Blaststressfieldoflinearexplosivechargeanditsapplication tomedium-depthholeblastinginundergroundmine
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摘要: 针对球形集中药包理论指导中深孔爆破设计时与实际情况严重不符的现状,设计了2种实验模 型,采用全息激光动光弹法进行了模型实验,研究了球形药包与柱状药包爆炸应力场、柱状药包在不同起爆位 置时的爆炸应力场。将实验结果与现场实际情况相结合,通过对排距(最小抵抗线)、孔底距和炸药在孔内起 爆位置进行的44排拟水平现场正交实验,确定了合理的爆破技术参数,取得了良好的爆破效果。Abstract: Aimedatthefactthatthetheoreticalguidanceforthesphericalconcentratedchargeblasting haveadiscrepancywiththeactualstatusinthedesignofthemedium-depthholeblasting,twotypes ofexperimentalmodelswereproposed.Modelexperimentswerecarriedoutbyusingholographiclaser dynamicphoto-elasticitytoexploretheexplosionstressfieldsofglobularcharge,andwhichoflinear chargedetonatedatdifferentpoints.Nineorthogonaltests(forty-fourrows)insitewereconductedaboutrowspacing( theminimumresistanceline),holefacedistanceanddetonationpointinborehole toobtainsuitblastingparametersbycombiningtheexperimentalresultsandfineblastingeffectswere got.
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