International Journal of Rock Mechanics and Mining Sciences最新文献

{"title":"Gas permeability characteristics and pore structure evolution of sandstones with high-temperature damage effects","authors":"Jiang-Feng Liu,&nbsp;Hong-Yang Ni,&nbsp;Xu Chen,&nbsp;Shi-Jia Ma,&nbsp;Zhi-Peng Wang,&nbsp;Rui-Nian Sun","doi":"10.1016/j.ijrmms.2025.106277","DOIUrl":"10.1016/j.ijrmms.2025.106277","url":null,"abstract":"<div><div>This study investigates the gas permeability characteristics and pore structure evolution of fine-grained sandstone under high-temperature conditions. Sandstone specimens were subjected to temperatures ranging from 20 °C to 800 °C, followed by gas permeability, scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), and X-ray diffraction (XRD) tests. The results indicate that gas permeability demonstrates a three-stage variation with temperature: a gradual increase up to 400 °C due to the expansion of mineral grains and dehydration, a reduction from 400 °C to 600 °C associated with pore closure and microstructural collapse, and a dramatic increase beyond 600 °C driven by thermal cracking and mineral decomposition. The confining pressure significantly influenced gas permeability, exhibiting a reduction of over 90 % at pressures above 50 MPa across all temperatures. The Klinkenberg slip effect, characterized by enhanced gas flow in low-permeability pores, was prominent at low gas pressures but diminished with increasing gas pressure, suggesting critical thresholds for slip behavior under thermal effects. Porosity increased exponentially with temperature, particularly after 500 °C, as new pores and microcracks formed. Microstructural analysis revealed that high temperatures led to the transformation of kaolinite into mixed-layer illite, which played a pivotal role in altering pore structures and gas permeability. These findings provide a systematic understanding of the coupled thermal-mechanical effects on sandstone and have implications for geothermal energy extraction, underground coal gasification, and other subsurface engineering applications.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106277"},"PeriodicalIF":7.5,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049517","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":"Geochemical experimental study on the alteration of granite pore structures under CO2-H2O-rock interactions in CO2-enhanced geothermal systems","authors":"Jiajie Yang ,&nbsp;J.G. Wang ,&nbsp;Peibo Li ,&nbsp;Thomas Hermans","doi":"10.1016/j.ijrmms.2025.106274","DOIUrl":"10.1016/j.ijrmms.2025.106274","url":null,"abstract":"<div><div>In CO₂-enhanced geothermal systems (CO₂-EGS), geochemical reactions among CO₂, H₂O and rock dynamically alter pore structures through mineral dissolution/precipitation even with a small amount of water. However, the governing mechanisms remain poorly quantified. This study investigates the CO₂-H₂O-rock interactions of granite under different reaction temperatures and reaction times. The mineral composition and micro-morphology evolution of granite were analyzed by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM), and the evolution of pore structure and the effects of reaction temperature and reaction time were investigated through mercury intrusion porosimetry (MIP), nitrogen adsorption test, and carbon dioxide adsorption test. Key findings reveal that (1) the content of quartz and biotite decreased, while feldspar and secondary minerals (calcite/kaolinite/dolomite) showed dynamic changes; (2) Mineral precipitation reduced pore diameters and even sealed fracture, whereas dissolution enhanced connectivity by expanding effective pore volume; (3) Mesopores and micropores exhibited the increase of specific surface area but decreased average pore diameter, with pore surfaces homogenizing but the three-dimensional complexity intensifying. Crucially, all changes positively correlated with reaction temperature and/or reaction time, establishing a tunable relationship for CO₂-EGS operation. These results resolve critical uncertainties in pore-structure evolution, offering actionable insights for improving CO₂ storage and geothermal extraction efficiency.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106274"},"PeriodicalIF":7.5,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145049514","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":"A simple nonlinear constitutive model for rocks and its application to the semi-analytical solution of deeply buried tunnels","authors":"Yaolan Tang ,&nbsp;Dapeng Wang ,&nbsp;Jianchun Li ,&nbsp;Chunshun Zhang ,&nbsp;Luming Shen","doi":"10.1016/j.ijrmms.2025.106255","DOIUrl":"10.1016/j.ijrmms.2025.106255","url":null,"abstract":"<div><div>In this study, a simple yet robust nonlinear constitutive model for rocks is proposed to capture their unique mechanical behaviors under various loading conditions. The model has three key innovations, including an axial strength evolution equation using normalized variables for simulating crack closure, pre-peak, and post-peak responses, a tangent Poisson's ratio formulation for capturing lateral deformation transition, and a strength reduction concept replacing conventional damage parameters. The model provides an analytical solution for stress–strain relationships, facilitating efficient implementation and avoiding complex plasticity-based stress integration. Its accuracy and versatility are validated by comparisons with the experiment on rocks under various loading conditions. Moreover, the model has been applied to calculate the semi-analytical solution for deeply buried tunnels, showing its potential in geotechnical engineering and serving as an effective alternative to conventional elastoplastic models for rock behavior modeling.