[1]谷中元,周科平.单向循环加载下花岗岩力学特性及红外分析[J].中国安全生产科学技术,2018,14(8):146-151.[doi:10.11731/j.issn.1673-193x.2018.08.024]
GU Zhongyuan,ZHOU Keping.Mechanical properties and infrared analysis of granite under uniaxial cyclic loading[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(8):146-151.[doi:10.11731/j.issn.1673-193x.2018.08.024]
点击复制
单向循环加载下花岗岩力学特性及红外分析
GU Zhongyuan,ZHOU Keping.Mechanical properties and infrared analysis of granite under uniaxial cyclic loading[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(8):146-151.[doi:10.11731/j.issn.1673-193x.2018.08.024]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 14
- 期数:
- 2018年8期
- 页码:
- 146-151
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2018-08-31
文章信息/Info
- Title:
- Mechanical properties and infrared analysis of granite under uniaxial cyclic loading
- 文章编号:
- 1673-193X(2018)-08-0146-06
- 分类号:
- TD853
- 文献标志码:
- A
- 摘要:
- 为了探究单向循环加卸载作用对花岗岩力学特性的影响，开展了室内循环加卸载试验。选择5次和10次循环及12%，24%，36%，48%和60%的强度振幅对花岗岩进行循环加卸载预处理，进而测试其强度，并同步进行红外AIRT检测、红外热成像分析及温度场的频数直方图分析。研究结果表明：循环加卸载对岩石起先加强后削弱的作用，36%振幅10次循环预处理条件下的花岗岩综合性能较好；岩石破坏由局部应力集中所致，并揭示出岩石破坏伴随着能量积聚到释放过程。说明循环加卸载在一定条件下存在积极效应，且红外检测对岩石破坏的应力集中特性及灾害演化研究有较好的优越性。
- Abstract:
- In order to investigate the effect of uniaxial cyclic loading and unloading on the mechanical properties of granite, the laboratory tests of cyclic loading and unloading were carried out. The pretreatment of cyclic loading and unloading was conducted on the granite with the cycle number of 5 and 10 and the intensity amplitude of 12%, 24%, 36%, 48% and 60%, thus its strength was tested, and the infrared AIRT detection, the infrared thermal imaging analysis and the frequency histogram analysis of temperature field were carried out synchronously. The results showed that the cyclic loading and unloading played the effect of strengthening first and then weakening on the rock, and the comprehensive performance of granite was better under the conditions of pretreatment with the intensity amplitude of 36% and the cycle number of 10. The rock failure was caused by the local stress concentration, and the process of rock failure along with the energy accumulation to energy release was revealed. It showed that the cyclic loading and unloading has the positive effect under certain conditions, and the infrared detection has better research advantage for the stress concentration characteristics and disaster evolution of rock failure.
参考文献/References:
［1］刘善军, 吴立新, 张艳博,等. 潮湿岩石受力过程红外辐射的变化特征［J］. 东北大学学报(自然科学版), 2010, 31(2):265-268.
LIU Shanjun, WU Lixin, ZHANG Yanbo, et al. Change feature of infrared radiation from loaded damp rock ［J］. Journal of Northeastern University (Natural Science Edication), 2010, 31(2):265-268.
［2］黎立云, 谢和平, 鞠杨,等. 岩石可释放应变能及耗散能的实验研究［J］. 工程力学, 2011, 28(3):35-40.
LI Liyun, XIE Heping, JU Yang, et al. Experimental investigations of releasable energy and dissipative energy within rock ［J］. Engineering Mechanics, 2011, 28(3):35-40.
［3］吴立新 刘善军 吴育华. 遥感-岩石力学引论:岩石受力灾变的红外遥感［M］. 北京：科学出版社, 2007.
［4］FREUND F T, TAKEUCHI A, LAU B W S, et al. Stimulated infrared emission from rocks: assessing a stress indicator［J］. Eearth, 2006, 2(1):7-16.
［5］HE Manchao , GONG W L , LI Dejian , et al. Physical modeling of failure process of the excavation in horizontal strata based on IR thermography［J］. Mining Science & Technology, 2009, 19(6):689-698.
［6］GONG W L, GONG Y X, LONG A F. Multi-filter analysis of infrared images from the excavation experiment in horizontally stratified rocks［J］. Infrared Physics & Technology, 2013, 56(2):57-68.
［7］LUONG M P. Infrared observation of failure processes plain concrete［C］.1987:870-878.
［8］刘善军, 魏嘉磊, 黄建伟,等. 岩石加载过程中红外辐射温度场演化的定量分析方法［J］. 岩石力学与工程学报, 2015(S1):2968-2976.
LIU Shanjun, WEI Jialei, HUANG Jianwei, et al. Quantitative analysis methods of infrared radiation temperature field variation in rock loading process ［J］. Chinese Journal of Rock Mechanics and Engineering, 2015(S1):2968-2976.
［9］吴立新, 李国华, 吴焕萍. 热红外成像用于固体撞击瞬态过程监测的实验探索［J］. 科学通报, 2001, 46(2):172-176.
WU Lixin, LI Guohua, WU Huanping. Experimental investigation of thermal infrared imaging at the moment of solid impact［J］. Science Bulletin, 2001, 46(2):172-176.
［10］吴立新, 吴育华, 钟声,等. 岩石撞击的热红外成像探测研究进展与方向［J］. 岩石力学与工程学报, 2006, 25(11):2180-2186.
WU Lixin, WU Yuhua, ZHONG Sheng, et al. Research progresses and directions of detection on rock impaction with thermal infrared imaging ［J］. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(11):2180-2186.
［11］马立强, 李奇奇, 曹新奇,等. 煤岩受压过程中内部红外辐射温度变化特征研究［J］. 中国矿业大学学报, 2013, 42(3):331-336.
MA Liqiang, LI Qiqi, CAO Xinqi, et al. Variation characteristics of internal infrared radiation temperature of coal-rock mass in compression process ［J］. Journal of China University of Minim & Technology, 2013, 42(3):331-336.
［12］王者超, 赵建纲, 李术才,等. 循环荷载作用下花岗岩疲劳力学性质及其本构模型［J］. 岩石力学与工程学报, 2012, 31(9):1888-1900.
WANG Zhechao, ZHAO Jiangang, LI Shucai, et al. Fatigue mechanical behavior of granite subjected to cyclic load and its constitutive model ［J］. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(9):1888-1900.
［13］赵闯. 循环荷载作用下花岗岩损伤变形与能量特征分析［D］.济南：山东大学,2014:17-19, 42-43.
［14］梁鹏, 张艳博, 田宝柱,等. 岩石破裂过程声发射和红外辐射特性及相关性实验研究［J］. 矿业研究与开发, 2015(3):57-60.
LIANG Peng, ZHANG Yanbo, TIAN Baozhu, et al. Experimental study on correlation and characteristics of acoustic emission and infrared radiation in rock failure process ［J］. Mining Research and Development, 2015(3):57-60.
［15］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):3565-3570.
XIE Heping, PENG Ruidong, JU Yang. Energy dissipation of rock deformation and fracture ［J］. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(21):3565-3570.
［16］谢和平,鞠杨,黎立云,等. 岩体变形破坏过程的能量机制［J］. 岩石力学与工程学报, 2008, 27(9):1729-1740.
XIE Heping, JU Yang, LI Liyun, et al. Energy mechanism of deformation and failure of rock masses ［J］. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(9):1729-1740.
相似文献/References:
备注/Memo
- 备注/Memo:
- 国家自然科学基金项目(51774323)
