Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.5
2.7
Journals
Applied Sciences
Special Issues
Mechanical Properties and Fracture Behavior of Rocks
share announcement

Mechanical Properties and Fracture Behavior of Rocks

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

Deadline for manuscript submissions: closed (20 August 2022) | Viewed by 8165

Special Issue Editors

Dr. Hao Cheng

E-Mail Website
Guest Editor
School of Civil Engineering, Wuhan University, Wuhan 430072, Hubei, China
Interests: rock mechanics; fracture mechanics; XFEM; stability analysis of rock slopes
Dr. Yundong Shou

E-Mail Website
Guest Editor
School of Civil Engineering, Wuhan University, Wuhan 430072, Hubei, China
Interests: rock mechanics; fracture mechanics; peridynamics; multi-field coupling of rock masses
Dr. Junwei Chen

E-Mail Website
Guest Editor
School of Civil Engineering, Wuhan University, Wuhan, China
Interests: fracture mechanics; dynamic problems; FEM; XFEM; phase field
Prof. Dr. Xiaoping Zhou

E-Mail Website
Guest Editor
School of Civil Engineering, Chongqing University, Chongqing, China
Interests: rock mechanics; fracture mechanics; numerical simulations

Special Issue Information

Dear Colleagues,

Over the last few decades, with the increasing engineering activities on mining and construction in complex geological environments (e.g., deep mining, construction in cold regions, and construction of nuclear waste repositories), the stability of rock engineering under various geological environments has attracted attention both from academics and engineering practice. It is well known that rock masses contain a number of flaws at multiple scales, such as cracks, joints, and faults, varying from the microscopic to macroscopic, which are induced during the initial formation stage of rock masses and successive tectonic motion processes. The mechanical behavior of rock masses is controlled by mechanical properties and fracture behavior of rocks. Therefore, research on mechanical properties and fracture behavior of rocks is required. Research from theoretical analyses and experimental tests to numerical simulations must be conducted to tackle this issue.

The aim of this Special Issue is to gather original fundamental and applied research concerning mechanical properties and fracture behavior of rocks, such as creep behavior, dynamic properties, damage and crack evolution in rocks, joint properties, the freeze–thaw cycle, water–rock interaction, seepage in fracture network, fracture behavior, thermal shock, numerical methods for crack evolution, etc. Both original research papers and review articles are welcome.

Potential topics include but are not limited to the following:

  • Numerical and experimental methods for crack evolution in rocks;
  • Damage and crack evolution in rocks;
  • Creep behavior and large squeezing deformation;
  • Dynamic properties of rocks subjected to fracture behavior and large squeezing deformation;
  • Stability analysis of rock slopes and tunnels;
  • Acoustic emission technology to track rock cracks;
  • Failure criteria of rocks;
  • Microscopic mechanism of rock failure;
  • Seepage evolution in fracture networks;
  • Mechanical properties of rocks under complex stress conditions.

Dr. Hao Cheng
Dr. Yundong Shou
Dr. Junwei Chen
Prof. Dr. Xiaoping Zhou
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

  • numerical methods
  • experimental methods
  • damage and crack evolution
  • stability analysis
  • AE technology
  • failure criteria
  • microscopic mechanism
  • seepage evolution
  • complex stress condition
  • joint properties
  • dynamic properties

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

14 pages, 2232 KiB  
Article
A Finite Element Analysis of Tunnel Lining Demolition by Blasting for Subway Tunnel Expansion
by Jie Zhou, Pengyu Shu, Bin Zhang, Baowang Deng and Yi Wu
Appl. Sci. 2022, 12(19), 9564; https://doi.org/10.3390/app12199564 - 23 Sep 2022
Cited by 2 | Viewed by 1418
Abstract
In this paper, a practical project of subway tunnel lining demolition via blasting for the construction of a subway station under the action of the blasting load and the weight of collapsed rock mass was proposed. The tunnel overbreak and underbreak quality, the [...] Read more.
In this paper, a practical project of subway tunnel lining demolition via blasting for the construction of a subway station under the action of the blasting load and the weight of collapsed rock mass was proposed. The tunnel overbreak and underbreak quality, the failure mechanism of the tunnel lining structure, the particle peak velocity (PPV), and the stress evolution law of the surrounding rock caused by tunnel blasting were researched using LS-DYNA. Firstly, the results show that the blasting parameters presented in this paper can maintain the cross-section of a smooth outline of tunnel excavation and the overbreak or underbreak quality in control. Secondly, the tensile stress in the existing tunnel lining caused by blasting exceeded the concrete tensile strength, and the radius of the burst fracture was 0.86 m, which is greater than the thickness of the tunnel lining (0.7 m). Thirdly, the blasting stress in the surrounding rock peaked within 0.1 × 10−3 s after the blasting, and failure of the surrounding rock occurred. Moreover, the relationship between the PPV and the distance from the blasting center shows that the blasting parameters used in this paper can effectively control the PPV. Therefore, this study reveals that the expansion of existing tunnels into subway stations using this method can improve the efficiency of construction. Full article
(This article belongs to the Special Issue Mechanical Properties and Fracture Behavior of Rocks)
►▼ Show Figures

