切缝药包参数对切缝效果的影响研究  

Study on Influence of Slit Charge Parameters on Slit Effect

作　　者：段宝福 柴明星[1,2] 魏玉冠 荆哲 杨云倩 DUAN Baofu;CHAI Mingxing;WEI Yuguan;JING Zhe;YANG Yunqian(College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China;Shandong Province Key Laboratory of Civil Engineering and Disaster Preventionand Mitigation(Shandong University of Science and Technology),Qingdao 266590,China)

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]山东省土木工程防灾减灾重点实验室(山东科技大学),山东青岛266590

出　　处：《煤炭技术》2024年第5期29-33,共5页Coal Technology

基　　金：山东省自然科学基金(ZR2020ME096);爆破工程湖北省重点实验室开放基金(BL2021-24)。

摘　　要：结合数值分析,对比了切缝药包与普通药包作用下孔壁应力特征及爆生裂纹扩展规律。从应力、裂纹扩展角度分析装药不耦合系数、切缝宽度、切缝管厚度对岩石切缝效果的影响,给出合理的切缝药包参数。研究成果可应用于煤矿岩巷、隧道和边坡等爆破工程。Combined with numerical analysis,the stress characteristics of the hole wall and the law of explosive crack growth under the action of slit charge and ordinary charge are compared.The effects of uncoupling coefficient of charge,slit width and slit pipe thickness on rock slit effect are analyzed from the angle of stress and crack propagation,and reasonable slit charge parameters are given.The research results can be applied to the blasting engineering of coal mine rock roadway,tunnel and slope.

关 键 词：切缝药包 数值模拟 裂纹扩展 合理参数 

分 类 号：TD235[矿业工程—矿井建设]