为强化露天开采,针对水厂铁矿爆破工作中存在的孔网参数较小,超深和填塞长度较大,从而造成延米爆破量低,大块率较高等主要问题,长沙矿冶研究所与首钢矿山公司共同确定了以“扩大孔网参数,提高炮孔邻近 In order to strengthen the open-pit mining, aiming at the small pore network parameters, ultra-deep and large packing length in the blasting of the iron works of the waterworks, which resulted in the main problems such as low blasting volume and high bulk ratio, Changsha Institute of Mining and Metallurgy And Shougang Mining Company together to determine the "expansion of the pore network parameters to improve the adjacent hole