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为提高锚、网、喷支护质量,减少人、材、物的浪费,保证巷道的安全使用,我们在14采上部运输机巷采取了“三掘一喷”施工方法。施工巷道全断面分三次装药、三次放炮,实行光面爆破,周边眼预留光爆层,采用单段空气柱结构装药。由于巷道掘进成形规整,有利于提高支护质量,降低支护材料消耗,达到安全使用的目的。
In order to improve the quality of anchors, nets and spray supports, reduce the waste of people, materials and objects, and ensure the safe use of roadways, we adopted the construction method of “three digging and one spraying” in the upper conveyor lane of 14th mining. The whole section of the construction roadway is divided into three charges, three blasting operations, smoothing blasting, light burst layers reserved for the surrounding eyes, and a single-stage air column structure charge. Due to the regularity of tunneling and forming, it helps to improve the support quality, reduce the consumption of support materials and achieve the purpose of safe use.