袁新华
YUAN Xin-hua

• 1:河南建筑职业技术学院建筑工程系

摘要(Abstract)：

为探究混合岩在不同围压下破坏过程中的能量演化特征和损伤演化规律，利用伺服试验机对混合岩进行了轴向压缩试验。结果表明，混合岩不同破坏阶段的弹性应变能、耗散能的变化情况不同，屈服强度之前，能量基本以弹性应变能为主，耗散能几乎为0,屈服强度之后，弹性应变能减小后保持稳定，耗散能急剧增加。基于试样弹性应变能与总吸收能之比的定量指标将试破坏的过程分为3个阶段，依此为裂隙稳定扩展阶段、裂隙加速扩展阶段和裂隙贯通阶段。将混合岩的损伤演化过程分为4个阶段，分别为初始损伤阶段、损伤稳定发展阶段、损伤加速发展阶段和残余损伤阶段。
In order to investigate the energy evolution characteristics and damage evolution law of the mixed rock during the damage process under different surrounding pressure, the axial compression test was conducted on the mixed rock by using servo testing machine. The results show that the changes of elastic strain energy and dissipation energy of mixed rock in different damage stages are different. Before yield strength, the energy is basically dominated by elastic strain energy and the dissipation energy is almost zero, and after yield strength, the elastic strain energy decreases and then remains stable and the dissipation energy increases sharply. Based on the quantitative index of the ratio of elastic strain energy to total absorbed energy of the specimen, the process of test damage is divided into three stages, in this order, the stage of stable fracture expansion, the stage of accelerated fracture expansion and the stage of fracture penetration. The damage evolution process of mixed rock is divided into four stages, which are the initial damage stage, the damage stable development stage, the damage accelerated development stage and the residual damage stage.

关键词(KeyWords)： 混合岩;轴向压缩;变形破坏;能量机制;损伤演化
mixed rock;axis compression;deformation and failure;energy mechanism;damage evolution

