Demolition of big bridge piers in water by long-hole blasting
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 ' 8.1 ' bridge in Nanchang were demolished .
八一大桥