Figure 1

19 pages, 7913 KiB  
Article
The Effect of the Petrography, Mineralogy, and Physical Properties of Limestone on Mode I Fracture Toughness under Dry and Saturated Conditions
by Sajad Safari Farrokhad, Gholam Reza Lashkaripour, Nasser Hafezi Moghaddas, Saeed Aligholi and Mohanad Muayad Sabri Sabri
Appl. Sci. 2022, 12(18), 9237; https://doi.org/10.3390/app12189237 - 15 Sep 2022
Cited by 3 | Viewed by 1121
Abstract
Determining the fracture toughness of rock materials is a challenging, costly, and time-consuming task, as fabricating a sharp crack in rock specimens will lead to failure of the specimen, and preparing specimens for determining the rock fracture toughness requires special equipment. In this [...] Read more.
Determining the fracture toughness of rock materials is a challenging, costly, and time-consuming task, as fabricating a sharp crack in rock specimens will lead to failure of the specimen, and preparing specimens for determining the rock fracture toughness requires special equipment. In this paper, the relationship between mode I fracture toughness (KIC) with the rock index properties, mineralogy, and petrography of limestone is investigated using simple nonlinear and simple/multiple linear regression analyses to provide alternative methods for estimating the fracture toughness of limestones. The cracked chevron notched Brazilian disk (CCNBD) method was applied to 30 limestones with different petrographic and mineralogical characteristics under both dry and saturated conditions. Moreover, the index properties of the same rocks, including the density, porosity, electrical resistivity, P and S wave velocities, Schmidt rebound hardness, and point load index, were determined. According to the statistical analyses, a classification based on the petrography of the studied rocks was required for predicting the fracture toughness from index properties. By classifying the limestones based on petrography, reliable relationships with high correlations can be introduced for estimating the fracture toughness of different limestones using simple tests. Full article
(This article belongs to the Special Issue Mechanical Properties and Fracture Behavior of Rocks)
►▼ Show Figures

Figure 1

18 pages, 7530 KiB  
Article
Experimental and Numerical Investigation of the Damage Characteristics of Rocks under Ballistic Penetration
by Xiaojing Zhang, Wenjin Yao, Xiaoming Wang, Wei Zhu, Zhenyu Lu, Xintao Zhu and Hongxin Huang
Appl. Sci. 2022, 12(12), 6120; https://doi.org/10.3390/app12126120 - 16 Jun 2022
Cited by 2 | Viewed by 1366
Abstract
Rock penetration is an inevitable problem in the study of drilling and projectile penetration. The penetration resistance of red sandstone and limestone was investigated at projectile speeds ranging from 600–1200 m/s. The damage characteristics of these rocks were studied via experimental tests and [...] Read more.
Rock penetration is an inevitable problem in the study of drilling and projectile penetration. The penetration resistance of red sandstone and limestone was investigated at projectile speeds ranging from 600–1200 m/s. The damage characteristics of these rocks were studied via experimental tests and numerical simulations. The damage condition of the target surface, internal damage state and crack distribution were obtained. It was concluded that the maximum error of the numerical simulation and experimental results was not more than 10%. The penetration resistance of limestone was approximately 23.8% stronger than that of red sandstone. However, the energy absorption effect of limestone was weaker than that of red sandstone, and large cracks can be more easily formed. The compaction area of red sandstone was softer, with obvious crack compaction in the crater area, and particle detachment can more easily occur. Red sandstone was more sensitive to the impact angle of the projectile. With oblique penetration, the projectile was more likely to deflect inside the red sandstone target. Full article
(This article belongs to the Special Issue Mechanical Properties and Fracture Behavior of Rocks)
►▼ Show Figures

