应力波在充填节理岩体中传播规律的数值研究

doi:10.13722/j.cnki.jrme.2016.0829

摘要
图/表
参考文献(27)
相关文章 (15)

全文: PDF (535 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要通过离散元数值模拟对应力波在含一组平行充填节理岩体中的传播规律开展研究，并应用等效介质模型对应力波在含多条小间距充填节理岩体的传播规律进行分析。首先，通过数值模拟结果与理论结果的对比，验证UDEC模拟应力波在单个充填节理处的传播规律的可行性。然后将UDEC模型进行扩展研究应力波在含一组平行充填节理的岩体中的传播规律，并对充填厚度、节理间距、节理数量展开参数分析。研究发现，随着充填厚度的增加，对于不同的节理间距和数量，透射系数均减小，而节理数量对透射系数的影响与节理间距有关。存在2个临界值将节理间距对透射系数的影响规律划分为3个不同区间，当节理间距足够大时，透射系数趋于稳定，且稳定值与节理数量呈指数函数关系。最后，当节理间距较小时，采用一维等效介质多条充填节理进行分析，并对入射波频率、充填材料特性、充填厚度以及节理数量展开了参数分析对比，结果表明一维等效介质可用于简化应力波在多个小间距的充填节理中的传播计算。

	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
	刘婷婷1
	2
	3
	李新平1
	2
	李海波3
	李建春3
	罗忆1
	2

关键词 ：岩石力学, 充填节理, 应力波, 数值模拟, 透射系数

Abstract：The discrete element simulations were conducted to investigate the wave transmission across a set of parallel filled joints. In addition，the equivalent medium model was used to analyze the wave transmission across multiple filled joints with small space. Firstly，the feasibility of UDEC was verified through the comparative analysis of results of numerical simulation and two theoretical methods. Subsequently，the numerical simulation was extended to investigate the wave transmission across a set of parallel filled joints. Moreover，the parametric analysis for the effects of filled thickness，joint space and number on transmission coefficients was carried out. The results revealed that the transmission coefficient decreases with increasing the filled thickness，which is not affected by joint space and number. However，the influence of joint number on transmission coefficient is related to joint space. Note that the influence of joint space on transmission coefficient can be divided into three different ranges by two critical values. Transmission coefficient tends to be stable when the joint space is large enough. And the stable value in exponential function with joint number. Finally，the equivalent medium model was used to analyze the wave transmission across multiple filled joints with small space. Then，the effect of relevant parameters such as incident wave frequency，filled material properties，filled thickness and joint number on wave transmission was carried out. The results show that the equivalent medium model can be used to describe wave transmission across multiple filled joints with small space.

Key words： rock mechanics filled joints stress wave numerical simulation transmission coefficient

引用本文:

刘婷婷1，2，3，李新平1，2，李海波3，李建春3，罗忆1，2. 应力波在充填节理岩体中传播规律的数值研究[J]. 岩石力学与工程学报, 2016, 35(S2): 3552-3560.
LIU Tingting1，2，3，LI Xinpin1，2，LI Haibo3，LI Jianchun3，LUO Yi1，2. Numerical study on stress wave propagation across filled joints. , 2016, 35(S2): 3552-3560.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2016.0829 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS2/3552

[1] SCHOENBERG M. Elastic wave behavior across linear slip interfaces[J]. Journal of the Acoustical Society of America，1980，68(5)：1 516–1 521.

[2] PYRAK-NOLTE L J，MYER LR，COOK NGW. Transmission of seismic waves across single natural fractures[J]. Journal of Geophysical Research，，1990，95(B6)：8 617–8 638.

[3] PYRAK-NOLTE L J，MYER L R，COOK N G W. Anisotropy in seismic velocities and amplitudes from multiple parallel fractures[J]. Journal of Geophysical Research，1990，95(B7)：11 345–11 358.

[4] COOK NGW. Natural joints in rock：mechanical，hydraulic and seismic behaviour and properties under normal stress[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1992，29(3)：198–223.

[5] CAI JG，ZHAO J. Effects of multiple parallel fractures on apparent attenuation of stress waves in rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(4)：661–682.

[6] LI J C，LI H B，MA GW，et al. A time-domain recursive method to analyse transient wave propagation across rock joints[J]. Geophysical Journal International，2012，188(2)：631–644.

[7] BARTON N. Rock mechanics review，the shear strength of rock and rock joints[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1976，13(2)：255–279.

[8] MILLER R K. An approximate method of analysis of the transmission

of elastic waves through a frictional boundary[J]. Journal of Applied

Mechanics，1977，44(4)：652–656.

[9] ZHU J B，ZHAO X B，WU W，et al. Wave propagation across rock joints filled with viscoelastic medium using modified recursive method[J]. Journal of Applied Geophysics，2012，86(11)：82–87.

[10] LI J C，WU W，LI H B，et al. A thin-layer interface model for wave propagation through filled rock joints[J]. Journal of Applied Geophysics，2013，91(4)：31–38.

