CAJ | 학술논문

重庆两江大桥渝中连接隧道途经民族路罗汉寺下方，采用钻爆法施工时可能危及寺中建筑物的安全。通过数值模拟分析，预估现有上下台阶爆破方案无法满足寺中罗汉堂的安全震动控制标准。针对这种情况提出上台阶机械开挖、下台阶爆破开挖的组合掘进方式，并根据计算确定该种掘进方法的使用范围。现场爆破震速实测验证表明，实测值与计算值间具有良好的吻合性，对地表震速的预估准确、可靠。
중경량강대교투중련접수도도경민족로라한사하방，채용찬폭법시공시가능위급사중건축물적안전。통과수치모의분석，예고현유상하태계폭파방안무법만족사중라한당적안전진동공제표준。침대저충정황제출상태계궤계개알、하태계폭파개알적조합굴진방식，병근거계산학정해충굴진방법적사용범위。현장폭파진속실측험증표명，실측치여계산치간구유량호적문합성，대지표진속적예고준학、가고。
Yuzhong connecting tunnel between Chongqing Liangjiang Bridges passes below Luohan Temple of Minzu Road, and construction in borehole-blasting method may endanger the safety of buildings in the temple. Based on the numerical simulated analysis, this paper estimates that the existing upper/lower steps blasting scheme cannot satisfy the control standard for safe vibration of Luohan Hall in the temple. Aiming at this case the paper proposes a combined advancing method of mechanical excavation for upper steps and blasting excavation for lower steps, and determines the scope of application of this advancing method according to calculation. Verification by measurement for blasting vibration velocity on site shows excellent coherence between the measured values and the calculated values, and accurate and reliable estimate for surface vibration velocity.