立井冻结段爆破施工安全技术

Safe blast process technique for shaft freezing section

通过对冻结孔测斜成果进行分析 ,采用松动爆破及对冻结管的保护等措施 ,提高了井筒掘进施工速度 ,减轻了工人劳动强度 ,保证了井筒内冻结管不遭震动破坏 。

Though analyzing on the survey inclination result of freezing hole,adopt the measures of loosen blast and freezing pipe pretection to lift the shaf tdriving speed,reduce worker's work strengh,ensure the freezing pipe without shock destruction and make good construction result.