力热耦合作用下煤岩损伤的能量特征

doi:10.16265/j.cnki.issn1003-3033.2019.12.015

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (12): 91-96.doi: 10.16265/j.cnki.issn1003-3033.2019.12.015

力热耦合作用下煤岩损伤的能量特征

李波波^1,2,3 副教授, 张尧¹, 任崇鸿¹, 杨康¹, 李建华¹, 许江⁴ 教授

1 贵州大学矿业学院,贵州贵阳 550025;
2 贵州大学喀斯特山区优势矿产资源高效利用国家地方联合工程实验室,贵州贵阳 550025;
3 山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛 266590;
4 重庆大学煤矿灾害动力学与控制国家重点实验室,重庆 400044

收稿日期:2019-09-11 修回日期:2019-11-01 出版日期:2019-12-28 发布日期:2020-11-24
作者简介:李波波 (1985—),男,贵州修文人,博士,副教授,主要从事岩石力学与工程、矿井灾害防治等方面的研究。E-mail: bbli@gzu.edu.cn。
基金资助:
国家自然科学基金资助(51804085,51911530203);贵州省科技计划资助项目(黔科合平台人才[2018]5781号)。

Energy characteristics of coal or rock damage under thermo-mechanical coupling effect

LI Bobo^1,2,3, ZHANG Yao¹, REN Chonghong¹, YANG Kang¹, LI Jianhua¹, XU Jiang⁴

1 College of Mining,Guizhou University,Guiyang Guizhou 550025,China;
2 National Local Joint Engineering Laboratory for Efficient Utilization of Dominant Mineral Resources in Karst Mountain Area,Guizhou University,Guiyang Guizhou 550025,China;
3 Ministry of Mine Disaster Prevention and Control to Build a National Key Laboratory Cultivation Base,Shandong University of Science and Technology,Qingdao Shandong 266590,China;
4 State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China

Received:2019-09-11 Revised:2019-11-01 Online:2019-12-28 Published:2020-11-24

摘要/Abstract

摘要： 为有效预防煤岩动力灾害发生,利用含瓦斯煤热-流-固耦合三轴伺服渗流试验装置,开展不同温度下三轴压缩试验。基于统计损伤力学理论,得到温度荷载下煤岩的整体损伤演化方程,推导煤岩变形破坏过程中的能量数学表达式,并通过引入耗散能系数,提出力热耦合下煤岩破坏点的确定方法。研究结果表明:不同温度下煤岩变形破坏过程的阶段特征基本相似,对应煤岩不同的变形破坏阶段,能量演化特征呈现阶段性变化;总能量的分配在变形破坏过程中基本不受温度的影响,不同温度下弹性能占比和耗散能占比的演化规律具有较大的相似性;能量的耗散是造成煤岩内部结构产生损伤的主要原因,伴随着能量不断耗散煤岩的整体损伤变量总体上呈幂函数增长。

关键词: 煤岩损伤, 荷载, 耗散能, 孔裂隙, 力热耦合

Abstract: In order to prevent coal dynamic disasters effectively, the triaxial compression test at different temperatures was carried out by using the triaxial servo-controlled seepage equipment for thermal-hydro- mechanical coupling of coal containing methane. Based on the theory of statistical damage mechanics, the overall damage evolution equation of coal under temperature load was put forward, and the mathematical expression of energy in the process of deformation and failure of coal was deducd. The method to determine the failure point of coal under stress and temperature coupling condition was put forward by introducing the dissipation energy coefficient ω. The experimental results show that the stage characteristics of deformation and failure process of coal are basically similar at different temperatures, that corresponding to different deformation and failure stages, the energy evolution characteristics of coal show periodic changes, that the distribution of total energy is basically not affected by temperature in the process of deformation and failure, and evolution laws of elastic energy ratio and dissipated energy ratio at different temperatures have a great similarity, and that the energy dissipation is the main cause of the internal structure damage of coal, and the overall damage variable of coal increases in a power function with the constant dissipation of energy.

Key words: coal or rock damage, load, dissipated energy, pore-fracture, thermo-mechanical coupling

中图分类号:

X936

李波波, 张尧, 任崇鸿, 杨康, 李建华, 许江. 力热耦合作用下煤岩损伤的能量特征[J]. 中国安全科学学报, 2019, 29(12): 91-96.

LI Bobo, ZHANG Yao, REN Chonghong, YANG Kang, LI Jianhua, XU Jiang. Energy characteristics of coal or rock damage under thermo-mechanical coupling effect[J]. China Safety Science Journal, 2019, 29(12): 91-96.

参考文献

[1] 赵忠虎, 谢和平. 岩石变形破坏过程中的能量传递和耗散研究[J]. 四川大学学报:工程科学版, 2008, 40(2): 26-31.
ZHAO Zhonghu, XIE Heping. Energy transfer and energy dissipation in rock deformation and fracture[J]. Journal of Sichuan University:Engineering Science Edition, 2008, 40(2): 26-31.
[2] 马德鹏, 周岩, 刘传孝, 等. 不同卸围压速率下煤样卸荷破坏能量演化特征[J]. 岩土力学, 2019, 40(7): 1-8.
MA Depeng, ZHOU Yan, LIU Chuanxiao, et al. Characteristics of energy evolution of coal sample failure under triaxial unloading tests of different unloading confining pressure rate[J]. Rock and Soil Mechanics, 2019, 40(7): 1-8.
[3] 戴兵, 赵国彦, 杨晨, 等. 不同应力路径下岩石峰前卸荷破坏能量特征分析[J]. 采矿与安全工程学报, 2016, 33(2): 367-374.
DAI Bing, ZHAO Guoyan, YANG Chen, et al. Energy evolution law of rocks in process of unloading failure under different paths[J]. Ournal of Mining & Safety Engineering, 2016, 33(2): 367-374.
[4] 汪泓, 杨天鸿, 刘洪磊, 等. 循环荷载下干燥与饱和砂岩力学特性及能量演化[J]. 岩土力学, 2017, 38(6): 1 600-1 608.
WANG Hong, YANG Tianhong, LIU Honglei, et al. Mechanical properties and energy evolution of dry and saturated sandstones under cyclic loading[J]. Rock and Soil Mechanics, 2017, 38(6): 1 600-1 608.
[5] LI Diyuan, SUN Zhi, XIE Tao, et al. Energy evolution characteristics of hard rock during triaxial failure with different loading and unloading paths[J]. Engineering Geology, 2017, 228: 270-281.
[6] 陈鲜展, 袁亮, 薛生, 等. 瓦斯含量法在煤与瓦斯突出能量分析中的应用[J]. 中国安全科学学报, 2017, 27(10): 93-98.
CHEN Xianzhan, YUAN Liang, XUE Sheng, etal. Energy analysis of coal and gas outburst process based on gas content method[J]. China Safety Science Journal, 2017, 27(10): 93-98.
[7] XUE Yi, GAO Feng, TENG Teng, et al. Effect of gas pressure on rock burst proneness indexes and energy dissipation of coal samples[J]. Geotechnical and Geological Engineering, 2016, 34(6): 1 737-1 748.
[8] XU Xiaoli, KARAKUS M, GAO Feng, et al. Thermal damage constitutive model for rock considering damage threshold and residual strength[J]. Journal of Central South University, 2018, 25(10): 2 523-2 536.
[9] XU Xiaoli, GAO Feng, ZHANG Zhizhen. Thermo-mechanical coupling damage constitutive model of rock based on the Hoek-Brown strength criterion[J]. International Journal of Damage Mechanics, 2018, 27(8): 1 213-1 230.
[10] 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.
[11] LIU Shi, XU Jinyu. Analysis on damage mechanical characteristics of marble exposed to high temperature[J]. International Journal of Damage Mechanics, 2015, 24(8): 1 180-1 193.
[12] 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): 1 729-1 740.
XIE Heping, JU Yang, LI Liyun, et al. Energy mechanism of deformation and failure of rocks masses[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(9): 1 729-1 740.
[13] 许江, 彭守建, 尹光志, 等. 含瓦斯煤热流固耦合三轴伺服渗流装置的研制及应用[J]. 岩石力学与工程学报, 2010, 29(5): 907-914.
XU Jiang, PENG Shoujian, YIN Guangzhi, et al. Development and application of triaxial servo-controlled seepage equipment for thermo-fluid-solid coupling of coal containing methane[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(5): 907-914.

