岩石高边坡开挖爆破动力损伤的数值仿真

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (799 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要实现高边坡爆破开挖损伤区的数值仿真对研究保留岩体的损伤控制有重要意义。基于采用经典爆破损伤模型表达拉伸损伤的方法，引入对压缩损伤的考虑，同时，修正岩体宏观弹性参数的确定方法，建立自定义拉压损伤定量计算模型，详细推导其建立的数学过程，并采用LS-DYNA用户自定义接口将其成功导入LS-DYNA。采用该模型对溪洛渡高边坡640 m高程马道下边坡保留岩体的爆破开挖损伤效应进行数值仿真，通过岩体声波测试得到的实测损伤区，验证模型的有效性。选取目前应用较为广泛的爆破损伤模型进行对比计算，计算结果表明：拉压损伤模型的计算值与损伤区实测结果有较好的一致性，且与常用的爆破损伤模型相比，拉压损伤模型的精确性略有提高。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 损伤区, 拉压损伤模型, 声波检测, 对比计算

Abstract：It is important to realize the numerical simulation of the excavation blasting damage zone of high slope for the damage control of remaining rock. Based on the expression method of tensile damage by classical blasting damage models，the expression method of compression damage were introduced；and a modified method to determine the elastic physical parameters was put forward. Then，a new tensile-compression damage model was constructed. The established mathematical process of the model was derived in detail. The new model was programmed and linked to the computer code LS-DYNA through the user subroutine interface to realize calculation and test of the model. The damage effect in remaining rock of blasting excavation for Xiluodu down high slope of berm at elevation 640 m was simulated by the tensile-compression damage model. By the measurement of damage zone with acoustic detection，the effectiveness of the model was tested. At the same time，several common blasting damage models were used to make comparing calculation. The results show that the calculated values of the tensile-compression damage model agree well with the measurement of damage zone，and the proposed model?s accuracy is more precise than common blasting damage models.

Key words： rock mechanics damage zone tensile-compression damage model acoustic detection comparative calculation

收稿日期: 2012-04-19

引用本文:

胡英国1，2，卢文波1，2，金旭浩1，2，陈明1，2，严鹏1，2. 岩石高边坡开挖爆破动力损伤的数值仿真[J]. 岩石力学与工程学报, 2012, 31(11): 2204-2213.
HU Yingguo1，2，LU Wenbo1，2，JIN Xuhao1，2，CHEN Ming1，2，YAN Peng1，2. NUMERICAL SIMULATION FOR EXCAVATION BLASTING DYNAMIC DAMAGE OF ROCK HIGH SLOPE. , 2012, 31(11): 2204-2213.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I11/2204

