考虑时效损伤的硬岩非线性蠕变本构模型研究

doi:10.13722/j.cnki.jrme.2023.1033

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摘要为探究硬岩蠕变全过程中各阶段的变形特征，对硬质凝灰岩开展恒围压、分级升轴压的室内蠕变试验。通过不同应力路径下硬岩蠕变特征分析，结合扫描电镜(SEM)测试探讨岩石细观损伤演化机制与宏观破坏特征之间的关系；基于蠕变过程中岩石力学性能随时间的劣化效应，引入损伤变量构建能描述硬岩蠕变全过程的损伤本构模型；引入优化的BP神经网络模型，改善模型参数的识别与预测效果。研究结果表明：随偏应力水平提高，硬质凝灰岩表现出较为明显的脆–延性变形转化特征，且岩石蠕变现象更加明显；在较高偏应力持续作用下，岩石损伤累积与力学性能劣化更加充分，进而引起破坏阶段硬质凝灰岩的加速蠕变特征随围压增加而突显，硬岩破坏变得更加剧烈。改进后的损伤本构模型与Burgers模型相比能更好地描述硬岩蠕变全过程，基于优化后的BP神经网络模型，能准确预测高应力水平下硬岩的加速蠕变曲线，提高了模型的适用性。研究成果不仅丰富了硬岩蠕变本构模型的理论研究，还可为硬岩地层中工程岩体长期稳定性设计提供理论支持。

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	宋战平1
	2
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	王博文1
	2
	范胜元1
	2
	张宇涛1
	2
	王军保1
	2
	3

关键词 ：岩石力学, 硬质岩, 损伤蠕变, 本构模型, 参数拟合

Abstract：In order to investigate the deformation characteristics of hard rock during the whole creep process，this study carried out indoor creep tests on hard tuff with constant peripheral pressure and graded ascending axial pressure. Through the characterization of hard rock creep under different stress paths，combined with scanning electron microscope(SEM) tests，the relationship between the fine-scale damage evolution mechanism and macroscopic damage characteristics was explored. Based on the introduction of damage variables into the deterioration effect of rock mechanical properties over time during the creep process，an intrinsic model of damage creep was constructed that can describe the whole process of hard rock creep. At the same time，by optimising the BP neural network model，the identification and prediction of the model parameters were improved. The results show that，with increasing the bias stress level，the hard tuff shows more obvious brittle-ductile deformation transformation characteristics，and the rock creep phenomenon is more obvious. Under the continuous action of a higher bias stress，the accumulation of rock damage and the deterioration of mechanical properties are more adequate，which leads to the accelerated creep characteristics of the hard tuff during the damage stage with increasing the peripheral pressure，and the damage of the hard rock becomes more intense. Compared with Burgers，the improved damage constitutive model can better describe the whole process of hard rock creep，which verifies the reasonableness of the model. Based on the optimised BP neural network model，the accelerated creep curve of hard rock under high stress level can be accurately predicted，which improves the applicability of the model. The results of this study not only enrich the theoretical study of hard rock creep constitutive model，but also provide theoretical guidance for the design of long-term stability of engineering rock bodies in hard rock formations.

Key words： rock mechanics hard rock damage creep constitutive model parameter fitting

引用本文:

宋战平1，2，3，王博文1，2，范胜元1，2，张宇涛1，2，王军保1，2，3. 考虑时效损伤的硬岩非线性蠕变本构模型研究[J]. 岩石力学与工程学报, 2024, 43(10): 2368-2380.
SONG Zhanping1，2，3，WANG Bowen1，2，FAN Shengyuan1，2，ZHANG Yutao1，2，WANG Junbao1，2，3. Nonlinear creep intrinsic modeling of hard rock considering aging damage. , 2024, 43(10): 2368-2380.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2023.1033 或 https://rockmech.whrsm.ac.cn/CN/Y2024/V43/I10/2368

