考虑扩容碎胀特性的岩石本构模型研究与验证

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1107 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要高应力卸荷条件下岩石扩容碎胀非连续变形行为研究对揭示深部巷道围岩稳定性演化及控制机制，分析预测围岩稳定性具有至关重要的意义。为此，依托室内岩石三轴卸荷试验，首先研究全应力–应变曲线各特征应力值随围压变化的演化特征，提出岩石进入峰前损伤扩容与峰后破裂碎胀阶段的临界条件准则，并考虑扩容碎胀破裂演化过程中岩样力学性质劣化规律，建立描述卸荷条件下岩石损伤扩容和破裂碎胀演化机制的本构模型，采用VC++编程语言将该模型嵌入到UDEC软件中，实现其非线性数值计算功能。同时，通过室内岩石试验曲线的模拟拟合，表明该模型在描述岩石扩容碎胀特性方面的合理性。最后，将该模型应用于一典型深部巷道围岩破损区分布的模拟研究中，通过与经典模型的对比分析，验证该模型在工程应用方面的可行性，并有针对性地提出深部巷道稳定性分析与维护的合理化建议。

	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, 深部巷道, 扩容碎胀变形, 临界条件准则, 力学性质劣化, 本构模型

Abstract：The rock dilatancy-bulking deformation characteristics under high geostress unloading condition are critically important to understand the stability evolution and control mechanism of deep roadways，and to evaluate the stability of surrounding rocks. Using the triaxial unloading tests on the rocks sampled from the Gubei colliery，the evolution characteristics of the typical stresses with confining pressure are first studied. The criterion of rocks approaching pre-peak damage dilatancy and post-peak bulking deformation under critical condition is proposed. Then，the damage and degradation process of mechanical parameters of rocks during unloading are considered，and a progressive failure constitutive model is subsequently constructed. Finally，the distinct element code UDEC is embedded into the model to realize nonlinear numerical calculation. Simulation results of triaxial unloading tests show that the proposed model is suitable for describing the rock dilatancy-bulking deformation characteristics. Besides，the proposed model is used to evaluate the excavation damaged zone(EDZ) around a deep roadway. Compared with classical Mohr-Coulomb strain softening model，the performances of the proposed model are suggested to be applicable for practical engineering，and helpful for stability analysis and maintenances of deep roadways.

Key words： rock mechanics deep roadway dilatancy-bulking deformation critical condition criterion degradation of mechanical parameters constitutive model

收稿日期: 2012-12-31

引用本文:

卢兴利1，刘泉声1，苏培芳2. 考虑扩容碎胀特性的岩石本构模型研究与验证[J]. 岩石力学与工程学报, 2013, 32(9): 1886-1893.
LU Xingli1，LIU Quansheng1，SU Peifang2. CONSTITUTIVE MODEL OF ROCKS CONSIDERING DILATANCY-BULKING BEHAVIOUR AND ITS CALIBRATION. , 2013, 32(9): 1886-1893.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/I9/1886

