[1]张尧棋,张湘平,张馨,等.软岩隧道全断面光面爆破优化及高效施工技术[J].高速铁路技术,2025,(01):116-122.[doi:10.12098/j.issn.1674-8247.2025.01.019]
　ZHANG Yaoqi ZHANG Xiangping ZHANG Xin LIU Siyang LI Bo.Optimization of Full-section Smooth Blasting and Efficient Construction Technology for Soft Rock Tunnels[J].HIGH SPEED RAILWAY TECHNOLOGY,2025,(01):116-122.[doi:10.12098/j.issn.1674-8247.2025.01.019]
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软岩隧道全断面光面爆破优化及高效施工技术()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2025年01期
页码:
116-122
栏目:
施工
出版日期:
2025-02-20

文章信息/Info

Title:
Optimization of Full-section Smooth Blasting and Efficient Construction Technology for Soft Rock Tunnels
文章编号:
1674-8247(2025)01-0116-07
作者:
张尧棋1; 张湘平2; 3; 张馨1; 3; 刘思阳1; 李波3
(1.河南理工大学, 河南 焦作 454003; 2.天津大学, 天津 300072; 3.中铁十八局集团有限公司, 天津 300222)
Author(s):
ZHANG Yaoqi1 ZHANG Xiangping2; 3 ZHANG Xin1; 3 LIU Siyang1 LI Bo3
(1.Henan Polytechnic University, Jiaozuo 454003, China; 2.Tianjin University, Tianjin 300072, China; 3.China Railway 18th Bureau Group Co., Ltd., Tianjin 300222, China)
关键词:
软岩隧道;  复式周边孔;  光面爆破;  机械化作业
Keywords:
soft rock tunnel;  composite peripheral hole;  smooth blasting;  mechanized operation
分类号:
U455
DOI:
10.12098/j.issn.1674-8247.2025.01.019
文献标志码:
A
摘要:
为在软岩隧道光面爆破施工中消除欠挖,提升整体爆破质量、施工便捷性和经济性,本文以郑万高速铁路苏家岩软岩隧道为背景,研究了软岩隧道高效爆破机械化施工技术。结果表明:(1)提出了一种软岩光面爆破复式周边孔技术,周边深孔用于形成轮廓,周边浅孔用于消除欠挖,解决了因初期支护厚度无法沿轮廓线钻取周边孔而出现的欠挖问题;(2)通过数值模拟证明复式周边孔技术可以消除爆破盲区,确保良好轮廓线的形成;(3)针对软岩隧道爆破作业,提出了爆破施工原则和配套机械化设备;(4)统计了苏家岩软岩隧道工程3个月的新技术及配套机械作业应用效果,复式周边孔技术保证了光面、光底的开挖效果,单次爆破进尺提高到5 m,炮眼利用率达到96%～100%,节约了炸药消耗和工程成本,月施工用时和进尺显著提高,取得良好的应用效果。
Abstract:
To eliminate undercutting, enhance overall blasting quality, construction convenience, and economy in smooth blasting construction for soft rock tunnels, this paper investigated efficient mechanized blasting construction technology for soft rock tunnels, with the Sujiayan soft rock tunnel of the Zhengzhou-Wanzhou High-speed Railway as the background. The results indicate:(1)A composite peripheral hole technology for smooth blasting in soft rock was proposed, where deep peripheral holes are used to form the contour, and shallow peripheral holes are used to eliminate undercutting. This solves the undercutting arising from the inability to drill peripheral holes along the contour line due to the thickness of initial support.(2)Numerical simulations demonstrate that the composite peripheral hole technology can eliminate blasting blind zones and ensure the formation of a good contour line.(3)Blasting construction principles and supporting mechanized equipment were proposed for blasting operations in soft rock tunnels.(4)The application effects of new technologies and supporting mechanical operations over a three-month period in the Sujiayan soft rock tunnel project were statistically analyzed. The composite peripheral hole technology ensures smooth excavation of walls and bottoms, and increases the single-blast advance to 5 m, thus achieving a blasthole utilization rate of 96% to 100%. It also reduces explosive consumption and engineering costs, and significantly improves monthly construction duration and advance, thus achieving good application results.

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备注/Memo

备注/Memo:
收稿日期:2024-01-31
作者简介:张尧棋(1998-),男,硕士研究生。
基金项目:河南省博士后科研项目(202101036)
更新日期/Last Update: 2025-02-20