基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应

张村; 方尚鑫; 贾胜; 王永乐; 王方田; 白庆升

doi:10.19606/j.cnki.jmst.2024.03.010

基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应

doi: 10.19606/j.cnki.jmst.2024.03.010

张村^{1, 2,},
方尚鑫¹,
贾胜¹,
王永乐¹,
王方田³,
白庆升⁴

1.
中国矿业大学(北京)共伴生能源精准开采北京市重点实验室，北京 100083
2.
中国矿业大学(北京)厚煤层绿色智能开采教育部工程研究中心，北京 100083
3.
中国矿业大学矿业工程学院，江苏徐州 221116
4.
中国地质大学(北京)地质安全研究院，北京 100083

基金项目:

国家重点研发计划 2023YFC3012101

国家自然科学基金 52104155

中国博士后基金 2023M733778

详细信息

作者简介:
张村(1990—)，男，江苏海门人，博士，副教授，博士生导师，主要从事煤矿开采与矿井水资源利用方面的教学与科研工作。Tel：15810194127，E-mail：cumt-zc@cumtb.edu.cn

中图分类号: TD315
计量
- 文章访问数: 104
- HTML全文浏览量: 8
- PDF下载量: 35
- 被引次数: 0
出版历程
- 收稿日期: 2024-01-11
- 修回日期: 2024-02-24
- 刊出日期: 2024-06-30

Damage evolution characteristics of 3D-reconstructed coal during loading and its size effects based on CT scanning

1.
Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083, China
2.
Engineering Research Center of Green and Intelligent Mining for Thick Coal Seam, Ministry of Education, China University of Mining and Technology-Beijing, Beijing 100083, China
3.
School of Mines, China University of Mining and Technology, Xuzhou Jiangsu 221116, China
4.
Institute of Geosafety, China University of Geosciences, Beijing 100083, China

摘要

摘要:
煤体是一种包含孔隙结构和矿物成分的多孔材料，具有明显的各向异性和尺寸效应。为研究煤体各向异性及尺寸效应对破坏特征的影响，本文提出了一种基于CT扫描、核磁共振和X衍射等技术手段的煤样内部孔隙、矿物成分表征和三维重构模拟方法。在此基础上，反演实验室单轴压缩获得了三维重构模型煤基质和矿物成分的模拟参数，进一步模拟分析了不同宽高比煤体的强度损伤特征。模拟结果表明：①在加载过程中，塑性区首先在孔隙和矿物成分周边逐渐向外扩展连通。在空间分布上，塑性区前期由加载端垂直向内部扩展，后期转变为由四周水平向内部扩展，最终模型破坏的非塑性区形成“双圆台结构体”。②随着宽高比的增加，煤样的抗压强度(p)、达到屈服强度时的应变(ζ)以及弹性模量(K)均会增加，其中ζ和K呈线性增加，而p增幅逐渐减小。③在煤样单轴加载过程中总能量和弹性能呈指数增加，耗散能呈线性增加。随着宽高比增加，煤体内积聚的弹性能增加，破坏时释放的能量增大，更容易诱发动力冲击相关灾害。研究结果为冲击矿压地区区段煤柱尺寸的合理选择提供参考。
- CT扫描 /
- 三维重构 /
- 孔隙结构 /
- 矿物成分 /
- 尺寸效应
Abstract:
Coal is a porous material containing pore structures and mineral components, exhibiting pronounced anisotropy and size effects.In order to investigate the influence of coal anisotropy and size effects on its failure characteristics, this paper proposes a simulation method for characterizing and reconstructing three-dimensionally the internal pores and mineral components of coal samples based on CT scanning, nuclear magnetic resonance, and X-ray diffraction.Specifically, we obtained simulation parameters of three-dimensional reconstruction models of coal matrix and mineral components through inverse laboratory uniaxial compression experiments, while simulated and analyzed the strength damage characteristics of coal bodies with different aspect ratios.The simulation results show that: ① During the loading process, the plastic zone first gradually expands and connects outward around the pores and mineral components.In terms of spatial distribution, the plastic zone expands vertically from the loading end to the interior in the early stage, and in the later stage, it expands horizontally from the surroundings to the interior.After the model is damaged, a "double truncated cone structure" is formed in the non-plastic zone.② The increase of aspect ratio leads to an increase in the compressive strength(p) of coal samples, the strain(ζ) at yielding strength, and the elastic modulus(K), among which ζ and K increase linearly, while the margin of increase in p gradually decreases.③ The total energy and elastic energy of coal sample loading increase exponentially, while the dissipated energy increases linearly.The increase of aspect ratio leads to an increase both in the accumulated elastic energy in the coal body and in the released energy during failure, which easily induce dynamic impact-related disasters.This study provide references for the reasonable selection of coal pillar size in impact mine pressure area.
- CT scan /
- three-dimensional reconstruction /
- pore structure /
- mineral composition /
- size effect

