爆堆块度分布对孔隙结构分形特征影响研究

doi:10.3724/1000-6915.jrme.2024.0472

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摘要为了研究爆堆块度分布与内部孔隙结构之间的关系，利用核磁共振(NMR)试验对爆堆相似模型进行孔隙测量及成像。通过Box-counting方法量化和比较模型内部孔隙结构的复杂度，得出爆堆块度分布规律；通过模拟和室内相似试验得出爆堆内部孔隙结构分布状态，结果表明：(1) 对比完整岩石，散体的孔隙度明显偏高，最大可达到81.55%，大粒径碎石内部孔隙的连通性更好，小孔隙和中孔隙T2谱谱峰面积与总谱峰面积之比超过80%，碎石粒径大小影响散体孔隙数量和孔径分布；(2) 散体内部孔隙符合分形规律，极小粒径碎石试件标准差超过0.01，且试件分形维数拟合值R2均小于0.9，散体内部孔隙均匀程度与极小粒径碎石含量关系密切；(3) 散体自身存在沉积效应，极小粒径在试件端部占比超过90%，形成明显分层现象；综合矿山现场及模拟后的爆堆块度分布状况，验证了爆堆 “由低到高，由小到大”的纵向分布状态。极小粒径碎石的沉积效应对爆堆块度分布具有显著意义。

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	崔哲森1
	柴青平2
	刘志龙3
	王雪松4
	袁增森1
	徐振洋1
	5
	6

关键词 ：采矿工程, 块度分布, 核磁共振, 分形特征, 孔隙结构, 沉积效应

Abstract：To investigate the correlation between fragment size distribution and the internal pore structure of muck-piles，Nuclear Magnetic Resonance(NMR) testing was employed to measure and image the pore structure of muck-pile analogues. The complexity of the internal pore structure within these models was quantified and analyzed using the Box-counting method，revealing the underlying patterns of muck-pile fragment size distribution. Through simulations and indoor analogue experiments，the distribution of internal pore structures within muck-piles was elucidated. The results indicate that：(1) compared to intact rock，the porosity of granular materials(muck-pile constituents) is significantly higher，reaching a maximum of 81.55%. The connectivity of pores within larger gravel particles is superior，with the ratio of small and medium pore T2 spectrum peak areas to the total peak area exceeding 80%. The size of gravel particles significantly influences the number of pores and the pore size distribution in granular materials. (2) The internal pores of granular materials adhere to fractal principles. The standard deviation for extremely small-sized gravel specimens exceeds 0.01，and the fitting values of the fractal dimension R2 for these specimens consistently fall below 0.9，suggesting a close relationship between the uniformity of internal pores and the content of extremely small-sized gravel. (3) Granular materials exhibit a sedimentation effect，with extremely small-sized particles accounting for over 90% at the ends of the specimens，resulting in a distinct stratification phenomenon. By integrating on-site mine observations with simulated muck-pile fragment size distributions，the vertical distribution pattern of“from low to high and from small to large”within muck-piles was verified. The sedimentation effect of extremely small-sized gravel significantly impacts the fragment size distribution of muck-piles.

Key words： mining engineering block distribution nuclear magnetic resonance fractal characteristics pore structure deposition effect

引用本文:

崔哲森1，柴青平2，刘志龙3，王雪松4，袁增森1，徐振洋1，5，6. 爆堆块度分布对孔隙结构分形特征影响研究[J]. 岩石力学与工程学报, 2025, 44(S1): 134-145.
CUI Zhesen1，CHAI Qingping2，LIU Zhilong3，WANG Xuesong4，YUAN Zengsen1，XU Zhenyang1，5，6. Study on the influence of fragmentation distribution of blasting heap on fractal characteristics of pore structure. , 2025, 44(S1): 134-145.