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106255"},"PeriodicalIF":7.5,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018455","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":"Long-term evolution mechanisms of permeability during gas injection for enhanced coalbed methane recovery","authors":"Lei Yang ,&nbsp;Chaojun Fan ,&nbsp;Mingkun Luo ,&nbsp;Quanle Zou ,&nbsp;Ce Jia ,&nbsp;Qiwang Sun ,&nbsp;Zhiheng Cheng","doi":"10.1016/j.ijrmms.2025.106257","DOIUrl":"10.1016/j.ijrmms.2025.106257","url":null,"abstract":"<div><div>Understanding the long-term evolution of permeability during gas (N₂ or CO₂) injection for enhanced CBM recovery (G-ECBM) is of great significance for improving CBM recovery efficiency and achieving effective CO₂ sequestration. This study develops a thermo-hydro-mechanical (THM) coupled model to comprehensively capture the mechanical response, fluid transport, and thermal variations during G-ECBM. The model is validated and subsequently employed to elucidate the long-term evolution mechanisms of permeability under N₂ and CO₂ injection from the standpoint of coal strain. N₂-ECBM significantly improves CH₄ recovery rate, but the rapid breakthrough of N₂ reduces CH₄ concentration. In contrast, the recovery rate of CO₂-ECBM is lower than that of N₂-ECBM, but it maintains a relatively high CH₄ concentration consistently. At early stage of N₂-ECBM, the permeability decreases near production well (PW) as effective stress increases, while the permeability increases near injection well (IW) as effective stress decreases. Later, coal seam permeability increases as effective stress decreases and CH₄ desorption. For CO₂-ECBM, early permeability near PW shows minimal change as effective stress increases offsets CH₄ desorption, while later stages see reduces driven by CO₂ adsorption. Near IW, early permeability increases due to CH₄ desorption outweighs CO₂ adsorption, but later declines as CO₂ adsorption becomes stronger. The offer provides a basis for optimizing injection strategies and improving recovery rate.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106257"},"PeriodicalIF":7.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933456","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":"Microparticle transport and clogging mechanisms in 3D complex rock fractures based on coupled lattice Boltzmann and discrete element method simulations","authors":"Siyuan Wang ,&nbsp;Peng Hou ,&nbsp;Quansheng Liu ,&nbsp;Guijie Sang ,&nbsp;Xin Liang ,&nbsp;Fakai Dou ,&nbsp;Feng Gao","doi":"10.1016/j.ijrmms.2025.106259","DOIUrl":"10.1016/j.ijrmms.2025.106259","url":null,"abstract":"<div><div>Microparticle transport in rock fractures is widespread in both natural and industrial settings, playing a crucial role in hydrocarbon production, geothermal extraction, and pollutant migration. Compared to macroparticles, microparticles exhibit unique transport characteristics due to significant microscale forces, such as adhesion, traction, and aggregation. However, the mechanisms governing microparticle transport, retention, and deposition in complex and narrow fractures under microscale forces remain unclear, which may lead to misjudgments of microparticle migration distance and clog conditions. In this study, we develop an analytical lattice Boltzmann method-discrete element method (LBM-DEM) coupling model that incorporates the retarded van der Waals force to accurately reproduce these processes. The accuracy is validated against experimental results of microparticle cluster settling, and the necessity of softening the Hamaker constant when calculating van der Waals forces is demonstrated. To examine the effects of aperture variations and surface undulations, we established two fracture models: planar fractures with variable aperture and rough fractures with constant aperture. Simulations indicate that in planar fractures, clogging is induced by particle clusters, with deposition in the narrowing segment serving as a precursor to clogging events. In rough fractures, clogging also occurs, but is caused by the monolayer adhesion of particles to the fracture surface. The van der Waals force increases the number of arch-forming particles in planar fractures, while in rough fractures, it reduces overall transport distance and enhances particle distribution heterogeneity. An increase in the narrowing segment angle weakens gravity-driven settling, accelerating fracture sealing. Higher roughness and concentration, as well as smaller apertures, promote large-scale clogging at the inlet and intensify preferential flow.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106259"},"PeriodicalIF":7.