基于真三轴单面卸荷强度双折减法修正D-P准则研究

doi:10.13722/j.cnki.jrme.2018.0135

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (993 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为了准确地评价巷(隧)道开挖面附近围岩的稳定性，采用真三轴卸荷扰动岩石测试系统对大理岩进行不同主应力加卸载试验，研究大理岩强度参数的演化特征。基于Mohr-Coulomb(M-C)准则与Drucker-Prager(D-P)系列准则匹配关系推导分析，探讨黏聚力c、内摩擦角?和Lode参数值的变化规律，确定最大衰减路径，得出黏聚力c和内摩擦角?的强度双折减系数。研究结果表明：(1) M-C准则和D-P准则计算破坏强度的条件是主应力为对称加卸载，在最小主应力单面卸荷的条件下，其准则计算的破坏强度值偏高；(2) M-C准则通过强度双折减后计算的破坏强度值偏低；(3) 基于M-C准则强度双折减法对D-P准则进行修正，计算的破坏强度值更接近实际情况。研究结果对于控制地下工程灾害、保障施工安全具有重要的指导意义。

	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
	许文松1
	2
	3
	赵光明1
	2
	孟祥瑞1
	2
	程详1
	2

关键词 ：岩石力学, 真三轴试验, 强度双折减法, 不同主应力, 岩爆

Abstract：To evaluate the safety of rock around the excavation front of roadway in mine or mountain ridge， tests on griotte under different loadings and unloadings of principal stress were conducted using true triaxial system. The variation of cohesion c，internal friction angle ，and Lode parameter of griotte were discussed in detail according to the Mohr-Coulomb and Drucker-Prager criterions. The maximum attenuation path was obtained and the double attenuation coefficient of the cohesion c and internal friction angle was calculated. The results indicate that the condition for calculating the fracture strength based on M-C and D-P criterion is that the principal stress is loaded symmetrically. Under the condition of single sided unloading in the direction of minimum principal stress，the fracture strength calculated with the criterion is higher. The fracture strength value calculated with the double attenuation coefficient method based on M-C criterion is lower. The calculated fracture strength value using the D-P criterion that is modified by the strength reduction method based on the M-C criterion is closer to the actual situation.

Key words： rock mechanics true triaxial test strength double reductions different principal stresses rockburst

引用本文:

许文松1，2，3，赵光明1，2，孟祥瑞1，2，程详1，2. 基于真三轴单面卸荷强度双折减法修正D-P准则研究[J]. 岩石力学与工程学报, 2018, 37(8): 1813-1822.
XU Wensong1，2，3，ZHAO Guangming1，2，MENG Xiangrui1，2，CHENG Xiang1，2. Modified D-P criterion based on the double-fold reduction method of the true triaxial single-side unloading strength. , 2018, 37(8): 1813-1822.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.0135 或 http://www.rockmech.org/CN/Y2018/V37/I8/1813

