考虑岩体完整程度的岩石爆破损伤模型及应用

陈俊桦; 张家生; 李新平

doi:10.11779/CJGE201605011

考虑岩体完整程度的岩石爆破损伤模型及应用 English Version

陈俊桦^{1, 2},
张家生^{1, 2},
李新平³

1. 中南大学土木工程学院,湖南长沙 410075;
2. 高速铁路建造技术国家工程实验室,湖南长沙 410075;
3. 武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉 430070

基金项目: 国家自然科学基金项目（51274157,51378514）

详细信息

作者简介:
陈俊桦(1983- ),男,博士研究生,主要从事岩土工程、爆破工程方面的研究工作。E-mail: jhchan@126.com。

中图分类号: TU45
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出版历程
- 收稿日期: 2015-05-02
- 发布日期: 2016-05-24

Model of rock blasting-induced damage considering integrity of rock mass and its application

1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. National Engineering Laboratory for High Speed Railway Construction, Changsha 410075, China;
3. Hubei Key Laboratory of Road-Bridge and Structure Engineering, Wuhan University of Technology, Wuhan 430070, China

摘要

摘要: 现有爆破损伤本构模型未能考虑岩体完整程度对爆破作用效果的影响。为此,对Yang等提出的爆破损伤模型进行了改进,建立考虑初始损伤的弹塑性爆破损伤本构模型及提出用于评价围岩受爆破影响的损伤判据。该本构模型包含初始损伤变量和岩体完整性指数、声波波速等参数间的关系式,并利用岩体初始完整性指数的变化考虑其完整程度对爆破损伤作用的影响。把该模型引入到LS-DYNA数值软件中,并结合工程实例进行数值模拟,得到爆破损伤云图及相应的爆破影响范围。然后将计算得到的爆破影响范围与现场实测值、基于常用的TCK爆破损伤模型的数值计算结果进行了对比。最后,分析了爆破影响最大半径、最大深度与岩体初始完整性指数间的关系。研究表明,爆破影响最大半径、最大深度均随岩体初始完整性指数的减小而增大,且前者的变化更为显著。基于所提出模型的数值计算结果和现场实测值较为符合;提出的损伤模型可为考虑岩体完整程度对爆破开挖影响的理论研究和工程实践提供参考。
- 岩石 /
- 爆破损伤 /
- 岩体完整性指数 /
- 数值模拟 /
- 声波波速
Abstract: The influences of the integrity of rock mass on blasting effects are not taken into account by the current models for rock blasting-induced damage. Based on the blasting-induced damage model proposed by R. Yang et al., an elastic-plastic constitutive model for blasting-induced damage and the corresponding criterion for determining the blasting influence zone of the surrounding rock, both of which consider the initial damage of rock, are suggested by connecting the initial damage with the initial values of integrity index and acoustic wave velocity of rock mass. This model can be used to consider the influence of the initial integrity of rock mass on the blasting damage effects by changing its initial integrity index. The constitutive model is introduced into software LS-DYNA for blasting simulation in line with practical engineering. The blasting-induced damage nephogram and the blasting influence zone are obtained. The blasting influence zones obtained respectively by the suggested model, the field tests and the conventional model-TCK are compared. In the end, for the maximum influence radius of blasting and the maximum influence depth of blasting, the relations between them with the initial integrity index of rock mass are analyzed. The results show that, for the maximum influence radius and the maximum influence depth, their values decrease with the decrement of the initial integrity index of rock mass while the change of the former is more remarkable than that of the latter. The proposed model considering the initial integrity of rock mass is rational. The results obtained by the suggested numerical model agree well with those from the field tests. The proposed model can provide references for theoretical research and engineering practice, in both of which the influences of integrity of rock mass on blasting excavation should be considered.
- rock /
- blasting-induced damage /
- integrity index of rock mass /
- numerical simulation /
- acoustic wave velocity

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参考文献(22)

