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井巷掘进除了有良好的爆破效率、破碎块度外,还要看爆破后的轮廓是否平整、围岩振动情况、半眼率.因此良好的周边眼爆破参数应该使轮廓平整、对围岩震动小、半眼率高、整体爆破效率高,这样的周边眼爆破参数可减少支护和维护井(巷)而带来人力、物力、财力的浪费.周边眼爆破效果决定于周边眼的装药量、炮孔间距、最小抵抗线、装药结构.设计周边眼爆破参数主要以理论计算、工程类比、模拟试验和现场小型试验来进行.为此研究如何通过试验确定光面爆破参数,并提供一经验模型来具体地表达是有实际意义的.
In addition to good tunnel blasting efficiency, crushing block, but also depends on whether the profile after blasting is flat, surrounding rock vibration, half-eye rate.Therefore, a good peripheral eye blasting parameters should be smooth profile, small vibration on the surrounding rock , The half-eye rate is high, the overall blasting efficiency is high, so that the surrounding eye blasting parameters can reduce the waste of manpower, material and financial resources by supporting and maintaining the well (alley) .The peripheral eye blasting effect is determined by the charge of the peripheral eye, Hole spacing, minimum resistance line, charge structure.The design of peripheral eye blasting parameters is mainly carried out by theoretical calculation, engineering analogy, simulation test and on-site small-scale test.To study how to determine the parameters of smooth blasting through experiments and to provide an experience It is practical for the model to express concretely.