摘要
光面爆破在隧道掘进中起到举足轻重的作用,参数的选取直接决定了光面爆破的效果。目前参数选择主要是通过经验法确定,具有不确定性。针对隧道掘进光面爆破的特点,运用有限元软件ANSYS/LS-DYNA对隧道掘进爆破中炮孔间距进行模拟优化。研究结果表明,其他参数一定,光爆层厚度为500 mm时,最优的炮孔间距为500 mm。通过数值模拟确定的光面爆破参数能够达到良好的爆破效果,便于指导现场实践。
Smooth blasting plays an important role in tunnel excavation,and the selection of parameters directly determines the effect of smooth blasting.At present,parameter selection is mainly determined by empirical method with uncertainty.According to the characteristics of smooth blasting in tunnel excavation,this paper used the finite element software ANSYS/LS-DYNA to simulate and optimize the blast hole spacing in tunnel excavation blasting.The results show that the optimal blast hole spacing is 500 mm when the other parameters are certain and the thickness of the photoexplosion layer is 500 mm.The smooth blasting parameters determined by numerical simulation can achieve good blasting effect,which is convenient to guide field practice.
作者
王东旺
袁绍国
WANG Dongwang;YUAN Shaoguo(School of Mining and Coal,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China)
出处
《能源与节能》
2022年第8期204-206,共3页
Energy and Energy Conservation
