International Journal of Rock Mechanics and Mining Sciences最新文献

{"title":"Tunnel face rock mass class identification based on multi-domain feature extraction and selection of TBM cutterhead vibration signals","authors":"Qisheng Tang ,&nbsp;Qiuming Gong ,&nbsp;Yangyang Liu ,&nbsp;Mila Guli ,&nbsp;Alemasi Bieke ,&nbsp;Shaoqiang Liu","doi":"10.1016/j.ijrmms.2025.106066","DOIUrl":"10.1016/j.ijrmms.2025.106066","url":null,"abstract":"<div><div>The rock mass class identification of the tunnel face is a key problem for TBM operating parameters optimization and subsequent tunnel support measures selection. This study presents a rock mass class identification method by monitoring and classifying TBM cutterhead vibration signals. Firstly, vibration signals were collected by a set of cutterhead vibration monitoring system installed on the TBM cutterhead during TBM tunnelling. The corresponding rock mass classification were conducted along the excavated tunnel field investigation. Secondly, time statistics and waveform, power spectrum frequency, nonlinear and time-frequency domain were extracted from the TBM cutterhead vibration signal. 18 features were selected by Boruta-SHAP feature selection method as important feature set. Based on the result analysis of different machine learning models, the XGBoost model was the best model used to identify the rock mass class. Its accuracy was up to 98.79 % on the test set. Finally, the feature sensitivity analysis by SHAP interpretation showed that energy entropy, Imf6e and kurtosis were the most sensitive features for different rock mass classes.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106066"},"PeriodicalIF":7.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of roughness and slip velocity on the evolution of frictional strength","authors":"Quan Gan ,&nbsp;Xinyuan Zhang ,&nbsp;Qiang Li ,&nbsp;Jianye Chen ,&nbsp;Fengshou Zhang ,&nbsp;Zhen Zhong ,&nbsp;Yunzhong Jia ,&nbsp;Pengliang Yu ,&nbsp;Mengke An ,&nbsp;Derek Elsworth","doi":"10.1016/j.ijrmms.2025.106076","DOIUrl":"10.1016/j.ijrmms.2025.106076","url":null,"abstract":"<div><div>Surface roughness and slip velocity play a critical role in determining the strength of crustal faults and their potential seismic response. We examine these controls through slide-hold-slide (SHS) experiments on bare sandstone fractures of variable roughnesses and slip velocities. These experiments explore the effects of frictional healing and frictional relaxation quantified through rate-and state-dependent friction law (RSF). Frictional healing rates (<em>β</em>) range between 0.0020 and 0.0074 and frictional relaxation rates (<em>β</em>_c) between 0.0058 and 0.0097. Increases in surface roughness and shear velocity each accelerate healing and relaxation, whereas elevated normal stresses promote accelerated healing but suppress relaxation. Fracture contact area is closely correlated with changes in frictional healing rate with the evolution of protrusion playing a key role in this frictional response. The number of time-binned AE ring-down counts increase with increasing strength as observed during reactivation – and therefore serve as a reliable indicator of increased strength gain. The logarithmic relationship between hold-time and evolution in the contact area is confirmed by correlations with seismic moment independently measured from the absolutely calibrated AE data. This correlates with an observed increased RSF-<em>b</em> evocative of elevated frictional recovery during hold that translates to a more rapid and intense energy release.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106076"},"PeriodicalIF":7.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterogeneous mechanical and sorption characteristics induced interaction among different components in coal: Experiment and simulation","authors":"Farui Shi ,&nbsp;Heping Xie ,&nbsp;Minghui Li ,&nbsp;Bozhi Deng ,&nbsp;Delei Shang ,&nbsp;Jun Lu","doi":"10.1016/j.ijrmms.2025.106064","DOIUrl":"10.1016/j.ijrmms.2025.106064","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Coal formation necessitates a long geological age and intricate physical, chemical, and biological processes. Throughout this process, variations in the raw materials and external conditions contribute to coal formation, resulting in the final mined coal being a heterogeneous mixture of multiple components. This study takes bituminous coal as the research object to investigate its heterogeneous sorption and mechanical characteristics and their effects. Firstly, various non-destructive techniques employing CT, SEM, and EDS were conducted to elucidate coal’s structure. It is found that in the CT and SEM images, the mineral components contribute more white color, while organic components contribute more dark color. As organic and mineral components mixed in various forms in the observations, the coal has a heterogeneous structure characteristic on various scales. Based on the heterogeneous structure, indentation experiments were conducted on different areas in coal. The indentation results demonstrated the relationship between the mechanical modulus and the structure of various components. It was found that the area with more mineral matter had a higher mechanical modulus, implying heterogeneous mechanical characteristics in coal considering its heterogeneous structure. Simultaneously, sorption deformation kinetics experiments were performed in various areas dominated by different coal components. It was found that the