经山寺露天铁矿减小爆破振动的实践

Practice of reducing blasting vibration in Jingshansi Open-pit Iron Mine

在经山寺露天铁矿开采过程中,由于存在着露井联采、高边坡、周围建筑物或构筑物距离近等复杂地理环境,因此对爆破振动要求较高,经山寺露天铁矿在爆破作业中通过毫秒延期爆破技术、调整孔网参数和起爆顺序等技术手段来降低爆破振动。经过长期的监测,经山寺露天铁矿爆破作业对周围环境的影响稳定,爆破振动在合理范围内。

In the mining process of Jingshansi Open-pit Iron Mine,because of the complex geographical environment, such as open-pit and underground combined mining,high slope,the close surrounding buildings or structures, it is higher requirements to blasting vibration. Using millisecond delay blasting technology, adjusting network parameters, blasting sequence and other technical means, Jingshansi Open-pit Iron Mine reduces blasting vibration. Through long time monitoring, blasting operations has stable influence on surrounding environment, and blasting vibration is in the reasonable range.