针对曹家滩煤矿大断面煤巷智能快速掘锚成套装备与掘进工艺不匹配、无法实现完全平行作业等问题,为了提高掘锚一体化平行作业率,以现有技术设备为基础,开展了现场调研、跟班实测、理论分析及数值模拟,在实测掘进工作面工艺流程、人员配置、各工艺时间的基础上进行定量化与理论化研究,对截割、临时支护、永久支护等方面进行了优化。同时结合理论分析和数值模拟研究了锚杆密度、长度对巷道围岩变形的影响规律,在保证安全支护的前提下,提出锚杆减密加长的支护方案,即:在保证原有支护强度的前提下,通过增加锚杆长度和增大锚杆间距来缩短支护时间,提高支护效率,实现掘锚同步的平行作业。

During applying the complete set of equipment for intelligent and fast tunneling - bolting for large section coal roadway in Caojiatan Coal Mine, the equipment and tunneling process didn't coordinate, and the parallel operation could not be achieved. Based on the existing technology and equipment, in order to improve the parallel operation rate of integrated tunneling and bolting, on-site research, on-site monitoring, theoretical analysis, and numerical simulation were carried out. Based on the actual measurement of the excavation working face process, personnel configuration, and various process times, quantitative and theoretical research was carried out, and optimization was carried out in cutting, temporary support, permanent support, maintenance, and daily management. At the same time, combining theoretical analysis and numerical simulation, the influence of anchor density and length on the deformation of tunnel surrounding rock was studied. On the premise of ensuring safe support, a support scheme of reducing and lengthening bolt density was proposed. That is, while ensuring the original support strength, the support time was shortened by increasing the length and spacing of anchor bolts, thus to improve support efficiency, and achieve parallel operations of tunneling-bolting synchronization.