CO&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;-induced sorption deformation is faster to reach equilibrium in the high-density area than in the low-density area. The difference in sorption deformation rate is able to result in the mechanical interaction among components. That can be reflected in a specific kinetics of sorption deformation where the sorption strain firstly increases and then decreases throughout the sorption process, revealing the heterogeneous local sorption deformation characteristics in coal. According to experimental findings and theoretical analysis, a multi-component contact mechanics model involving the heterogeneous coal structure was constructed for simulations using a self-developed nonlinear contact finite element program. Considering heterogeneous mechanical and sorption deformation characteristics from the experimental part, the program simulated the mechanical response of coal components. In alignment with the experimental results, the strain that increases first and then decreases can be obtained, confirming that the mechanical interaction among components may be induced by the heterogeneous sorption and mechanical characteristics of coal. The findings derived from the current work can provide a deeper understanding of the mechanical behavior of coal bodies in the context of solid-gas coupling and establish a foundation for practical coal-gas engineering applications, such as predicting the geomechanical performance of coal and mitigating potential geohazards (e.g","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106064"},"PeriodicalIF":7.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical and numerical investigation of damage zones in deep tunnels within a layered rock mass under full-face blasting","authors":"Yu Lu ,&nbsp;Ben-Guo He ,&nbsp;Hong-Pu Li ,&nbsp;Qi Li ,&nbsp;Chong Ren","doi":"10.1016/j.ijrmms.2025.106053","DOIUrl":"10.1016/j.ijrmms.2025.106053","url":null,"abstract":"<div><div>The spatial characteristics and mechanism of formation of a blast-induced damage zone (BIDZ) in tunnels with layered rock mass are not well understood, despite being a common excavation phenomenon. Layers affect how stress waves propagate and lead to the formation of a BIDZ. Theoretical analysis and numerical simulation were conducted to investigate the propagation of blast stress waves and the spatial distribution of the BIDZ. From a theoretical perspective, the propagation process of blasting stress waves and the damage depths in the layered rock mass were calculated. Dynamic modelling results show that the proposed blasting damage model incorporating tensile and compressive-shear coupling with equivalent boundary methods, captures the three-dimensional patterns of the BIDZ. The spatial characteristics of the maximum and minimum damage depths were at the roof and foot of the tunnel, as evinced by <em>in-situ</em> tests. Furthermore, this study offers critical insights for predicting damage and vibration effects by comparing with four widely used models. The maximum damage depth is affected by the thickness and dip angle of the layer, as well as the <em>in-situ</em> stress. Both the spatial extent and radial depth of the BIDZ exhibit a positive correlation with the thickness of the layers. The dip angle of rock layer affects the location of the maximum depth of damage in the tunnel section. The findings highlight how important it is to account for the BIDZ when assessing the safety and stability of a tunnel within a layered rock mass, as well as optimizing any support design.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106053"},"PeriodicalIF":7.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation of time-dependent response of jointed rock masses using the 3D DEM-DFN modeling approach","authors":"Mingzheng Wang ,&nbsp;Ming Cai","doi":"10.1016/j.ijrmms.2025.106062","DOIUrl":"10.1016/j.ijrmms.2025.106062","url":null,"abstract":"<div><div>Investigating the mechanical response of jointed rock mass, especially its potential changes over time, is vital for the design of geotechnical structures with a long service lifetime. This article studies time-dependent deformations of jointed rock masses based on the 3D distinct element method (DEM) incorporating discrete fracture networks (DFN). A new 3D creep model for jointed rock masses is developed, emphasizing the structural failure due to the creep sliding of joints while considering the long-term strength and the time-to-failure phenomenon of intact rocks. The creep sliding constitutive model of joints is developed based on Barton's nonlinear strength criterion. First, the model implementation, parameter calibration, and model validations are introduced. Then, a case study of the TAS08 tunnel in Äspö Hard Rock Laboratory (HRL) in Sweden is presented. A DFN model using field mapping data is constructed using Mofrac. The time-dependent response of the TAS08 tunnel is analyzed using the proposed creep model for jointed rock masses. Based on the simulation results, it show that the proposed approach can effectively simulate the time-dependent deformation of jointed rock masses. The DEM-DFN simulation approach provides a valuable tool for analyzing time-dependent responses of excavations and managing hazards associated with structurally controlled failures.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106062"},"PeriodicalIF":7.