[11] FAN L F，WONG L N Y. Stress wave transmission across a filled joint with different loading/unloading behavior[J]. International Journal of Rock Mechanics and Mining Sciences，2013，60(8)：227–234.

[12] 李夕兵. 岩石动力学基础与应用[M]. 北京：科学出版社，2014：360–365.(LI Xibing. Rock dynamics：fundamentals and applications[M]. Beijing：Science Press，2014：360–365.(in Chinese))

[13] LI J，MA G，HUANG X. Analysis of wave propagation through a filled rock joint[J]. Rock Mechanics Rock Engineering，2010，43(6)：789–798.

[14] WU W，LI J C，ZHAO J. Seismic response of adjacent filled parallel rock fractures with dissimilar properties[J]. Journal of Applied Geophysics，2013，96(3)：33–37.

[15] 赵坚，陈寿根. 用UDEC模拟爆炸波在节理岩体中的传播[J]. 中国矿业大学学报，2002，31(2)：4–8.(ZHAO Jian，CHEN Shougen，CAI Jungang，et al. Simulation of blast wave propagation in jointed rock mass using UDEC[J]. Journal of China University of Mining and Technology，2002，31(2)：4–8.(in Chinese))

[16] ZHAO X B，ZHAO J，CAI JG，et al. UDEC modelling on wave propagation across fractured rock masses[J]. Computers and Geotechnics，2008，35(1)：97–104.

[17] 周剑，张路青，胡瑞林，等. 大型结构面产状影响下应力波传播规律研究[J]. 岩石力学与工程学报，2011，30(4)：769–780. 780.(ZHOU Jian，ZHANG Luqing，HU Ruilin，et al. Study of rules of stress waves propagation under various attitudes of large-scale fractures[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(4)：769–780.(in Chinese))

[18] 茹忠亮，蒋宇静. 弹性纵波入射粗糙节理面透射性能研究[J]. 岩石力学与工程学报，2008，27(12)：2 535–2 539. 539.(RU Zhongliang，JIANG Yujing. Research on transmission behaviors of rough joint surfaces with elastic P-wave incidence[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(12)：2 535–2 539.(in Chinese))

[19] ZHU J B，DENG X F，ZHAO X B，et al. A Numerical Study on Wave Transmission Across Multiple Intersecting Joint Sets in Rock Masses with UDEC[J]. Rock Mechanics and Rock Engineering，2013，46(6)：1 429–1 442.

[20] LI H B，LIU T T，LIU Y Q，et al. Numerical modeling of wave transmission across rock masses with nonlinear joints C[J]. Rock Mechanics and Rock Engineering，2016，49(3)：1 115–1 121.

[21] 石崇，徐卫亚，周家文. 二维波穿过非线性节理面的透射性能研究[J]. 岩石力学与工程学报，2007，26 (8)：1 645–1 652.(SHI Cong，XU Weiya，ZHOU Jiawen. Research on transmission behaviors of nonlinear joints with 2D wave propagation[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(8)：1 645–1 652.(in Chinese))

[22] 雷卫东，ASHRAF M H，滕军，等. 二维波穿过单节理的透射率特性及其隐含意义[J]. 中国矿业大学学报，2006，35(4)：492–497.(LEI Weidong，ASHRAF M H，TENG Jun，et al. Characteristics of transitivity for a single joint in 2D wave propagation and implications[J]. Journal of China University of Mining and Technology，2006，35(4)：492–497.(in Chinese))

[23] 王观石，李长洪，陈保君，等. 应力波在非线性结构面介质中的传播规律[J]. 岩土力学，2009，30(12)：3 747–3 752.(WANG Guanshi，LI Changhong，CHEN Baojun，et al. Propagation law of stress wave in nonlinear structural surface medium[J]. Rock and Soil Mechanics，2009，30(12)：3 747–3 752.(in Chinese))

[24] 张秀丽，焦玉勇，刘泉声，等. 节理对爆炸波传播影响的数值研究[J]. 岩土力学，2008，29(3)：717–721.(ZHANG Xiuli，JIAO Yuyong，LIU Quansheng，et al. Numerical study on effect of joints on blasting wave propagation in rock mass[J]. Rock and Soil Mechanics，2008，29(3)：717–721. (in Chinese))

[25] ZHAO J，SUN L，ZHU JB. Modelling P-wave transmission across rock fractures by particle manifold method(PMM)[J]. Geomechanics and Geoengineering，2012，7(3)：175–181.

[26] HUANG X，QI S，WILLIAMS A，et al. Numerical simulation of stress wave propagating through filled joints by particle model[J]. International Journal of Solids and Structures，2015，69–70：23–33.

[27] ZHAO J，ZHAO X B，CAI J G. A further study of P-wave attenuation across parallel fractures with linear deformational behaviour[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(5)：776–788.