隧道建设
隧道建設
수도건설
TUNNEL CONSTRUCTION
2015年
6期
595-600
,共6页
隧道%钻爆法%爆破施工%减振孔%爆破振动监测
隧道%鑽爆法%爆破施工%減振孔%爆破振動鑑測
수도%찬폭법%폭파시공%감진공%폭파진동감측
tunnel%drilling and blasting method%blasting construction%vibration-reducing hole%blasting vibration mo-nitoring
浅埋暗挖车站下穿岩石地层大多采用钻爆法施工，不可避免地对周边建（构）筑物产生振动效应。以青岛地铁某浅埋暗挖车站为例，为避免爆破施工对周边加油站等高爆炸隐患工程影响过大，施工中采取布设减振孔措施，现场开展减振孔减振效果测试试验，在受保护区打286个减振孔，对受保护区监测点和与爆心相同距离的非保护区监测点同时进行连续15 d 爆破振速监测，对监测数据进行对比分析。研究结果表明：减振孔措施有效降低了爆破振动对周边环境的影响，振速平均衰减比例达到35．4％，较好地保证了周边高风险建（构）筑物的安全。
淺埋暗挖車站下穿巖石地層大多採用鑽爆法施工，不可避免地對週邊建（構）築物產生振動效應。以青島地鐵某淺埋暗挖車站為例，為避免爆破施工對週邊加油站等高爆炸隱患工程影響過大，施工中採取佈設減振孔措施，現場開展減振孔減振效果測試試驗，在受保護區打286箇減振孔，對受保護區鑑測點和與爆心相同距離的非保護區鑑測點同時進行連續15 d 爆破振速鑑測，對鑑測數據進行對比分析。研究結果錶明：減振孔措施有效降低瞭爆破振動對週邊環境的影響，振速平均衰減比例達到35．4％，較好地保證瞭週邊高風險建（構）築物的安全。
천매암알차참하천암석지층대다채용찬폭법시공，불가피면지대주변건（구）축물산생진동효응。이청도지철모천매암알차참위례，위피면폭파시공대주변가유참등고폭작은환공정영향과대，시공중채취포설감진공조시，현장개전감진공감진효과측시시험，재수보호구타286개감진공，대수보호구감측점화여폭심상동거리적비보호구감측점동시진행련속15 d 폭파진속감측，대감측수거진행대비분석。연구결과표명：감진공조시유효강저료폭파진동대주변배경적영향，진속평균쇠감비례체도35．4％，교호지보증료주변고풍험건（구）축물적안전。
Drilling and blasting method is often used in the construction of shallow-buried Metro stations located in rock strata,and it is inevitable that vibration effect may occur to the surrounding buildings.In this paper,vibration-reducing holes are used in the blasting construction of a shallow-buried station of Qingdao Metro,so as to minimize the impact on the surrounding buildings.A series of tests and monitoring have been carried out for the vibration-reducing holes,blas-ting vibration velocity and vibration-damping effect.The results show that the influence on the surrounding buildings has been reduced by using vibration-reducing holes,the average vibration velocity attenuation ratio reaches 35.4%,and the safety of the surrounding buildings has been guaranteed.
