基于SPH-FEM耦合模拟的隧道深埋排水沟爆破技术优化研究

doi:10.19952/j.cnki.2096-5052.2025.03.08

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摘要为提高通排水效率并保障隧道运行安全,依托青海赛尔龙2号隧道施工,建立了SPH-FEM(smoothed particle hydrodynamics-finite element method)耦合计算模型,对比了不同布孔方式(垂直布孔与楔形布孔)下的岩石损伤演化、爆破槽腔尺寸及岩石抛掷效果。研究结果表明:垂直布孔与楔形布孔条件下,岩体整体损伤范围基本一致,但楔形布孔时沟槽底板易产生超欠挖,不利于爆破成型控制。不同布孔方式下爆破轮廓形状相近,相比于垂直布孔,采用楔形布孔更有利于提升槽腔体积与槽腔口面积。从轮廓成型效果及粒子抛掷效率的角度,对楔形钻孔炮孔布置方案进行了优化,可在保证轮廓成型效果及粒子抛掷数量的同时,降低粒子的抛掷速度,为深埋排水沟高效成型提供参考。

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	张海兰
	吴云鹏
	邹仁
	马晓龙
	李坤泰
	高启栋
	牛磊
	周海孝

关键词: 隧道工程排水沟爆破爆破槽腔爆破损伤抛掷效果 SPH-FEM耦合算法

Abstract: To improve drainage efficiency and ensure tunnel operational safety, an SPH-FEM(smoothed particle hydrodynamics-finite element method)coupled computational model was established based on the construction of the Qinghai Saierlong No. 2 Tunnel. A comparison was made of rock damage evolution, blast-induced cavity dimensions, and rock ejection effects under different borehole arrangements(vertical drilling and wedge-shaped drilling). The research results showed that the overall extent of rock damage was generally consistent under both drilling patterns. However, wedge-shaped drilling was more prone to overbreak or underbreak at the trench bottom, which was unfavorable for blast-induced contour control. Although the blast contours were similar under both configurations, wedge-shaped drilling resulted in a larger cavity volume and a wider cavity opening compared to vertical drilling. The wedge-shaped drilling layout was optimized considering contour quality and particle ejection efficiency. This optimization reduced the particle ejection velocity while maintaining satisfactory contour formation and particle ejection quantity, thereby providing a reference for the efficient construction of deep-buried drainage ditches.

Key words: tunneling drainage trench blasting blasting slot cavity blast damage throwing effect SPH-FEM coupling algorithm

发布日期: 2025-09-19

中图分类号:

U43

基金资助: 国家自然科学基金资助项目(52379096);陕西省创新能力支撑计划资助项目(2023-CX-TD-35);陕西省交通运输厅交通科技资助项目(23-79K);长安大学青年学者学科交叉团队建设资助项目(300104240925)

作者简介: 张海兰(1972— ),男,湖南郴州人,工程师,主要研究方向为隧道施工. E-mail:1254440731@qq.com. *通信作者简介:高启栋(1991— ),男,陕西延安人,教授,博士生导师,博士,主要研究方向为隧道与工程爆破与岩石动力学. E-mail:qdgao@chd.edu.cn

引用本文:

张海兰, 吴云鹏, 邹仁, 马晓龙, 李坤泰, 高启栋, 牛磊, 周海孝. 基于SPH-FEM耦合模拟的隧道深埋排水沟爆破技术优化研究[J]. 隧道与地下工程灾害防治, 2025, 7(3): 93-104.
ZHANG Hailan, WU Yunpeng, ZOU Ren, MA Xiaolong, LI Kuntai, GAO Qidong, NIU Lei, ZHOU Haixiao. Optimization study of blasting technology for deeply buried drainage trench in tunnel based on SPH-FEM coupled simulation. Hazard Control in Tunnelling and Underground Engineering, 2025, 7(3): 93-104.

链接本文:

http://tunnel.sdujournals.com/CN/Y2025/V7/I3/93

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