CAJ | 학술논문

在城市建筑和地下管线密集区域浅埋地铁隧道矿山法掘进施工中，控制爆破所产生的地震效应对地表建筑和地下管线的危害是关键。通过施工分析和方案优化，采用0.7 m短循环进尺、3 m长度小台阶、50 ms时间间隔延期起爆的松动爆破方法和合理爆破参数体系，在保证水平距离仅3.7 m砖混房屋和隧道上方各类地下管线安全情况下加快了施工进度。通过大量仪器监测和实际观察，提出闹市区隧道爆破时地表砖混结构建筑物允许安全振速1.5 cm/s为宜。
재성시건축화지하관선밀집구역천매지철수도광산법굴진시공중，공제폭파소산생적지진효응대지표건축화지하관선적위해시관건。통과시공분석화방안우화，채용0.7 m단순배진척、3 m장도소태계、50 ms시간간격연기기폭적송동폭파방법화합리폭파삼수체계，재보증수평거리부3.7 m전혼방옥화수도상방각류지하관선안전정황하가쾌료시공진도。통과대량의기감측화실제관찰，제출료시구수도폭파시지표전혼결구건축물윤허안전진속1.5 cm/s위의。
Through the construction analysis and scheme optimization,desided take the method of loosening blas-ting-the 50ms delay blasting of 0. 7 m short circulation drilling footage and 3 m low-bench and reasonable blasting parameters system,in the construction of shallow-buried tunnel driving blasting under the area of dense urban archi-tecture and under-ground utilities,the point is control the damage of earthquake effect of controlled blasting to the a-bove-ground structures and under-ground utilities. At the circumastance of ensure the brick-cement building( the ho-rizon range to the right above of tunnel is 3. 7 m)and various under-ground utilities safe. Througe many instrument monitoring and real course,put forward the allowed safety vibration velocity of the above-ground brick structure build-ing under the circumstance of the tunnel driving blasting in downtown should bellow 1. 5 cm/s.