[1]	孙钧. 岩石流变力学及其工程应用研究的若干进展[J]. 岩石力学与工程学报，2007，26(6)：1 081-1 106.(SUN Jun. Some advances in rock rheological mechanics and its engineering applications[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：1 081-1 106.(in Chinese))
[2]	宋战平，程昀，杨腾添，等. 渗透压作用对灰岩孔隙结构演化规律影响的试验研究[J]. 岩土力学，2019，40(12)：4 607-4 619. (SONG Zhanping，CHENG Yun，YANG Tengtian，et al. Experimental study on the influence of osmotic pressure on the evolution of pore structure of limestone[J]. Rock and Soil Mechanics，2019，40(12)：4 607-4 619.(in Chinese))
[3]	张强勇，向文，江力宇，等. 片麻状花岗岩热黏弹塑性损伤蠕变模型及应用研究[J]. 土木工程学报，2017，50(8)：88-97.(ZHANG Qiangyong，XIANG Wen，JIANG Liyu，et al. Creep model and application of thermoviscoelastic-plastic damage of gneiss-like granite[J]. China Civil Engineering Journal，2017，50(8)：88-97.(in Chinese))
[4]	宋战平，王加辉，潘红伟，等. 考虑渗透压力作用的岩石单轴压缩损伤模型构建及试验验证[J]. 煤田地质与勘探，2023，51(5)：78-87.(SONG Zhanping，WANG Jiahui，PAN Hongwei，et al. Construction and experimental verification of rock uniaxial compression damage model considering osmotic pressure[J]. Coal Geology and Exploration，2023，51(5)：78-87.(in Chinese))
[5]	MARANINI E，BRIGNOLI M. Creep behavior of a weak rock：experimental characterization[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(1)：127-138.
[6]	MALAN D F. Manuel Rocha medal recipient simulating the time dependent behaviour of excavations in hard rock[J]. Rock Mechanics and Rock Engineering，2002，35(4)：225-254.
[7]	曹树刚，边金，李鹏. 岩石蠕变本构关系及改进的西原正夫模型[J]. 岩石力学与工程学报，2002，21(5)：632-634.(CAO Shugang，BIAN Jin，LI Peng. Ontological relationship of rock creep and improved Nishihara Masao model[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(5)：632-634.(in Chinese))
[8]	黄书岭. 高应力下脆性岩石的力学模型与工程应用研究[博士学位论文][D]. 武汉：中国科学院武汉岩土力学研究所，2008.(HUANG Shuling. Research on mechanical model and engineering application of brittle rock under high stress[Ph. D. Thesis][D]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2008.(in Chinese))
[9]	辛亚军，安定超，李梦远，等. 高强度红砂岩峰后分级加载蠕变及强度特征[J]. 煤炭学报，2017，42(7)：1 714-1 723.(XIN Yajun，AN Dingchao，LI Mengyuan，et al. Post-peak graded loading creep and strength characteristics of high-strength red sandstone[J]. Journal of China Coal Society，2017，42(7)：1 714-1 723.(in Chinese))
[10]	LI Y S，XIA C C. Time-dependent tests on intact rocks in uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(3)：467-475.
[11]	王军保，刘新荣，郭建强，等. 盐岩蠕变特性及其非线性本构模型[J]. 煤炭学报，2014，39(3)：445-451.(WANG Junbao，LIU Xinrong，GUO Jianqiang，et al. Creep properties of salt rocks and its nonlinear intrinsic model[J]. Journal of China Coal Society，2014，39(3)：445-451.(in Chinese))
[12]	童立红，吴琳琳，徐长节. 基于Maxwell分布的砂岩本构模型研究[J]. 铁道科学与工程学报，2022，19(4)：958-965.(TONG Lihong，WU Linlin，XU Changjie. Study on sandstone constitutive model based on maxwell distribution[J]. Journal of Railway Science and Engineering，2022，19(4)：958-965.(in Chinese))