HTML全文

图 1 402工作面动力显现区域

Figure 1. Dynamic display area of 402 working face

下载: 全尺寸图片幻灯片

图 2 煤样中矿物包裹体、孔裂隙和煤基质的分布

C—煤基质；F—连通性裂隙；M—矿物包裹体；P—孤立孔

Figure 2. Distribution of mineral inclusions, pore fissures and coal matrix in coal samples

下载: 全尺寸图片幻灯片

图 3 对灰色图片进行预处理

Figure 3. Preprocessing gray images

下载: 全尺寸图片幻灯片

图 4 三维重构时阈值分割原理

Figure 4. Threshold segmentation principle during 3D reconstruction

下载: 全尺寸图片幻灯片

图 5 三维数值模型重构与网格划分

Figure 5. 3D numerical model reconstruction and mesh generation

下载: 全尺寸图片幻灯片

图 6 实验室试验与数值模拟比较

Figure 6. Comparison between laboratory test and numerical simulation

下载: 全尺寸图片幻灯片

图 7 煤体三维数值模型

Figure 7. 3D numerical model coal sample

下载: 全尺寸图片幻灯片

图 8 加载过程中3号模型内部塑性区变化情况

Figure 8. Changes of the plastic zone inside model No.3 during loading

下载: 全尺寸图片幻灯片

图 9 煤样破坏后的形态

Figure 9. Morphology of coal sample after failure

下载: 全尺寸图片幻灯片

图 10 加载过程中矿物对塑性区的影响

Figure 10. Influence of minerals on plastic zone during loading

下载: 全尺寸图片幻灯片

图 11 含石英碎片电子探针图像^[30]

Figure 11. Electron probe image containing quartz fragments ^[30]

下载: 全尺寸图片幻灯片

图 12 不同宽高比模型应力应变曲线

Figure 12. Stress-strain curves of models with different aspect ratios

下载: 全尺寸图片幻灯片

图 13 不同宽高比岩体最大抗压强度

Figure 13. Maximum compressive strength of rock mass with different aspect ratios

下载: 全尺寸图片幻灯片

图 14 不同宽高比岩体弹性模量

Figure 14. Elastic modulus of rock mass with different aspect ratios

下载: 全尺寸图片幻灯片

图 15 不同宽高比煤样屈服强度时的应变

Figure 15. Strain at yield strength of coal samples with different aspect ratios

下载: 全尺寸图片幻灯片

图 16 煤岩体能量关系

Figure 16. Energy relationship between coal and rock mass

下载: 全尺寸图片幻灯片

图 17 不同宽高比煤样能量演化特征

Figure 17. Energy evolution characteristics of coal samples with different aspect ratios

下载: 全尺寸图片幻灯片

图 18 不同宽高比煤样峰值应力时能量演化规律

Figure 18. Energy evolution patterns of coal samples with different aspect ratios under peak stress

下载: 全尺寸图片幻灯片

图 19 不同宽高比煤样孔隙含量和耗散能关系

Figure 19. Relationship between pore content and dissipated energy in coal samples with different aspect ratios

下载: 全尺寸图片幻灯片

表 1 模型相关参数

Table 1. Model parameters

编号	1	2	3	4	5	6	7	8	9
节点数	41 733	67 571	84 897	77 489	141 203	122 103	144 415	302 702	378 112
单元数	123 264	201 239	253 548	230 412	424 217	364 658	433 802	909 224	1 137 998
底边长/像素	60	80	100	120	140	160	200	250	300
宽高比	0.6∶1.0	0.8∶1.0	1.0∶1.0	1.2∶1.0	1.4∶1.0	1.6∶1.0	2.0∶1.0	2.5∶1.0	3.0∶1.0
模型

