单轴压缩条件下裂隙岩样冻融损伤破坏模式分析

doi:10.7522/j.issn.1000-0240.2017.0040

冰川冻土 ›› 2017, Vol. 39 ›› Issue (2): 351-357.doi: 10.7522/j.issn.1000-0240.2017.0040

单轴压缩条件下裂隙岩样冻融损伤破坏模式分析

路亚妮¹, 李新平², 吴兴宏³

1. 湖北工程学院土木工程学院, 湖北孝感 432000;
2. 武汉理工大学道路桥梁与结构工程重点实验室, 湖北武汉 430070;
3. 湖北工程学院基本建设管理处, 湖北孝感 432000

收稿日期:2016-12-25 修回日期:2017-02-03 出版日期:2017-04-25 发布日期:2017-07-08
通讯作者: 吴兴宏,E-mail:lyn2016@hbeu.edu.cn E-mail:lyn2016@hbeu.edu.cn
作者简介:路亚妮(1979-),女,陕西西安人,副教授,2013年在武汉理工大学获博士学位,从事岩土工程方面的教学与研究工作.E-mail:siyu-1979@126.com
基金资助:
国家自然科学基金项目（51274157；51204128）；湖北省自然科学基金项目（2014CFB575）资助

Failure modes of fractured rock masses under freeze-thaw action and load

LU Yani¹, LI Xinping², WU Xinghong³

1. School of Civil Engineering, Hubei Engineering University, Xiaogan 432000, Hubei, China;
2. Key Laboratory of Roadway Bridge & Structure Engineering, Wuhan University of Technology, Wuhan 430070, China;
3. Construction Management Office, Hubei Engineering University, Xiaogan 432000, Hubei, China

Received:2016-12-25 Revised:2017-02-03 Online:2017-04-25 Published:2017-07-08

摘要/Abstract

摘要： 以寒区裂隙岩体为研究对象，采用水泥砂浆类岩石材料制作具有不同几何特征的裂隙岩样，对预制的不同裂隙岩样进行冻融循环试验和单轴压缩试验，研究裂隙长度、裂隙倾角、裂隙数目以及冻融循环次数对试件贯通模式的影响。试验表明：裂隙岩体的几何特征以及冻融循环作用对岩体损伤破坏模式有较大影响。随着冻融循环次数的增加，岩样破裂面的破裂程度越来越严重，破坏模式也越来越复杂；裂隙倾角为30°的裂隙岩样，主要发生拉伸破坏，而裂隙倾角为60°的裂隙岩样，则表现为拉剪贯通，且双裂隙岩样岩桥间多出现压剪裂纹，对于裂隙倾角为90°的岩样，裂隙数目以及裂隙长度对其影响不大，均为劈裂破坏，且破坏面不一定为裂隙面；预制裂隙长度越大，越容易产生除了主拉裂纹以外的支裂纹（压裂纹）。研究结果可为寒区岩体工程建设及运营提供科学的参考。

关键词: 冻融循环, 单轴压缩, 裂隙岩体, 破坏模式, 岩石力学

Abstract: Taking fractured rock masses as the research object, using rock-like materials produced rock specimens with different geometric characteristics, freeze-thaw experiments and uniaxial compression tests of fractured rock samples have been carried out to investigate the influence of different crack dip angle, crack length, crack number and freezing-thawing cycles on the damage failure modes. The results of the experiments demonstrated that the existence of joint and freezing-thawing cycles have much effect on the damage failure modes. Rock rupture degree becomes more and more serious, and failure modes are becoming more and more complicated with the increase of freeze-thaw cycles; Failure modes of the fractured rock masses are different between single crack and double cracks. Tensile fracture modes often appear when the fissure angle is 30 degrees, mixed modes (shear and compression) take on when the fissure angle is 60 degrees, failure modes present splitting failure when the fissure angle is 90 degrees. The surface of specimens makes more compression cracks besides principal tensile crack with increasing crack length. The above research conclusions can provide valuable references to the constructions and safety operation.

Key words: freezing-thawing cycles, uniaxial compression test, jointed rock masses, failure mode, rock mechanic

中图分类号:

TU45

路亚妮, 李新平, 吴兴宏. 单轴压缩条件下裂隙岩样冻融损伤破坏模式分析[J]. 冰川冻土, 2017, 39(2): 351-357.

LU Yani, LI Xinping, WU Xinghong. Failure modes of fractured rock masses under freeze-thaw action and load[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2017, 39(2): 351-357.

