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Rock Fracture Mechanics: From Theories to Practices

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

Deadline for manuscript submissions: closed (20 July 2025) | Viewed by 430

Special Issue Editors


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Guest Editor
Institute of Geotechnical and Underground Engineering, Shandong University, Jinan 250061, China
Interests: rock mechanics; fracture mechanism of rock mass; disaster prevention and control methods for tunnel and underground engineering

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Guest Editor
Institute of Geotechnical and Underground Engineering, Shandong University, Jinan 250061, China
Interests: hydraulic fracturing behavior in complex reservoirs; crack propagation under hydro-mechanical coupling; disaster prevention and control methods for tunnel and underground engineering

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Guest Editor
School of Future Technology, Shandong University, Jinan 250061, China
Interests: disaster prevention and control technology for underground engineering; intelligent testing equipment for underground engineering; development of simulation testing system

Special Issue Information

Dear Colleagues,

The study of rock fracture mechanics is the cornerstone of geotechnical and geological engineering, aiming to reveal the mechanical behavior of rocks under complex stress conditions, with a focus on elucidating the mechanisms of crack initiation, propagation, and coalescence. This research field is crucial for supporting various industrial and engineering applications, such as tunnel engineering, mining engineering, reservoir development engineering, etc. The progress in this field has a significant impact on practical methods for evaluating rock stability, designing underground engineering, and mitigating geological hazard risks.

We are pleased to invite you to contribute to this Special Issue on “Rock Fracture Mechanics: From Theories to Practices”. This Special Issue aims to showcase the latest advancements in theoretical frameworks, experimental methodologies, numerical simulations, and practical applications of rock fracture mechanics, fostering a holistic understanding of rock fracture phenomena. By gathering the latest research findings and reviews, we endeavor to increase the knowledge in this multifaceted field.

Suggested themes and article types for submissions:

In this Special Issue, original research articles and reviews are welcome.

Research areas may include (but are not limited to) the following:

  1. Experimental investigations on rock fracture mechanics, including advanced testing techniques and the fracture behavior of novel materials;
  2. Theoretical and numerical modeling approaches to predict crack initiation and propagation in complex geological settings;
  3. Case studies demonstrating the application of rock fracture mechanics principles in engineering projects;
  4. Interdisciplinary research exploring the intersection of rock fracture mechanics with other fields, such as materials science, rock mechanics, and geophysics.

We look forward to receiving your contributions.

Prof. Dr. Lei Yang
Dr. Xiangchao Sheng
Dr. Mengtian Li
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 250 words) can be sent to the Editorial Office for assessment.

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 fracture mechanics
  • crack propagation
  • hydro-mechanical coupling
  • mechanical behavior of fractured rock mass
  • fracture criterion
  • theoretical and numerical modeling

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Published Papers (1 paper)

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Research

24 pages, 1911 KB  
Article
Investigating the Role of Plastic and Poroelastoplastic Effects in Wellbore Strengthening Using a Fully Coupled Hydro-Mechanical Model
by Ernestos N. Sarris and Elias Gravanis
Appl. Sci. 2025, 15(23), 12556; https://doi.org/10.3390/app152312556 (registering DOI) - 26 Nov 2025
Abstract
Wellbore instability during drilling in soft formations often leads to unwanted hydraulic fractures and lost circulation, resulting in non-productive time and elevated costs. The fracture initiation pressure (FIP) and fracture propagation pressure (FPP) are critical for managing these risks, particularly in narrow mud [...] Read more.
Wellbore instability during drilling in soft formations often leads to unwanted hydraulic fractures and lost circulation, resulting in non-productive time and elevated costs. The fracture initiation pressure (FIP) and fracture propagation pressure (FPP) are critical for managing these risks, particularly in narrow mud weight windows, yet industrial models overlook post-plugging stress behaviors at plug locations, where changes in stress concentration may initiate secondary fractures. This study introduces a fully coupled hydro-mechanical plane-strain (KGD) finite element model to examine fluid diffusion and deformation in fractured formations, emphasizing plastic and poroelastoplastic effects for wellbore strengthening. Fluid flow in the fracture follows lubrication theory for incompressible Newtonian fluids, while Darcy’s law governs porous media diffusion. Rock deformation adheres to Biot’s effective stress principle, extended to poroelastoplasticity via the Mohr–Coulomb criterion with associative flow. Simulations yield fracture dimensions, fluid pressures, in situ stress changes, and principal stresses during propagation and plugging, for both plastic and poroplastic cases. A new yield factor is proposed, derived from the Mohr–Coulomb criterion, that quantifies the risk of failure and reveals that fracture tips resist propagation through plastic and poroelastoplastic deformation, with the poroelastoplastic coupling amplifying back-stresses and dilation after plugging. Pore pressure evolution critically influences the fracture growth and plugging efficiency. These findings advance wellbore strengthening by optimizing lost circulation material plugs, bridging the gaps from elastic and poroelastic models, and offer practical tools for safer and more efficient plugging in soft rocks through modeling. Full article
(This article belongs to the Special Issue Rock Fracture Mechanics: From Theories to Practices)
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