不同倾角影响层状复合岩体NPR锚固力学特性的试验研究

doi:10.3724/1000-6915.jrme.2025.0278

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (4768 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Understanding the mechanical behavior of anchored composite rocks is essential for revealing the deformation and failure mechanisms of bolted layered rock structures. The study examines the mechanical characteristics of sandstone-mudstone composite specimens under different bedding dip angles and cable support types, using acoustic emission (AE) and digital image correlation (DIC) techniques for monitoring. Experimental results indicate that specimens anchored with PR cables exhibit more extensive damage and a higher crack density than those reinforced with NPR cables. Both types of anchored composite specimens display a clear bedding angle effect (15°–45°) on their compressive strength and surface displacement evolution. Specifically, compressive strength decreases progressively with increasing dip angle, and high-displacement zones on the specimen surface expand accordingly. Meanwhile, the failure mode shifts from localized small-scale cracking at 15° to interface slip failure at 45°. Notably, the bedding angle affects the AE characteristics of PR-anchored and NPR-anchored specimens in different ways. In PR-anchored samples, the proportion of shear cracks and high-frequency AE signals increases with dip angle, reflecting a clear sensitivity to bedding orientation. In contrast, NPR-anchored specimens exhibit relatively stable tensile-shear crack proportions and AE frequency distributions regardless of dip angle. These findings provide a theoretical basis for addressing stability challenges in roadways with layered sandstone–mudstone roofs and contribute to the advancement of bolting support technologies for composite rock masses with inclined bedding structures.

Key words： rock mechanics composite anchored rock bedding angle NPR anchor cable acoustic emission DIC

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Jiong1
	2
	CHANG Yiwen1
	2
	LIU Peng1
	2
	JIANG Jian1
	2
	HAN Jing1
	2
	HE Manchao1
	2
	LUO Aizhong3

Cite this article:

WANG Jiong1,2,CHANG Yiwen1, et al. Mechanical properties of NPR anchorage in layered composite rock mass under the influence of different dip angles[J]. , 2025, 44(10): 2551-2564.

URL:

https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0278 OR https://rockmech.whrsm.ac.cn/EN/Y2025/V44/I10/2551