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144988892","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":"Numerical modeling for rockbursts in circular tunnels using a nodal-based continuous-discontinuous deformation analysis method","authors":"Yu-Yong Jiao ,&nbsp;Wenan Wu ,&nbsp;Gao-Feng Zhao ,&nbsp;Fei Zheng ,&nbsp;Hong Zheng ,&nbsp;Shanyong Wang","doi":"10.1016/j.ijrmms.2025.106253","DOIUrl":"10.1016/j.ijrmms.2025.106253","url":null,"abstract":"<div><div>As a complex phenomenon induced by underground excavation, rockburst poses a severe threat to the construction and operation of deep tunnels. Since rockburst involves dynamic response of large deformation and rigid movement, discontinuum-based numerical schemes are more suitable for assessing rockburst risks. By enhancing mesh generation and contact modeling, a node-based continuous-discontinuous analysis (NCDDA) method is presented for assessment of rockburst. Indestructible and destructible regions are introduced to divide computational domains to model failure of jointed rock masses and reduce computational costs. The indestructible region merely involves continuum modeling, while joint elements with a bilinear constitutive relation are used to model failure of the destructible region. Contact model based on the contact potential is used to further enhance the computational performance. Introducing the viscous boundary and element deactivation technique, dynamic processes involving large deformation, failure and fracturing induced by tunnel excavation can be simulated by the NCDDA efficiently and accurately. Benchmark simulations verify capability of the NCDDA in modeling dynamic and quasi-static response, rock fracturing and rockburst. Influences of strength parameters and exposed structural planes on the rockburst occurrence time and zone are also investigated. Simulations show that internal friction and cohesion rank the first and second most influential factors. As the internal friction increases, rockburst occurrence delays and rockburst zone expands. Structural planes can result in rockburst in advance. The less the dip angle, the earlier the rockburst occurrence. Rise rate of the consumed energy in breaking joint elements is mainly influenced by the internal friction.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106253"},"PeriodicalIF":7.5,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921697","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":"Artificial intelligence in rock mechanics","authors":"Gao-Feng Zhao,&nbsp;Yuhang Wu","doi":"10.1016/j.ijrmms.2025.106245","DOIUrl":"10.1016/j.ijrmms.2025.106245","url":null,"abstract":"<div><div>Artificial Intelligence (AI) has great potential to transform rock mechanics by tackling its inherent complexities, such as anisotropy, nonlinearity, discontinuousness, and multiphase nature. This review explores the evolution of AI, from basic neural networks like the BP model to advanced architectures such as Transformers, and their applications in areas like microstructure reconstruction, prediction of mechanical parameters, and addressing engineering challenges such as rockburst prediction and tunnel deformation. Machine learning techniques, particularly Convolutional Neural Networks (CNNs) and Generative Adversarial Networks (GANs), have been crucial in automating tasks like fracture detection and efficiently generating 3D digital rock models. However, the effectiveness of AI in rock mechanics is limited by data scarcity and the need for high-quality datasets. Hybrid approaches, such as combining physics-informed neural networks (PINNs) with traditional numerical methods, offer promising solutions for solving governing equations. Additionally, Large Language Models (LLMs) are emerging as valuable tools for code generation and decision-making support. Despite these advancements, challenges remain, including issues with reproducibility, model interpretability, and adapting AI models to specific domains. Future progress will hinge on the availability of improved datasets, greater interdisciplinary collaboration, and the integration of spatial intelligence frameworks to bridge the gap between AI's theoretical potential and its practical application in rock engineering.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106245"},"PeriodicalIF":7.5,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916504","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":"Fracture aperture evolution in subsurface fractured reservoirs: Insights from thermo-hydro-mechanical simulations and implications for field-scale applications","authors":"Fan Zeng ,&nbsp;Hui Wu ,&nbsp;Kun Zhang ,&nbsp;Yujie Liu","doi":"10.1016/j.ijrmms.2025.106254","DOIUrl":"10.1016/j.ijrmms.2025.106254","url":null,"abstract":"<div><div>Subsurface energy recovery and storage involves continuous fluid injection into fractured rock formations. The efficiency of these applications highly depends on the evolution of fracture characteristics under thermo-hydro-mechanical (THM) coupled processes induced by fluid injection. In this study, we established a single-fracture THM model to quantitatively analyze the combined and individual contributions of overpressure (OP), poroelastic (PE), and thermoelastic (TE) effects on fracture aperture evolution. The competition among OP, PE and TE effects is examined under various fracture/rock parameters and confining pressure/injection temperature conditions. Core-scale simulations demonstrate that OP, PE, and TE effects reach equilibrium within hours, with PE effect exerting the most dominant influence on fracture aperture. The relative dominance of these effects exhibits strong dependence on injection temperature, Biot coefficient, and rock elastic modulus. Comparative analysis with typical core flow-through experimental data qualitatively reveals the potential effects of water-rock reactions on fracture aperture. We find that under low confining pressures, the TE effect is stronger than the effect of water-rock reactions, leading to fracture aperture increase in response to cold fluid injection, while under high confining pressures, water-rock reactions dominate and cause fracture aperture decrease. Compared with core-scale simulation, field-scale simulations reveal fundamentally different fracture behavior marked by persistent THM disequilibrium and sustained spatial heterogeneity in aperture evolution, and therefore highlight the necessity to explicitly account for scale effect when extrapolating core-scale observations to field conditions.