In the controlled blasting of digging the Co-radiation shelter-well, the perforators and cutters areused to dig the reinforced concrete structure shelter-well which is dug difficutly with engines.

• 用控制爆破法掘深钻放射防护井,对难以用机械钻孔的钢筋混凝土整体结构的防护井,采用射孔器射孔和切割器切割钢筋的办法,得到了令人满意的结果。