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Processes
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Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical...
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Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition)

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 2004

Special Issue Editors

Dr. Chenxi Ding

E-Mail Website
Guest Editor
Department of Civil Engineering, School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Interests: rock mechanics; blasting engineering; dynamic fracture; experimental technique; numerical simulation
Special Issues, Collections and Topics in MDPI journals
Dr. Chun Feng

E-Mail Website
Guest Editor
Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.
Interests: continuous discontinuous numerical methods and software; explosion and shock waves; rock fracture and fragmentation; rock engineering and digital twin
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Chun Liu

E-Mail Website
Guest Editor
School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China.
Interests: discrete element method; numerical simulation; rock mechanics; multi-field coupling
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Liyun Yang

E-Mail Website
Guest Editor
Department of Geotechnical Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Interests: rock fragmentation; rock mechanics; blasting engineering; dynamic fracture; TBM; shaft and tunnel
Special Issues, Collections and Topics in MDPI journals
Dr. Jianguo Wang

E-Mail Website
Guest Editor
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650031, China
Interests: rock dynamic mechanics; blasting theory; blasting experiment technique; engineering application of blasting technology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rock is a composite geological structure that is heterogeneous, anisotropic, discontinuous, and has internal stress. Its structure also includes many rock units with different mechanical properties, and each unit itself is often heterogeneous, anisotropic, and discontinuous. It can be seen that the mechanical properties of rock are far more complex compared to those of other materials. Any scientific experiment, theoretical analysis, and calculation of rock mechanics must consider these characteristics, which constitute the basic starting point of rock mechanics research. Rock mechanics is a discipline that studies the stress, strain, failure, stability, and reinforcement of rock under the action of external factors (such as load, water flow, temperature change, etc.). With the utilization of underground space, the development of underground power stations (hydropower stations, thermal power stations, nuclear power stations), the development of mineral resources and energy sources, and transportation, research on rock mechanics is increasingly turning towards having an underground focus. Therefore, more attention will be paid to rock mechanics problems related to underground engineering in the future, such as rapid construction technology, rock burst, gas explosion, and the in situ monitoring of surrounding rock.

This Special Issue, entitled “Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering”, aims to cover recent advances in the development and application of rock mechanics. Topics of interest include, but are not limited to, methods and/or applications in the following areas:

  • Efficient numerical simulation method for rock mechanics;
  • Numerical simulation of rock and soil mass behavior under different loading conditions, especially impact or blast loading;
  • Modeling of soil–fluid interaction and its influence on rock behavior;
  • Computational geomechanics for underground excavations and tunnels;
  • New construction techniques and engineering applications in geotechnical engineering;
  • Numerical simulation of the development process of geothermal, oil, gas, and other underground resources.

Dr. Chenxi Ding
Dr. Chun Feng
Prof. Dr. Chun Liu
Prof. Dr. Liyun Yang
Dr. Jianguo Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • rock mechanics
  • geotechnical engineering
  • complex reservoir
  • numerical simulation
  • soil–fluid interaction
  • construction techniques

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Published Papers (4 papers)

