一次性成巷爆破掘进技术研究

Study on the Technology of One-time Tunnel Blasting

爆破作为快速、经济的掘进手段,被大量的应用于矿山生产过程中,为实现一次性成巷爆破掘进,根据凝聚体炸药爆轰理论及热力学方法,得到爆轰初始载荷,并经过进一步分析得到爆轰所产生裂缝长度计算方法,并通过对爆破影响因素分析,得到空孔布置可改变空孔围岩应力分布。在掘进爆破有限元模型的基础上进行仿真分析,得到爆破时巷道围岩应力分布及巷道成型过程,进一步说明空孔的设置可有效控制巷道成型,为一次性成巷爆破掘进技术提供一定的理论依据和成型方法。

Supply chain innovation and application is an important measure to promote supply side structural reform and industrial organization innovation.As a national pillar industry,iron and steel enterprises should actively respond to the call of the state,start with improving the coordination level of supply chain,promoting the integration of circulation and production,and promoting green supply chain,to carry out supply chain innovation,realize new changes in the development of supply chain of iron and steel enterprises,and enhance comprehensive competitiveness.