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Applied Sciences
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Rock Mechanics in Geotechnical and Tunnel Engineering
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Rock Mechanics in Geotechnical and Tunnel Engineering

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 3405

Special Issue Editors

Dr. Yun Lin

E-Mail Website
Guest Editor
School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Interests: multi-field coupling rock mechanics; intelligent early warning and control of geotechnical disasters
Special Issues, Collections and Topics in MDPI journals
Dr. Chun Yang

E-Mail Website
Guest Editor
Department of Mining Engineering, Central South University, Changsha 410083, China
Interests: numerical modelling; microwave-assisted rock breakage; mining; rock mechanics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rock mechanics is the scientific study of the deformation and failure behavior of rocks under external forces, which directly relates to the stability and safety of geotechnical and tunnel engineering. It plays an irreplaceable role in the design, construction, and operation of engineering projects. With the development of industry, the acceleration of urbanization, and the deepening of underground space utilization, higher requirements have been put forward for the safety and reliability of geotechnical and tunnel engineering. Simultaneously, there is a continuous pursuit of higher economic benefits and lower environmental costs. Therefore, research and application of rock mechanics have become particularly important. By focusing on the frontier issues of rock mechanics in geotechnical and tunnel engineering fields, this theme aims to enrich the theory of rock mechanics, enhance the stability analysis level of geotechnical engineering, and provide scientific support for underground space development such as tunnels and mineral resource exploitation.

This Special Issue will cover a wide range of topics relating to the rock mechanics in geotechnical and tunnel engineering. We invite scientists and investigators to contribute original research and review articles, addressing the main issues facing the field.

Potential topics include but are not limited to the following:

  1. Geotechnical engineering detection technology;
  2. Rock blasting and excavation methods;
  3. Geotechnical challenges in underground tunneling;
  4. Application of machine learning in geotechnical and tunnel engineering;
  5. Rheological instability mechanism of surrounding rock mass of deep water-rich tunnels;
  6. Study on the mechanism and prevention of water inrush disasters in tunnels;
  7. Multiscale, multifield, and continuum–discontinuum analysis in geomechanics;
  8. Large-scale modeling and high-performance calculation of geotechnical and tunnel engineering;
  9. Thermal–wet–mechanical–chemical multi-field coupling analysis and experiments;
  10. Rock burst and microseismicity;
  11. Shield tunnel construction.

Dr. Yun Lin
Dr. Chun Yang
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. Applied Sciences is an international peer-reviewed open access semimonthly 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 engineering
  • mechanical behavior
  • geotechnical and tunnel engineering
  • underground space
  • numerical modelling
  • monitoring technology
  • blasting techniques
  • big data analytics
  • stability assessment
  • machine learning and artificial intelligence

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Published Papers (5 papers)

