论文部分内容阅读
供吹洗炮孔用的气体有两个基本参数——耗气量和气压。耗气量所决定的是清洗炮孔的效率,而气压所表征的则是气体要克服的压缩空气传送系统的阻力。耗气量与气压决定着钻机空气压缩装置的参数和传送中所需要的能量。钻机空气压缩装置所需排量F_K依赖于产生岩粉的强度、岩粉的粒度、钻具的结构和参数以及岩粉在炮孔底附近区和沿着吹洗空间运动的条件。在确定所需排量F_K时要结合筛分的数据或按粒度预测划分岩粉的情
The gas used to purge the borehole has two basic parameters - air consumption and air pressure. Gas consumption is determined by the efficiency of cleaning the bore, while the pressure is characterized by gas to overcome the compressed air delivery system resistance. Air consumption and air pressure determine the air compressor rig parameters and transmission energy required. The required displacement F_K for the rig air compressor depends on the strength at which the rock powder is produced, the particle size of the rock dust, the structure and parameters of the drilling tool, and the conditions at which rock dust moves near the bottom of the blasthole and along the purge space. In determining the required displacement F_K when combined with the screening data or particle size prediction of rock powder