[1]张铁军①,唐潮①,宋鹏伟②③,等.C型聚能管锥角的优化研究[J].爆破器材,2023,52(05):30-37.[doi:10.3969/j.issn.1001-8352.2023.05.006]
　ZHANG Tiejun,TANG Chao,SONG Pengwei,et al.Optimization of the Cone Angle of the C-Type Shaped Charge Tube[J].EXPLOSIVE MATERIALS,2023,52(05):30-37.[doi:10.3969/j.issn.1001-8352.2023.05.006]
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C型聚能管锥角的优化研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
52
期数:
2023年05
页码:
30-37
栏目:
爆破技术
出版日期:
2023-10-13

文章信息/Info

Title:
Optimization of the Cone Angle of the C-Type Shaped Charge Tube
文章编号:
5766
作者:
张铁军①; 唐潮① ; 宋鹏伟②③; 杨新安②③; 马明杰②③
①浙江杭温铁路有限公司(浙江杭州，311225)
②同济大学道路与交通工程教育部重点实验室(上海，201804）
③同济大学交通运输工程学院(上海，201804）
Author(s):
ZHANG Tiejun①;  TANG Chao①;  SONG Pengwei②③;  YANG Xin’an②③;  MA Mingjie②③
①Zhejiang Hangwen Railway Co., Ltd. (Zhejiang Hangzhou, 311225)
②Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University (Shanghai, 201804)
③College of Transportation Engineering, Tongji University (Shanghai, 201804)
关键词:
隧道掘进; C型聚能管; 锥角; 数值模拟; 聚能射流; 裂缝扩展
Keywords:
tunnel excavation;  C-type shaped charge tube;  cone angle;  numerical simulation;  shaped jet;  crack propagation
分类号:
TJ510.3; TD235.2
DOI:
10.3969/j.issn.1001-8352.2023.05.006
文献标志码:
A
摘要:
在聚能爆破技术中，为了获得C型聚能管的最佳锥角，在保持聚能管其他参数一致的情况下，利用LS-DYNA建立聚能单孔爆破模型；采用控制变量法，对4种不同锥角时聚能射流的侵彻特征和围岩中裂缝的扩展特征进行对比研究。研究结果表明：在聚能管其他参数一致的情况下，随着锥角的增大，压碎区半径先减小、后增大，射流侵彻深度与聚能方向上的径向裂缝长度先增大、后减小；当锥角为50°时，聚能射流侵彻深度最大，压碎区范围最小，聚能方向上的径向裂缝最长，对保留围岩的损伤最小。故在其他条件保持一致的情况下，C型聚能管的最佳锥角为50°。
Abstract:
In order to obtain the optimal cone angle of the C-type shaped charge tube in the technology of shaped charge blasting, maintaining the consistency of other parameters of the shaped charge tube, a single-hole shaped charge blasting model was established using LS-DYNA. The control variable method was used to compare the penetration characteristics of the shaped jet and the crack propagation characteristics in the surrounding rock with four different cone angles. The research results show that, when other parameters of the shaped charge tube are the same, with the increase of the cone angle, the radius of the crushing zone decreases first and then increases, while the jet penetration depth and the radial crack length in the direction of energy accumulation increased first and then decreased. When the cone angle is 50°, the penetration depth of the shaped jet is the largest, the crushing zone is the smallest, the radial cracks in the direction of the shaping are the longest, and the damage to the remaining surrounding rock is minimal. Therefore, under the same other conditions, the optimal cone angle of the C-type shaped charge tube is 50°.

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备注/Memo

备注/Memo:
收稿日期：2022-09-01
基金项目：浙江省交通运输厅科研计划项目（2021050）
第一作者：张铁军（1982-），男，本科，工程师，主要从事爆破工程安全评估和管理方面的研究。E-mail：1194666811@qq.com
通信作者：杨新安（1964－），男，博士，教授，主要从事地下空间工程方面的研究。E-mail：xyang@tongji.edu.cn
更新日期/Last Update: 2023-10-11