混凝土初始损伤对爆炸压碎区尺寸影响分析ANALYSIS ON CRUSHING ZONE SIZE OF BLASTING IN CONCRETE WITH INITIAL DAMAGE
梁斌;陈忠富;陈小伟;卢永刚;
LIANG Bin,CHEN Zhong-fu,CHEN Xiaowei,LU Yong-gang(Institute of Systems of Engineering,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China)
摘要(Abstract):
在已有经验公式的分析基础上,考虑钻孔或侵彻对炮孔产生损伤的影响,引入一个无量纲的参数,提出预估混凝土介质中爆炸压碎区半径的经验公式,通过文献实验对经验公式参数进行拟合,并由文献提供的全尺寸实验对提出的公式进行验证。分析比较表明,本文提出的公式预估与实验符合较好。
A new experiential formula for prediction of the radius of crushing zone resulted from blasting in concrete medium was brought forward.The formula was based on the analysis of the existing formulas and data from experiment with the consideration of resulting damage to borehole given by drilling hole by introducing a dimensionless parameter called the crushing zone index(C′I).A good correlation between the new formula and measured results was obtained.The new formula has been verified with the tests reported in this paper.The analytical results from this validation showed that the proposed formula well agreed with the tests.
关键词(KeyWords):
混凝土;爆炸压碎区;经验公式;实验验证
Concrete;Crushing zone of blasting;Experiential formula;Test verifying
基金项目(Foundation): 武器装备探索项目(6130516)的资助
作者(Authors):
梁斌;陈忠富;陈小伟;卢永刚;
LIANG Bin,CHEN Zhong-fu,CHEN Xiaowei,LU Yong-gang(Institute of Systems of Engineering,China Academy of Engineering Physics,Mianyang 621900,Sichuan,China)
参考文献(References):
- [1]Whittaker B N,Singh R N,Sun G.Rock fracture mechanicsprinciples,design and applications[M].Amsterdam:Elsevi-er,1992.44-45.
- [2]II’yushin A.The mechanics of a continuous medium.Izd-voMGU.vol.Ⅱ.Rotterdam:Balkema,1999.964-1009.
- [3]Szuladzinski G.Response of rock medium to explosive bore-hole pressure[C].Proceedings of the Fourth InternationalSymposium on Rock Fragmentation by Blasting-Fragblast-4,Vienna,Austria.1993.17-23.
- [4]Djordjevic N.Two-component of blast fragmentation[C].Proceedings of the Sixth International Symposium on RockFragmentation by Blasting-Fragblast,Johannesburg,SouthAfrica.1999.21-39.
- [5]Kanchibotla S.Modelling fines in blast fragmentation and itsimpact on crushing and grinding[C].A Conference on RockBreaking.Kalgoorlie,Australia,1999.37-44.
- [6]Bilgin H A.Patarge Project,Internal Report[R].Barutsan AS,Elmadag,Ankara,Turkey,1999.
- [7]亨利奇J.爆炸动力学及其应用[M].熊建国,江近仁,陆顺永,曹志远译.北京:科学出版社,1987.
- [8]Holqmuist T J,Johnson G K,Cook W H.A computationalconstitutive model for concrete subjected to large strains,high strain rate and high pressures[C].14th InternationalSymposium on Ballistics,1993.9.
- [9]Mohanty B,Prasad U.Degree of rock fragmentation underhigh strain rates[C].Proceedings of the 27th Annual Con-ference on Explosives and Blasting Technique,Vol.2.Orlan-do,FL,USA:ISEE,2001,89-95.
- [10]张宝坪,张庆民,黄风雷.爆轰物理学[M].北京:北京理工大学出版社,2005.
- [11]Esena S,Onederraa I,Bilginb H A.Modelling the size ofthe crushed zone around a blasthole[J].International Jour-nal of Rock Mechanics&Mining Science,2003,40,485-495.
- [12]Olsson M,Bergqvist I.Crack lengths from explosives inmultiple hole blasting[C].Proceedings of the Fifth Inter-national Symposium on Rock Fragmentation by Blasting,Fragblast,Montreal,Quebec,Canada,1996.87-91.Tech-nology,USA,1990.
- 梁斌
- 陈忠富
- 陈小伟
- 卢永刚
LIANG Bin- CHEN Zhong-fu
- CHEN Xiaowei
- LU Yong-gang(Institute of Systems of Engineering
- China Academy of Engineering Physics
- Mianyang 621900
- Sichuan
- China)
- 梁斌
- 陈忠富
- 陈小伟
- 卢永刚
LIANG Bin- CHEN Zhong-fu
- CHEN Xiaowei
- LU Yong-gang(Institute of Systems of Engineering
- China Academy of Engineering Physics
- Mianyang 621900
- Sichuan
- China)