工程爆破引起的振动速度计算经验公式及应用条件探讨

摘要

The calculation formulas for blasting vibration velocity in engineering were summurized. Based on similarity theory, the formula to estimate the blasting vibration velocity was derived. Under the same terrain, geological conditions and with the same amount of explosives, the ground vibration velocity depends on the maximum amount of primary explosive (Q), distance from explosion source to measuring point (R) and blasting action index (n). The calculation formula, put forward by previous USSR scholar, is effective only at the conditions of standard throw blasting and concentrated cartridge. According to equivalence principle , linearly distributed charge was assumed as numerous equivalent concentrated charges and the equation of deep-hole blasting was derived, which is getting success in practical engineering applications.%分析总结了工程爆破界对于爆破振动速度计算的经验公式.根据相似理论,推导了爆破振动速度计算的公式.研究结果发现,在地形、地质和使用炸药种类不变的情况下,爆破引起的地面振动速度与最大起爆药量Q、爆源距测点的直线距离R、以及爆破作用指数n有关.只有在集中药包、标准抛掷爆破条件下,爆破振动速度的计算公式,才适合于前苏联学者萨道夫斯基提出的经验公式.把深孔直列药包,假定为无数个等效集中药包,提出了深孔爆破的振动速度计算公式,并应用于工程实际中.