下载: 导出CSV

表 2 矿物包裹体与煤基质压痕硬度

Table 2. Indentation hardness of mineral inclusions and coal matrix

成分	压痕硬度/(kg·mm^-2)					平均值/(kg·mm^-2)
矿物包裹体	135.8	120.9	70.2	205.6	89.2	124.34
煤基质	39.2	34.8	33.7	38.5	36.9	36.62

下载: 导出CSV

表 3 数值模拟模型参数

Table 3. Parameters of numerical simulation model

物理性质	体积模量/GPa	剪切模量/GPa	内聚力/MPa		内摩擦角/(°)		抗拉强度/MPa
物理性质	体积模量/GPa	剪切模量/GPa	破坏前	破坏后	破坏前	破坏后	抗拉强度/MPa
煤基质	0.95	0.275	5.1	0.52	40	35	1
矿物包裹体	14.7	11	12.85	—	40.6	—	1.5

下载: 导出CSV

表 4 不同宽高比煤样力学参数

Table 4. Mechanical parameters of coal samples with different aspect ratios

编号	1号	2号	3号	4号	5号	6号	7号	8号	9号
p/MPa	14.7	16.7	17.5	19.1	19.1	19.8	21.7	22.4	24.2
ζ/%	1.17	1.25	1.26	1.28	1.32	1.31	1.32	1.38	1.39
K/GPa	1.50	1.58	1.65	1.67	1.68	1.78	1.87	1.93	1.99

下载: 导出CSV

参考文献(34)