Figure 1

16 pages, 5467 KiB  
Article
Mechanical Properties and Failure Mechanism of Granite with Maximum Free Water Absorption under Triaxial Compression
by Yaoyao Zhang, Yangbing Cao, Zhijun Li, Yangtao Chen and Zhenping Huang
Appl. Sci. 2022, 12(8), 3930; https://doi.org/10.3390/app12083930 - 13 Apr 2022
Cited by 2 | Viewed by 1452
Abstract
Granite in underground water-sealed storage caverns has usually been immersed for a long time. The immersion affects the mechanical properties and failure mechanism of granite with maximum free water absorption; therefore, it is crucial to study the behavior of granite under different confining [...] Read more.
Granite in underground water-sealed storage caverns has usually been immersed for a long time. The immersion affects the mechanical properties and failure mechanism of granite with maximum free water absorption; therefore, it is crucial to study the behavior of granite under different confining pressures for engineering construction. A triaxial compression test with maximum free water absorption was conducted on granite and its mechanical properties were analyzed. A fracture scanning electron microscope test was carried out to analyze the microstructural characteristics and reveal the failure mechanism. The test results showed that the differential stress-axial strain curve can be divided into the initial compaction stage, the elastic deformation stage, the plastic deformation stage, and the post-peak strain-softening stage. With an increase in confining pressure, the duration of the initial compaction stage decreased, while the plastic deformation stage and the peak strength and peak strain stages increased. For the confining pressure range of 0–20 MPa, the peak stress difference of granite with maximum free water absorption was between 146.0 and 307.6 MPa. The elastic modulus was between 31.36 and 44.18 GPa. The cohesion (c) of the rock sample studied was 26.84 MPa and the internal friction angle (φ) was 51°. The failure mechanism of granite is tensile–shear composite failure, predominantly with tensile failure under low confining pressure regimes, and the inclined fracture surface is mainly due to shear failure under high confining pressure conditions. These research results provide updated reference data for rock engineering involving granitic mechanical properties and failure mechanisms in submerged caverns. Full article
(This article belongs to the Special Issue Mechanical Properties and Fracture Behavior of Rocks)
►▼ Show Figures

Figure 1

15 pages, 2919 KiB  
Article
Degradation of Mechanical Behavior of Sandstone under Freeze-Thaw Conditions with Different Low Temperatures
by Jingwei Gao, Chao Xu, Yan Xi and Lifeng Fan
Appl. Sci. 2021, 11(22), 10653; https://doi.org/10.3390/app112210653 - 12 Nov 2021
Cited by 5 | Viewed by 1506
Abstract
This study investigated the effects of freezing temperature under freeze-thaw cycling conditions on the mechanical behavior of sandstone. First, the sandstone specimens were subjected to 10-time freeze-thaw cycling treatments at different freezing temperatures (−20, −40, −50, and −60 °C). Subsequently, a series of [...] Read more.
This study investigated the effects of freezing temperature under freeze-thaw cycling conditions on the mechanical behavior of sandstone. First, the sandstone specimens were subjected to 10-time freeze-thaw cycling treatments at different freezing temperatures (−20, −40, −50, and −60 °C). Subsequently, a series of density, ultrasonic wave, and static and dynamic mechanical behavior tests were carried out. Finally, the effects of freezing temperature on the density, P-wave velocity, stress–strain curves, static and dynamic uniaxial compressive strength, static elastic modulus, and dynamic energy absorption of sandstone were discussed. The results show that the density slightly decreases as temperature decreases, approximately by 1.0% at −60 °C compared with that at 20 °C. The P-wave velocity, static and dynamic uniaxial compressive strength, static elastic modulus, and dynamic energy absorption obviously decrease. As freezing temperature decreases from 20 to −60 °C, the static uniaxial compressive strength, static elastic modulus, dynamic strength, and dynamic energy absorption of sandstone decrease by 16.8%, 21.2%, 30.8%, and 30.7%, respectively. The dynamic mechanical behavior is more sensitive to the freezing temperature during freeze-thawing cycling compared with the static mechanical behavior. In addition, a higher strain rate can induce a higher dynamic strength and energy absorption. Full article
(This article belongs to the Special Issue Mechanical Properties and Fracture Behavior of Rocks)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop