[1]秦桂芳①,曾灿①,徐间锋①,等.基于HJC损伤本构模型的灰岩隧道光面爆破数值模拟及工程验证[J].爆破器材,2022,51(06):45-51.[doi:10.3969/j.issn.1001-8352.2022.06.008]
　QIN Guifang,ZENG Can,XU Jianfeng,et al.Numerical Simulation and Engineering Verification of Smooth Blasting in Limestone Tunnel Based on HJC Damage Constitutive Model[J].EXPLOSIVE MATERIALS,2022,51(06):45-51.[doi:10.3969/j.issn.1001-8352.2022.06.008]
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基于HJC损伤本构模型的灰岩隧道光面爆破数值模拟及工程验证()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
51
期数:
2022年06
页码:
45-51
栏目:
爆破技术
出版日期:
2022-11-25

文章信息/Info

Title:
Numerical Simulation and Engineering Verification of Smooth Blasting in Limestone Tunnel Based on HJC Damage Constitutive Model
文章编号:
5720
作者:
秦桂芳①; 曾灿①; 徐间锋①; 贺睿②
①贵州路桥集团有限公司(贵州贵阳，550000)
②中南大学土木工程学院(湖南长沙，410075)
Author(s):
QIN Guifang①;  ZENG Can①;  XU Jianfeng①;  HE Rui②
①Guizhou Road & Bridge Group Co., Ltd. (Guizhou Guiyang, 550000)
②School of Civil Engineering, Central South University (Hu‘nan Changsha, 410075)
关键词:
光面爆破; 不耦合系数; 灰岩; 炮孔间距; HJC损伤本构模型
Keywords:
smooth blasting;  decoupling coefficient;  limestone;  blast hole space;  HJC damage constitutive model
分类号:
TD235.37
DOI:
10.3969/j.issn.1001-8352.2022.06.008
文献标志码:
A
摘要:
为解决六枝至安龙高速公路隧道爆破施工中光面爆破效果不良的问题，利用ANSYS/LS-DYNA有限元软件开展了径向不耦合装药系数及周边眼间距的多工况计算；进而基于不同爆破参数条件下的围岩损伤特征分析，优化得到了合适的爆破参数：径向不耦合系数1.25，炮孔间距为55 cm。进一步开展了隧道周边眼整体模型的数值计算，获取了优化参数条件下的隧道爆破成型预测效果。将优化的爆破参数应用于现场爆破后发现，隧道轮廓线平整，形成的隧道开挖轮廓线与设计轮廓线基本吻合，应用效果良好。
Abstract:
In order to solve the problem of poor smooth blasting outcome during blasting construction of LiuzhiAnlong Expressway Tunnel, calculation of radial decoupling charge coefficient and peripheral hole spacing under multiple working conditions was carried out by using ANSYS/LS-DYNA software. Then, based on the analysis of damage characteristics of surrounding rock under different blasting parameters, the appropriate blasting parameters were optimized. The radial decoupling coefficient is 1.25, and the blast hole space is 55 cm. Numerical calculation of the model of the tunnel peri-pheral hole was further carried out, and prediction outcome of the tunnel shape after blasting under the optimized parameters was obtained. After application of the optimized blasting parameters to the site, it was found that the tunnel contour was flat, the tunnel excavation contour formed by blasting was basically consistent with the design contour, and the application outcome was good.

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备注/Memo

备注/Memo:
收稿日期：2022-04-25
基金项目：贵州省交通运输厅科技项目(2021-122-047)；贵州路桥集团有限公司科技计划项目(LATJ-12-KY01)
第一作者：秦桂芳(1980－)，女，高工，主要从事土木工程施工与管理工作。E-mail: 648395965@qq.com
通信作者：贺睿(1997－)，男，硕士研究生，主要从事隧道与地下工程建造技术研究。E-mail:869023223@qq.com
更新日期/Last Update: 2022-11-23