城市大跨度隧道爆破对地面建筑物影响的研究
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摘要
以嘉华隧道工程开挖为研究对象,应用安全系统工程中的事故树法对爆破振动影响区域内的地面建筑物进行定性分析,找出影响地面建筑物稳定的最小割集;求出各基本事件的结构重要度,为后续监测和施工方案的调整提供理论依据。结合现场实际情况,制定合理的爆破地震波的振动监测方案。同时,对爆破振动监测结果的回归分析,确立振动传播衰减规律。分别从振动速度和峰值频率两个方面对地面建筑物的安全性进行评价。笔者研究成果对指导隧道工程开挖爆破施工和保证地面建筑物安全有重要指导作用。
Based on the excavation of Jiahua tunnel project,the damage status of the ground buildings in the blast vibration area was qualitatively analyzed by using the method of fault tree analysis in safety system engineering,and the minimal cut sets affecting stability of the ground buildings were found out.The structure importance of each basic event was calculated,which provided theoretical basis for the following monitoring and the adjustment of construction plan.According to the actual condition on the site,the reasonable vibration monitoring plan for blasting seismic wave was established.Meanwhile,the attenuation laws of explosion vibration propagation were put forward by use of regression analysis on the monitoring results of blasting vibration.Finally,safety assessment was made on the ground buildings from vibration velocity and peak frequency.This study plays an important role in guiding the excavation blasting construction of the tunnel project and assuring the safety of ground buildings.
Based on the excavation of Jiahua tunnel project,the damage status of the ground buildings in the blast vibration area was qualitatively analyzed by using the method of fault tree analysis in safety system engineering,and the minimal cut sets affecting stability of the ground buildings were found out.The structure importance of each basic event was calculated,which provided theoretical basis for the following monitoring and the adjustment of construction plan.According to the actual condition on the site,the reasonable vibration monitoring plan for blasting seismic wave was established.Meanwhile,the attenuation laws of explosion vibration propagation were put forward by use of regression analysis on the monitoring results of blasting vibration.Finally,safety assessment was made on the ground buildings from vibration velocity and peak frequency.This study plays an important role in guiding the excavation blasting construction of the tunnel project and assuring the safety of ground buildings.
引文
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[13]杨大地.实用数值分析[M].重庆:重庆大学出版社,2004
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[2]杨光群,冯孝杰,殷建.宝成铁路复线广元皇泽寺隧道施工中爆破振动对“女皇山庄”影响评价的探讨[J].噪声与振动控制,1996,16(1):26～30
[3]金太平.隧道爆破与边坡崩塌之关系分析[J].西部探矿工程,2006,(4):179～180
[4]方俊波,崔天麟.浅埋地铁区间爆破对地表建筑物的震动影响[A].第六届全路工程爆破学术会议论文集[C],2000:326～331
[5]刘小春,谷新建,李方.城市控制爆破工程的爆破事故和爆破公害研究[J].中国安全科学学报,2002,12(6):44～47
[6]陈庆,王宏图,胡国忠等.隧道开挖施工的爆破振动监测与控制技术[J].岩土力学,2005,26(6):964～967
[7]高振懦,方向,刘强等.MINI-SEIS地震仪在爆破振动监测中的应用[J].爆破,2002,19(1):81～83
[8]GB6722—2003,爆破安全规程[S],2003
[9]中华人民共和国水利部.大爆破安全规程[S].GB13349—1992,1992
[10]水工建筑物岩石基础开挖工程施工技术规范(SL—1994)[S].北京:水利电力出版社,1994
[11]尹志政,张家生,阳生权.厦门云顶隧道爆破监测与分析[J].中国安全科学学报,2005,15(9):109～112
[12]迟明杰,赵成刚,杨小林等.岩溶区隧道爆破开挖地震危害控制的研究[J].中国安全科学学报,2004,14(9):68～71
[13]杨大地.实用数值分析[M].重庆:重庆大学出版社,2004
[14]张志呈.浅谈评价爆破地震效应的方法和标准[J].爆破器材,1998,27(3):32～35
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