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https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0472 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/IS1/134

[14]	孟凡东，翟越，张韵生，等. 冻融损伤后砂岩微结构的多重分形特征[J]. 地下空间与工程学报，2023，19(6)：1 791-1 799.(MENG Fandong，ZHAI Yue，ZHANG Yunsheng，et al. Multifractal characteristics of sandstone microstructure after freeze-thaw damage[J]. Chinese Journal of Underground Space and Engineering，2023，19(6)：1 791-1 799.(in Chinese))
[1]	CHEN M，WEI D，YI C，et al. Failure mechanism of rock mass in bench blasting based on structural dynamics[J]. Bulletin of Engineering Geology and the Environment，2021，80(9)：6 841-6 861.
[15]	HE S，DING Z，HU H，et al. Effect of grain size on microscopic pore structure and fractal characteristics of carbonate-based sand and silicate-based sand[J]. Fractal and Fractional，2021，5(4)：152.
[2]	ZHOU J，LI C，ARSLAN C A，et al. Performance evaluation of hybrid FFA-ANFIS and GA-ANFIS models to predict particle size distribution of a muck-pile after blasting[J]. Engineering with Computers，2021，37(1)：265-274.
[16]	LIU T，CUI M，ZHANG C，et al. Nuclear magnetic resonance analysis of the failure and damage model of rock masses during freeze-thaw cycles[J]. Bulletin of Engineering Geology and the Environment，2022，81(10)：445.
[3]	KOTELEVA N，KHOKHLOV S，FRENKEL I. Digitalization in open-pit mining：A new approach in monitoring and control of rock fragmentation[J]. Applied Sciences，2021，11(22)：10848.
[17]	LI Q，LI X，YIN T. Factors affecting pore structure of granite under cyclic heating and cooling：A nuclear magnetic resonance investigation[J]. Geothermics，2021，96：102198.
[4]	GE X，ZHANG R，LIU J，et al. Predicting the compressive strength of tight sandstone based on the low field NMR and pseudo-triaxial compression measurements[J]. Geomechanics and Geophysics for Geo-Energy and Geo-Resources，2024，https：//doi.org/10.1007/s40948-024-00805-6.
[18]	CASABURO A，PETRONE G，FRANCO F，et al. A review of similitude methods for structural engineering[J]. Applied Mechanics Reviews，2019，71(3)：030802.
[5]	REN Y，SUN Y，MENG X. Multi-scale structural characteristics and the damage evolution mechanism of rock under load[J]. Materials Letters，2023，331：133430.
[19]	孔宪京，刘京茂，邹德高. 堆石料尺寸效应研究面临的问题及多尺度三轴试验平台[J]. 岩土工程学报，2016，38(11)：1 941-1 947. (KONG Xianjing，LIU Jingmao，ZOU Degao. Scale effect of rockfill and multiple-scale triaxial test platform[J]. Chinese Journal of Geotechnical Engineering，2016，38(11)：1 941-1 947.(in Chinese))
[6]	ZHAO Y，LI J，MA G. Experimental study on the damage and degradation characteristics of red sandstone after dry and wet cycling by low magnetic field nuclear magnetic resonance(NMR) technique[J]. Geofluids，2021，2021：1-8.
[20]	郭万里，朱俊高，温彦锋. 对粗粒料4种级配缩尺方法的统一解释[J]. 岩土工程学报，2016，38(8)：1 473-1 480.(GUO Wanli，ZHU Jungao，WEN Yanfeng. Unified description for four grading scale methods for coarse aggregate[J]. Chinese Journal of Geotechnical Engineering，2016，38(8)：1 473-1 480.(in Chinese))
[7]	ZHANG S，YAN J，HU Q，et al. Integrated NMR and FE-SEM methods for pore structure characterization of Shahejie shale from the Dongying Depression，Bohai Bay Basin[J]. Marine and Petroleum Geology，2019，100：85-94.
[21]	WANG G，HAN D，QIN X，et al. A comprehensive method for studying pore structure and seepage characteristics of coal mass based on 3D CT reconstruction and NMR[J]. Fuel，2020，281：118735.
