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露天深孔爆破的对象是坚硬的矿(岩)体,其性质、产状、倾角、裂隙节理、层理面、断层破碎带、软岩央层、氧化破碎带以及矿(岩)体的硬度等变化复杂,有的还有地下溶洞或采空区的存在。如果上述情况掌握不清楚,某些影响因素考虑不周到,选取爆破参数不合理时,爆破后就要产生根底。有的对炸药爆炸过程中破碎岩石的能力估计不足,或者其他技术因素的影响,爆破后也会产生根底。有的由于现场施工条件
The object of deep-hole blasting in open air is a hard mineral body whose properties, occurrences, dip, fracture joints, bedding plane, fault zone, soft core, oxidized zone and hardness of ore body Change is complicated, and some underground karst or goaf existence. If the situation is not clear grasp of some of the factors considered inattentive, select the blasting parameters are unreasonable, after blasting to produce the foundation. Some underestimated the ability of crushing rock during explosive explosions, or other technical factors, and the foundation will also be produced after the blasting. Some due to on-site construction conditions