我队坑道所掘进之岩石,大部分为中寒武纪、下寒武纪矽化白云石化白云岩,岩石等级按山地工作统一分类为4～6极,部分矽化较强的岩石达7～8级,靭性较大,爆破性不良。自56年开始机掘以来,由于深眼爆破未得到解决,台班功效的提高受到很大的限制(56年平均台班功效仅达1.18公尺,57年上升为1.31公尺)。有效眼深被限制在1.6～1.9公尺,虽经多次深眼爆破的尝试都告失败,平均炮眼利用系数不到0.5,因而在部分技术人员和工人当中,对深眼有着“神秘论”的思想认识。通过整风和社会主义教育运动以后,职工觉悟大大提高,特别是通过以反右倾和反保守为中心的双反运动,彻底批制了右倾保守思想,树立了敢想、敢说革新创造的思想作风,解除了长期对深眼作业的顾虑,断而试行深眼作业。 Most of the rocks excavated by the tunnel in our team are of the Middle Cambrian and Lower Cambrian dolomitization dolomite. The rock grades are classified into 4 to 6 poles according to the mountain work, and some of the silicified rocks reach 7 to 8 , Toughness, burst bad. Since the excavation started in 56 years, the improvement of the efficiency of the stage has been greatly limited due to the unresolved deep-hole blasting (the average annual power efficiency of 56 years has only reached 1.18 meters and the figure has risen to 1.31 meters in 57 years). Effective depth of field is limited to 1.6 to 1.9 meters, despite many attempts to blast deep failure, the average blasthole utilization factor of less than 0.5, which in some technicians and workers, the deep eye has a “mystery” Understanding of ideas. Through the rectification movement and the socialist education campaign, the awareness of staff and workers has risen greatly. In particular, through the anti-rightist and anti-conservative anti-conservative movement, the conservative thinking of the rightist people has been thoroughly criticized and the ideological style of daring to think and daring to talk about innovation and creation has been thoroughly criticized , Lifted the long-term concerns of deep-seated operations, broken and pilot deep-seated operations.