[1]	邓建辉，王浩，姜清辉，等. 利用滑动变形计监测岩石边坡松动区[J]. 岩石力学与工程学报，2002，21(2)：180-184.(DENG Jianhui，WANG Hao，JIANG Qinghui，et al. Monitor of disturbed zone for rock slope by sliding deformities[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(2)：180-184.(in Chinese))
[3]	伍法权，刘彤，汤献良，等. 坝基岩体开挖卸荷与分带研究——以小湾水电站坝基岩体开挖为例[J]. 岩石力学与工程学报，2009，28(6)：1 091-1 098.(WU Faquan，LIU Tong，TANG Xianliang，et al. Research on unloading and zonation of rock mass dam foundation excavation—a case study of Xiaowan hydropower station[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(6)：1 091- 1 098.(in Chinese)) " target="_blank">
[7]	夏祥，李俊如，李海波，等. 广东岭澳核电站爆破开挖岩体损伤特征研究[J]. 岩石力学与工程学报，2007，26(12)：234-241.(XIA Xiang，LI Junru，LI Haibo，et al. Study on damage characteristics of rock mass under blasting load in Ling?ao nuclear power station，Guangdong Province[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(12)：234-241.(in Chinese)) " target="_blank">
[8]	LI H B，XIA X，LI J C. Rock damage control in bedrock blasting excavation for a nuclear power plant[J]. International Journal of Rock Mechanics and Mining Sciences，2010，48(2)：210-218. " target="_blank">
[10]	TAYLOR L M，CHEN E P，KUSZMAUL J S. Microcrack induced damage accumulation in brittle rock under dynamic loading[J]. Computer Methods in Applied Mechanics and Engineering，1986，55(3)：301-320. " target="_blank">
[12]	KUSZMAUL J S. A new constitutive model for fragmentation of rock under dynamic loading[C]// The 2nd International Symposium on Rock Fragmentation by Blasting. Keystone，Canada：[s.n.]，1987：412-423. " target="_blank">
[13]	THORNE B J，HOMMERT P J，BROWN B. Experimental and computational investigation of the fundamental mechanisms of cratering[C]// The 2nd International Symposium on Rock Fragmentation by Blasting. Brisbane，Australia：[s.n.]，1990：117-122. " target="_blank">
[14]	YANG R，BRWDEN W F，KATSABANIS P D. A new constitutive model for blast damage[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1996，33(3)：245-254. " target="_blank">
[4]	杨小林，王树仁. 岩石爆破损伤模型及评述[J]. 工程爆破，1999，5(3)：71-75.(YANG Xiaolin，WANG Shuren. Rock blast damage models and comments[J]. Engineering Blasting，1999，5(3)：71-75.(in Chinese)) " target="_blank">
[16]	FURLONG J R，DAVIS J F，ALME M L. Modeling the dynamic load/ unload behavior of ceramics under impact loading[R]. RDA-TR-0030-0001，Arlington：R and D Associates，1990. " target="_blank">
[18]	Livermore Software Technology Corporation. LS-DYNA keyword user?s manual[M]. California：Livermore Software Technology Corporation，2003：1 014-1 015. " target="_blank">
[19]	WANG Z L，LI Y C，WANG J G. 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(4)：730-738. " target="_blank">
[2]	周火明，盛谦，李维树，等. 三峡船闸边坡卸荷扰动区范围及岩体力学性质弱化程度研究[J]. 岩石力学与工程学报，2004，23(7)：1 078-1 081.(ZHOU Huoming，SHENG Qian，LI Weishu，et al. Excavation-disturbed zone and weaken degree of mechanical properties for rock mass of ship lock slope[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(7)：1 078-1 081.(in Chinese)) " target="_blank">
[6]	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 Qiankun. A new damage model for rock fragmentation by blasting based on stress wave attenuation[J]. Explosions and Shock Waves，2000，20(3)：241-246.(in Chinese)) " target="_blank">
[11]	BUDIANSKY B，O′CONNELL R J. Elastic moduli of a cracked solid[J]. International Journal of Solids and Structures，1976，12(2)：81-97. " target="_blank">
[17]	Livermore Software Technology Corporation. LS-DYNA theoretical manual[M]. California：Livermore Software Technology Corporation，2003：1 012-1 013. " target="_blank">
[20]	MA G W，AN X M. Numerical simulation of blasting-induced rock fractures[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(6)：966-975.
[21]	中华人民共和国行业标准编写组. SL47－94 水工建筑物岩石基础开挖工程施工技术规范[S]. 北京：水利电力出版社，1995.(The Professional Standards Compilation Group of People?s Republic of China. SL47－94 Technical specification for construction of rock foundation excavation of hydraulic structures[S]. Beijing：Water Resources and Electric Power Press，1995.(in Chinese)) " target="_blank">
[22]	卢文波，杨建华，陈明，等. 深埋隧洞岩体开挖瞬态卸荷机制及等效数值模拟[J]. 岩石力学与工程学报，2011，30(6)：1 090-1 096. (LU Wenbo，YANG Jianhua，CHEN Ming，et al. Mechanism and equivalent numerical simulation of transient release of excavation load for deep tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(6)：1 090-1 096.(in Chinese)) " target="_blank">
[5]	杨军，高文学，金乾坤. 岩石动态损伤特性实验及爆破模型[J]. 岩石力学与工程学报，2001，20(3)：320-323.(YANG Jun，GAO Wenxue，JIN Qiankun. Experiment on dynamic damage property of rock and a new damage model for rock fragmentation by blasting[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(3)：320-323.(in Chinese))
[9]	GRADY D E，KIPP M E. Dynamic rock fragmentation[C]// ATKINSON B K ed. Fracture Mechanics of Rock. London：Academic Press，1987：75-429. " target="_blank">
[15]	LIU L Q，KATSABANIS P D. Development of a continuum damage model for blasting analysis[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1997，34(2)：217-231. " target="_blank">