大断面岩巷快速掘进爆破参数优化摘要:为提高大断面岩巷掘进速度,对爆破参数进行了优化设计,同时还改进和优化了装岩运输方案
现场试验结果表明:优化后的爆破参数和装岩运输方案明显提高了岩巷掘进速度,月进尺由原来的60m提高到目前的90m
且爆破均匀,抛掷距离较小,爆破后巷道成型良好
该施工工艺高效、安全、可操作性强,对类似大断面岩巷中深孔爆破有指导意义
关键词:岩巷;快速掘进;爆破参数BlastingParameterOptimizationofRockDriftRapidExcavationonLargeSectionAbstract:Inordertoimprovetheexcavationvelocityofhardrockdrift,theblastingparametersandmuckingandtransportingschemeweredesignedandoptimized.ThesiteexperimentalresuItsshowthattheexcavationvelocityofrockdriftisgreatlyimproved,andthedrillfootagepermonthisincreasedtocurrent90metersfrom60meters.Afterblastingoperation,therockblastingfragmentationishomogeneous,castingdistanceissmall,anddriftmoldingisgood.Thisconstructiontechndogyishishefficient,safetyandenoughofmaneuverability,whichoffersguidanceforthesimilarengineering.Keywords:rockdrift;rap