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Research

19 pages, 11597 KiB  
Article
Roughness Evolution of Granite Flat Fracture Surfaces during Sliding Processes
by Hengtao Yang, Bing Bai and Hang Lin
Appl. Sci. 2024, 14(13), 5935; https://doi.org/10.3390/app14135935 - 8 Jul 2024
Viewed by 500
Abstract
Roughness is an essential factor affecting the shear process of discontinuous surfaces, and the evolution of roughness is closely related to the mechanical behavior of discontinuous surfaces. In this paper, with the help of granite specimens, a direct shear test was carried out [...] Read more.
Roughness is an essential factor affecting the shear process of discontinuous surfaces, and the evolution of roughness is closely related to the mechanical behavior of discontinuous surfaces. In this paper, with the help of granite specimens, a direct shear test was carried out on flat fracture surfaces obtained by sawing in order to study the evolution of roughness with shear slip. During the tests, the roughness evolution was evaluated using the arithmetic mean, root mean square and power spectral density of the roughness. The variation in these parameters all indicate that the friction surface with large slip tends to be rougher, at least under the loading conditions in this paper. And the increase in normal force will enhance this process, while the loading rate seems to have little effect on the roughness evolution. Finally, the analysis of the power spectral density shows that the roughness evolution in the spatial frequency of the profile line is mainly reflected in the middle– and low–frequency part, while the high–frequency part corresponding to the microscopic roughness body does not change much throughout the shear process. Full article
(This article belongs to the Special Issue Rock Mechanics in Geotechnical and Tunnel Engineering)
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24 pages, 4194 KiB  
Article
Deep Learning in Rockburst Intensity Level Prediction: Performance Evaluation and Comparison of the NGO-CNN-BiGRU-Attention Model
by Hengyu Liu, Tianxing Ma, Yun Lin, Kang Peng, Xiangqi Hu, Shijie Xie and Kun Luo
Appl. Sci. 2024, 14(13), 5719; https://doi.org/10.3390/app14135719 - 29 Jun 2024
Cited by 2 | Viewed by 858
Abstract
Rockburst is an extremely hazardous geological disaster. In order to accurately predict the hazardous degree of rockbursts, this paper proposes eight new classification models for predicting the intensity level of rockbursts based on intelligent optimisation algorithms and deep learning techniques and collects 287 [...] Read more.
Rockburst is an extremely hazardous geological disaster. In order to accurately predict the hazardous degree of rockbursts, this paper proposes eight new classification models for predicting the intensity level of rockbursts based on intelligent optimisation algorithms and deep learning techniques and collects 287 sets of real rockburst data to form a sample database, in which six quantitative indicators are selected as feature parameters. In order to validate the effectiveness of the constructed eight machine learning prediction models, the study selected Accuracy, Precision, Recall and F1 Score to evaluate the prediction performance of each model. The results show that the NGO-CNN-BiGRU-Attention model has the best prediction performance, with an accuracy of 0.98. Subsequently, engineering validation of the model is carried out using eight sets of real rockburst data from Daxiangling Tunnel, and the results show that the model has a strong generalisation ability and can satisfy the relevant engineering applications. In addition, this paper also uses SHAP technology to quantify the impact of different factors on the rockburst intensity level and found that the elastic strain energy index and stress ratio have the greatest impact on the rockburst intensity level. Full article
(This article belongs to the Special Issue Rock Mechanics in Geotechnical and Tunnel Engineering)
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17 pages, 3982 KiB  
Article
Numerical Simulation Study on the Deformation Patterns of Surrounding Rock in Deeply Buried Roadways under Seepage Action
by Xuebin Xie and Liang Li
Appl. Sci. 2024, 14(12), 5276; https://doi.org/10.3390/app14125276 - 18 Jun 2024
Viewed by 431
Abstract
To reveal the deformation patterns of the surrounding rock in deeply buried straight-wall arch-shaped roadways under seepage action, this study, based on an FLAC3D numerical simulation and classic elastoplastic theory, investigates the influences of surrounding rock classification, roadway burial depth, pore water pressure, [...] Read more.
To reveal the deformation patterns of the surrounding rock in deeply buried straight-wall arch-shaped roadways under seepage action, this study, based on an FLAC3D numerical simulation and classic elastoplastic theory, investigates the influences of surrounding rock classification, roadway burial depth, pore water pressure, and roadway cross-sectional dimensions on the deformation of surrounding rock. A multivariate regression prediction model for rock deformation was established based on the numerical simulation conclusions, and the correctness of the conclusions was verified through comparative analysis. Correlation analysis of various factors with rock deformation was conducted, ranking their impact as follows: pore water pressure > roadway burial depth > surrounding rock classification > roadway height > roadway width. The research results can provide guidance for the construction and support of deeply buried roadways under seepage action. Full article
(This article belongs to the Special Issue Rock Mechanics in Geotechnical and Tunnel Engineering)
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16 pages, 12403 KiB  
Article
Dynamic Responses and Failure Characteristics of Deep Double U-Shaped Caverns under Disturbing Loads
by Lisha Liang, Xibing Li and Zhixiang Liu
Appl. Sci. 2024, 14(11), 4543; https://doi.org/10.3390/app14114543 - 25 May 2024
Viewed by 497
Abstract
The instability of double-cavern structure subjected to dynamic disturbances is a key issue for deep rock engineering. To investigate the dynamic responses of deep double U-shaped caverns, comprehensive analyses are conducted by Particle Flow Code (PFC2D), and the influences of incident directions of [...] Read more.
The instability of double-cavern structure subjected to dynamic disturbances is a key issue for deep rock engineering. To investigate the dynamic responses of deep double U-shaped caverns, comprehensive analyses are conducted by Particle Flow Code (PFC2D), and the influences of incident directions of stress wave, cavern clearances, and cavern height ratios are discussed. The results indicate that the decreasing cavern clearance aggravates the static stress concentration on the intermediate rock pillar. When the stress wave is horizontally incident, the presence of the incident side cavern reduces peak tangential stress and kinetic energy on the non-incident side cavern; the higher the incident side cavern, the less damage on the non-incident side cavern. A vertically incident stress wave causes more severe damage in the intermediate rock pillar compared to a horizontally incident stress wave; the smaller the cavern clearance, the more violent the rockburst in the intermediate rock pillar. Comparatively, the cavern with a lower height exhibits more severe failure at the adjacent sidewall compared to the cavern with a higher height. This work can provide guidelines for disaster prevention of deep double-cavern structures. Full article
(This article belongs to the Special Issue Rock Mechanics in Geotechnical and Tunnel Engineering)
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23 pages, 12552 KiB  
Article
Effect of Jointed Rock Mass on Seismic Response of Metro Station Tunnel-Group Structures
by Ruozhou Li and Yong Yuan
Appl. Sci. 2024, 14(10), 4080; https://doi.org/10.3390/app14104080 - 11 May 2024
Viewed by 550
Abstract
A jointed rock mass (JRM) is the usual case in practical engineering, which has significant effects on its mechanical performance. To clarify the difference in the seismic responses of underground structures in JRM sites or homogeneous rock mass (HRM) sites, two models were [...] Read more.
A jointed rock mass (JRM) is the usual case in practical engineering, which has significant effects on its mechanical performance. To clarify the difference in the seismic responses of underground structures in JRM sites or homogeneous rock mass (HRM) sites, two models were prepared to take shaking table tests in a structural laboratory. The HRM site was prepared following the similitude relations of material; meanwhile, underground structures of a metro station were embedded during the casting of the models. The JRM site and structure were made with the same material but produced random joints after the natural drying process. Different frequencies of harmonics were used to excite along the two models in the transverse or the longitudinal direction, respectively. The dynamic effect was evaluated by time-frequency and frequency-domain analyses. The test results compared with the HRM model indicated that the JRM model had a 22% reduction in the transverse fundamental frequency, but the dynamic response of the ground surface was enhanced due to the effect of the joints. Under harmonic excitations of the same intensity, the JRM model produced a greater energy response to the station structure and reduced the acceleration response of the platform in the high-frequency region. Meanwhile, the JRM model produced a peak tensile strain at the connections of the main and subsidiary structures that was 31% larger than that of the HRM model, and the range of tensile strains observed at the platform connecting the horizontal passage was 1.5 times larger than that of the HRM model. Full article
(This article belongs to the Special Issue Rock Mechanics in Geotechnical and Tunnel Engineering)
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