The relative problems ， whlchare charged factor that the part thro ’ blasting influence o 几 the divided charges and the choice of blasting network in chamber blasting ， are studied on the basis ofyuncheng ? ? sanmenxlaexpressway large scale blasting engineering in this paper firstly ， the latter chamber ’ s charged factor influenced by part throwblasting ， are discussed the comparable figobtained from above discussion can reflect the influence clearly the divided charges are studied systematically by theoretic analysis ， engineering calculate and simulated experiments the simulated experiments and engineering practice have been proved that intervals bet ’ een the divided charges ， which are engineering calculated ， are practicable ； and blasting effect s good in order to find proper blasting networks for types of chamber blasting ， several familiar nonelectrlcal blasting networks are analyzed and calculated by probability theory and numerical stat 本文以运城三门峡路堑大爆破工程为实验基础，对峒室爆破中局部抛掷对装药系数的影响、分装药包以及大爆破网路的选择等相关问题进行了研究。从大爆破装药系数分析了局部抛掷对后续药包的影响，并得到了它与常规装药系数的比较图，从而更直观地反映出局部抛掷对装药系数的影响。运用理论分析、工程计算和模拟实验相结合对分装药包进行了系统的研究。