参考文献

[1] Liu Weidong. Scientific understanding of the Belt and road initi-ative of China and related research themes[J]. Progress in Geography, 2015, 34(5): 538-544. [刘卫东. "一带一路"战略的科学内涵与科学问题［J]. 地理科学进展, 2015, 34(5): 538-544.］
[2] Deng Hongwei, Tian Weigang, Zhou Keping, et al. Progress in freezing-thawing rock mechanics during the period of 2001 to 2012[J]. Science and Technology Review, 2013, 31(24): 74-79. [邓红卫, 田维刚, 周科平, 等. 2001-2012年岩石冻融力学研究进展［J]. 科技导报, 2013, 31(24): 74-79.］
[3] Inada Y, Yokota K. Some studies of low temperature rock strength[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1984, 21(3): 145-153.
[4] Aoki K, Hibiya K, Yoshida T. Storage of refrigerated liquefied gases in rock caverns: characteristics of rock under very low temperatures[J]. Tunnelling and Underground Space Technology, 1990, 5(4): 319-325.
[5] Yamabe T, Neaupane K M. Determination of some thermo-mechanical properties of Sirahama sandstone under subzero temperature condition[J]. International Journal of Rock Mechanics and Mining Sciences, 2001, 38(7): 1029-1034.
[6] Wang Lehua, Jiang Zhaorong, Li Jianlin, et al. The bedding sandstone unloading mechanical properties experimental study in the freeze-thaw cycle conditions[J]. Journal of Glaciology and Geocryology, 2016, 38(4): 1052-1058. [王乐华, 姜照容, 李建林, 等. 冻融循环条件下层理砂岩卸荷力学特性试验研究［J]. 冰川冻土, 2016, 38(4): 1052-1058.］
[7] Zhou Zhidong, Liu Wu. Analysis of the influences of freezing-thawing action on rock slope stability of water conservancy engineering in high cold areas[J]. Journal of Glaciology and Geocryology, 2015, 37(5): 1268-1274. [周志东, 刘武. 高原寒区冻融作用对水利工程基岩边坡稳定性影响分析［J]. 冰川冻土, 2015, 37(5): 1268-1274.］
[8] Yang Gengshe, Zhou Chunhua, Tian Yingguo, et al. Primary experimental study on moisture and heat transfer of soft rock material during its freezing and thawing[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(9): 1765-1770. [杨更社, 周春华, 田应国, 等. 软岩类材料冻融过程水热迁移的实验研究初探［J]. 岩石力学与工程学报, 2006, 25(9): 1765-1770.］
[9] Liu Quansheng, Huang Shibing, Kang Yongshui, et al. Advance and review on freezing-thawing damage of fractured rock[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34(3): 452-471. [刘泉声, 黄诗冰, 康永水, 等. 裂隙岩体冻融损伤研究进展与思考［J]. 岩石力学与工程学报, 2015, 34(3): 452-471.］
[10] Chen Weizhong, Li Shucai, Qiu Xiangbo, et al. Experimental and numerical research on crack propagation in rock under compression[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(1): 18-23. [陈卫忠, 李术才, 邱祥波, 等. 岩石裂纹扩展的实验与数值分析研究［J]. 岩石力学与工程学报, 2003, 22(1): 18-23.］
[11] Xu Shuanhai, Li Ning, Yuan Kekuo, et al. Strength behavior of frozen fractured ice-filled rock mass and research status of slope instability during thawing[J]. Journal of Glaciology and Geocryology, 2016, 38(4): 1106-1120. [徐拴海, 李宁, 袁克阔, 等. 融化作用下含冰裂隙冻岩强度特性及寒区边坡失稳研究现状［J]. 冰川冻土, 2016, 38(4): 1106-1120.］
[12] Li Xinping, Lu Yani, Wang Yangjun. Research on damage model of single jointed rock masses under coupling action of freeze-thaw and loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2013(11): 2307-2315. [李新平, 路亚妮, 王仰君. 冻融荷载耦合作用下单裂隙岩体损伤模型研究［J]. 岩石力学与工程学报, 2013(11): 2307-2315.］
[13] Lu Yani, Li Xinping, Wu Xinghong. Fracture coalescence mechanism of single flaw rock specimen due to freeze-thaw under triaxial compression[J]. Rock and Soil Mechanics, 2014, 35(6): 609-615. [路亚妮, 李新平, 吴兴宏. 三轴压缩条件下冻融单裂隙岩样裂缝贯通机制［J]. 岩土力学, 2014, 35(6): 609-615.］
[14] Farmer I W, Engineering properties of rocks[M]. 2nd Ed. London: Chapman & hall, 1983.
[15] Liu Hua, Niu Fujun, Xu Zhiying, et al. Acoustic experimental study of two types of rock from the tibetan plateau under the condition of freeze-thaw cycles[J]. Journal of Glaciology and Geocryology, 2011, 33(3): 557-563. [刘华, 牛富俊, 徐志英, 等. 循环冻融条件下安山岩和花岗岩的物理力学特性试验研究［J]. 冰川冻土, 2011, 33(3): 557-563.］
[16] Wen Lei, Li Xibing, Yin Yanbo, et al. Study of physico-mechanical properties of granite porphyry and limestone in slopes of open-pit metal mine under freezing-thawing cycles and their application[J]. Journal of Glaciology and Geocryology, 2014, 36(3): 632-639. [闻磊, 李夕兵, 尹彦波, 等. 冻融循环作用下花岗斑岩和灰岩物理力学性质对比分析及应用研究［J]. 冰川冻土, 2014, 36(3): 632-639.］
[17] Liu Hongyan, Liu Ye, Xing Chuangfeng, et al. Test study of damage failure of jointed rock mass under freezing-thawing cycles[J]. Rock and Soil Mechanics, 2014, 35(6): 1547-1554. [刘红岩, 刘冶, 邢闯锋, 等. 循环冻融条件下节理岩体损伤破坏试验研究［J]. 岩土力学, 2014, 35(6): 1547-1554.］
[18] Hori M. Micromechanical analysis on deterioration due to freezing and thawing in porous brittle materials[J]. International Journal of Engineering Science, 1998, 36(4): 511-522.

