水冷却对高温花岗岩的细观损伤及动力学性能影响

朱要亮; 俞缙; 高海东; 李刚; 周先齐; 郑小青

doi:10.11883/bzycj-2019-0169

水冷却对高温花岗岩的细观损伤及动力学性能影响

doi: 10.11883/bzycj-2019-0169

朱要亮^{1, 2,},
俞缙^1, ,,
高海东³,
李刚³,
周先齐¹,
郑小青²

1.
华侨大学福建省隧道与城市地下空间工程技术研究中心，福建厦门 361021
2.
福建江夏学院工程学院，福建福州 350108
3.
中铁十八局集团有限公司，天津 300222

基金项目: 国家自然科学基金（51874144，51679093）；福建省自然科学基金（2018J01630）

详细信息

作者简介:
朱要亮（1985－　），男，博士研究生，ziaini@126.com

通讯作者:
俞　缙（1978－　），男，博士，教授，博导，bugyu0717@163.com

中图分类号: O346.5; TU 452
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- 被引次数: 0
出版历程
- 收稿日期: 2019-04-26
- 修回日期: 2019-05-21
- 刊出日期: 2019-08-01

Effect of water cooling on microscopic damage and dynamic properties of high-temperature granite

1.
Fujian Research Center for Tunneling and Urban Underground Space Engineering, Huaqiao University, Xiamen 361021, Fujian, China
2.
College of Engineering, Fujian Jiangxia University, Fuzhou 350108, Fujian, China
3.
China Railway 18 Bureau Group Co., Ltd., Tianjin 300222, China

摘要

摘要: 为探讨高温花岗岩经水冷却后的细观结构损伤及动态力学性能，对水冷却后高温花岗岩开展波速和核磁共振测试，分离式霍普金森压杆冲击试验，以及冲击破碎试样的扫描电镜观察，分析比较不同状态下花岗岩波速、孔隙度和动力学参数的变化规律。研究发现：随着温度升高，经水冷却处理后高温花岗岩波速非线性下降，大孔径孔隙度分量增大，且水冷却后试样的孔隙孔径尺寸和数量均大于自然冷却；水冷却后高温花岗岩动力学参数呈现出随着温度升高，峰值应力减小，峰值应变增大，弹性模量则先增大后减小的规律；由于水冷却使高温花岗岩表面温度急剧降低，产生额外的温度应力，花岗岩内部损伤加剧，表现出更低的波速与峰值应力；而水的冷淬作用一定程度上提高了表层花岗岩的硬度，降低了高温后花岗岩的塑性能力，与自然冷却相比水冷却后花岗岩的峰值应变减小，弹性模量增大，表现出脆性破坏特征。在温度低于400 ℃时，冷却方式对冲击裂纹影响不大，随着温度升高到800 ℃，自然冷却后花岗岩冲击断面呈蜂窝状，而水冷却后冲击断面则相对平整。
- 高温花岗岩 /
- 水冷却 /
- 细观损伤 /
- 动力性能 /
- 冷淬作用
Abstract: The microscopic damage and dynamic mechanical properties of high-temperature granite after water cooling were studied through wave velocity test, nuclear magnetic resonance (NMR) test, split Hopkinson pressure bar (SHPB) impact test and scanning electron microscope（SEM）test. The variation of porosity and dynamic mechanical parameters of granite were analyzed. The results show that the wave velocity of high-temperature granite decreases nonlinearly after water cooling and the components of porosity with large pore increase with the increase of temperature. Moreover, water cooling leads to the more cracks and greater crack sizes than that of natural cooling. The dynamic parameters of high-temperature granite after water cooling show that the increase in temperature results in a decrease in the peak stress, an increase in the peak strain, and an increase at first then decrease in the elastic modulus. Additional thermal stress, resulted from sharply decrease in surface temperature of the high-temperature granite, leads to increased internal damage and decreased wave velocity and peak stress. Compared with natural cooling, the plasticity of high-temperature granite is reduced, because the cold hardening effect improves the hardness of surface granite. After water cooling, the granite specimens exhibit the brittle failure characteristics and their peak strain decreases but their elastic modulus increases. Cooling way has a minor effect on the cracks induced by shock before 400 ℃. As the temperature up to 800 ℃, the impact fracture surface of granite after natural cooling is characterized by honeycomb and irregular shape, in contrast, the impact fracture surface of granite after the water cooling is relatively flat.
- high-temperature granite /
- water cooling /
- microscopic damage /
- dynamic mechanical properties /
- cold hardening effect