[22]	吴志军，卢槐，翁磊，等. 基于核磁共振实时成像技术的裂隙砂岩渗流特性研究[J]. 岩石力学与工程学报，2021，40(2)：263-275. (WU Zhijun，LU Kui，WENG Lei. Investigations on the seepage characteristics of fractured sandstonebased on NMR real-time imaging[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：263-275.(in Chinese))
[8]	刘伟，曾鹏，闫雷，等. 循环冲击下弱风化岩石力学特性与渗透率演化[J]. 煤炭学报，2021，46(6)：1 855-1 863.(LIU Wei，ZENG Peng，YAN Lei，et al. Mechanical properties and permeability evolution of weakly weathered rocks under cyclic impact[J]. Journal of China Coal Society，2021，46(6)：1 855-1 863.(in Chinese))
[23]	项哲，张农，赵一鸣，等. 基于NMR的低渗岩体硅溶胶吸渗注浆试验研究[J]. 岩石力学与工程学报，2022，41(10)：2 003-2 014. (XIANG Zhe，ZHANG Nong，ZHAO Yiming，et al. Experimental study of silica-sol imbibition grouting in low-permeability rockmasses based on NMR[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(10)：2 003-2 014.(in Chinese))
[9]	XIAO W，YU G，LI H，et al. Thermal cracking characteristics and mechanism of sandstone after high-temperature treatment[J]. Fatigue and Fracture of Engineering Materials and Structures，2021，44(11)：3 169-3 185.
[24]	LI X，WEI W，WANG L，et al. Fractal dimension of digital 3d rock models with different pore structures[J]. Energies(Basel)，2022，15(20)：7 461.
[10]	张慧梅，袁超，慕娜娜，等. 冻融岩石CT图像处理及细观特征分析[J]. 西安科技大学学报，2022，42(2)：219-226.(ZHANG Huimei，YUAN Chao，MU Nana，et al. CT image processing and mesoscopic characteristics analysis of freeze-thaw rock[J]. Journal of Xi?an University of Science and Technology，2022，42(2)：219-226.(in Chinese))
[25]	郝家旺，李庆文，乔兰，等. 高温作用后砂岩的孔隙分形特征与岩石本构模型研究[J]. 华中科技大学学报：自然科学版，2024，52(2)：142-148.(HAO Jiawang，LI Qingwen，QIAO Lan，et al. Study on pore fractal characteristics and rock constitutive model of sandstoneafter high temperature[J]. Journal of Huazhong University of Science and Technology：Natural Science，2024，52(2)：142-148.(in Chinese))
[11]	金爱兵，李木芽，孙浩，等. 不同形状矿石单颗粒压缩破碎特性[J]. 中南大学学报：自然科学版，2023，54(9)：3 585-3 596.(JIN Aibing，LI Muya，SUN Hao，et al. Compression crushing characteristics of single ore particle with different shapes[J]. Journal of Central South University：Science and Technology，2023，54(9)：3 585- 3 596.(in Chinese))
[26]	丁自伟，李小菲，唐青豹，等. 砂岩颗粒孔隙分布分形特征与强度相关性研究[J]. 岩石力学与工程学报，2020，39(9)：1 787-1 796. (DING Ziwei，Ll Xiaofei，TANG Qingbao，et al. Study on correlation between fractal characteristies of pore distributionand strength of sandstone particles[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 787-1 796.(in Chinese))
[12]	FENG Q，HOU S，LIU W，et al. Study on the simulation method and mesoscopic characteristics of rock freeze-thaw damage[J]. Computers and Geotechnics，2023，153：105038.
[27]	张鹏，黄宇琪，张金川，等. 黔西北地区龙潭组海陆过渡相泥页岩孔隙分形特征[J]. 煤炭学报，2018，43(6)：1 580-1 588.(ZHANG Peng，HUANG Yuqi，ZHANG Jinchaun，et al. Fractal characteristics of the Longtan formation transitional shalein northwest Guizhou[J]. Journal of China Coal Society，2018，43(6)：1 580-1 588.(in Chinese))
[13]	HU J，REN Q，YANG D，et al. Cross-scale characteristics of backfill material using NMR and fractal theory[J]. Transactions of Nonferrous Metals Society of China，2020，30(5)：1 347-1 363.
[28]	袁增森. 矿岩爆堆形成过程理论分析及试验研究[硕士学位论文][D]. 鞍山：辽宁科技大学，2023.(YUAN Zengsen. Theoretical analysis and experimental study on formation process of rock burst heap [M. S. Thesis][D]. Anshan：University of Science and Technology Liaoning，2023.(in Chinese))
[14]	孟凡东，翟越，张韵生，等. 冻融损伤后砂岩微结构的多重分形特征[J]. 地下空间与工程学报，2023，19(6)：1 791-1 799.(MENG Fandong，ZHAI Yue，ZHANG Yunsheng，et al. Multifractal characteristics of sandstone microstructure after freeze-thaw damage[J]. Chinese Journal of Underground Space and Engineering，2023，19(6)：1 791-1 799.(in Chinese))