[13]	韩伟民，闫怡飞，闫相祯. 基于广义Kelvin模型的非定常盐岩蠕变模型[J]. 中南大学学报：自然科学版，2020，51(5)：1 337-1 349. (HAN Weimin，YAN Yifei，YAN Xiangzhen. Creep model of unsteady salt rock based on generalized Kelvin model[J]. Journal of Central South University：Natural Science，2020，51(5)：1 337-1 349.(in Chinese))
[14]	刘伟. 改进的非定常Bingham岩石蠕变模型及参数辨识[J]. 力学季刊，2022，43(3)：651-658.(LIU Wei. Improved creep model and parameter identification of unsteady Bingham rock[J]. Mechanics Quarterly，2022，43(3)：651-658.(in Chinese))
[15]	CHENG L，LIU J F，REN Y，et al. Study on long-term uniaxial compression creep mechanical behavior of rocksalt-mudstone combined body[J]. International Journal of Damage Mechanics，2022，31(2)：275-293.
[16]	孙晓明，缪澄宇，姜铭，等. 基于改进西原模型的不同含水率砂岩蠕变实验及理论研究[J]. 岩石力学与工程学报，2021，40(12)：2 411-2 420.(SUN Xiaoming，MIAO Chengyu，JIANG Ming，et al. Experimental and theoretical study on creep of sandstone with different moisture cutness based on improved Nishihara model[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(12)：2 411-2 420.(in Chinese))
[17]	杨春和，陈锋，曾义金. 盐岩蠕变损伤关系研究[J]. 岩石力学与工程学报，2002，21(11)：1 602-1 604.(YANG Chunhe，CHEN Feng，ZENG Yijin. Investigation on creep damage constitutive theory of salt rock[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(11)：1 602-1 604.(in Chinese))
[18]	齐亚静，姜清辉，王志俭，等. 改进西原模型的三维蠕变本构方程及其参数辨识[J]. 岩石力学与工程学报，2012，31(2)：347-355.(QI Yajing，JIANG Qinghui，WANG Zhijian，et al. Improvement of three-dimensional creep constitutive equation of Nishihara model and its parameter identification[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(2)：347-355.(in Chinese))
[19]	张嘎，王刚，尹振宇，等. 土的基本特性及本构关系[J]. 土木工程学报，2020，53(2)：105-118.(ZHANG Ga，WANG Gang，YIN Zhenyu，et al. Basic characteristics and constitutive relationship of soil[J]. China Civil Engineering Journal，2020，53(2)：105-118.(in Chinese))
[20]	杨更社，谢定义，张长庆，等. 岩石单轴受力CT识别损伤本构关系的探讨[J]. 岩土力学，1997，18(2)：29-34.(YANG Gengshe，XIE Dingyi，ZHANG Changqing，et al. Discussion on the damage constitutive relationship identified by CT of uniaxial force on rock[J]. Soil and Rock Engineering，1997，18(2)：29-34.(in Chinese))
[21]	凌建明，孙钧. 脆性岩石的细观裂纹损伤及其时效特征[J]. 岩石力学与工程学报，1993，12(4)：304-312.(LING Jianming，SUN Jun. Fine-scale crack damage in brittle rocks and its aging characteristics[J]. Journal of Rock Mechanics and Engineering，1993，12(4)：304-312.(in Chinese))
[22]	张子麟，曹嫣镔，翟明洋，等. 硬岩脆性损伤声发射特征及蠕变破坏机制研究[J]. 矿业工程，2022，20(3)：13-17.(ZHANG Zilin，CAO Yanbin，ZHAI Mingyang，et al. Study on acoustic emission characteristics and creep damage mechanism of brittle damage in hard rock[J]. Mining Engineering，2022，20(3)：13-17.(in Chinese))
[23]	FAN S Y，SONG Z P，WANG H Z，et al. Influence of the combined action of water and axial pressure on the microscopic damage and mechanical properties of limestone[J]. Geoenergy Science and Engineering，2023，228：212027.
[24]	宋战平，程昀，杨腾添，等. 循环荷载下硬质层理砂岩疲劳损伤机制试验研究[J]. 岩土工程学报，2024，46(3)：490-499.(SONG Zhanping，CHENG Yun，YANG Tengtian，et al. Experimental study on fatigue damage mechanism of hard laminated sandstone under cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2024，46(3)：490-499.(in Chinese))
