爆破器材2026，Vol.55Issue(2)：49-55,7.DOI:10.3969/j.issn.1001-8352.2026.02.008
节理化砂岩地层隧道聚能爆破试验研究
Experimental Study on Shaped Charge Blasting in Jointed Sandstone Strata Tunnel
摘要
Abstract
Based on the Pingshan East Tunnel project in Shenshan Railway,a blasting test was carried out using shaped charge tubes and shaped charge liners,aiming to optimize the blasting outcomes of tunnel excavation and control o-ver excavation and under excavation phenomena.Based on the geological conditions and surrounding rock characteristics of the tunnel,the principle and key process of shaped charge blasting are explained.Through on-site blasting tests,the influ-ences of different peripheral-hole spacings and single-hole charges on blasting outcomes were analyzed,and the economic cost was compared and evaluated.The results show that,in jointed sandstone formations,shaped charge blasting signifi-cantly improves the quality of the face and significantly reduces over excavation and under excavation phenomena by adjus-ting blasting parameters.The volume of over excavation and under excavation has respectively decreased from 35.35 m3 and 0.33 m3 to 4.74 m3 and 0.13 m3,which is significantly reduced compared to traditional blasting methods.Compared with traditional blasting,it can save 15-20 detonators and 8-9 kg of explosives in each cycle of shaped charge blasting,reduce material costs by 401-534 yuan,significantly reduce the number of blasting holes and construction time,and demonstrate high economic and construction efficiency.关键词
聚能爆破/爆破优化/超、欠挖控制/三维实景与全景图Key words
shaped charge blasting/blasting optimization/control of over excavation and under excavation/3D real scene and panoramic view分类
矿业与冶金引用本文复制引用
陈健,吕玉江,崔海涛,康湘辉,黄俊杰,张庆彬..节理化砂岩地层隧道聚能爆破试验研究[J].爆破器材,2026,55(2):49-55,7.基金项目
中铁五局集团有限公司科技项目(ZTWJSSSGZB-2023-GCB-016) （ZTWJSSSGZB-2023-GCB-016）
中国中铁科技研究开发计划重大专项(2025-专项-09) （2025-专项-09）
