摘要
尖山铁矿主平硐施工中,由于合理选择光面爆破参数,采用垂直楔形掏槽“四步打眼法”,不断改善爆破质量,以砂浆锚杆喷锚支护,使隧道日成巷达124.5m且质量优良。
Owing to the reasonable choice of smooth bl asting parameters,and the use of straight wedge cut named“four steps drilling”in the construction of the main adit in Jianshan iron mine,the quality of blasting improved constantiy.A spoed of 124.5 meters per month of completed adit with bolt-shotcrete supporting was reached with quite good quality.
出处
《冶金矿山设计与建设》
1995年第1期37-40,48,共5页
Metal Mine Design & Construction
关键词
巷道支护
平硐
锚喷支护
光面爆破
铁矿床
Development adit Bolting-shotcreting support Smooth blasting Engineering construction