJ125-99 Standard of Dangerous Building Appraisal[S].Beijing:ChinaArchitecture&Building Press,2000
[9]王梦恕,洪开荣,等.中国隧道及地下工程修建技术[M].北京:人民交通出版社,2010Wang Mengshu,Hong Kairong,et al.Tunnelling and Underground Engineering Technology in China[M].Beijing:ChinaCommunications Press,2010
[10]中华人民共和国铁道部.TB10121-2007,J721-2007铁路隧道监控量测技术规程[S].北京:中国铁道出版社,2007Ministry of Railways of the People's Republic of China.TB10121-2007,J721-2007 Technical Code for Monitoring Measurementof Railway Tunnel[S].Beijing:China Railway Publishing House,2007
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