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 袁新华
YUAN Xin-hua

DOI: 10.19931/j.EB.20210272

参考文献(References)：

• [1] 杨圣奇，徐卫亚，苏承东.岩样单轴压缩变形破坏与能量特征研究[J].固体力学学报，2006,27(2):213-216.YANG S Q,XU W Y,SU C D.Study on deformation failure and energy properties of rock specimen in uniaxial compression[J].Acta Mechanica Solida Sinica,2006,27(2):213-216.
• [2] 杨圣奇，徐卫亚，苏承东.大理岩三轴压缩变形破坏与能量特征研究[J].工程力学，2007,24(1):136-141.YANG S Q,XU W Y,SU C D.Study on the deformation failure and energy properties of marble specimen under triaxial compression[J].Engineering Mechanics,2007,24(1):136-141.
• [3] 侯连浪，刘向君，梁利喜，等.滇东黔西松软煤岩三轴压缩力学特性及能量演化特征[J].中国安全生产科学技术，2019,15(2):105-110.HOU L L,LIU X J,LIANG L X,et al.Triaxial compression mechanical properties and energy evolution characteristics of soft coal and rock in eastern Yunnan and Western Guizhou[J].Journal of Safety Science and Technology,2019,15(2):105-110.
• [4] 孙雪，李二兵，段建立，等.北山花岗岩三轴压缩下声发射特征及损伤演化规律研究[J].岩石力学与工程学报，2018,37(S2):4 234-4 244.SUN X,LI E B,DUAN J L,et al.Research on acoustic emission characteristics and damage evolution of beishan granite by triaxial compression[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(S2):4 234-4 244.
• [5] 张晋勋，杨昊，单仁亮，等.冻结饱水砂卵石三轴压缩强度试验研究[J].岩土力学，2018,39(11):3 993-4 000,4016.ZHANG J X,YANG H,SHAN R L,et al.Experimental research on triaxial compressive strength of frozen saturated sandy gravel[J].Rock and Soil Mechanics,2018,39(11):3 993-4 000,4 016.
• [6] 秦越，王磊，苏宏明，等.白垩系冻结砂岩动态统计损伤本构关系研究[J].工程爆破，2021,27(3):42-50.QIN Y,WANG L,SU H M,et al.Study on dynamic statistical damage constistutive relation of cretaceous sandstone [J].Engineering Blasting,2021,27(3):42-50.
• [7] 谢和平，彭瑞东，鞠杨.岩石变形破坏过程中的能量耗散分析[J].岩石力学与工程学报，2004,23(21):3 565-3 570.XIE H P,PENG R D,JU Y.Energy dissipation of rock deformation and fracture [J].Chinese Journal of Rock Mechanics and Engineering,2004,23(21):3 565-3 570.
• [8] 谢和平，鞠杨，黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报，2005,24(17):3 003-3 010.XIE H P,JU Y,LI L Y.Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(17):3 003-3 010.
• [9] 谢和平，彭瑞东，鞠杨，等.岩石破坏的能量分析初探[J].岩石力学与工程学报，2005,24(15):2 604-2 608.XIE H P,PENG R D,JU Y,et al.On energy analysis of rock failure[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(15) :2 604-2 608.
• [10] 温韬，唐辉明，刘佑荣，等.不同围压下板岩三轴压缩过程能量及损伤分析[J].煤田地质与勘探，2016,44(3):80-86.WEN T,TANG H M,LIU Y R,et al.Energy and damage analysis of slate during triaxial compression under different confining pressures[J].Coal Geology & Exploration,2016,44(3):80-86.
• [11] 田勇，俞然刚.不同围压下灰岩三轴压缩过程能量分析[J].岩土力学，2014,35(1):118-122,129.TIAN Y,YU R G.Energy analysis of limestone during triaxial compression under different confining pressures[J].Rock and Soil Mechanics,2014,35(1):118-122,129.
• [12] 苏承东，张振华.大理岩三轴压缩的塑性变形与能量特征分析[J].岩石力学与工程学报，2008,27(2):273-280.SU C D,ZHANG Z H.Aanlysis of plastic deformation and energy property of marble under pseudo-triaxial compression[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(2):273-280.
• [13] 杨永明，鞠杨，陈佳亮，等.三轴应力下致密砂岩的裂纹发育特征与能量机制[J] .岩石力学与工程学报，2014,33(4):691-698.YANG Y M,JU Y,CHEN J L et al.Cracks development features and energy mechanism of dense sandstone subjected to triaxial stress[J] Chinese Journal of Rock Mechanics and Engineering,2014,33(4):691-698.
• [14] 徐文彬，宋卫东，王东旭，等.胶结充填体三轴压缩变形破坏及能量耗散特征分析[J].岩土力学，2014,35(12):3 421-3 429.XU W B,SONG W D,WANG D X,et al Characteristic analysis of deformation failure and energy dissipation of cemented backfill body under triaxial compression[J].Rock and Soil Mechanics,2014,35(12):3 421-3 429.
• [15] 张涛江，常来山，杨涛.混合岩变形及损伤演化试验研究[J].中国矿业，2020,29(11):184-189.ZHANG T J,CHANG L S,YANG T.Experimental study on deformation and damage evolution of mixed rock [J].China Mining Magazine,2020,29(11):184-189.
• [16] 武亚林.混合岩细观损伤的循环加卸载实验研究[D].鞍山：辽宁科技大学，2020.WU Y L.Experimental study on cyclic loading and unloading of fine view damage in mixed rock [D].Anshan:Liaoning University of Science and Technology,2020.
• [17] 孙彦琪.辽南地区混合岩的变质-变形特征及区域构造意义[D].北京：中国地质大学(北京),2020.SUN Y Q.Metamorphic-deformation characteristics of mixed rocks in Liaonan and regional tectonic significance[D].Beijing:China University of Geosciences (Beijing),2020.
• [18] CHEN Z Q,H H C,DI W,et al.Fracture evolution and energy mechanism of deep-buried carbonaceous slate[J].Acta Geotechnica,2017,12(6):1 243-1 260.