[1]	何满潮. 深部的概念体系及工程评价指标[J]. 岩石力学与工程学报，2005，24(16)：2 854-2 858.(HE Manchao. Concept system and evaluation indexes for deep engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 854-2 858.(in Chinese))
[2]	何满潮，马新根，牛福龙，等. 中厚煤层复合顶板快速无煤柱自成巷适应性研究与应用[J]. 岩石力学与工程学报，2018，37(12)： 2 641-2 654.(HE Manchao，MA Xingen，NIU Fulong，et al. Adaptability research and application of rapid gob-side entry retaining formedby roof cutting and pressure releasing with composite roof andmedium thick coal seam[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(12)：2 641-2 654.(in Chinese))
[3]	何满潮，马新根，王炯，等. 中厚煤层复合顶板切顶卸压自动成巷工作面矿压显现特征分析[J]. 岩石力学与工程学报，2018，37(11)：2 425-2 434.(HE Manchao，MA Xingen，WANG Jiong，et al. Feature analysis of working face strata pressure with roof cutting pressurereleasing in medium-thick seam and compound roof condition[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(11)：2 425-2 434.(in Chinese))
[4]	何满潮，高玉兵，杨军，等. 无煤柱自成巷聚能切缝技术及其对围岩应力演化的影响研究[J]. 岩石力学与工程学报，2017，36(6)：1 314-1 325.(HE Manchao，GAO Yubing，YANG Jun，et al. An energy-gathered roof cutting technique in no-pillar mining and itsimpact on stress variation in surrounding rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(6)：1 314-1 325.(in Chinese))
[5]	殷鹏飞. 层状复合岩石试样力学特性单轴压缩试验与颗粒流模拟研究[硕士学位论文][D]. 北京：中国矿业大学(北京)，2016.(YIN Pengfei. Experimental and particle flow simulation onmechanical properties of layered composite rockunder uniaxial compression[M. S. Thesis][D]. Beijing：China University of Mining and Technology(Beijing)，2016.(in Chinese))
[6]	肖长富，林新，吴刚，等. 层间粘结强度对复合岩石压缩力学性能特性的影响[J]. 重庆大学学报：自然科学版，1988，11(1)：120-126.(XIAO Changfu，LIN Xin，WU Gang，et al. The effect of the bond strength between layers on compressive mechanical properties of the composite rock[J]. Journal of Chongqing University：Natural Science，1988，11(1)：120-126.(in Chinese))
[7]	杨仁树，李炜煜，方士正，等. 层状复合岩体冲击动力学特性试验研究[J]. 岩石力学与工程学报，2019，38(9)：1 747-1 757.(YANG Renshu，LI Weiyu，FANG Shizheng，et al. Experimental study on impact dynamic characteristics of layered composite rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(9)：1 747- 1 757.(in Chinese))
[8]	周辉，宋明，张传庆，等. 水平层状复合岩体变形破坏特征的围压效应研究[J]. 岩土力学，2019，40(2)：465-473.(ZHOU Hui，SONG Ming，ZHANG Chuanqing，et al. Effect of confining pressure on mechanical propertiesof horizontal layered composite rock[J]. Rock and Soil Mechanics，2019，40(2)：465-473.(in Chinese))
[9]	TAN Y L，MA Q，LIU X S，et al. Failure prediction from crack evolution and acoustic emission characteristics of coal-rock sandwich composite samples under uniaxial compression[J]. Bulletin of Engineering Geology and the Environment，2022，81(5)：200.
[10]	腾俊洋，唐建新，王进博，等. 层状复合岩体损伤演化规律及分形特征[J]. 岩石力学与工程学报，2018，37(增1)：3 263-3 278.(TENG Junyang，TANG Jianxin，WANG Jinbo，et al. The evolution law of the damage of bedded composite rock and its fractal characteristics[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(Supp.1)：3 263-3 278.(in Chinese))
[11]	ABBAS H A，MOHAMED Z，ABDUL KUDUS S. Deformation behaviour，crack initiation and crack damage of weathered composite sandstone-shale by using the ultrasonic wave and the acoustic emission under uniaxial compressive stress[J]. International Journal of Rock Mechanics and Mining Sciences，2023，170：105497.
[12]	耿志伟，苏占东，王磊，等. 高径比对砂岩单轴压缩声发射特性的影响研究[J]. 实验力学，2021，36(3)：250-258.(GENG Zhiwei，SU Zhandong，WANG Lei，et al. Influence of height-to-diameter ratio on acoustic emission characteristics of sandstone under uniaxial compression[J]. Journal of Experimental Mechanics，2021，36(3)：250-258.(in Chinese))
[13]	宋战平，刘洪珂，郑方，等. 考虑层理倾角的硬质砂岩力学行为及破裂响应特征[J]. 煤田地质与勘探，2023，51(12)：167-175.(SONG Zhanping，LIU Hongke，ZHENG Fang，et al. Mechanical behavior and fracture response characteristics of hard sandstones considering bedding dip angles[J]. Coal Geology and Exploration，2023，51(12)：167-175.(in Chinese))
[14]	王聚贤，梁鹏，张艳博，等. 基于声发射RA-AF值与kneedle算法的岩石拉剪破裂分类研究[J]. 岩石力学与工程学报，2024，43(增1)：3 267-3 279.(WANG Juxian，LIANG Peng，ZHANG Yanbo，et al. Research on classification of rock tensile-shear fracture based on acousticemission RA-AF values and kneedle algorithm[J]. Chinese Journal of Rock Mechanics and Engineering，2024，43(Supp.1)： 3 267-3 279.(in Chinese))
