Optimization analysis on the support performance of composed anchor rod components in gob-side roadway

• Autorzy: Yu Jiang , Jin Linlin , Ma Hongfa , Zhang Jun , Wang Feng , He Xin , Yin Dawei

Identyfikatory

DOI

10.37190/msc/205981

• Języki publikacji: EN

Abstrakty

EN

In response to the failure problem of the roadway support structure for the deep buried mine, the mechanical calculation model was established based on the stress state and the boundary conditions of the composed anchor rod under the large surrounding rock deformation, and the failure discrimination criterion was obtained. Then a structural analysis unit for rock-composed anchor was established using ANSYS simulation software, which intensively researched the single-point and local failure characteristics of anchor rods in gob-side entries, and the optimization measures of the com-posed anchor rods were proposed. The findings reveal that the higher preload could restrain the axial displacement of the anchor rod, leading to stress concentration, fracture, or loosening of anchor bolts or nuts by the insufficient rock deformation. In addition, the stress concentration and plastic deformation of pallet orifice are significant as the main pressure-bearing part. The increase in the surrounding rock deformation leads to an enhanced combined action of pressure and shear force between the steel strip and the pallet edge, which makes the steel strip prone to failure. Consequently, the optimization measures of reducing prestress and increasing the size of pallet and strip are proposed, which can effectively control the deformation of surrounding rock and reduce the stress concentration, plastic deformation and failure rate of composed anchor rod.

Słowa kluczowe

EN

gob-side entry; composed anchor rods; ANSYS; support performance

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2025
• Tom: Vol. 32
• Strony: 65--85
• Opis fizyczny: Bibliogr. 37 poz., rys., tab.

Twórcy

autor

Yu Jiang

• Shandong Energy Group Northwest Mining Co., Ltd, Xi’an, Shanxi, 710018, China
• Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

• https://orcid.org/0009-0003-7253-6162

autor

Jin Linlin

• Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

• https://orcid.org/0009-0002-0052-7294

autor

Ma Hongfa

• Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

• https://orcid.org/0000-0001-5506-8502

autor

Zhang Jun

• Shandong Energy Group Northwest Mining Co., Ltd, Xi’an, Shanxi, 710018, China

• https://orcid.org/0009-0000-3420-1562

autor

Wang Feng

• Shandong Energy Group Northwest Mining Co., Ltd, Xi’an, Shanxi, 710018, China
• Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

