主厂房系统爆破开挖程序和开挖方法，最直接地影响着整个工程工期、质量、安全及成本。
The excavation sequence and excavation method of the main carven system affect directly the completion date, quality, safety and cost of the project.
如何结合工程具体特点，确定最优的爆破开挖程序和开挖方法，这是主厂房系统爆破开挖的关键所在。
The key problem of the excavation of the main carven system is to determine the best excavation sequence and excavation options according to the concrete features of the project.
分段爆破会产主地震动的叠加，叠加系数直接关系到等效药量的计算。
The sectional blasting will produce superposition of ground motion the superposition factor is directly related to the calculation of equivalent amount of explosive.
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