大直径中深孔在桥梁爆破中的应用探讨

摘要

At this stage,the stone arch bridge and the reinforced concrete double-curvature arch bridge are mostly demolished by drilling φ 32mm hole. According to the experience of many bridges demolished,the feasibility with large diameter mid-deep bole blasting is analyzed. It is result that the mid-deep hole blasting has more secure, high quality, rapid, economical than traditional methods.%现阶段石拱桥、钢筋混凝土双曲拱桥,大多采用手风钻小直径炮孔爆破拆除.根据多座桥梁爆破拆除工程实践,分析了大直径中深孔爆破拆除的可行性.得出了采用中深孔比常规小孔爆破法更安全、优质、快速、经济.