合理延迟时间的理论分析和试验研究

Theoretical Analysis and Experiment Research on Reasonable Delay Time of Millisecond Blasting

先行理论分析建立岩巷掘进爆破合理延迟时间的计算公式，而后模型试验研究并优化，并据此进行工业试验．结果表明：５０ｍｓ的延迟时间可以改善破碎效果和减少抛掷距离，并能明显提高岩巷掘进速度．

The calculation method of reasonable delay time of millisecond blasting in rock drifting is put forward. Based on the delay time, model experiment and industrial experiment have been carried out. The result shows that well blasting effect and drifting velocity can be gained with electric detonator with 50ms delay time.