HTML全文

图 1 高温花岗岩典型SHPB应力波形

Figure 1. Typical SHPB stress waveforms for high-temperature granite specimens

下载: 全尺寸图片幻灯片

图 2 高温花岗岩不同温度后纵波波形图

Figure 2. Longitudinal waveforms of granite sample exposed to different temperatures

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图 3 高温前后纵波波速均值对比

Figure 3. Comparison of average longitudinal wave velocity before and after exposure to high temperature

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图 4 核磁共振孔径分布及断面扫描图

Figure 4. Pore size distribution curves and scanning images of cross-sectional area

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图 5 花岗岩动态应力应变曲线图

Figure 5. Dynamic stress-strain curves of granite

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图 6 花岗岩动态峰值应力

Figure 6. Dynamic peak stress of granite

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图 7 花岗岩动态峰值应变

Figure 7. Dynamic peak strain of granite

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图 8 弹性模量随温度变化曲线

Figure 8. Variation of dynamic elastic modulus EC with temperature

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图 9 花岗岩冲击破坏形态

Figure 9. Failure forms of granite under different temperatures and different cooling methods

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图 10 花岗岩样品成像伪彩图

Figure 10. pseudo-color image of granite sample

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图 11 温度模拟结果

Figure 11. Simulation results for temperature

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图 12 水冷却花岗岩表面裂缝

Figure 12. Surface cracks in granite specimen after water cooling

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图 13 冲击破坏后的SEM形貌

Figure 13. SEM image after impact damage

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表 1 核磁共振T₂谱面积

Table 1. T₂ spectrum area of NMR

冷却方式 T₂ 谱面积
25 ℃ 200 ℃ 400 ℃ 600 ℃ 800 ℃

自然冷却 1 852 1 910 2 086 3 072 4 029
水冷却 1 852 1 981 2 254 3 544 4 887

下载: 导出CSV

参考文献(25)

