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Sustainability
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Sustainable Geotechnical Engineering and Rock Mechanics
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Sustainable Geotechnical Engineering and Rock Mechanics

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainability in Geographic Science".

Deadline for manuscript submissions: closed (16 April 2023) | Viewed by 5496

Special Issue Editors

Prof. Dr. Yu Zhao

E-Mail Website
Guest Editor
College of Civil Engineering, Guizhou University, Guiyang 550025, China
Interests: geotechnical engineering; rock mechanics; bridge and tunnel engineering
Prof. Dr. Jing Bi

E-Mail Website
Guest Editor
College of Civil Engineering, Guizhou University, Guiyang 550025, China
Interests: geotechnical engineering; rock mechanics; bridge and tunnel engineering
Prof. Dr. Chaolin Wang

E-Mail Website
Guest Editor
College of Civil Engineering, Guizhou University, Guiyang 550025, China
Interests: geotechnical engineering; rock mechanics; bridge and tunnel engineering

Special Issue Information

Dear Colleagues,

Geotechnical engineering can significantly influence the sustainability of infrastructure development because of its early position in the construction process. Incorporating sustainability into geotechnical construction can set a trend that may result in considerable financial and environmental benefit in the later stages of a project. Sustainable geotechnical engineering aims to ensure the well-being of current and future generations with sustainable geotechnics, covering a wide range of topics related to geo-material recycling, the utilization of geothermal renewable energy, geo-hazard mitigation, mechanical and physical properties of geo-materials, and other aspects of geo-sustainability.

This Special Issue aims to bring together original research and review articles highlighting recent advances and challenges in sustainable geotechnical engineering and rock mechanics.

We welcome submissions focusing on theoretical derivation, numerical modeling, experimental investigation, and field studies at various scales that explore sustainable geotechnical engineering and rock mechanics.

Original research articles and reviews are both welcome for submission. Research areas may include (but are not limited to) the following: theoretical derivation;numerical modelling; experimental investigation; and field studies at various scales that explore sustainable geotechnical engineering and rock mechanics.

We look forward to receiving your contributions.

Prof. Dr. Yu Zhao
Prof. Dr. Jing Bi
Prof. Dr. Chaolin 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. Sustainability 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

  • geosustainability
  • rock mechanics
  • geo-material recycling
  • geothermal renewable energy
  • hot dry rock
  • flow
  • renewable concrete

Published Papers (4 papers)