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Water retention behavior of a gas shale: Wettability-controlled water saturation and anisotropic hydromechanical response","authors":"Jinwoo Kim ,&nbsp;Alessio Ferrari ,&nbsp;Russell Ewy ,&nbsp;Lyesse Laloui","doi":"10.1016/j.ijrmms.2025.106061","DOIUrl":"10.1016/j.ijrmms.2025.106061","url":null,"abstract":"<div><div>Gas shales are fine-grained, organic-rich sedimentary geomaterials with ultra-low permeability requiring hydraulic stimulation for gas extraction. Characterizing their water retention behavior is critical for predicting hydromechanical behavior and fluid flow, yet it remains challenging due to their complex pore network and mixed wettability. This study investigates the water retention behavior of a gas shale through comprehensive characterization and laboratory tests, where water content and strains both perpendicular and parallel to the bedding plane were measured over two wetting-drying cycles. The results suggest that the coexistence of hydrophilic clay minerals and hydrophobic organic matter limits water access to parts of the pore and microcrack network, resulting in incomplete saturation even at a null suction. Three water retention models were modified by introducing an additional parameter to account for this wettability effect, among which the van Genuchten model provided the best overall fit. The fitted curves revealed a surprisingly low air entry value, underscoring the role of percolated hydrophobic networks in facilitating gas flow. The swelling strains indicated irreversible opening of bedding-parallel microcracks. The shrinkage strains were reversible, better representing the elastic hydromechanical anisotropy. Comparisons with other shales revealed that shrinkage anisotropy correlates more strongly with burial depth than with clay fraction, suggesting that compaction and diagenesis may play a more critical role than the amount of clay. Wettability may reduce the impact of pores and microcracks on shrinkage anisotropy. These findings emphasize the need for advanced constitutive models for gas shales that incorporate the observed wettability-controlled water saturation and hydromechanical anisotropy.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106061"},"PeriodicalIF":7.0,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crack aperture and hydraulic conductivity tensors for cracked crystalline rock masses","authors":"Masanobu Oda ,&nbsp;Takato Takemura ,&nbsp;Kenichiro Suzuki","doi":"10.1016/j.ijrmms.2025.106058","DOIUrl":"10.1016/j.ijrmms.2025.106058","url":null,"abstract":"<div><div>A hydraulic conductivity tensor for a cracked crystalline rock mass was formulated in closed form as a function of the following parameters: 1) the mean and standard deviation in a lognormal distribution of crack apertures, 2) the number of hydraulically conductive cracks intersected by a scanline per unit length and correction term depending on the scanline direction, 3) the fabric tensor determined by the statistical distribution of unit vectors normal to the crack surfaces, and 4) the in-situ stress state. A key point is that all these parameters can be determined in actual fields by analysing the data obtained from conventional field surveys. Using the data previously reported, the mean values of some involved parameters were suggested for crystalline rock masses to give a useable equation in fields. The number of conductive cracks intersected by a scanline is the only remaining variable for estimating the hydraulic conductivity at a given site and varies from site to site due to geological histories and situations. To do this, however, we needed one crucial assumption that the hydraulically conductive cracks could be identified as “open” or “distinct” on images taken by a borehole TV camera. The proposed equation agrees well with the depth-dependent hydraulic conductivities at four sites in Japan, USA, and Canada. One exception was also reported at a site in Japan, where the granite matrix was critically weathered, and hence, cracks were no longer the major flow paths.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106058"},"PeriodicalIF":7.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental insights into coupled hydraulic, mechanical, and electrical behaviors of granite fractures: Implications for indirect estimation of crustal permeability changes","authors":"Takuya Ishibashi,&nbsp;Yusuke Yamaya,&nbsp;Hiroshi Asanuma","doi":"10.1016/j.ijrmms.2025.106060","DOIUrl":"10.1016/j.ijrmms.2025.106060","url":null,"abstract":"<div><div>To indirectly ascertain the coupled hydraulic and mechanical behaviors within subsurface rock fracture networks, it is imperative to establish principles linking permeability, geophysical exploration data (such as electrical conductivity and elastic wave velocity), and internal void structure. To enhance our foundational understanding of these aspects, we conducted an experimental investigation into the hydraulic-mechanical-electric coupled behaviors of granite fractures exhibiting various degrees of surface roughness. The study involved two cases: varying the external pressure (i.e., confining pressure) under a constant flow rate, and varying the pore pressure and associated flow rate under a constant external pressure. Laboratory experiments yielded the following key insights: (1) Both the permeability and electrical conductivity of granite fractures exhibited nonlinear reductions with increasing effective stress, followed by increments upon decreasing effective stress. Notably, we observed hysteresis in both parameters during loading