[1]	辛保泉, 党文义, 喻健良, 王溪舸, 闫兴清, 卢卫. 石化过程蒸气云爆炸抗爆设防荷载定量评估方法^*[J]. 中国安全科学学报, 2021, 31(9): 113-118.
[2]	李波波, 吴学海, 任崇鸿, 许江, 张尧, 高政. 瓦斯气体劣化-荷载作用下煤岩损伤本构模型^*[J]. 中国安全科学学报, 2021, 31(7): 76-81.
[3]	蔡炯炜, 杨石刚, 孙文盛, 杨亚, 王健. 长直空间内可燃气体爆炸灾害效应研究进展[J]. 中国安全科学学报, 2021, 31(4): 133-140.
[4]	王建民. 公路桥梁结构运营荷载下安全状态评价方法[J]. 中国安全科学学报, 2020, 30(7): 48-54.
[5]	张尧, 李波波, 任崇鸿, 许江, 李建华. 循环荷载下煤岩弹塑性损伤的能量机制分析[J]. 中国安全科学学报, 2020, 30(5): 88-94.
[6]	王春霞, 张学博, 卢方超. 基于核磁共振与应力分析的液氮冷浸致裂煤岩研究[J]. 中国安全科学学报, 2019, 29(11): 156-163.
[7]	李波波, 张尧, 任崇鸿, 杨康, 李建华, 许江. 三轴应力下煤岩损伤-能量演化特征研究[J]. 中国安全科学学报, 2019, 29(10): 98-104.
[8]	骆吉庆, 姚安林, 何莎, 周雪, 王小梅, 刘易思. 浅海输气管道坠物碰撞动力响应分析[J]. 中国安全科学学报, 2018, 28(6): 103-109.
[9]	王智德, 马祖遥. 爆破荷载作用下顺层岩质边坡的损伤特性研究[J]. 中国安全科学学报, 2018, 28(11): 72-79.
[10]	李玉飞, 叶义成, 刘晓云, 胡南燕, 罗斌玉, 元宙昊. 机械施工荷载作用下采空区顶板稳定性研究[J]. 中国安全科学学报, 2017, 27(7): 133-138.
[11]	王超 , 闫玮烁, 韩君格. 爆炸荷载统计模型下重力坝动力响应随机分析[J]. 中国安全科学学报, 2017, 27(6): 85-90.
[12]	李波波, 杨康, 徐鹏, 许江, 张敏. 力热耦合条件下煤岩渗透率模型研究[J]. 中国安全科学学报, 2017, 27(6): 139-144.
[13]	黄丽蒂，刘德明，郝进锋，张天宇. 基于人体安全的栏杆设计荷载试验研究[J]. 中国安全科学学报, 2013, 23(3): 22-.
[14]	陈光辉，李夕兵，董陇军，李地元，刘新颖. 排土场与爆破荷载共同作用下的露天矿边坡稳定性分析[J]. 中国安全科学学报, 2012, 22(5): 113-.
[15]	柳皎，李夕兵，董陇军. 地震荷载下露天坑边坡模糊随机可靠度分析[J]. 中国安全科学学报, 2012, 22(3): 35-.

力热耦合作用下煤岩损伤的能量特征

Energy characteristics of coal or rock damage under thermo-mechanical coupling effect

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价