[1]	SONG H, JIANG Y, ELSWORTH D, et al. Scale effects and strength anisotropy in coal[J]. International Journal of Coal Geology, 2018, 195: 37-46. doi: 10.1016/j.coal.2018.05.006
[2]	刘彦飞, 汤达祯, 许浩, 等. 基于核磁共振的煤岩孔裂隙应力变形特征[J]. 煤炭学报, 2015, 40(6): 1415-1421. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201506030.htm LIU Yanfei, TANG Dazhen, XU Hao, et al. Characteristics of the stress deformation of pore-fracture in coal based on nuclear magnetic resonance[J]. Journal of China Coal Society, 2015, 40(6): 1415-1421. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201506030.htm
[3]	宫伟力, 李晨. 煤岩结构多尺度各向异性特征的SEM图像分析[J]. 岩石力学与工程学报, 2010, 29(S1): 2681-2689. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2010S1018.htm GONG Weili, LI Chen. SEM image analysis of multi-scale anisotropy characteristics of coal and rock structure[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S1): 2681-2689. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2010S1018.htm
[4]	龚爽, 赵毅鑫, 王震, 等. 层理对煤岩动态裂纹扩展分形特征的影响[J]. 煤炭学报, 2021, 46(8): 2574-2582. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202108018.htm GONG Shuang, ZHAO Yixin, WANG Zhen, et al. Effect of bedding on the fractal characteristics of dynamic crack propagation in coal rocks[J]. Journal of China Coal Society, 2021, 46(8): 2574-2582. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202108018.htm
[5]	张剑, 康红普, 刘爱卿, 等. 山西西山矿区井下地应力场分布规律[J]. 煤炭学报, 2020, 45(12): 4006-4016. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202012005.htm ZHANG Jian, KANG Hongpu, LIU Aiqing, et al. Distribution law of underground in situ stress field in Xishan coal mine field, Shanxi Province[J]. Journal of China Coal Society, 2020, 45(12): 4006-4016. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202012005.htm
[6]	王琦, 何满潮, 王允偲, 等. 切顶卸压无煤柱自成巷研究进展与展望[J]. 采矿与安全工程学报, 2023, 40(3): 429-447. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202303001.htm WANG Qi, HE Manchao, WANG Yuncai, et al. Research progress and prospect of automatically formed roadway by roof cutting and pressure relief without Pillars[J]. Journal of Mining & Safety Engineering, 2023, 40(3): 429-447. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202303001.htm
[7]	王猛, 李志学, 夏恩乐, 等. 深部巷道围岩能量耗散与支护调控效应[J]. 采矿与安全工程学报, 2022, 39(4): 741-749. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202204011.htm WANG Meng, LI Zhixue, XIA Enle, et al. Energy dissipation and supporting regulation effect of surrounding rock in deep roadway[J]. Journal of Mining & Safety Engineering, 2022, 39(4): 741-749. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202204011.htm
[8]	白永健, 葛华, 冯文凯, 等. 乌蒙山区红层软岩滑坡地质演化及灾变过程离心机模型试验研究[J]. 岩石力学与工程学报, 2019, 38(S1): 3025-3035. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2019S1043.htm BAI Yongjian, GE Hua, FENG Wenkai, et al. Centrifuge model test study on geological evolution and disaster process of red bed soft rock landslide in Wumeng Mountain[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(S1): 3025-3035. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2019S1043.htm
[9]	卢方超, 高建良, 张玉贵, 等. 单轴加载煤孔、裂隙各向异性声波特征[J]. 地球物理学进展, 2018, 33(6): 2555-2562. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWJ201806048.htm LU Fangchao, GAO Jianliang, ZHANG Yugui, et al. Anisotropic ultrasonic characteristics of coal pores and fractures under uniaxial loading[J]. Progress in Geophysics, 2018, 33(6): 2555-2562. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWJ201806048.htm
[10]	卢方超, 张玉贵, 江林华. 单轴加载煤孔裂隙各向异性核磁共振特征[J]. 煤田地质与勘探, 2018, 46(1): 66-72. doi: 10.3969/j.issn.1001-1986.2018.01.012 LU Fangchao, ZHANG Yugui, JIANG Linhua. Anisotropic characteristics of nuclear magnetic resonance of pores and fractures in coal under uniaxial loading[J]. Coal Geology & Exploration, 2018, 46(1): 66-72. doi: 10.3969/j.issn.1001-1986.2018.01.012
[11]	王小琼, 葛洪魁, 王文文, 等. 致密储层岩石应力各向异性与材料各向异性的实验研究[J]. 地球物理学报, 2021, 64(12): 4239-4251. doi: 10.6038/cjg2021P0040 WANG Xiaoqiong, GE Hongkui, WANG Wenwen, et al. Experimental study on stress-related and matrix-related anisotropy in tight reservoirs[J]. Chinese Journal of Geophysics, 2021, 64(12): 4239-4251. doi: 10.6038/cjg2021P0040
[12]	温晓贵, 张勋, 周建, 等. 考虑各向异性的原状软黏土微观结构变化机制研究[J]. 岩土力学, 2011, 32(1): 27-32, 38. doi: 10.3969/j.issn.1000-7598.2011.01.005 WEN Xiaogui, ZHANG Xun, ZHOU Jian, et al. Changing mechanism of microstructure of intact soft clay considering anisotropy[J]. Rock and Soil Mechanics, 2011, 32(1): 27-32, 38. doi: 10.3969/j.issn.1000-7598.2011.01.005
[13]	赵怡晴, 吴常贵, 金爱兵, 等. 热处理砂岩微观结构及力学性质试验研究[J]. 岩土力学, 2020, 41(7): 2233-2240. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202007010.htm ZHAO Yiqing, WU Changgui, JIN Aibing, et al. Experimental study of sandstone microstructure and mechanical properties under high temperature[J]. Rock and Soil Mechanics, 2020, 41(7): 2233-2240. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202007010.htm
[14]	吕兆兴, 冯增朝, 赵阳升. 岩石的非均质性对其材料强度尺寸效应的影响[J]. 煤炭学报, 2007, 32(9): 917-920. doi: 10.3321/j.issn:0253-9993.2007.09.005 LÜ Zhaoxing, FENG Zengchao, ZHAO Yangsheng. Influence of rock inhomogeneity on strength-size effect of rock materials[J]. Journal of China Coal Society, 2007, 32(9): 917-920. doi: 10.3321/j.issn:0253-9993.2007.09.005
[15]	吴兴杰, 靖洪文, 苏海健, 等. 煤系地层砂岩抗拉强度及其矿物粒径效应[J]. 煤矿安全, 2016, 47(7): 47-50. https://www.cnki.com.cn/Article/CJFDTOTAL-MKAQ201607013.htm WU Xingjie, JING Hongwen, SU Haijian, et al. Tensile strength of coal measures sandstone and its mineral particle size effect[J]. Safety in Coal Mines, 2016, 47(7): 47-50. https://www.cnki.com.cn/Article/CJFDTOTAL-MKAQ201607013.htm
[16]	崔智丽, 宫能平, 经来旺. 岩石非理想裂纹圆盘试件动态断裂韧性测试的有限元分析及试验研究[J]. 岩土力学, 2015, 36(3): 694-702. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201503015.htm CUI Zhili, GONG Nengping, JING Laiwang. Experiment and finite element analysis of rock dynamic fracture toughness test on nonideal crack disc specimens[J]. Rock and Soil Mechanics, 2015, 36(3): 694-702. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201503015.htm
