The Tunnel blasting in the hilltop of Jianshan Iron Mine is measured really by highspeed photography in site,and the swelling and throwing phenomena of blasting rock is described.

• 采用高速摄影双测技术对尖山铁矿山头硐室大爆破过程进行现场实测，描述了岩石鼓包、抛掷等现象。