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The Numerical Analysis in Rock
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The Numerical Analysis in Rock

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

Deadline for manuscript submissions: closed (20 June 2022) | Viewed by 7132

Special Issue Editors

Dr. Mikhail O. Eremin

E-Mail Website
Guest Editor
Laboratory of Mechanics of Heterogeneous Media, Russian Academy of Sciences, Leninskiy Prospekt, 14, Moscow, Russia
Interests: rock mechanics; mining science; fracture; plasticity; numerical modeling
Prof. Dr. Pavel V. Makarov

E-Mail Website
Guest Editor
Institute of Strength Physics and Materials Science SB RAS, Laboratory of Mechanics of Heterogeneous Media, Russian Academy of Sciences, Akademicheskii prospekt, 2/4, Tomsk, Russia
Interests: nonlinear dynamics; geodynamics; solid mechanics

Special Issue Information

Dear Colleagues,

We are pleased to launch this Special Issue of Applied Sciences devoted to numerical analysis of rocks. The Special Issue aims to bring together high-quality research results of urgent practical significance in different engineering fields, such as (though not limited to) mining, oil and gas engineering, and construction. Contributions regarding deformation and fracture of rocks subjected to different external forces are welcome. Coupled problems of fluid–solid interaction and the thermomechanical loading of rocks are of special interest. New approaches for the experimental characterization of rocks, such as computer tomography, acoustic emission, etc., during uniaxial, conventional and true triaxial tests, will be considered, which can help the development of constitutive and numerical models.

Dr. Mikhail O. Eremin
Prof. Dr. Pavel V. Makarov
Guest Editors

Manuscript Submission Information

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Keywords

  • rock mechanics
  • coupled problems
  • numerical modeling

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Published Papers (3 papers)

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Research

14 pages, 5328 KiB  
Article
Strata Movement of the Thick Loose Layer under Strip-Filling Mining Method: A Case Study
by Qingliang Chang, Xingjie Yao, Qiang Leng, Hao Cheng, Fengfeng Wu, Huaqiang Zhou and Yuantian Sun
Appl. Sci. 2021, 11(24), 11717; https://doi.org/10.3390/app112411717 - 9 Dec 2021
Cited by 9 | Viewed by 2587
Abstract
Filling mining plays an important role in controlling surface subsidence. To study the movement of overburdened rock in filling mining under thick loose layers, a numerical simulation combing field measurement in CT30101 working face in the Mahuangliang coal mine was tested. The results [...] Read more.
Filling mining plays an important role in controlling surface subsidence. To study the movement of overburdened rock in filling mining under thick loose layers, a numerical simulation combing field measurement in CT30101 working face in the Mahuangliang coal mine was tested. The results show that different filling rates and filling body strength have different influences on roof and surface movement. The filling rate has a greater impact, which is the main control factor. The filling stress and roof tensile stress decrease gradually with roadway filling. The filling body stress and roof tensile stress in the first and second rounds are far greater than in the fourth round. After the completion of filling, the first and second round of filling bodies mainly bear the overburden, and the total deformation of the surrounding rock of the main transport roadway is very small, and therefore the displacement of the overburdened rock is controllable. The field monitoring results also show that the overburdened rock became stable after several fillings rounds. Combing the numerical modeling and field tests results, this study can be a guideline for similar geological conditions especially for coal mining under thick loose layers and thin bedrock. Full article
(This article belongs to the Special Issue The Numerical Analysis in Rock)
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13 pages, 8414 KiB  
Article
Compressive Behavior of Oil Shale with Calcareous Concretion: Parametric Study
by Jinxing Lyu, Jisen Shu, Liu Han, Gerson S. V. Tovele and Tao Chen
Appl. Sci. 2021, 11(23), 11244; https://doi.org/10.3390/app112311244 - 26 Nov 2021
Viewed by 1787
Abstract
The non-uniformly distributed calcareous concretion among the oil shale in the Junggar basin of China has led to the difficulty in achieving the slope stability. This paper presents the numerical simulation of the behavior of oil shale with calcareous concretion via the Particle [...] Read more.
The non-uniformly distributed calcareous concretion among the oil shale in the Junggar basin of China has led to the difficulty in achieving the slope stability. This paper presents the numerical simulation of the behavior of oil shale with calcareous concretion via the Particle Flow Code (PFC2D) program based on the trial experimental test results. The critical parameters investigated in this research covered the size, distribution, strength, and number of the calcareous concretion. The following conclusions can be drawn based on the discussions and analysis: (1) the hard concretion always results in the high compressive strength of the specimen compared with that without concretion; (2) when the radius of the concretion size raised from 2.5 mm to 20 mm, the peak strength of tested specimens is approximately 50 MPa, whereas, the specimen with large concretion is much more ductile under compression; (3) the compressive behavior of tested specimens is similar even when the position of the concretion is variable; and (4) different from the specimens with only one concretion, these specimens contained two concretions featured with the double “X” failure mode. Meanwhile, the peak strength of the specimens with two hard concretions is about 2.5 times that of its counterparts with two soft concretions. The numerical simulation results are meaningful in guiding the design and analysis of the oil shale slope with the concretion. Full article
(This article belongs to the Special Issue The Numerical Analysis in Rock)
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20 pages, 9734 KiB  
Article
An Energy-Based Discrete Element Modeling Method Coupled with Time-Series Analysis for Investigating Deformations and Failures of Jointed Rock Slopes
by Xiaona Zhang, Gang Mei, Ning Xi, Ziyang Liu and Ruoshen Lin
Appl. Sci. 2021, 11(12), 5447; https://doi.org/10.3390/app11125447 - 11 Jun 2021
Cited by 1 | Viewed by 1981
Abstract
The discrete element method (DEM) can be effectively used in investigations of the deformations and failures of jointed rock slopes. However, when to appropriately terminate the DEM iterative process is not clear. Recently, a displacement-based discrete element modeling method for jointed rock slopes [...] Read more.
The discrete element method (DEM) can be effectively used in investigations of the deformations and failures of jointed rock slopes. However, when to appropriately terminate the DEM iterative process is not clear. Recently, a displacement-based discrete element modeling method for jointed rock slopes was proposed to determine when the DEM iterative process is terminated, and it considers displacements that come from rock blocks located near the potential sliding surface that needs to be determined before the DEM modeling. In this paper, an energy-based discrete element modeling method combined with time-series analysis is proposed to investigate the deformations and failures of jointed rock slopes. The proposed method defines an energy-based criterion to determine when to terminate the DEM iterative process in analyzing the deformations and failures of jointed rock slopes. The novelty of the proposed energy-based method is that, it is more applicable than the displacement-based method because it does not need to determine the position of the potential sliding surface before DEM modeling. The proposed energy-based method is a generalized form of the displacement-based discrete element modeling method, and the proposed method considers not only the displacement of each block but also the weight of each block. Moreover, the computational cost of the proposed method is approximately the same as that of the displacement-based discrete element modeling method. To validate that the proposed energy-based method is effective, the proposed method is used to analyze a simple jointed rock slope; the result is compared to that achieved by using the displacement-based method, and the comparative results are basically consistent. The proposed energy-based method can be commonly used to analyze the deformations and failures of general rock slopes where it is difficult to determine the obvious potential sliding surface. Full article
(This article belongs to the Special Issue The Numerical Analysis in Rock)
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