单轴压缩条件下裂隙岩样冻融损伤破坏模式分析

Failure modes of fractured rock masses under freeze-thaw action and load

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	张向东, 任昆. 煤渣改良土的抗冻能力及损伤特性研究[J]. 冰川冻土, 2018, 40(4): 764-772.
[2]	侯鑫, 马巍, 李国玉, 周志伟, 黄永庭. 冻融循环对硅酸钠固化黄土力学性质的影响[J]. 冰川冻土, 2018, 40(1): 86-93.
[3]	王永岩, 柳雪庆, 苏传奇, 张余标, 魏剑. 冻融循环对不同孔隙率页岩相似材料影响的试验研究[J]. 冰川冻土, 2018, 40(1): 102-109.
[4]	房建宏, 陈鑫, 徐安花, 张泽. 冻融循环对青藏红黏土物理力学性质影响试验研究[J]. 冰川冻土, 2018, 40(1): 62-69.
[5]	崔宏环, 裴国陆, 姚世军, 王高勇, 张治国. 不同养生龄期下水泥土经冻融循环后力学性能试验探究[J]. 冰川冻土, 2018, 40(1): 110-115.
[6]	张向东, 任昆, 李军. EPS颗粒改良土作为寒区路基填料的抗冻性能研究[J]. 冰川冻土, 2017, 39(6): 1273-1280.
[7]	张琳瑶, 刘大翔, 许文年, 童标. 冻融循环条件下生境基材中三种功能微生物数量变化规律研究[J]. 冰川冻土, 2017, 39(5): 1122-1129.
[8]	刘雨彤, 杨林. 冻融作用下PPF稳定土力学性能研究[J]. 冰川冻土, 2017, 39(4): 850-857.
[9]	王强, 尹钰婷, 崔进杨, 汤瑞. 冻融循环条件下水泥固化铅污染土强度模型研究[J]. 冰川冻土, 2017, 39(3): 623-628.
[10]	张鹏, 李春城, 李国玉, 王学力, 王飞. 冻融循环对多年冻土区石油迁移影响试验研究[J]. 冰川冻土, 2016, 38(5): 1325-1331.
[11]	王冲, 赖远明, 尤哲敏, 杨勇, 余东合, 刘国华. 温度和含水状态对岩石劈裂强度影响的试验研究[J]. 冰川冻土, 2016, 38(5): 1317-1324.
[12]	李丽, 张坤, 张青龙, 毛云程, 李国玉. 干湿和冻融循环作用下黄土强度劣化特性试验研究[J]. 冰川冻土, 2016, 38(4): 1142-1149.
[13]	徐拴海, 李宁, 袁克阔, 王晓东, 许刚刚, 武搏强, 朱世彬. 融化作用下含冰裂隙冻岩强度特性及寒区边坡失稳研究现状[J]. 冰川冻土, 2016, 38(4): 1106-1120.
[14]	崔宏环, 刘建坤, 张立群, 李仲玉. 寒区路基改良土冻融循环与荷载耦合作用下损伤力学研究[J]. 冰川冻土, 2016, 38(4): 1183-1188.
[15]	王乐华, 姜照容, 李建林, 汤开宇, 金晶. 冻融循环条件下层理砂岩卸荷力学特性试验研究[J]. 冰川冻土, 2016, 38(4): 1052-1058.