Study is presented on how to form a pilot channel for great water supply with the millisecond-delay blasting technique in front of the lock along the wide river bed of the lower Yellow River.

• 本文提出的微差爆破开槽冲刷成渠方法,是在湿滩的情况下,用微差爆破技术形成可以冲开的最小引槽,引水冲刷,最终形成闸前引水渠的成渠方法。