| 空气间隔装药技术周边孔间距对爆破效果的研究 |
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| 引用本文： | 程康,苏微倩,张桂涛,武金贵. 空气间隔装药技术周边孔间距对爆破效果的研究[J]. 爆破, 2011, 28(4): 15-19. DOI: 10.3963/j.issn.1001-487X.2011.04.004 |
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| 作者姓名： | 程康 苏微倩 张桂涛 武金贵 |
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| 作者单位： | 武汉理工大学土木工程与建筑学院,武汉,430070;中天路桥有限公司,武汉,430030 |
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| 基金项目： | 交通部科技项目(2009353342550);中央高校基本科研业务费专项资金资助(2010-ZY-TJ-011) |
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| 摘 要： | 隧道掘进中,控制围岩的超欠挖,即控制光面爆破效果是决定隧道掘进成败的主要考量指标.隧道掘进控制光面爆破效果的参数有周边孔间距、装药量、装药结构等,其中周边孔间距是保证光面爆破质量的最重要参数.通过理论分析LS-DYNA数值模拟平台,建立空气间隔装药双孔爆破模型,计算了周边孔间距在30 cm、40 cm、50 cm和60...
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| 关 键 词： | 周边孔间距 空气间隔装药 光面爆破 |
Analysis on Influence of Contour Boreholes Space with Air-decked Charge on Smooth Blasting Effect |
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| CHENG Kang,SU Wei-qian,ZHANG Gui-tao,WU Jin-gui. Analysis on Influence of Contour Boreholes Space with Air-decked Charge on Smooth Blasting Effect[J]. Blasting, 2011, 28(4): 15-19. DOI: 10.3963/j.issn.1001-487X.2011.04.004 |
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| Authors: | CHENG Kang SU Wei-qian ZHANG Gui-tao WU Jin-gui |
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| Affiliation: | CHENG Kang1,SU Wei-qian1,ZHANG Gui-tao2,WU Jin-gui1 (1.School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China; 2.Zhongtian Road and Bridge Co Ltd,Wuhan 430030,China) |
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| Abstract: | During tunnel blasting excavation,the quality of smooth blasting is an important mark which determines the success of the tunnel advancement,which also affects the over and under broken.There are three blast parameters of contour hole spacing,charge weight and structure to control tunneling effect of smooth blasting.Among them,the hole spacing is the most important one ensure the smooth blasting quality.Based on theoretical analysis and the numerical simulation platform of LS—DYNA,two blasting hole model for air-decked charge was established,and calculated the stress and the damage of hole wall in different space of contour boreholes among 30 cm,40 cm,50 cm,60 cm,the results verified by field test show that,in the surrounding rock of sort III,the blasting effect would be best with the space between 40 cm to 50 cm. |
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| Keywords: | space of contour boreholes air-decked charge smooth blasting |
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