[1]	熊良宵, 虞利军. 高温作用下和高温后岩石力学特性的研究进展 [J]. 地质灾害与环境保护, 2018, 29(1): 76–82. DOI: 10.3969/j.issn.1006-4362.2018.01.015. XING Liangxiao, YU Lijun. Advances of mechanical properties of rock under high temperature and after high temperature [J]. Journal of Geolgoical Hazards and Environment Preservation, 2018, 29(1): 76–82. DOI: 10.3969/j.issn.1006-4362.2018.01.015.
[2]	徐小丽, 高峰, 高亚楠, 等. 高温后花岗岩力学性质变化及结构效应研究 [J]. 中国矿业大学学报, 2008, 37(3): 402–406. DOI: 10.3321/j.issn:1000-1964.2008.03.024. XU Xiaoli, GAO Feng, GAO Ya’nan, et al. Effect of high temperatures on the mechanical characteristics and crystal structure of granite [J]. Journal of China University of Mining and Technology, 2008, 37(3): 402–406. DOI: 10.3321/j.issn:1000-1964.2008.03.024.
[3]	CHEN Y L, NI J, SHAO W, et al. Experimental study on the influence of temperature on the mechanical properties of granite under uni-axial compression and fatigue loading [J]. International Journal of Rock Mechanics & Mining Sciences, 2012, 56(15): 62–66. DOI: 10.1016/j.ijrmms.2012.07.026.
[4]	LIU S, XU J. Mechanical properties of Qinling biotite granite after high temperature treatment [J]. International Journal of Rock Mechanics and Mining Sciences, 2014, 71: 188–193. DOI: 10.1016/j.ijrmms.2014.07.008.
[5]	DWIVEDI R D, GOEL R K, PRASAD V V R, et al. Thermo-mechanical properties of Indian and other granites [J]. International Journal of Rock Mechanics and Mining Sciences, 2008, 45(3): 303–315. DOI: 10.1016/j.ijrmms.2007.05.008.
[6]	蔡燕燕, 罗承浩, 俞缙, 等. 热损伤花岗岩三轴卸围压力学特性试验研究 [J]. 岩土工程学报, 2014, 37(7): 1173–1180. DOI: 10.11779/cjge201507002. CAI Yanyan, LUO Chenghao, YU Jin, et al. experimental study on mechanical properties of thermal-damage granite rock under triaxial unloading confining pressure [J]. Chinese Journal of Geotechnical Engineering, 2014, 37(7): 1173–1180. DOI: 10.11779/cjge201507002.
[7]	刘石, 许金余, 支乐鹏, 等. 高温后大理岩的冲击力学特性试验研究 [J]. 岩石力学与工程学报, 2013, 32(2): 273–280. DOI: 10.3969/j.issn.1000-6915.2013.02.008. LIU Shi, XU Jinyu, ZHI Lepeng, et al. Experimental resarch on mechanical behaviors of marble after high temperatures subjected to impact loading [J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(2): 273–280. DOI: 10.3969/j.issn.1000-6915.2013.02.008.
[8]	李明, 茅献彪, 曹丽丽, 等. 高温后砂岩动力特性应变率效应的试验研究 [J]. 岩土力学, 2014, 35(12): 3479–3488. DOI: 1000-7598(2014)12-3479-10. LI Ming, MAO Xianbiao, CAO Lili, et al. Experimental study of mechanical properties on strain rate effect of sandstones after high temperature [J]. Rock and Soil Mechanics, 2014, 35(12): 3479–3488. DOI: 1000-7598(2014)12-3479-10.
[9]	陈腾飞, 许金余, 刘石, 等. 经历不同高温后砂岩的动态力学特性实验研究 [J]. 爆炸与冲击, 2014, 34(2): 195–201. DOI: 10.11883/1001-1455(2014)02-0195-07. CHEN Tengfei, XU Jinyu, LIU Shi, et al. Experimental study on dynamic mechanical properties of post-high-temperature sandstone [J]. Explosion and Shock Waves, 2014, 34(2): 195–201. DOI: 10.11883/1001-1455(2014)02-0195-07.
[10]	尹土兵, 李夕兵, 周子龙, 等. 粉砂岩高温后动态力学特性研究 [J]. 地下空间与工程学报, 2007, 3(6): 1060–1063. DOI: 1673-0836(2007)06-1060-04. YIN Tubing, LI Xibing, ZHOU Zilong, et al. Study on mechanical properties of post-high-temperature sandstone [J]. Chinese Journal of Underground Space and Engineering, 2007, 3(6): 1060–1063. DOI: 1673-0836(2007)06-1060-04.
[11]	尹土兵, 李夕兵, 王斌, 等. 高温后砂岩动态压缩条件下力学特性研究 [J]. 岩土工程学报, 2011, 33(5): 777–784. DOI: 1000-4548(2011)05-0777-08. YIN Tubing, LI Xibing, WANG Bin, et al. Mechanical properties of sandstones after high temperature under dynamic loading [J]. Chinese Journal of Geotechnical Engineering, 2011, 33(5): 777–784. DOI: 1000-4548(2011)05-0777-08.
[12]	刘石, 许金余. 高温作用对花岗岩动态压缩力学性能的影响研究 [J]. 振动与冲击, 2014, 33(4): 195–198. DOI: 10.3969/j.issn.1000-3835.2014.04.035. LIU Shi, XU Jinyu. Effect of high temperature on dynamic compressive mechanical properties of granite [J]. Journal of Vibration and Shock, 2014, 33(4): 195–198. DOI: 10.3969/j.issn.1000-3835.2014.04.035.
[13]	支乐鹏, 许金余, 刘志群, 等. 高温后花岗岩冲击破坏行为及波动特性研究 [J]. 岩石力学与工程学报, 2013, 32(1): 135–142. DOI: 10.3969/j.issn.1000-6915.2013.01.019. ZHI Lepeng, XU Jinyu, LIU Zhiqun, et al. Research on impacting failure behavior and fluctuation characteristics of granite exposed to high temperature [J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(1): 135–142. DOI: 10.3969/j.issn.1000-6915.2013.01.019.