• https://orcid.org/0000-0003-2700-2885

autor

He Xin

• Shandong Energy Group Northwest Mining Co., Ltd, Xi’an, Shanxi, 710018, China

• https://orcid.org/0009-0007-5663-3797

autor

Yin Dawei

• Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

• https://orcid.org/0000-0002-8846-2001

Bibliografia

• BONDARENKO V., KOVALEVSKA I., SYMANOVYCH G. et al., 2018, Geomechanics of interference between the operation modes of mine working support elements at their loading, Mining Science, 25, 219–235.
• CAO J., ZHANG N., WANG S. et al., 2020, Physical model test study on support of super pre-stressed anchor in the mining engineering, Engineering Failure Analysis, 118, 104833.
• FU Y., 2021, Numerical simulation study on the bending mechanical properties of W-shaped steel strip, Technology and Market, 28 (10), 119–120.
• JING H., SU H., MENG B. et.al., 2022, Field test research on anchorage mechanical characteristics of roadway bolt, Journal of China University of Mining and Technology, 51 (1), 16–23.
• KANG H., LIN J., WU Y. et.al., 2015, Mechanical performances and compatibility of rock bolt components, Journal of China Coal Society, 40 (1), 11–23.
• KHADEMIAN Z, SEARS M., 2024, Contribution of individual support components to roof stability in a longwall gate road, Mining Metallurgy and Exploration, 41 (2), 695–705.
• LIU J., SUN H., ZHANG Z. et.al., 2019, Research on macro-mechanics mechanism of bolt fracturing and its control with high pre-tensioned force, Coal Science and Technology, 47 (1), 91–96.
• LIU X., WU Y., TAN Y. et.al., 2023, Breaking mechanism of inclined bolts in deep mine roadway with high horizontal stress and the timing of strengthening support, Journal of China Coal Society, 48 (2), 609–622.
• LIU Y., XIA C., WU F. et.al., 2020, A combined support technology of long and short bolts of soft rock tunnels under high ground stresses, Chinese Journal of Rock Mechanics and Engineering, 39 (1), 105–114.
• LUBRYKA D., MADZIARZ M., 2023, Underground testing of load bearing capacity of rock bolting as part of the verification of its proper selection, Mining Science, 30, 63–81.
• MENG X.R, PENG R, ZHAO G M, et al., 2018, Roadway Engineering Mechanical Properties and Roadway Structural Instability Mechanisms in Deep Wells, KSCE Journal of Civil Engineering, 22 (5), 1954–1966.
• MESUTOGLU M., OZKAN I., 2024, Evaluation and comparison of rock bolting versus steel arch sup-port systems in thick coal seam underground galleries: a case study, Mining Metallurgy and Exploration, 41, 1719–1737.
• MING W., YANG X., PAN Y. et al., 2023, Field test and numerical simulation of initial support effect of negative Poisson’s ratio anchor cable under strong impact and vibration, Tunnelling and Underground Space Technology, 133, 104955.
• PAN L., ZHAO T., XING M. et.al., 2023, Research on compression deformation process and load-bearing characteristics of saucer pallet used in mining, Journal of Shandong University of Science and Technology (Natural Science), 42 (2), 53–61.
• RONG H., PAN L., LI X. et al., 2021, Analysis on influence factors of roadway instability in high-stress, steeply inclined extra-thick coal seam, Advances in Civil Engineering, 2021, 4676685.
• SAKHNO I., KORZENIOWSKI W., SHEPTAK K. et al., 2021, Influence of adhesion on stress –strain condition alongside of a full column resin cartridge rock bolt, Mining Science, 28, 233–245.
• SHI X.D., BAI J.W., FENG G.R. et al., 2024, Mechanical response of coal pillar-backfill composite confined by CFRP jackets: parametrical study, Construction and Building Materials, 443, 14.
• SI L., LOU J., YANG J. et.al., 2022, Deformation and stress characteristics of anchor bolt under axial impact, Journal of China Coal Society, 47 (10), 3645–3653.
• TAN Y., MA Q., ZHAO Z. et al., 2019, Cooperative bearing behaviors of roadside support and sur-rounding rocks along gob-side, Geomechanics and Engineering, 18 (4), 439–448.
• WANG D,, HE M., TAO Z. et.al., 2023, Effects of high prestress and rock loading rate on deformation behaviors of high strength and high-toughness steel for rock bolts, Chinese Journal of Rock Mechanics and Engineering, 42 (9), 2212–2223.
• WANG K., BAI J.W., FENG G.R., 2025, Measurement of impact failure evolution of coal samples under in-situ water pressure environment: Visualization SHPB experiment and damage model analysis, Measurement, 253, 15.
• WANG Q., PAN R., LI S. et al., 2018, The control effect of surrounding rock with different combinations of the bolt anchoring lengths and pre-tightening forces in underground engineering, Environmental Earth Sciences, 77 (13), 501.
• WU G.S., YU W.J., PAN B. et al., 2025, Failure mechanics mechanisms and permeability stage evolution of limestone considering wave velocity and failure surface characteristics, Soils and Foundations, 65 (1), 22.
• WU G.S., YU W.J., ZUO J.P. et al., 2020, Experimental and theoretical investigation on mechanisms performance of the rock-coal-bolt (RCB) composite system, International Journal of Mining Science and Technology, 30 (6), 759–768.
• WU G.S., YU W.J., ZUO J.P. et al., 2020, Experimental investigation on rockburst behavior of the rock-coal-bolt specimen under different stress conditions, Scientific Reports, 10 (1), 17.
• WU X., ZHANG Y., ZHANG Z. et al., 2019, Influence of radial stiffness of surrounding rock on dynamic behavior of end-anchored rock bolt under impact loading, Latin American Journal of Solids and Structures, 21 (9), e564.
• WU Y., KANG H., 2013, Failure mechanism study on tail of high strength bolt, Journal of China Coal Society, 38 (9), 1537–1541.
• XIE S., LI H., CHEN D. et al., 2024, Research on the control technology and key parameters of external anchor-internal unloading of surrounding rock during gob-side entry driving under severe mining of 1000-m-deep mine, Rock Mechanics and Rock Engineering, 57 (4), 2913–2932.
• YAN R., NING J., ZHANG Z. et al., 2023, Analysis of diffusion effect and influencing factors of anchoring force of arched rock bolt support plate, Safety in Coal Mines, 54 (4), 126–131.
• YANG Y., CHEN X., XUE Y.C. et al., 2022, Experimental investigation on shear performance of reinforced concrete beams retrofitted by pre-stressed steel strips, Structures, 43, 767–778.
• ZEQIRI K., IBISHI G., SHABANI M. et al., 2021, Preliminary support design for underground mine adit, Artana mine, Kosovo, Mining Science, 28, 141–159.
• ZHA W., WU D., 2018, Study on coupling relationship between surrounding rock deformation and sup-port parameters in deep roadway, International Conference on Civil, Architecture and Disaster Prevention, 218, 012118.
• ZHANG J., LIU L., LIU C. et al., 2022, Mechanism and application of new prestressed yield bolt for con-trolling deep high-stress rock mass, Tunnelling and Underground Space Technology, 119, 104254.
• ZHANG R.J., ZHENG J.J., LI P.Y. et al., 2012, A method for predicting mechanical behaviour of HPJG-Anchors. Part I: Mechanical characteristics and load transfer models, Computers and Geo- technics, 45, 62–73.
• ZHAO H., SU H., QIN X. et al., 2023, Experiment and numerical simulation of strength and stress distribution behaviors of anchored rock mass in a roadway, Geofluids, 2023, 9311206.
• ZHAO Y., ZHANG N., ZHENG X., 2016, Experimental study of axial stress distribution and transfer along the bolt rods in an underground coal mine, Arabian Journal of Geosciences, 9 (1), 30.
• ZHOU J., JIE Z., DONG H. et.al., 2023, Pallet bolt in Liangjia coal mine simulation study on supporting performance of iron-wood composed, Coal Technology, 42 (8), 65–70.