[15]	HE S，DING Z，HU H，et al. Effect of grain size on microscopic pore structure and fractal characteristics of carbonate-based sand and silicate-based sand[J]. Fractal and Fractional，2021，5(4)：152.
[16]	LIU T，CUI M，ZHANG C，et al. Nuclear magnetic resonance analysis of the failure and damage model of rock masses during freeze-thaw cycles[J]. Bulletin of Engineering Geology and the Environment，2022，81(10)：445.
[17]	LI Q，LI X，YIN T. Factors affecting pore structure of granite under cyclic heating and cooling：A nuclear magnetic resonance investigation[J]. Geothermics，2021，96：102198.
[18]	CASABURO A，PETRONE G，FRANCO F，et al. A review of similitude methods for structural engineering[J]. Applied Mechanics Reviews，2019，71(3)：030802.
[19]	孔宪京，刘京茂，邹德高. 堆石料尺寸效应研究面临的问题及多尺度三轴试验平台[J]. 岩土工程学报，2016，38(11)：1 941-1 947. (KONG Xianjing，LIU Jingmao，ZOU Degao. Scale effect of rockfill and multiple-scale triaxial test platform[J]. Chinese Journal of Geotechnical Engineering，2016，38(11)：1 941-1 947.(in Chinese))
[20]	郭万里，朱俊高，温彦锋. 对粗粒料4种级配缩尺方法的统一解释[J]. 岩土工程学报，2016，38(8)：1 473-1 480.(GUO Wanli，ZHU Jungao，WEN Yanfeng. Unified description for four grading scale methods for coarse aggregate[J]. Chinese Journal of Geotechnical Engineering，2016，38(8)：1 473-1 480.(in Chinese))
[21]	WANG G，HAN D，QIN X，et al. A comprehensive method for studying pore structure and seepage characteristics of coal mass based on 3D CT reconstruction and NMR[J]. Fuel，2020，281：118735.
[22]	吴志军，卢槐，翁磊，等. 基于核磁共振实时成像技术的裂隙砂岩渗流特性研究[J]. 岩石力学与工程学报，2021，40(2)：263-275. (WU Zhijun，LU Kui，WENG Lei. Investigations on the seepage characteristics of fractured sandstonebased on NMR real-time imaging[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：263-275.(in Chinese))
[23]	项哲，张农，赵一鸣，等. 基于NMR的低渗岩体硅溶胶吸渗注浆试验研究[J]. 岩石力学与工程学报，2022，41(10)：2 003-2 014. (XIANG Zhe，ZHANG Nong，ZHAO Yiming，et al. Experimental study of silica-sol imbibition grouting in low-permeability rockmasses based on NMR[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(10)：2 003-2 014.(in Chinese))
[24]	LI X，WEI W，WANG L，et al. Fractal dimension of digital 3d rock models with different pore structures[J]. Energies(Basel)，2022，15(20)：7 461.
[25]	郝家旺，李庆文，乔兰，等. 高温作用后砂岩的孔隙分形特征与岩石本构模型研究[J]. 华中科技大学学报：自然科学版，2024，52(2)：142-148.(HAO Jiawang，LI Qingwen，QIAO Lan，et al. Study on pore fractal characteristics and rock constitutive model of sandstoneafter high temperature[J]. Journal of Huazhong University of Science and Technology：Natural Science，2024，52(2)：142-148.(in Chinese))
[26]	丁自伟，李小菲，唐青豹，等. 砂岩颗粒孔隙分布分形特征与强度相关性研究[J]. 岩石力学与工程学报，2020，39(9)：1 787-1 796. (DING Ziwei，Ll Xiaofei，TANG Qingbao，et al. Study on correlation between fractal characteristies of pore distributionand strength of sandstone particles[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 787-1 796.(in Chinese))
[27]	张鹏，黄宇琪，张金川，等. 黔西北地区龙潭组海陆过渡相泥页岩孔隙分形特征[J]. 煤炭学报，2018，43(6)：1 580-1 588.(ZHANG Peng，HUANG Yuqi，ZHANG Jinchaun，et al. Fractal characteristics of the Longtan formation transitional shalein northwest Guizhou[J]. Journal of China Coal Society，2018，43(6)：1 580-1 588.(in Chinese))
[28]	袁增森. 矿岩爆堆形成过程理论分析及试验研究[硕士学位论文][D]. 鞍山：辽宁科技大学，2023.(YUAN Zengsen. Theoretical analysis and experimental study on formation process of rock burst heap [M. S. Thesis][D]. Anshan：University of Science and Technology Liaoning，2023.(in Chinese))