[14]	卢志堂, 王志亮. 温度与冲击荷载耦合下花岗岩动力性质 [J]. 哈尔滨工业大学学报, 2016, 48(6): 143–149. DOI: 10.11918/j.issn.0367-6234.2016.06.023. LU Zhitang, WANG Zhiliang. Dynamic properties of granite subjected to coupling action of impact loading with actual temperature [J]. Journal of Harbin Institute of Technology, 2016, 48(6): 143–149. DOI: 10.11918/j.issn.0367-6234.2016.06.023.
[15]	黄真萍, 张义, 吴伟达. 遇水冷却的高温大理岩力学与波动特性分析 [J]. 岩土力学, 2016, 37(2): 367–375. DOI: 10.16285/j.rsm.2016.02.008. HUANG Zhenping, ZHANG Yi, WU Weida. Analysis of mechanical and wave properties of heat-treated marble by water cooling [J]. Rock and Soil Mechanics, 2016, 37(2): 367–375. DOI: 10.16285/j.rsm.2016.02.008.
[16]	黄真萍, 张义, 孙艳坤, 等. 高温遇水冷却石灰岩力学与声学性质研究 [J]. 中南大学学报(自然科学版), 2016(12): 4181–4189. DOI: 10.11817/j.issn.1672-7207.2016.12.029. HUANG Zhenping, ZHANG Yi, SUN Yankun, et al. Mechaniccal and acoustic characteristics of high temperature limestone with water cooling treatment [J]. Journal of Central South University (Science and Technology), 2016(12): 4181–4189. DOI: 10.11817/j.issn.1672-7207.2016.12.029.
[17]	郤保平, 赵阳升. 600 ℃内高温状态花岗岩遇水冷却后力学特性试验研究 [J]. 岩石力学与工程学报, 2010, 29(5): 892–899. XI Baoping, ZHAO Yangsheng. Experimental research on mechanical properties of tercooled granite under high temperatures within 600 ℃ [J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(5): 892–899.
[18]	朱振南, 田红, 董楠楠, 等. 高温花岗岩遇水冷却后物理力学特性试验研究 [J]. 岩土力学, 2018, 39(S2): 169–175. DOI: 10.16285/j.rsm.2018.0967. ZHU Zhennan, TIAN Hong, DONG Nannan, et al. Experimental study of physico-mechanical properties of heat-treated granite by water cooling [J]. Rock and Soil Mechanics, 2018, 39(S2): 169–175. DOI: 10.16285/j.rsm.2018.0967.
[19]	梁铭, 张绍和, 舒彪. 不同冷却方式对高温花岗岩巴西劈裂特性的影响 [J]. 水资源与水工程学报, 2018, 138(2): 189–196. DOI: cnki:sun:xbsz.0.2018-02-031. LIANG Ming, ZHANG Shaohe, SHU Biao. Effect of different cooling ways on Brazilian tension characteristics of heat-treated granite [J]. Journal of Water Resources & Water Engineering, 2018, 138(2): 189–196. DOI: cnki:sun:xbsz.0.2018-02-031.
[20]	翟越, 王思维, 石蕴美, 等. 高温-水冷却对混凝土抗冲击性能影响试验研究 [J]. 工业建筑, 2017, 47(7): 127–131. DOI: 10.13204/j.gyjz201707024. ZHAI Yue, WANG Siwei, SHI Yunmei, et al. Research on effects of high temperature cooling method on concrete impact-resistance properties [J]. Industrial Construction, 2017, 47(7): 127–131. DOI: 10.13204/j.gyjz201707024.
[21]	邓红卫, 刘传举, 柯波, 等. 循环动力扰动下花岗岩细观损伤特性试验研究[J]. 工程科学学报, 2017, 39(11): 31-36. DOI: cnki:sun:bjkd.0.2017-11-004 DENG Hongwei, LIU Chuanju, KE Bo, et al. Experimental study on microscopic damage characteristics of granite under cyclic dynamic disturbances[J]. Chinese Journal of Engineering, 2017, 39(11): 31-36. DOI: cnki:sun:bjkd.0.2017-11-004
[22]	孙中光, 姜德义, 谢凯楠, 等. 基于低场磁共振的北山花岗岩热损伤研究 [J/OL]. 煤炭学报. https://DOI.org/10.13225/j.cnki.jccs.2019.0164. SUN Zhongguang, JIANG Deyi, XIE Kainan, et al. Thermal damage study of Beishan granite based on low field magnetic resonance[J/OL]. Journal of China Coal Society. https://DOI.org/10.13225/j.cnki.jccs.2019.0164.
[23]	俞缙, 张欣, 蔡燕燕, 等. 水化学与冻融循环共同作用下砂岩细观损伤与力学性能劣化试验研究 [J]. 岩土力学, 2019, 40(2): 41–50. DOI: 10.16285/j.rsm.2017.1450. YU Jin, ZHANG Xin, CAI Yanyan, et al. Meso-damage and mechanical properties degradation of sandstone under combined effect of water chemical corrosion and freeze-thaw cycles [J]. Rock and Soil Mechanics, 2019, 40(2): 41–50. DOI: 10.16285/j.rsm.2017.1450.
[24]	席道瑛. 花岗石中矿物相变的物性特征 [J]. 矿物学报, 1994(3): 223–227. DOI: 10.3321/j.issn:1000-4734.1994.03.003. XI Daoying. Physical characteristics of mineral phase transition in the granite [J]. Acta Mineralogica Sinica, 1994(3): 223–227. DOI: 10.3321/j.issn:1000-4734.1994.03.003.
[25]	唐世斌, 罗江, 唐春安. 低温诱发岩石破裂的理论与数值模拟研究 [J]. 岩石力学与工程学报, 2018, 39(7): 1596–1607. DOI: 10.13722/j.cnki.jrme.2018.0027. TANG Shibin, LUO Jiang, TANG Chun’an. Theoretical and numerical study on the cryogenic fracturing in rock [J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 39(7): 1596–1607. DOI: 10.13722/j.cnki.jrme.2018.0027.