[15]	张艳博，于光远，田宝柱，等. 花岗岩巷道岩爆声发射信号主频特性试验研究[J]. 岩土力学，2017，38(5)：1 258-1 266.(ZHANG Yanbo，YU Guangyuan，TIAN Baozhu，et al. Experimental study of acoustic emission signal dominant-frequency characteristics of rockburst in a granite tunnel[J]. Rock and Soil Mechanics，2017，38(5)：1 258-1 266.(in Chinese))
[16]	MUNOZ H，TAHERI A，CHANDA E K. Pre-peak and post-peak rock strain characteristics during uniaxial compression by 3D digital image correlation[J]. Rock Mechanics and Rock Engineering，2016，49(7)：2 541-2 554.
[17]	傅帅旸，李海波，李晓锋. 基于DIC方法与声发射的花岗岩断裂过程区范围研究[J]. 岩石力学与工程学报，2022，41(12)：2 497-2 508. (FU Shuaiyang，LI Haibo，LI Xiaofeng. Research on the range of fracture process zone of granite based on DIC and acoustic emission[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(12)：2 497-2 508.(in Chinese))
[18]	李元海，靖洪文，刘刚，等. 数字照相量测在岩石隧道模型试验中的应用研究[J]. 岩石力学与工程学报，2007，26(8)：1 684-1 690. (LI Yuanhai，JING Hongwen，LIU Gang，et al. Study on application of digital close rangephotogrammetry to model test of tunnel in jointed rockmasses[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(8)：1 684-1 690.(in Chinese))
[19]	王天佐，王春力，薛飞，等. 不同循环加卸载路径下红砂岩声发射与应变场演化规律研究[J]. 岩石力学与工程学报，2022，41(增1)：2 881-2 891.(WANG Tianzuo，WANG Chunli，XUE Fei，et al. Study on acoustic emission and strain field evolution of red sandstone under different cyclic loading and unloading paths[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(Supp.1)：2 881-2 891.(in Chinese))
[20]	QI X Y，YANG Z，WANG S W，et al. Mechanical damage test and model study of layered composite rock based on acoustic emission and DIC characteristics[J]. Shock and Vibration，2022，https://doi.org/ 10.1155/2022/6568588.
[21]	XIONG B L，SUN J，ZHAO Y M，et al. Quantitative identification of cracks in jointed layered rock specimens under uniaxial compression[J]. Sustainability，2023，15(9)：7 073.
[22]	李恒，杨圣奇，孙博文，等. 双裂隙复合岩层单轴压缩力学性质及损伤机理离散元模拟[J]. 中南大学学报：自然科学版，2023，54(10)：4 000-4 014.(LI Heng，YANG Shengqi，SUN Bowen，et al. Discrete element simulation of mechanical properties and damage mechanism of composite rock containing two fissures underuniaxial compression[J]. Journal of Central South University：Science and Technology，2023，54(10)：4 000-4 014.(in Chinese))
[23]	JING H W，YANG S Q，ZHANG M L，et al. An experimental study on anchorage strength and deformation behavior of large-scale jointed rock mass[J]. Tunnelling and Underground Space Technology，2014，43：184-197.
[24]	葛修润，刘建武. 加锚节理面抗剪性能研究[J]. 岩土工程学报，1988，10(1)：8-19.(GE Xiurun，LIU Jianwu. Study on the shear resistance behavior of bolted rock joints[J]. Chinese Journal of Geotechnical Engineering，1988，10(1)：8-19.(in Chinese))
[25]	LU Y Y，YU Y，FENG G L，et al. Experimental study on dynamic mechanical response and crack control mechanism of anchored layered sandstone by DIC technology[J]. Measurement，2025，250：117078.
[26]	LI M X，TANG D W，QUAN Q Q，et al. Experimental investigation on drilling anchorage for asteroid exploration based on digital image correlation[J]. International Journal of Rock Mechanics and Mining Sciences，2023，170：105522.
[27]	HE M C，GONG W L，WANG J，et al. Development of a novel energy-absorbing bolt with extraordinarily large elongation and constant resistance[J]. International Journal of Rock Mechanics and Mining Sciences，2014，67：29-42.
[28]	孙晓明，张勇，何满潮，等. 深部井巷工程高预应力NPR耦合支护技术[J]. 矿业科学学报，2023，8(1)：50-65.(SUN Xiaoming，ZHANG Yong，HE Manchao，et al. Research of high pre-stress NPR support technology indeep shaft roadway engineering[J]. Journal of Mining Science and Technology，2023，8(1)：50-65.(in Chinese))
[29]	WANG J，LIU P，WU C Z，et al. Mechanical behavior of soft rock roadway reinforced with NPR cables：A physical model test and case study[J]. Tunnelling and Underground Space Technology，2023，138：105203.
[30]	WANG J，LIU P，HE M C，et al. Mechanical behaviour of a deep soft rock large deformation roadway supported by NPR bolts：a case study[J]. Rock Mechanics and Rock Engineering，2023，56(12)：8 851-8 867.
[31]	SUN X M，CUI L，ZHANG Y，et al. Strength characteristics of rock anchored by NPR bolt with different preloads[J]. Journal of Mountain Science，2023，20(3)：834-844.
[32]	MIAO C Y，WANG L，CUI L，et al. Experimental study on the mechanical characteristics of NPR anchored rock under kilometer-deep buried high geostress conditions[J]. Canadian Geotechnical Journal，2025，62：1-15.
[33]	ATKINSON D，BECKER T. A 117 Line 2D Digital Image Correlation Code Written in MATLAB[J]. Remote Sensing，2020，12(18)：2 906.