基于图像分析法的冲击倾向性煤体孔隙结构特征研究

doi:10.19286/j.cnki.cci.2025.12.002

摘要
图/表
参考文献(16)
相关文章 (10)

全文: PDF (0 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

为揭示不同冲击倾向性煤体的孔隙结构特征，本文选取山西天池煤矿、余吾煤矿和潞安王庄煤矿3种不同冲击倾向性的煤样，采用扫描电镜（SEM）和显微CT技术，对其微观表面形貌与三维孔隙结构进行了系统分析。研究结果表明，煤体冲击倾向性与其孔隙形貌和空间分布密切相关。强冲击倾向性煤样表面褶曲发育，内部孔隙以条带状挤压孔为主，致密性较高，孔隙率相对较低，整体均质化程度高，易发生能量积聚与瞬时释放；弱冲击倾向性煤样存在挤压断口和次生微裂隙，孔隙率较高且连通性较强，具备一定的瓦斯渗流优势；无冲击倾向性煤样表面较为平整，内部孔隙以粒间晶间孔为主，分布不均且局部集中，承压能力较低。三维孔隙网络模型进一步揭示了不同煤样孔径分布、配位数及喉道特征的差异。本研究可为深部煤体冲击地压与瓦斯灾害的耦合机理分析提供微观依据，对煤矿冲击地压防治及瓦斯治理具有一定指导意义。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	樊九林1
	李朋峰2
	王磊3

关键词 ：冲击倾向性, 孔隙结构, 扫描电镜, CT

Abstract：

In order to reveal the pore structure characteristics of coal with different burst tendency, three coal samples with different burst tendency were selected from Shanxi Tianchi Coal Mine, Yuwu Coal Mine and Lu 'an Wangzhuang Coal Mine. The microscopic surface morphology and three-dimensional pore structure were systematically analyzed by scanning electron microscopy ( SEM ) and micro-CT technology. The results show that the burst tendency of coal is closely related to its pore morphology and spatial distribution. The surface of the coal sample with strong impact tendency is folded and developed, and the internal pores are mainly banded extrusion pores. The compactness is high, the porosity is relatively low, the overall homogenization degree is high, and the energy accumulation and instantaneous release are easy to occur. The coal samples with weak impact tendency have extrusion fractures and secondary microcracks, with high porosity and strong connectivity, and have certain advantages of gas seepage. The surface of the non-impact prone coal sample is relatively flat, and the internal pores are mainly intergranular pores, which are unevenly distributed and locally concentrated, and the pressure bearing capacity is low. The three-dimensional pore network model further reveals the differences in pore size distribution, coordination number and throat characteristics of different coal samples. The research in this paper can provide a microscopic basis for the analysis of the coupling mechanism between rock burst and gas disaster in deep coal, and has certain guiding significance for the prevention and control of rock burst and gas control in coal mines.

Key words： impact tendency pore structure scanning electron microscope CT

作者简介: 樊九林（ 1968— ），男，江苏泰县人，高级工程师。

引用本文:

樊九林1，李朋峰2，王磊3. 基于图像分析法的冲击倾向性煤体孔隙结构特征研究[J]. 煤炭与化工, 2025, 48(12): 9-14. Fan Jiulin 1, Li Pengfeng 2, Wang Lei 3. Study on pore structure characteristics of burst prone coal based on image analysis method. CCI, 2025, 48(12): 9-14.

链接本文:

http://www.mtyhg.com.cn/CN/10.19286/j.cnki.cci.2025.12.002 或 http://www.mtyhg.com.cn/CN/Y2025/V48/I12/9

[ 1 ]       荣腾龙，刘克柳，周宏伟，等. 采动应力下深部煤体渗透率演化规律研究[ J ]. 岩土工程学报，2022，44（ 6 ）：1 106 -
             1 114.
[ 2 ]       张    雷，周宏伟，王向宇，等. 考虑蠕变影响的深部煤体分数阶渗透率模型研究[ J ]. 岩土工程学报，2020，42（ 8 ）：1 516 - 1 524.
[ 3 ]       郭依宝，周宏伟，荣腾龙，等. 采动应力路径下深部煤体扰动特征[ J ]. 煤炭学报，2018，43（ 11 ）：3 072 - 3 079.
[ 4 ]       Wang X, Zhang L. Experimental Study on Permeability Evolution of Deep Coal Considering Temperature[ J ]. Sustainability, 2022, 14( 22 ): 14 923 - 14 923.
[ 5 ]       Liu X, Wang L, Kong X, et al. Role of pore irregularity in methane desorption capacity of coking coal[ J ]. Fuel 2022，314.
[ 6 ]       翟    成，孙    勇，范宜仁，等. 低场核磁共振技术在煤孔隙结构精准表征中的应用与展望[ J ]. 煤炭学报，2022，47（ 2 ）：828 - 848.
[ 7 ]       Wang F, Zhang X, Zhang S, et al. Mechanism of solvent extractio-
n-induced changes to nanoscale pores of coal before and after acidification[ J ]. Fuel 2022, 310.
[ 8 ]       林海飞，婧    婷，严    敏，等. 中低阶煤孔隙结构特征的氮吸附法和压汞法联合分析[ J ]. 西安科技大学学报，2019，39（ 1 ）：1 - 8.
[ 9 ]       张召召，潘结南，李    猛，等. 基于压汞和低温氮吸附联合试验的不同变质程度煤全孔隙结构特征研究[ J ]. 煤矿安全，2018，49（ 4 ）：25 - 29.
[ 10 ]     Zhang S, Liu H, Jin Z, et al. Multifractal Analysis of Pore Structure in Middle- and High-Rank Coal by Mercury Intrusion Porosimetry and Low-Pressure N2 Adsorption [ J ]. Natural Resources Research. Volume 30, Issue 6. 2021. PP 4 565 - 4 584.
[ 11 ]     倪冠华，荀    猛，窦浩然，等. 基于酸热耦合作用的煤体微观孔隙结构演化规律研究[ J ]. 煤矿安全，2022，53（ 10 ）：15 - 22.
[ 12 ]     李    阳，张玉贵，张    浪，等. 基于压汞、低温N2吸附和CO2吸附的构造煤孔隙结构表征[ J ]. 煤炭学报，2019，44（ 4 ）：1 188 - 1 196.
[ 13 ]     Liu P, Liu A, Liu S, et al. Experimental evaluation of ultrasound treatment induced pore structure and gas desorption behavior alterations of coal[ J ]. Fuel 2022, 307.
[ 14 ]     Wang X, Pan J, Wang K, et al. Characterizing the shape, size, and distribution heterogeneity of pore-fractures in high rank coal based on X-ray CT image analysis and mercury intrusion porosimetry[ J ]. Fuel 2020, 282.
[ 15 ]     王    刚，杨鑫祥，张孝强，等. 基于CT三维重建的煤层气非达西渗流数值模拟[ J ]. 煤炭学报，2016，41（ 4 ）：931 -
             940.
[ 16 ]     Khurpade PD, Kshirsagar LK, Nandi S. Characterization of hetero-
geneous petroleum reservoir of Indian Sub-continent: An integrated approach of hydraulic flow unit - Mercury intrusion capillary pressure - Fractal model [ J ]. Journal of Petroleum Science and Engineering 2021, 205.