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我们曾在普氏硬度系数f=6-8级的岩石、掘进断面为1．8×2米的独头巷道中试验了几次手工快速掘进,取得了日掘7．8米、10．4米和11米的成绩。所用方法是:1．浅打眼多放炮以及打眼与出碴平行作业法。最初,我们采用的炮眼深度为1．5-1．6米,爆破效果不良,残眼一般在10-15厘米,后来利用0．8-0．9米的炮眼,爆破效果较好,并且威力很大,有时能把靠近工作面的支柱打垮,证明还有潜力可挖,以后便把炮眼适当加深到1．1- 1．2米,效果最好(见表1)。在每
We have tested several manual fast headings in rock with a Prussian hardness coefficient of f = 6-8 and a single-headed tunnel of 1.8 × 2 m in heading, and achieved 7.8 m, 10.4 m Meter and 11 meter results. The method used is: 1. Light hit the eye more blasting and drilling and ballast parallel operation method. Initially, we use the blasthole depth of 1.5-1.6 meters, the blasting effect is poor, the residual eye is generally 10-15 cm, and later the use of 0.8-0.9 meters of blasthole, the blasting effect is better, and the power Large, sometimes can collapse the pillar close to the work surface, prove there is potential to dig, then put the hole to 1.1-1.2 m deepened appropriately, the best (see Table 1). In every