[17]	彭相愿, 高富强, 原贵阳, 等. 煤应变型冲击破坏尺寸效应声发射特征试验研究[J]. 采矿与岩层控制工程学报, 2023, 5(3): 64-76. https://www.cnki.com.cn/Article/CJFDTOTAL-MKKC202303007.htm PENG Xiangyuan, GAO Fuqiang, YUAN Guiyang, et al. Experimental study on the size effect of acoustic emission characteristics of coal strainbursts[J]. Journal of Mining and Strata Control Engineering, 2023, 5(3): 64-76. https://www.cnki.com.cn/Article/CJFDTOTAL-MKKC202303007.htm
[18]	钱建固, 林志强. 双孔隙结构重塑非饱和膨胀土的抗剪强度特性[J]. 岩土工程学报, 2023, 45(3): 486-494. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202303005.htm QIAN Jiangu, LIN Zhiqiang. Shear strength behaviors of unsaturated expansive soils with dual-porosity structure[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(3): 486-494. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202303005.htm
[19]	金爱兵, 巨有, 孙浩, 等. 相变储能充填体孔隙结构及强度劣化机制研究[J]. 岩土力学, 2021, 42(10): 2623-2633. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202110001.htm JIN Aibing, JU You, SUN Hao, et al. Pore structure and strength deterioration mechanism of phase change energy storage backfill[J]. Rock and Soil Mechanics, 2021, 42(10): 2623-2633. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202110001.htm
[20]	王相龙, 潘结南, 王凯, 等. 微米CT扫描尺度下构造煤微裂隙结构特征及其对渗透性的控制[J]. 煤炭学报, 2023, 48(3): 1325-1334. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202303018.htm WANG Xianglong, PAN Jienan, WANG Kai, et al. Characteristics of micro-CT scale pore-fracture of tectonic ally deformed coal and their controlling effect on permeability[J]. Journal of China Coal Society, 2023, 48(3): 1325-1334. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202303018.htm
[21]	陈建, 程卫民, 郭立稳, 等. 基于CT和超声波技术联合分析的注水煤岩监测参数规律研究[J]. 采矿与安全工程学报, 2022, 39(4): 786-796. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202204016.htm CHEN Jian, CHENG Weimin, GUO Liwen, et al. Law of monitoring parameters of water injection coal based on the combined analysis of CT and ultrasonic technology[J]. Journal of Mining & Safety Engineering, 2022, 39(4): 786-796. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL202204016.htm
[22]	LUO X, ZHANG Y, ZHOU H, et al. Pore structure characterization and seepage analysis of ionic rare earth orebodies based on computed tomography images[J]. International Journal of Mining Science and Technology, 2022, 32(2): 411-421. doi: 10.1016/j.ijmst.2022.02.006
[23]	毛彦军, 陈曦, 范超男, 等. 基于CT三维重建的注水煤岩体裂隙扩展规律研究[J]. 岩土力学, 2022, 43(6): 1717-1726. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202206024.htm MAO Yanjun, CHEN Xi, FAN Chaonan, et al. Crack network evolution of water injection coal and rock mass by means of 3D reconstruction[J]. Rock and Soil Mechanics, 2022, 43(6): 1717-1726. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202206024.htm
[24]	SONG R, ZHENG L, WANG Y, et al. Effects of pore structure on sandstone mechanical properties based on micro-ct reconstruction model[J]. Advances in Civil Engineering, 2020, 2020(1): 1-21.
[25]	WANG G, QIN X J, HAN D Y, et al. Study on seepage and deformation characteristics of coal microstructure by 3D reconstruction of CT images at high temperatures[J]. International Journal of Mining Science and Technology, 2021, 31(2): 175-185. doi: 10.1016/j.ijmst.2020.11.003
[26]	ZHAO Y X, SONG H, LIU S, et al. Mechanical anisotropy of coal with considerations of realistic microstructures and external loading directions[J]. International Journal of Rock Mechanics and Mining Sciences, 2019, 116: 111-121. doi: 10.1016/j.ijrmms.2019.03.005
[27]	ZHAO Y X, LIU S, ZHAO G F, et al. Failure mechanisms in coal: dependence on strain rate and microstructure[J]. Journal of Geophysical Research Solid Earth, 2015, 119(9): 6924-6935.
[28]	王桂华, 程远方, 梁何生. 岩屑显微硬度法确定地层力学参数[J]. 石油钻探技术, 2003, 31(3): 7-9. doi: 10.3969/j.issn.1001-0890.2003.03.003 WANG Guihua, CHENG Yuanfang, LIANG Hesheng. A new method to determine the formation mechanical properties with cuttings microhardness[J]. Petroleum Drilling Techniques, 2003, 31(3): 7-9. doi: 10.3969/j.issn.1001-0890.2003.03.003
[29]	高富强, 原贵阳, 娄金福, 等. 基于局部矿井刚度理论的冲击地压试验装置研制及应用[J]. 煤炭学报, 2023, 48(5): 1985-1995. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202305012.htm GAO Fuqiang, YUAN Guiyang, LOU Jinfu, et al. Development and application of coal burst experiment system based on local mine stiffness theory[J]. Journal of China Coal Society, 2023, 48(5): 1985-1995. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202305012.htm
[30]	WANG S, XU Y, ZHANG Y B, et al. Effects of sandstone mineral composition heterogeneity on crack initiation and propagation through a microscopic analysis technique[J]. International Journal of Rock Mechanics and Mining Sciences, 2023, 162: 105307. doi: 10.1016/j.ijrmms.2022.105307
[31]	伍法权, 乔磊, 管圣功, 等. 小尺寸岩样单轴压缩试验尺寸效应研究[J]. 岩石力学与工程学报, 2021, 40(5): 865-873. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202105001.htm WU Faquan, QIAO Lei, GUAN Shenggong, et al. Uniaxial compression test study on size effect of small size rock samples[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 40(5): 865-873. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX202105001.htm
[32]	谢和平, 鞠杨, 黎立云. 基于能量耗散与释放原理的岩石强度与整体破坏准则[J]. 岩石力学与工程学报, 2005, 24(17): 3003-3010. doi: 10.3321/j.issn:1000-6915.2005.17.001 XIE Heping, JU Yang, LI Liyun. Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(17): 3003-3010. doi: 10.3321/j.issn:1000-6915.2005.17.001
[33]	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. doi: 10.3321/j.issn:1000-6915.2004.21.001 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. doi: 10.3321/j.issn:1000-6915.2004.21.001
[34]	张志镇, 高峰. 单轴压缩下岩石能量演化的非线性特性研究[J]. 岩石力学与工程学报, 2012, 31(6): 1198-1207. doi: 10.3969/j.issn.1000-6915.2012.06.015 ZHANG Zhizhen, GAO Feng. Research on nonlinear characteristics of rock energy evolution under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(6): 1198-1207. doi: 10.3969/j.issn.1000-6915.2012.06.015