and unloading phases. (2) Fractures with rougher surfaces demonstrated increased impedance to fluid and electrical flow. Particularly in instances of highly rough surface fractures, subtle variations in the pore structure resulted in notable discrepancies in the trends of permeability and electrical conductivity alterations. (3) The ratio of hydraulic aperture to electrical aperture was quantified as approximately 0.11 for saw-cut fractures roughened with silicon carbide, while it ranged between 0.18 and 0.37 for tensile mode fractures. Based on these results, we present an indirect estimation method for crustal permeability changes in fractured rocks based on 3-D time-lapse ERT imaging results. According to this method, it is estimated that in the observation period covered by Johnson et al. (2021), crustal permeability at the EGS Collab site may increase by a maximum of 2.1–3.8 times due to the pressure-induced aperture dilation of pre-existing natural fractures, while compressive shadow stress may reduce the crustal permeability by a factor of 0.3–0.5 times the original value.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106060"},"PeriodicalIF":7.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Creating multidirectional fractures through particle jamming","authors":"Yusuke Mukuhira ,&nbsp;Ryota Goto ,&nbsp;Noriaki Watanabe ,&nbsp;Kazumasa Sueyoshi ,&nbsp;Kohei Takuma ,&nbsp;Rongchang Zhang ,&nbsp;Tongfei Tian ,&nbsp;Vladimir Sokolovski ,&nbsp;Makoto Naoi ,&nbsp;Yuko Arai ,&nbsp;Takaaki Tomai ,&nbsp;Masaoki Uno ,&nbsp;Takatoshi Ito","doi":"10.1016/j.ijrmms.2025.106051","DOIUrl":"10.1016/j.ijrmms.2025.106051","url":null,"abstract":"<div><div>Hydraulic fracturing initiates the fractures along the direction of maximum-stress in a plane normal to a borehole by injecting high-pressure fluid. Nucleated fractures enhance permeability around boreholes, facilitating the extraction of various subsurface resources and the injection of storage fluids such as CO₂ or H₂. However, hydraulic fracturing cannot technically generate fractures in directions other than that of the maximum-stress orientation; therefore, permeability enhancement is also limited along that direction. Here, we show experimentally induced multidirectional fractures using shear thickening fluid (STF) as the fracturing fluid, where its viscosity changes with shear rate owing to jamming of suspended nanoparticles. Laboratory experiments under uniaxial, biaxial, and true-triaxial conditions revealed that solidified STF effectively sealed nucleated fractures, leading to increased borehole pressure, even after the initial fracturing. In contrast, traditional hydraulic fracturing cannot maintain borehole pressure once the first hydraulic fracture is nucleated. This repeated pressure buildup facilitated the generation of multidirectional fractures, significantly increasing permeability in various directions around boreholes and substantially improving access to targeted formations. Consequently, the novel approach of using STF in fracturing successfully overcomes the limitations of traditional hydraulic fracturing techniques, which can increase the efficiency of energy extraction and impoundment to reduce global carbon footprint.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106051"},"PeriodicalIF":7.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesomechanical weakening mechanism of coal modified by nanofluids with disparately sized SiO2 nanoparticles","authors":"Quanle Zou,&nbsp;Tengfei Ma,&nbsp;Jinyan Liang,&nbsp;Bochao Xu,&nbsp;Qican Ran","doi":"10.1016/j.ijrmms.2025.106056","DOIUrl":"10.1016/j.ijrmms.2025.106056","url":null,"abstract":"<div><div>Owing to their stability, SiO₂ nanofluids have potential engineering applications for weakening the mechanical properties of coal and improving the water-injection effect in coal seams. The nanoparticle size is a pivotal factor that affects the properties of nanofluids. Herein, nanoindentation tests and scanning electron microscopy were utilized to probe the variations in the mesomechanical parameters of coal samples treated using nanofluids with various SiO₂ particle sizes. It is demonstrated that the mechanical parameters of coal treated with disparately sized nanoparticles exhibit a drastic diminishment, followed by a rebound increase. The fundamental mechanical parameters of the coal samples treated with 30 nm nanoparticles present the most prominent change. Simultaneously, the degree of plastic damage of the coal after the nanoparticle modification treatment gradually enlarge, corresponding to a downward trend in the proportion of the elastic potential energy of the coal, which can remarkably lower the degree of energy release. Furthermore, large-size nanoparticles adsorbed on the surface of each group of coals readily agglomerate together due to their size to block the fractures. The SiO₂ nanoparticles with a diameter of 30 nm can be noticeably adsorbed and aggregated inside the pore space of the coal, which could subsequently imbibe an overwhelming amount of water and notably loosen the adhesion among mineral particles, thereby lessening the binding force, and thus enforcing the degradation of mechanical properties. The research achievements are helpful in advancing the rational selection of nanoparticle parameters in nanofluid enhanced water injection.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"188 ","pages":"Article 106056"},"PeriodicalIF":7.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}