[1]	刘殿书, 于滨, 杜玉兰, 等. 岩石爆破损伤模型及其研究进展[J]. 工程爆破, 1999, 5(4): 78-84. (LIU Dian-shu, YU Bin, DU Yu-lan, et al. Damage models of rock fragmentation by blasting and their progress[J]. Engineering Blasting, 1999, 5(4): 78-84. (in Chinese))
[2]	TAYLOR L M, KUSZMAUL J S, GHEN E P. Damage accumulation due to macrocracking in brittle rock under dynamic loading[J]. American Society of Mechanical Engineers, Applied Mechanics Division, 1985, 69: 95-104.
[3]	TAYLOR L M, CHEN E P, KUSZMAUL J S. Microcrack- induced damage accumulationin brittle rock under dynamic loading[J]. Computer Methods in Applied Mechanics and Engineering, 1986, 55(3): 301-320.
[4]	杨军, 金乾坤. 应力波衰减基础上的岩石爆破损伤模型[J]. 爆炸与冲击, 2000, 20(3): 241-246. (YANG Jun, JIN Qian-kun. A new damage model for rock fragmentation by blasting based on stress wave attenuation[J]. Explosion and Shock Waves, 2000, 20(3): 241-246. (in Chinese))
[5]	胡英国, 卢文波, 陈明, 等. 岩石爆破损伤模型的比选与改进[J]. 岩土力学, 2012, 33(11): 3278-3284. (HU Ying-guo, LU Wen-bo, CHEN Ming, et al. Comparison and improvement of blasting damage models for rock[J]. Rock and Soil Mechanics, 2012, 33(11): 3278-3284. (in Chinese))
[6]	YANG R, BRWDEN W F, KATSABANIS P D. A new constitutive model for blast damage[J]. International Journal of Rock Mechanics and Mining Sciences, 1996, 33(3): 245-254.
[7]	冯春, 李世海, 周东, 等. 爆炸载荷作用下岩石损伤破裂过程的数值分析[J]. 岩土工程学报, 2014, 36(7): 1262-1270. (FENG Chun, LI Shi-hai, ZHOU Dong, et al. Numerical analysis of damage and crack process of rock under explosive loading[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(7): 1262-1270. (in Chinese))
[8]	夏祥. 爆炸荷载作用下岩体损伤特征及安全阈值研究 [D]. 武汉: 中国科学院武汉岩土力学研究所, 2006. (XIA Xiang. Study on damage characteristics and safety threshold of rock vibration by blast[D]. Wuhan: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2006. (in Chinese))
[9]	李新平, 陈俊桦, 李友华, 等. 溪洛渡电站地下洞室群爆破地震效应的研究[J]. 岩石力学与工程学报, 2010, 29(3): 494-501. (LI Xing-pin, CHEN Jun-hua, LI You-hua, et al. Study of blasitng seismic effects of underground chamber group Xiluodu hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(3): 494-501. (in Chinese))
[10]	WANG Zhi-liang, LIA Yong-chi, SHEN R F. Numerical simulation of tensile damage and blast crater in brittle rock due to underground explosion[J]. International Journal of Rock Mechanics and Mining Sciences, 2007, 44(5): 730-738.
[11]	李新平, 陈俊桦, 李友华, 等. 溪洛渡电站地下厂房爆破损伤范围及判据研究[J]. 岩石力学与工程学报, 2010, 29(10): 2042-2048. (LI Xing-pin, CHEN Jun-hua, LI You-hua, et al. study of criterion and damage zone induced by excavation blasting of underground power-house of Xiluodu hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(10): 2042-2048. (in Chinese))
[12]	朱传云, 喻胜春. 爆破引起岩体损伤的判别方法研究[J]. 工程爆破, 2001, 7(1): 12-16. (ZHU Chuang-yun, YU Sheng-chun. Study on the criterion of rockmass damage caused by blasting[J]. Engineering Blasting, 2001, 7(1): 12-16. (in Chinese))
[13]	AHRENS T J, RUBIN A M. Impact-induced tensional failure in rock[J]. Journal of Geophysical Research, 1993, 98(EI): 1185-1203.
[14]	戚承志, 钱七虎. 岩石等脆性材料动力强度依赖应变率的物理机制[J]. 岩石力学与工程学报, 2003(2): 177-181. (QI Cheng-zhi, QIAN Qi-hu. Physcial mechanism of brittle materials strength-strain rate sensitivity[J]. Chinese Journal of Rock Mechanics and Engineering, 2003(2): 177-181. (in Chinese))
[15]	GRADY D E. Shock wave properties of brittle solids[J]. Mechanics of Materials, 1998(29): 181-203.
[16]	FURLONG J R, DAVIS J F, ALME M L. Modeling the dynamic load/unload behavior of ceramics under impact loading[R]. Arlington: R& D Associates, 1990.
[17]	唐春安, 徐小荷. 岩石全应力-应变过程的统计损伤理论分析[J]. 东北工学院院报, 1987, 51(2): 191-195. (TANG Chun-an, XU Xiao-he. Statistical damage analysis of the rock complete stress-strain proeess[J]. Journal of Northeast University of Technology, 1987, 51(2): 191-195. (in Chinese))
[18]	严鹏, 卢文波, 单治钢, 等. 深埋隧洞爆破开挖损伤区检测及特性研究[J]. 岩石力学与工程学报, 2009, 28(8): 1552-1561. (YAN Peng, LU Wen-bo, SHAN Zhi-gang, et al. Detecting and study of blasting excavtion-induced damage of deep tunnel and its characters[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(8): 1552-1561. (in Chinese))
[19]	杨卫风, 白伟亮, 翟传明. 爆破震动对小净距隧道岩体损伤的声波测试[J]. 质量检测, 2014, 32(9): 27-30. (YANG Wei-feng, BAI Wei-liang, ZHAI Chuan-ming. The sound Wave test of blasting vibration for tunnel rock mass damage[J]. Quality Test, 2014, 32(9): 27-30. (in Chinese))
[20]	闫长斌, 徐国元, 杨飞. 爆破动荷载作用下围岩累积损伤效应声波测试研究[J]. 岩土工程学报, 2007, 29(1): 88-93. (YAN Chang-bin, XU Guo-yuan, YANG Fei. Measurement of sound waves to study cumulative damage effect on surrounding rock under blasting load[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(1): 88-93. (in Chinese))
[21]	LIU Li-qing, KATSABANIS P D. Development of a continuum damage model for blasting analysis[J]. International Journal of Rock Mechanics and Mining Sciences, 1997, 34(2): 217-231.
[22]	王娜峰. 乳化炸药能量提高及能量输出结构的若干因素研究[D]. 北京: 北京理工大学, 2014. (WANG Na-feng. Studies on energy improvement and energy output structure of emulsion explosives[D]. Beijing: Beijing Institute of Technology, 2014. (in Chinese))

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