CAJ | 학술논문

根据计算钻孔孔径产生裂隙区范围的大小对炸药能量均衡分布的影响，从理论上分析了5m台阶，3.5m*4.5m梅花形布孔，加2.5m套孔爆破后出现2m以上超大块的原因；然后通过孔网参数、钻孔孔径、爆破网络延期时间之间的合理搭配，解决了低台阶、小孔网参数爆破时的超大块、根底严重的问题。并经过理论推导确定低台阶、小孔网参数爆破时的爆破参数合理搭配：（1）选用钻孔孔径产生的裂隙区范围小于相邻孔的孔间距离。（2）相邻孔的起爆时间间隔t要小于上孔爆破时对周围孔岩石形成鼓包并开始移动的时间间隔△t。
근거계산찬공공경산생렬극구범위적대소대작약능량균형분포적영향，종이론상분석료5m태계，3.5m*4.5m매화형포공，가2.5m투공폭파후출현2m이상초대괴적원인；연후통과공망삼수、찬공공경、폭파망락연기시간지간적합리탑배，해결료저태계、소공망삼수폭파시적초대괴、근저엄중적문제。병경과이론추도학정저태계、소공망삼수폭파시적폭파삼수합리탑배：（1）선용찬공공경산생적렬극구범위소우상린공적공간거리。（2）상린공적기폭시간간격t요소우상공폭파시대주위공암석형성고포병개시이동적시간간격△t。
According to the calculation on impacting dril hole size range of explosive fracture zones distributed energy balance, 5m from the theoretical analys is of the stairs, 3.5m*4.5m cinquefoil, The reason of appearing more than 2m super chunk after blasting with 2.5m sleeve;Then reasonable col ocating the network parameters through the hole, dril hole,and delay time of blasting network to solve the low-level, ultra-large of network parameters blasting, serious bedrock problem. And through theoretical analysis to determine a reasonable col ocation with the low-level and network parameters blasting holes process:(1). Dril ing diameter range selection fractured zones between adjacent holes resulting hole is smal er than the distance.(2).Time to rock around the hole formed adjacent holes initiation time interval t is less than the hole blasting drum kit and started moving interval△t.