一、前言在水平自由面近处起爆一定量炸药包,爆后将形成爆破漏斗。按照被爆岩石破碎后的抛掷情况,爆破漏斗一般分为抛掷爆破漏斗和松动爆破漏斗,前者破碎岩石大部抛出漏斗坑之外,部分回落坑内;后者破碎岩石基本留在漏斗坑内,没有或极少抛出坑外,原地松动的碎石在自由面上一般均有鼓包形成。在一个自由面条件下,爆后能形成爆破漏斗的爆破一般称为“漏斗爆破”,它是相对于两个自由面条件下进行的台阶爆破而言的。对松动爆破漏斗的研究,不仅是爆破机 I. INTRODUCTION A certain amount of explosives will be detonated near the horizontal free surface, and a blasting funnel will be formed after the explosion. Blasting funnels are generally divided into thrown blasting funnel and loose blasting funnel according to the throwing situation after the crushed rock is broken. Most of the former crushing rocks are thrown out of the funnel pit and partly fall back into the pit. The latter crushed rocks are basically left in the funnel pit without or Rarely thrown out of the pit, the loose rock gravel in the free surface are generally formed drum kits. In a free-surface condition, a blast that forms the blasting funnel after a blast is generally called a “funnel blasting”, which is relative to bench blasting under two free-surface conditions. Research on loose blast funnels is not only a blasting machine