[1]	王显政. 中国超千米深井数量增加加剧煤炭瓦斯治理隐患[EB/OL]. http://jjckb.xinhuanet.com/2011-05/15/content_308551.htm，2011-05-14/2011-05-15.(WANG Xianzheng. The increase of deep well in China exacerbates the risk of coal gas control hazards[EB/OL]. http://jjckb.xinhuanet.com/2011-05/15/content_308551.htm，2011-05-14/2011-05-15.(in Chinese))
[2]	刘泉声，高玮，袁亮. 煤矿深部岩巷稳定控制理论与支护技术及应用[M]. 北京：科学出版社，2010：42-48.(LIU Quansheng，GAO Wei，YUAN Liang. Stability control theory and support technology of roadway in deep coal and its application[M]. Beijing：Science Press，2010：42-48.(in Chinese)) " target="_blank">
[4]	MATSUSHIMA S. On the flow and fracture of igneous rocks and on the deformation and fracture of granite under high confining pressure[M]. Bulletin of the Disaster Prevention Research Institute，Kyoto University，1960：20-26. " target="_blank">
[6]	陈宗基，闻宣梅. 膨胀岩与隧洞稳定[J]. 岩石力学与工程学报，1983，2(1)：1-10.(TAN Tjongkie，WEN Xuanmei. Swelling rock and stability of tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，1983，2(1)：1-10.(in Chinese))
[8]	陈宗基，石泽全，于智海，等. 用8000kN多功能三轴仪测量脆性岩石的扩容，蠕变和松弛[J]. 岩石力学与工程学报，1989，8(2)：87-117.(TAN Tjongkie，SHI Zequan，YU Zhihai，et al. Delatancy，creep and relaxation of brittle rocks measured with the 8000KN multipurpose triaxial apparatus[J]. Chinese Journal of Rock Mechanics and Engineering，1989，8(2)：87-117.(in Chinese)) " target="_blank">
[11]	靖洪文，李世平，牟宾善. 零围压下岩石剪胀性能的试验研究[J]. 中国矿业大学学报，1998，27(1)：19-22.(JING Hongwen，LI Shiping，MOU Binshan. Experimental study on the dilatancy nature of rocks under zero confining pressure[J]. Journal of China University of Mining and Technology，1998，27(1)：19-22.(in Chinese)) " target="_blank">
[13]	靖洪文. 峰后岩石剪胀性能试验研究[J]. 岩土力学，2003，24(1)：93-102.(JING Hongwen. Experimental study on dilatancy nature of the rock post-peak behavior[J]. Rock and Soil Mechanics，2003，24(1)：93-102.(in Chinese)) " target="_blank">
[15]	宋宏伟，贾颖绚，段艳燕. 开挖中的围岩破裂性质与支护对象研究[J]. 中国矿业大学学报，2006，35(2)：192-196.(SONG Hongwei，JIA Yingxun，DUAN Yanyan. Study on characteristics of rock broken by excavation and roof supporting object[J]. Journal of China University of Mining and Technology，2006，35(2)：192-196.(in Chinese)) " target="_blank">
[16]	朱建明，徐秉业，岑章志. 岩石类材料峰后滑移剪膨变形特征研究[J]. 力学与实践，2001，23(5)：19-22.(ZHU Jianming，XU Bingye，CENG Zhangzhi. Study on the deformation mechanism of sliding dilation of post-failure rocks[J]. Mechanics in Engineering，2001，23(5)：19-22.(in Chinese)) " target="_blank">
[18]	ALEJANO L R，ALONSO E. Considerations of the dilatancy angle in rocks and rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2005，42(4)：481-507. " target="_blank">
[20]	MARTIN C D. The strength of massive Lac du Bonnet granite opening around underground[Ph. D. Thesis][D]. Manitoba，The United States：University of Manitoba，1993. " target="_blank">
[22]	殷有泉，黄杰藩，王康平. 房山大理岩本构性质的实验研究[J]. 岩石力学与工程学报，1993，12(3)：240-248.(YIN Youquan，HUANG Jiefan，WANG Kangping. Experimental study of the constitutive behaviours of Fangshan marble[J]. Chinese Journal of Rock Mechanics and Engineering，1993，12(3)：240-248.(in Chinese))
[3]	BRIDGMAN P W. Volume changes in the plastic stages of simple compression[J]. Journal of Applied Physics，1949，20(12)：1 241- 1 251. " target="_blank">
[5]	LAMA R D，VUTUKURI V S. Handbook on mechanical properties of rocks[M]. Clausthal，Germany：Trans Tech Publications，1978：203-205. " target="_blank">
[7]	TAN T K，WEN X M. Time-dependent dilatancy prior to rock failure and earthquakes[C]// Proceedings of the 5th Congress ISRM. [S.l.]：[s.n.]，1983：96-102. " target="_blank">
[9]	许东俊，耿乃光. 岩体变形和破坏的各种应力途径[J]. 岩土力学，1986，7(2)：17-25.(XU Dongjun，GENG Naiguang. The various stress paths causing deformation and failure in rocks[J]. Rock and Soil Mechanics，1986，7(2)：17-25.(in Chinese)) " target="_blank">
[19]	MAHMUTOGLU Y，VARDAR M. Effects of inelastic volume increase on fractured rock behaviour[J]. Bulletin of Engineering Geology and the Environment，2003，62(2)：117-121.
[23]	HAJIABDOLMAJID V，KAISER P K，MARTIN C D. Modelling brittle failure of rock[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(6)：731-741.
[10]	李晓. 岩石峰后力学特性及其损坏软化模型的研究与应用[博士学位论文][D]. 北京：中国矿业大学，1995.(LI Xiao. Study on the post-failure behavior and damage softening model of rock and its application[Ph. D. Thesis][D]. Beijing：China University of Mining and Technology，1995.(in Chinese)) " target="_blank">
[12]	靖洪文，许国安，谢述新，等. 不同围压下大理岩剪胀试验研究[J]. 河海大学学报，2001，29(增)：31-33.(JING Hongwen，XU Guoan，XIE Shuxin，et al. Experimental study of dilatancy of marble under different confining pressures[J]. Journal of Hohai University，2001，29(Supp.)：31-33.(in Chinese)) " target="_blank">
[17]	YUAN S C，HARRISON J P. An empirical dilatancy index for the dilatant deformation of rock[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(4)：679-686.
[21]	孟召平，彭苏萍，凌标灿. 不同侧压下沉积岩石变形与强度特征[J]. 煤炭学报，2000，25(1)：15-18.(MENG Zhaoping，PENG Suping，LING Biaocan. Characters of the deformation and strength under different confining pressures on sedimentary rock[J]. Journal of China Coal Society，2000，25(1)：15-18.(in Chinese)) " target="_blank">
[14]	董芳庭，靖宏文，郭志宏，等. 围岩松动圈巷道支护理论应用技术[M]. 北京：煤炭工业出版社，2001：35-58.(DONG Fangting，JING Hongwen，GUO Zhihong，et.al. The support theory based on broken rock zone and its application technology[M]. Beijing：China Coal Industry Publishing House，2001：35-58.(in Chinese)) " target="_blank">