By a blasting method of combining long holes with short holes, 30 big reinforced concrete bridge piers of the old '8.1bridge in Nanchang were demolished.
通过深孔和浅孔爆破相结合的方法，拆除了南昌老八一大桥30个水中大型钢筋混凝土桥墩。
By a blasting method of combining long holes with short holes, 30 big reinforced concrete bridge piers of the old '8.1bridge in Nanchang were demolished.
通过深孔和浅孔爆破相结合的方法，拆除了南昌老八一大桥30个水中大型钢筋混凝土桥墩。
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