青岛海底隧道导洞扩挖法导洞位置比选研究
|
摘要
以青岛海底隧道开挖工程为背景,利用TBM导洞先行开挖,然后钻爆法扩挖,对隧道开挖过程进行数值模拟,研究导洞位置不同对地表建筑物爆破振动的影响,结果表明:三种导洞位置方案中,导洞位置在正中上部较其他方案中监测点峰值合成振动速度小;建筑物上监测点位置在爆破开挖面正上方的峰值合成振动速度最大;随着导洞位置下移,建筑物上监测点峰值合成振动速度随之增大。
Take Qingdao submarine tunnel project as the background,use TBM pilot-heading enlarging method,then drill and burst method of excavation,we performed numerical simulation on the submarine tunnel,studied the influence of different pilot hole positions on blasting vibration of surface buildings,choose the right guide hole location,the following conclusions are drawn: between three kinds of pilot hole location scheme,the peak resultant vibration velocity of the position of the pilot hole in the middle and upper part is lower than monitoring points in other schemes; the peak resultant vibration velocity of the monitoring point position on the blasting section of the building is the largest; as the pilot hole position moves down,the peak resultant vibration velocities of the monitoring points on the building increase.
Take Qingdao submarine tunnel project as the background,use TBM pilot-heading enlarging method,then drill and burst method of excavation,we performed numerical simulation on the submarine tunnel,studied the influence of different pilot hole positions on blasting vibration of surface buildings,choose the right guide hole location,the following conclusions are drawn: between three kinds of pilot hole location scheme,the peak resultant vibration velocity of the position of the pilot hole in the middle and upper part is lower than monitoring points in other schemes; the peak resultant vibration velocity of the monitoring point position on the blasting section of the building is the largest; as the pilot hole position moves down,the peak resultant vibration velocities of the monitoring points on the building increase.
引文
[1]马蒙,刘维宁.采用TBM导洞扩挖方法修建长大隧道探讨[J].隧道地下工程,2009(3):108-111.
[2]何川,丁建隆.配合盾构法修建地铁车站的技术方案[J].西南交通大学学报,2005(3):293-297.
[3]李围,何川,张海波.扩挖盾构隧道建成两连拱地铁车站模型试验[J].岩土力学,2008,29(12):3261-3265.
[4]叶飞,杨鹏博.基于模型试验的盾构隧道纵向刚度分析[J].岩土工程学报,2015,37(1):83-90.
[5]郑康成,丁文其.基于模型试验与FEM的TBM圆形隧道压力拱成拱规律[J].煤炭学报,2015,40(6):1270-1274.
[2]何川,丁建隆.配合盾构法修建地铁车站的技术方案[J].西南交通大学学报,2005(3):293-297.
[3]李围,何川,张海波.扩挖盾构隧道建成两连拱地铁车站模型试验[J].岩土力学,2008,29(12):3261-3265.
[4]叶飞,杨鹏博.基于模型试验的盾构隧道纵向刚度分析[J].岩土工程学报,2015,37(1):83-90.
[5]郑康成,丁文其.基于模型试验与FEM的TBM圆形隧道压力拱成拱规律[J].煤炭学报,2015,40(6):1270-1274.