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Research

26 pages, 6393 KiB  
Article
Precursors of Cyclic Loading and Unloading Sandstone Failure Based on “Acoustic-Thermal” Loading–Unloading Response Ratio
by Hao Xu, Liqiang Ma, Kewang Cao, Naseer Muhammad Khan, Sajjad Hussain, Dongdong Niu, Saad S. Alarifi and Sher Bacha
Sustainability 2023, 15(13), 10158; https://doi.org/10.3390/su151310158 - 26 Jun 2023
Cited by 1 | Viewed by 969
Abstract
Coal mining often causes periodic disruption in the rock mass around the stope. The study of the deformation and failure characteristics of cyclic loading and unloading sandstone is very critical for gaining a thorough understanding of the mechanisms of rock damage, degradation, and [...] Read more.
Coal mining often causes periodic disruption in the rock mass around the stope. The study of the deformation and failure characteristics of cyclic loading and unloading sandstone is very critical for gaining a thorough understanding of the mechanisms of rock damage, degradation, and failure. This kind of investigation is very helpful in determining the precursors of rock failure and the instability of engineering structures. In this research study, the properties of acoustic emission and infrared radiation of cyclic loading and unloading sandstone are explored using a cyclic loading and unloading sandstone experiment. Based on acoustic emission and infrared radiation, the loading–unloading response ratio of rock is established. It is found that the response variables of sandstone during the loading stage based on acoustic emission (AE) counts and the loading–unloading response ratio based on average infrared radiation temperature (AIRT) both rise suddenly in the last cycle, which may be a precursor of “acoustic-thermal” approaching rock failure. On this basis, the quantitative analysis index of infrared radiation of differential infrared energy change rate (DIECR) is proposed, that is, the change of square of ΔAIRT in unit time, and based on AE counts and DIECR, the loading–unloading response ratio of “acoustic-thermal” is defined. It is found that the “acoustic-thermal” loading–unloading response ratio suddenly increases during the penultimate cycle of loading and unloading. This feature can be taken as the initial precursor of rock failure. Together with the “acoustic-thermal” imminent failure precursor of rock, it constitutes the “initial precursor-imminent failure precursor” combined with the internal fracture and surface infrared radiation temperature field during the cyclic loading and unloading process of rock, realizing the hierarchical monitoring and early warning of cyclic loading and unloading rock failure. The research results lay a theoretical and practical foundation for using infrared radiation to monitor engineering disasters caused by rock fracture and failure in mining engineering. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering and Rock Mechanics)
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17 pages, 2966 KiB  
Article
Investigation on the Influence of the Bit Radius and Impact Velocity on Rock Fragmentation by Discrete Element Method
by César Hernández-Vielma, Danilo Estay and Marcela Cruchaga
Sustainability 2023, 15(11), 9051; https://doi.org/10.3390/su15119051 - 3 Jun 2023
Cited by 1 | Viewed by 1023
Abstract
The bit–rock interaction is a key point in the fracture process observed in excavation applications, which makes its analysis relevant. As the discrete element method (DEM) has been successfully applied to study rock breakage behavior, we apply it in the present study to [...] Read more.
The bit–rock interaction is a key point in the fracture process observed in excavation applications, which makes its analysis relevant. As the discrete element method (DEM) has been successfully applied to study rock breakage behavior, we apply it in the present study to analyze various aspects of the bit–rock interaction. This research focuses on numerically analyzing the bit–rock interaction, encompassing the force penetration relationship (FPR), mechanical energy transfer to the rock, and the efficiency of the mechanical energy transfer process. In order to perform this analysis, we simulate various bit radii and impact velocities. In this study, we establish a power–law function to describe the relationship between the energy transferred to the rock and the force, both as functions of bit penetration. The least-squares method is employed to accomplish this determination. Remarkably, it was observed that the latter aligns with the Hertzian contact law when lower impact velocities of the bit are employed. Moreover, a bit-radius-dependent optimal velocity for the mechanical energy transfer process was determined, signifying its significance in the design of excavation tools. The primary conclusion drawn from this research is the quantification of the influence of both the bit impact velocity and the bit radius on the force penetration relationship during the bit–rock interaction. This quantification was achieved by employing the coefficients derived from the regression model established for the FPR. These findings hold practical implications for the enhancement of excavation tools’ efficiency during the design phase, thus contributing to advancements in the field of excavation engineering. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering and Rock Mechanics)
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15 pages, 3335 KiB  
Article
Calculation and Analysis of Pipe Joint Settlement Control in Large Back Silting Immersed Tube Tunnel
by Zhijun Li, Xiabing Yue and Guanqing Wu
Sustainability 2023, 15(9), 7446; https://doi.org/10.3390/su15097446 - 30 Apr 2023
Cited by 2 | Viewed by 1412
Abstract
The use of the segmental pipe section immersed tunnel suffers from several problems, such as complex construction, weak foundation, great water depth, great thickness of siltation back on the top of the tube, and difficult settlement control. Based on Winkel’s elastic foundation beam [...] Read more.
The use of the segmental pipe section immersed tunnel suffers from several problems, such as complex construction, weak foundation, great water depth, great thickness of siltation back on the top of the tube, and difficult settlement control. Based on Winkel’s elastic foundation beam theory, a mechanical calculation model is established according to the case of an inhomogeneous soil layer, and the force and deformation of the structural system of the immersed tube tunnel are calculated based on a bridge in Zhuhai as an example of an immersed tube tunnel. The results show that the derived formula for calculating the allowable differential settlement per unit length of the longitudinally immersed tube is applicable to the sudden change type foundation stiffness deformation model of the natural foundation section of the tube tunnel of the aforementioned bridge in Zhuhai. The relationship between the settlement control index and related influencing factors is analyzed. Hence, a formula for calculating the stratified ground foundation’s integrated bed coefficient is derived, and the equations for tunnel deflection curves and shear forces are solved. A set of calculation methods that are applicable to the foundation settlement control criteria of the segmental immersed tunnel is provided, and the results provide a significant reference for the optimization of the foundation scheme and improvement of the construction process for similar projects. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering and Rock Mechanics)
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14 pages, 6337 KiB  
Article
A Numerical Simulation of the Interaction of Aggregate and Rockfill in a Gangue Fluidized Filling Method
by Jiaqi Wang, Jixiong Zhang, Meng Li, Majid Sartaj and Yunbo Wang
Sustainability 2022, 14(19), 12838; https://doi.org/10.3390/su141912838 - 8 Oct 2022
Cited by 8 | Viewed by 1322
Abstract
To solve the problem of gangue discharge in coal mining, fluidized gangue filling technology was developed. The key scientific problem of this technology is the diffusion characteristics of the gangue in the goaf. Therefore, a discrete element fluidized gangue model was established based [...] Read more.
To solve the problem of gangue discharge in coal mining, fluidized gangue filling technology was developed. The key scientific problem of this technology is the diffusion characteristics of the gangue in the goaf. Therefore, a discrete element fluidized gangue model was established based on the ARR contact model. Based on the Rblock module, a goaf model with a certain void ratio was created, and the meso-parameters of fluidized gangue were calibrated. The fluidized gangue diffusion and rock displacement laws were explored under different grouting speeds, void ratios, and gangue particle sizes. The research results show that with the increase in the grouting speed and void ratio, and the decrease in the gangue particle size, the diffusion radius gradually increases, and the rock displacement in the goaf also gradually increases. Under given geological conditions, the total grouting mass of a single hole can reach 5.63 × 104 kg. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering and Rock Mechanics)
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