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我矿兰山2号溜井塌空区处理大爆破,是在面积为1.65万米~2塌空区上方进行的。实际掘进爆破坑道1937米,药室72个,装药量1395吨,爆破量209.5万米~3合656.5万吨。在大面积塌空区的特定条件下,实际爆破效果(1977年6月30日起爆)达到了设计预期目的。一、爆区地形、地质及溜井塌落状况兰山2号溜井直径5米,深400米,位于兰
I mine Lanshan 2 slip well to deal with the big blasting area is in an area of 16,500 m ~ 2 above the collapse of the area. The actual blasting tunnel 1937 meters, 72 drug rooms, the amount of 1395 tons of explosive, blasting volume of 2.0955 million cubic meters to 6.565 million tons. Under the specific conditions of a large area of collapse, the actual blasting effect (detonated on June 30, 1977) met the intended purpose of the design. First, the burst area topography, geology and slippery well slopping situation Lanshan No. 2 slipway 5 meters in diameter, 400 meters deep, located in the orchid