【摘要】 在现场进行了集中药包与分集药包硐室爆破的大量模拟试验。文中对两种药包产生的爆破漏斗和抛掷堆积效果进行了分析 ,并就两种药包产生的爆破漏斗的上、下破裂线和深度以及最远抛距等参数的试验值与计算值进行了对比。同时 ,对分集药包最佳间距进行了研究。试验得出的结论是 :在定向爆破筑坝中 ,可以采用分集药包改善抛掷堆积效果 ;在按经验公式计算的药量不变的前提下 ,存在一个有利于抛掷堆积的分集药包“最佳间距”。更多还原

【Abstract】 A large number of simulation tests for chamber blasting with concentrated or sub-concentrated charges were carried out in a site.The blasting cone and throwing-piling effect resulted from two kinds of charges were analyzed.The comparison between the tested and calculated vales of parameters such as upper- and down- broken lines and depth of the blasting cone and the maximum throwing distance for two kinds of charges was made.At the same time,the optimal spacing of sub-concentrated charges was investigated.It is concluded from the tests that the sub-concentrated charge could be used for improvement of throwing-piling effect in the construction of a dam by directional blasting and there is an optimal spacing of sub-concentrated charge favorable to throwing-piling on the condition of constant charge weight calculated by an empiric formula.更多还原