楔形掏槽爆破下自由面应力分布数值模拟  

Numerical simulation for the stress distribution on free surface under the wedge cut blasting

作　　者：王振昌[1,2] 王聪聪[1,2] 伍恩 WANG Zhenchang WANG Congcong WU En(Zijin Mining College, Fuzhou University, Fuzhou 350116 Institute for Explosive Technology, Fuzhou University. Fuzhou 350116,)

机构地区：[1]福州大学紫金矿业学院,福建福州350116 [2]福州大学爆炸技术研究所,福建福州350116

出　　处：《矿业工程》2017年第3期55-58,共4页Mining Engineering

基　　金：国家自然科学基金项目(41072232);福建省自然科学基金项目(2001J01310);水平层状Ⅲ级围岩隧道控制爆破技术研究(01051601)

摘　　要：基于Satrifeld迭加法,理论推导了楔形掏槽炮孔中柱状药包爆破作用下自由面上应力分布的解析解。建立了相应的数值模型,通过数值模拟对该解析解进行验证,结果表明,在自由面上,沿同一楔掏槽孔连线方向,爆炸应力随与掏槽孔口间距的增大呈递减趋势,该规律与理论分析所得结论基本吻合。Based on the satrifeld superposition method,this paper derived the analytic solutions for the stress distribution on free surface under the action of wedge cut column charge blasting.The corresponding numerical model is established,the analytical solution is verified by numerical simulation.The results show,along the direction of the same wedge cut hole connection on the free surface,the blasting stress decreases with the increase of the distance from the orifice,This law is basically consistent with the theoretical analysis.

关 键 词：柱状药包 Satrifeld迭加法 自由面 应力分布 数值模拟 

分 类 号：TD235.4[矿业工程—矿井建设]