[8]	GRIFFITHS D V，LANE P A. Slope stability analysis by finite elements[J]. Geotechnique，1999，49(3)：387-403.
[1]	齐庆新，陈尚本，王怀新，等. 冲击地压、岩爆、矿震的关系及其数值模拟研究[J]. 岩石力学与工程学报，2003，22(11)：1 852-1 858. (QI Qingxin，CHAN Shangben，WANG Huaixin，et al. Study on the relations among coal bump，rockburst and mining tremor with numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(11)：1 852-1 858.(in Chinese))
[3]	范勇，江璐，卢文波，等. 圆形隧洞爆破荷载与瞬态卸荷作用围岩应变能效应研究[J]. 岩石力学与工程学报，2017，36(8)：1 855- 1 866.(FAN Yong，JIANG Lu，LU Wenbo，et al. Strain energy characteristics of surrounding rock under blasting load and transient release of geostress during excavation of circular tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(8)：1 855- 1 866.(in Chinese))
[4]	刘泉声，魏莱，刘学伟，等. 基于Griffith强度理论的岩石裂纹起裂经验预测方法研究[J]. 岩石力学与工程学报，2017，36(7)：1 561-1 569.(LIU Quansheng，WEI Lia，LIU Xuewei，et al. A revised empirical method for predicting crack initiation based on Griffith strength criterion[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(7)：1 561-1 569.(in Chinese))
[7]	ZIENKIEWICZ O C，HUMPHESON C，LEWIS R W. Associated and non-associated visco-plasticity and plasticity in soil mechanics[J]. Geotechnique，1975，25(4)：671-689.
[10]	董天文，郑颖人. 桩基础双折减系数有限元强度折减法极限分析[J].岩土力学，2011，32(10)：3 148-3 154.(DONG Tianwen，ZHENG Yingren. Strength reduction of limit analysis finite element method for pile foundation by two reduction factors[J]. Rock and Soil Mechanics，2011，32(10)：3 148-3 154.(in Chinese))
[12]	王学滨. 岩样单轴压缩塑形变形及断裂能研究[J]. 岩石力学与工程学报，2005，24(10)：1 735-1 739.(WANG Xuebing. Analysis of plastic deformation and fracture energy of rock specimen in uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(10)：1 735-1 739.(in Chinese))
[13]	李地元，孙志，李夕兵，等. 不同应力路径下花岗岩三轴加卸载力学相应及其破坏特征[J]. 岩石力学与工程学报，2016，35(2)： 3 449-3 457.(LI Diyuan，SUN Zhi，LI Xbing，et al. Mechanical response and failure characteristics of granite under different stress paths in triaxial loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(2)：3 449-3 457.(in Chinese))
[16]	LI D Y，CHARLIE C L，LI X B. Influence of sample height-to-width ratios on failure mode for rectangular prism samples of hard rock loaded in uni axial compression[J]. Rock Mechanics and Rock Engineering，2011，44(3)：253-267.
[19]	何满潮，苗金丽，李德建，等. 深部花岗岩试样岩爆过程实验研究[J]. 岩石力学与工程学报，2007，26(5)：865-876.(HE Manchao，MIAO Jinli，LI Dejian，et al . Experimental study on rockburst processes of granite specimen at great depth[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：865-876.(in Chinese))
[22]	DIEDERICHS M S，KAISER P K，EBERHARDT E. Damage initiation and propagation in hard rock during tunnelling and the influence of near-face stress rotation[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(5)：785-812.
[2]	黄书岭，冯夏庭，张传庆. 岩体力学参数的敏感性综合评价分析方法研究[J]. 岩石力学与工程学报，2008，27(增1)：2 624-2 630. (HUANG Shuling，FENG Xiating，ZHANG Chuanqing. Study of method of comprehensive evaluation for parameters of constitutivemodel of rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2 624-2 630.(in Chinese))
[5]	李斌，许梦国，刘艳章，等. 三轴条件下完整岩石Hoek-Brown强度准则的改进[J]. 采矿与安全学报，2015，32(6)：1 010-1 016. (LI Bin，XU Mengguo，LI Yanzhang，et al . Modified Hoek-Brown strength criterion for intact rocks under the condition of triaxial stress test[J]. Journal of Mining and Safe Engineering，2015，32(6)：1 010-1 016. (in Chinese))
[11]	YAOHONG S. Double reduction factors approach to the stability of side slopes[J]. Communication in Computer and Information Science，2010，106(1)：31-39.
[14]	黄达，黄润秋，张永兴. 粗晶大理岩单轴压缩力学特性的静态加载速率效应及能量机制试验研究[J]. 岩石力学与工程学报，2012，31(2)：245-255.(HUANG Da，HUANG Runqiu，ZHANG Yongxing. Experimental investigations on static loading rate effects on mechanical properties and energy mechanism of coarse crystal grain marble under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(2)：245-255.(in Chinese))
[20]	楚锡华，徐远杰，孔科. M-C与D-P屈服准则计算参数的能量等效方法及误差分析[J]. 岩石力学与工程学报，2009，28(8)：1 666- 1 673.(CHU Xihua，XU Yuanjie，KONG Ke. Energy equivalent method for calculating parameters of M-C and D-P criteria and error analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 666-1 673.(in Chinese))
[23]	YUAN W，BAI B，LI X C，et al. Strength reduction method based double reduction parameters and its application[J]. Journal of Central South University of Technology，2013，20：2 555-2 562.
[9]	ZHANG H，LIUD F，LI C G. Slope stability analysis based on elasto-plastic finite element method[J]. International Journal for Numerical Methods in Engineering，2005，64(14)：1 871-1 888.
[18]	李地元，孙志，李夕兵，等. 不同应力路径下花岗岩三轴加卸载力学相应及其破坏特征[J]. 岩石力学与工程学报，2016，35(2)：3 449- 3 457.(LI Diyuan，SUN Zhi，LI Xbing，et al. Mechanical response and failure characteristics of granite under different stress paths in triaxial loading and unloading conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(2)：3 449-3 457.(in Chinese))
[6]	STACEY T R，DE JONGH C L. Stress fracturing around a deep level bored tunnel[J]. Journal of the South African Institute of Mining and Metallurgy，1977，78(5)：124-133.
[17]	尹光志，鲁俊，李星，等. 应力Lode角对砂岩变形特性影响[J]. 土木建筑与环境工程，2017，36(9)：2 081-2 091.(YIN Guangzhi，LU Jun，LI Xing，et al. Influence of stress Lode angle on deformation characteristics of sandstone[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 081-2 091.(in Chinese))
[15]	张黎明，高速，任明远，等. 大理岩破坏起裂应力及断裂能量特征试验研究[J]. 土木建筑与环境工程，2014，36(4)：69-73.(ZHANG Liming，GAO Su，REN Mingyuan，et al. Experimental analysis on crack initiation stress and rupture energy of marble failure[J]. Journal of Civil，Architectural and Environmental Engineering，2014，36(4)：69-73.(in Chinese))
[21]	陈鹏，徐博侯. 基于?取值区间的D-P系列准则与M-C准则匹配方法[J]. 力学季刊，2012，33(2)：269-274.(CHEN Peng，XU Bohou. Matching method of D-P yield criterions to M-C based on value of internal frictional angle[J]. Chinese Quarterly of Mechanics，2012，33(2)：269-274.(in Chinese))
[24]	BAI B，YUAN W，LI X C. A new double reduction method for slope stability analysis[J]. Journal of Central South University，2014，21(3)：1 158-1 164.