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Research

11 pages, 4988 KB  
Article
Study on the Fracture Characteristics and Mechanisms of Iron Ore Under Dynamic Loading
by Yilin Tian, Peng Xu, Hua Li, Junjie Li, Shiqing Zhou, Yanting Chen, Xuyang Chang and Zhibo Lin
Processes 2025, 13(11), 3436; https://doi.org/10.3390/pr13113436 - 26 Oct 2025
Viewed by 249
Abstract
The dynamic fracture process of iron ore under blast loading is an important manifestation of ore fragmentation. To investigate the dynamic fracturing process of iron ore, Hopkinson bar experiments were conducted under different impact loads. The results indicate that under low strain rates, [...] Read more.
The dynamic fracture process of iron ore under blast loading is an important manifestation of ore fragmentation. To investigate the dynamic fracturing process of iron ore, Hopkinson bar experiments were conducted under different impact loads. The results indicate that under low strain rates, the dynamic stress–strain curve of iron ore exhibits compaction, elastic, and failure stages. However, as the strain rate increases, the compaction stage becomes less distinct, while the elastic modulus decreases and the failure strength increases, indicating the material toughness was enhanced at high strain rate. Moreover, under high strain rates, a significant increase in shear strain promotes the formation of tensile–shear cracks in the ore. In addition, based on the fragmentation of iron ore at different impact pressure, there exists a certain impact pressure, at which the proportion of large fragments decreases only slightly, while the amount of small fragments increases markedly. These findings provide important insights for optimizing fragmentation and improving blasting effectiveness. Full article
(This article belongs to the Special Issue Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition))
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15 pages, 2318 KB  
Article
Experimental Investigation on the Characteristic Stress and Energy Evolution Law of Carbonaceous Shale: Effects of Dry–Wet Cycles, Confining Pressure, and Fissure Angle
by Yu Li, Shengnan Li, Xianglong Liu, Aiguo Jiang and Dongge Cui
Processes 2025, 13(11), 3399; https://doi.org/10.3390/pr13113399 - 23 Oct 2025
Viewed by 139
Abstract
To investigate characteristic stress and energy evolution law of carbonaceous shale under dry–wet cycles and fissure angle, several samples with prefabricated fissure angles were prepared and subjected to the coupled influence of dry–wet cycles and loading. The results show that the closure stress, [...] Read more.
To investigate characteristic stress and energy evolution law of carbonaceous shale under dry–wet cycles and fissure angle, several samples with prefabricated fissure angles were prepared and subjected to the coupled influence of dry–wet cycles and loading. The results show that the closure stress, initiation stress, damage stress, and peak stress gradually increase with the increase in confining pressure, effectively suppressing the initiation and propagation of the crack. At the same time, the total energy, elastic energy, and dissipated energy at the crack characteristic stress are enhanced by a linear function relationship, significantly improving the bearing capacity and energy storage capacity of carbonaceous shale. The dry–wet cycle is regarded as the driving force of damage, reducing the crack characteristic stress and the total energy, elastic energy, and dissipated energy of crack characteristic stress. This results in a weakened capacity of the rock samples to store elastic strain energy, ultimately contributing to the damage degradation of carbonaceous shale. The anisotropic damage of rock is controlled by fissure angle. The crack characteristic stress and the total energy, elastic energy, and dissipated energy of crack characteristic stress with a 45° fissure angle is the smallest. Finally, the energy storage level at the damage stress (Kcd) can be used as an early warning indicator for rock failure. Full article
(This article belongs to the Special Issue Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition))
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18 pages, 5006 KB  
Article
Hazardous Gas Emission Laws in Tunnels Based on Gas–Solid Coupling
by Yansong Li, Peidong Su, Li Luo, Yougui Li, Weihua Liu and Junjie Yang
Processes 2025, 13(10), 3308; https://doi.org/10.3390/pr13103308 - 16 Oct 2025
Viewed by 324
Abstract
This study investigates the mechanisms of hazardous gas outbursts in geologically complex non-coal tunnels. This is a critical safety concern during excavation, particularly at specific locations and during time-sensitive periods. To address this, a gas–solid coupled numerical model is established to simulate gas [...] Read more.
This study investigates the mechanisms of hazardous gas outbursts in geologically complex non-coal tunnels. This is a critical safety concern during excavation, particularly at specific locations and during time-sensitive periods. To address this, a gas–solid coupled numerical model is established to simulate gas seepage processes under such conditions. The simulations systematically reveal the spatiotemporal evolutionary patterns of the velocity and direction of the gas seepage and elucidate the migration mechanism driven by excavation-induced pressure gradients. The model specifically analyzes how geological structures, such as rock joints and fractures, control the seepage pathways. The model also demonstrates the dynamic variations in and enrichment behavior of the gas escape velocities near these discontinuities. Field measurements obtained from the Hongdoushan Tunnel validated the simulated emission patterns along jointed fissures. The findings clarify the intrinsic relationships between the outburst dynamics and key factors that include pressure differentials, geological structures, and temporal effects. This work provides a crucial theoretical foundation and practical strategy for the prediction and prevention of hazardous gas disasters in analogous tunnel engineering projects, thereby enhancing overall construction safety. Full article
(This article belongs to the Special Issue Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition))
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13 pages, 5457 KB  
Article
Study on the Disintegration Resistance of Different Types of Schist on the Eastern Slope of the Tongman Open-Pit Mine
by Yiming Wen, Xiangdong Niu, Yongfeng Lu, Yong Cheng, Ping Lu, Jianbo Xia, You Lin, Li Tang, Qi Nie and Kaishan Lin
Processes 2025, 13(3), 915; https://doi.org/10.3390/pr13030915 - 20 Mar 2025
Viewed by 565
Abstract
This study aimed to investigate the disintegration resistance of schist on the eastern slope of the Tongman open-pit mine. It examined the effects of cycle number and mineral composition on the disintegration resistance indexes of four types of schist through thin section identification [...] Read more.
This study aimed to investigate the disintegration resistance of schist on the eastern slope of the Tongman open-pit mine. It examined the effects of cycle number and mineral composition on the disintegration resistance indexes of four types of schist through thin section identification and laboratory disintegration resistance tests. Furthermore, we analyzed the morphological characteristics of the disintegration residues using laboratory tests. Based on pore micro-damage theory, the mechanisms responsible for the differences in disintegration resistance among the four types of schist were further explored. The results show a negative correlation between the disintegration resistance index and the number of cycles. For the same number of cycles, the disintegration resistance indices for the four schist types were ranked as follows: greenish-gray chlorite-bearing muscovite schist > gray weakly chloritized biotite–muscovite schist > greenish-gray muscovite schist > gray muscovite schist. The disintegration residues of schist samples were categorized into four morphological patterns: thin sheet-like, moderately thick sheet-like, blocky, and granular. These patterns were then thoroughly elucidated. The differences in the disintegration resistance characteristics of schist were closely related to their material composition. The microstructural pore damage within the rock is the essential factor causing schist disintegration. Variations in rock porosity led to differing damage factors, which explain the distinct disintegration resistance characteristics observed across the four types of schist. The proposed preventive measures, developed through a systematic analysis of schist disintegration mechanisms, provide an effective framework for slope stability management. This research offers valuable insights into the weathering characteristics of rock masses in slope engineering, which is significant for understanding the progressive failure modes of disintegrating metamorphic formations. Full article
(This article belongs to the Special Issue Numerical Simulation and Engineering Application of Rock Mechanics and Geotechnical Engineering (Second Edition))
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