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106254"},"PeriodicalIF":7.5,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916503","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":"Coupled geomechanical investigation of depletion-induced fault reactivation","authors":"Ying Xin ,&nbsp;Ki-Bok Min ,&nbsp;Jeoung Seok Yoon ,&nbsp;Fengshou Zhang ,&nbsp;Jonny Rutqvist","doi":"10.1016/j.ijrmms.2025.106240","DOIUrl":"10.1016/j.ijrmms.2025.106240","url":null,"abstract":"<div><div>Fault reactivation during subsurface fluid production pose significant challenges to safe and sustainable resource extraction. This study presents a three-dimensional coupled geomechanical framework to investigate the processes driving fault reactivation, capturing the interactions between reservoir dynamics and geomechanical responses. Verification against theoretical estimations based on linear poroelasticity confirms the model's capacity in representing reservoir background stress responses. However, the study reveals that relying solely on background stress states can underestimate or overestimate fault reactivation potential, emphasizing the importance of including localized stress perturbations such as differential compaction and stress redistribution. Applied to a fault (M1) inspired by the geological characteristics of the Groningen field, the model shows slip initiation at 2965 m depth with 16.0 MPa depletion, aligning with field observations where seismicity occurred at approximately 3 km depth after 15.8 MPa depletion. Parametric studies reveal: (1) inelastic reservoir compaction delays fault reactivation and mitigates fault slip by reducing stress concentration, (2) higher intermediate in-situ stress magnitudes decrease the Coulomb Failure Stress (CFS) increase rate and reduce fault slip, (3) larger fault offsets amplify shear stress near the offset zone, promoting earlier reactivation and longer rupture propagation, and (4) fault permeability significantly influences pressure diffusion, with low-permeability faults leading to sharper stress changes and earlier fault destabilization. These insights highlight the critical role of geological and mechanical parameters in fault reactivation and provide a predictive framework for mitigating induced seismicity risks.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106240"},"PeriodicalIF":7.5,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913314","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":"Endo-exo classification of episodic rock creep in underground mines: Implications for forecasting violent rockbursts","authors":"Qinghua Lei ,&nbsp;Daniel Francois Malan ,&nbsp;Didier Sornette","doi":"10.1016/j.ijrmms.2025.106251","DOIUrl":"10.1016/j.ijrmms.2025.106251","url":null,"abstract":"<div><div>Rock masses in deep underground environments under high in-situ stress often exhibit episodic creep behavior, driven by complex interactions between external perturbation and internal reorganization. The causes of these creep episodes and their link to potential catastrophic failure remain poorly understood. Here, we present a novel “endo-exo” framework for analyzing episodic rock creep in underground mines, capturing the interplay between exogenous triggers (e.g., blasting and excavation) and endogenous processes (e.g., damage and healing within rock masses). The underlying physical mechanism involves cascades of locally triggered rock block movements due to fracturing and sliding. We identify four fundamental types of episodic dynamics, classified by the origin of disturbance (endogenous or exogenous) and the level of criticality (subcritical or critical). All four types exhibit power law relaxations with distinct exponents: 1+<em>θ</em> (exogenous-subcritical), 1-<em>θ</em> (exogenous-critical), 1‒2<em>θ</em> (endogenous-critical), and 0 (endogenous-subcritical), all governed by a single parameter 0 &lt; <em>θ</em> &lt; 1. Our theoretical predictions are examined using the comprehensive dataset of a platinum mine in South Africa, where stopes display episodic closure behavior during successive mining operations. All creep episodes recorded can be accounted for in our classification with <em>θ</em> ≈ 0.35 ± 0.1, providing strong validation of our theory. This <em>θ</em> value is interpreted in terms of a first-passage process driven by anomalous stress diffusion, represented by fractional Brownian motion or Lévy-type processes. Finally, we offer new insights into endo-exo interactions and the system's transition from episodic creep to catastrophic failure, with important implications for forecasting violent rockbursts.</div></div>","PeriodicalId":54941,"journal":{"name":"International Journal of Rock Mechanics and Mining Sciences","volume":"195 ","pages":"Article 106251"},"PeriodicalIF":7.5,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913313","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}