煤层折曲构造区巷道深孔预裂爆破卸压研究  

Research on pressure relief by deep hole pre splitting blasting in coal seam folded structure area roadway

作　　者：吕卫东 张惟昭 崔玉江 刘涛 范志强 周旭杰 王海亮[2] 王亚朋 Lv Weidong;Zhang Weizhao;Cui Yujiang;Liu Tao;Fan Zhiqiang;Zhou Xujie;Wang Hailiang;Wang Yapeng(Shandong Energy Group Northwest Mining Co.,Ltd.,Xi’an Shaanxi 710016,China;Shandong University of Science and Technology,Qingdao Shandong 266590,China;Qingdao University of Science and Technology,Qingdao Shandong 266061,China)

机构地区：[1]山东能源集团西北矿业有限公司,陕西西安710016 [2]山东科技大学,山东青岛266590 [3]青岛科技大学,山东青岛266061

出　　处：《山西建筑》2024年第21期71-74,共4页Shanxi Architecture

基　　金：国家自然科学基金资助项目(10672091)。

摘　　要：为了解决掘锚一体机进行巷道掘进的过程中造成的巷道片帮问题,以某煤矿的一条掘进运输巷爆破工程为背景,采用理论分析、数值模拟及现场测试等方法对预裂爆破卸压机理、预裂爆破前后应力分布、巷道爆破振动衰减规律等几个方面展开深入的分析。通过分析可知,预裂爆破对于降低巷道快速掘进导致的压力过大和巷道出现的片帮问题,具有较好的作用。研究成果希望能对快速掘进巷道爆破卸压提供有意义的参考。In order to address the problem of roadway slabbing caused by tunneling with a combined drilling and anchoring machine,with a certain coal mine’s blasting project in a transportation tunnel as the background,thorough analysis was conducted using theoretical analysis,numerical simulation,and on-site testing to study the principles of pre-split blasting for stress relief,stress distribution before and after pre-split blasting,and the attenuation law of tunnel blasting vibrations.The analysis revealed that pre-split blasting plays a significant role in reducing the excessive pressure generated by rapid tunnel excavation and addressing the issue of roadway slabbing.The research findings are expected to provide meaningful insights for blasting-induced stress relief in rapid tunnel excavation.

关 键 词：巷道开挖 深孔预裂爆破 巷道卸压 快速掘进 

分 类 号：TU753.7[建筑科学—建筑技术科学]