[25]	曹文贵，赵衡，张玲，等. 考虑损伤阀值影响的岩石损伤统计软化本构模型及其参数确定方法[J]. 岩石力学与工程学报，2008，27(6)：1 148-1 154.(CAO Wengui，ZHAO Heng，ZHANG Ling，et al. Statistical softening constitutive model of rock damage considering the effect of damage threshold and its parameter determination method[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(6)：1 148-1 154.(in Chinese))
[26]	张超，俞缙，白允，等. 基于强度理论的岩石脆延转化统计损伤本构模型[J]. 岩石力学与工程学报，2023，42(2)：307-316.(ZHANG Chao，YU Jin，BAI Yun，et al. Statistical damage constitutive model for brittle-delay transformation of rocks based on strength theory[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(2)：307-316.(in Chinese))
[27]	宋战平，程昀，杨腾添，等. 渗透-应力耦合作用下灰岩压缩破坏及声发射特性分析[J]. 煤炭学报，2019，44(9)：2 751-2 759. (SONG Zhanping，CHENG Yun，YANG Tengtian，et al. Analysis of compression failure and acoustic emission characteristics of limestone under permeation-stress coupling[J]. Journal of China Coal Society，2019，44(9)：2 751-2 759.(in Chinese))
[28]	杨珂，韩超，刘校麟. 分级加卸载下砂岩蠕变试验及模型研究[J]. 长江科学院院报，2021，38(3)：97-102.(YANG Ke，HAN Chao，LIU Xiaolin. Experimental and modeling studies on creep of sandstone under graded unloading[J]. Journal of the Changjiang Academy of Sciences，2021，38(3)：97-102.(in Chinese))
[29]	中华人民共和国行业标准编写组. MT 225—1990 单向压缩条件下煤和岩石蠕变性测定方法[S]. [S. l.]：[s. n.]，1990.(The Professional Standards Compilation Group of People?s Republic of China. MT 225—1990 Method for determining creep of coal and rock under unidirectional compression[S]. [S. l.]：[s. n.]，1990.(in Chinese))
[30]	陈有亮，肖鹏，杜曦，等. 岩石黏弹塑性损伤蠕变模型及全过程研究[J]. 应用力学学报，2024，待刊.(CHEN Youliang，XIAO Peng，DU Xi，et al. A viscoelastic plastic damage creep model and whole process study of rock[J]. Chinese Journal of Applied Mechanics，2024，to be pressed.(in Chinese))
[31]	张亮亮，王晓健. 岩石黏弹塑性损伤蠕变模型研究[J]. 岩土工程学报，2020，42(6)：1 085-1 092.(ZHANG Liangliang，WANG Xiaojian. Research on the viscoelastic plastic damage creep model of rock[J]. Chinese Journal of Geotechnical Engineering，2020，42(6)：1 085-1 092.(in Chinese))
[32]	谢红强，何江达，徐进. 岩石加卸载变形特性及力学参数试验研究[J]. 岩土工程学报，2003，25(3)：336-338.(XIE Hongqiang，HE Jiangda，XU Jin. Experimental study on deformation characteristics and mechanical parameters of rock unloading and loading[J]. Chinese Journal of Geotechnical Engineering，2003，25(3)：336-338.(in Chinese))
[33]	高文华，陈秋南，黄自永，等. 考虑流变参数弱化综合影响的软岩蠕变损伤本构模型及其参数智能辨识[J]. 土木工程学报，2012，45(2)：104-110.(GAO Wenhua，CHEN Qiunan，HUANG Ziyong，et al. Creep damage constitutive model of soft rock considering the comprehensive influence of rheological parameter weakening and intelligent identification of its parameters[J]. China Civil Engineering Journal，2012，45(2)：104-110.(in Chinese))
[34]	SONG Z P.，YANG Z F，HUO R K，et al. Inversion analysis method for tunnel and underground space engineering：a short review[J]. Applied Sciences，2023，13(9)：5 454.