施引文献

资源附件(0)

访问统计

点击查看大图

图(19) / 表(4)

计量

文章访问数: 104
HTML全文浏览量: 8
PDF下载量: 35
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板

基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应

doi: 10.19606/j.cnki.jmst.2024.03.010

作者简介:
张村(1990—)，男，江苏海门人，博士，副教授，博士生导师，主要从事煤矿开采与矿井水资源利用方面的教学与科研工作。Tel：15810194127，E-mail：cumt-zc@cumtb.edu.cn

计量

Damage evolution characteristics of 3D-reconstructed coal during loading and its size effects based on CT scanning

计量

目录

留言板

基于CT扫描的三维重构煤体加载损伤演化特征及尺寸效应

doi: 10.19606/j.cnki.jmst.2024.03.010

作者简介: 张村(1990—)，男，江苏海门人，博士，副教授，博士生导师，主要从事煤矿开采与矿井水资源利用方面的教学与科研工作。Tel：15810194127，E-mail：cumt-zc@cumtb.edu.cn

计量

出版历程

Damage evolution characteristics of 3D-reconstructed coal during loading and its size effects based on CT scanning

计量

出版历程

目录

作者简介:
张村(1990—)，男，江苏海门人，博士，副教授，博士生导师，主要从事煤矿开采与矿井水资源利用方面的教学与科研工作。Tel：15810194127，E-mail：cumt-zc@cumtb.edu.cn