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介绍了岩巷施工中，中深孔定向断裂爆破的工艺过程，并将施工结果与中深孔光面爆破进行了分析比较，该技术不仅有其优越性，而且有显著的经济效益。
The technological process of medium - deep hole directional fracture blasting in rock roadway construction is introduced. The construction results are compared with the medium - deep hole smooth blasting. The technology not only has its advantages, but also has obvious economic benefits.