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Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11)

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (30 December 2021) | Viewed by 14347

Printed Edition Available!
A printed edition of this Special Issue is available here.

Special Issue Editors

Prof. Dr. Chun Zhu

E-Mail Website
Guest Editor
School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
Interests: rock mechanics; geological hazard monitoring; surrounding rock support; slope stability; tunneling and excavation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zhigang Tao

E-Mail Website
Guest Editor
State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Interests: rock mechanics; geological hazard monitoring; surrounding rock support; slope stability
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xiaojie Yang

E-Mail Website
Guest Editor
State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Interests: mining engineering; rock support
Dr. Jianping Sun

E-Mail Website
Guest Editor
School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
Interests: deep excavation; ground improvement; deep foundations; instrumentation and monitoring; slope stability; rock cavern excavation and rock grouting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 11th Asian Rock Mechanics Symposium (ARMS 11) will be held in Beijing, China,  October 21–25，2021. The theme for ARMS 11 is “Challenges and Opportunities in Rock Mechanics and Engineering”. The technical program will focus on advances and innovative applied research on rock mechanics and rock engineering. It will provide a showcase of recent developments and advances in rock mechanics and innovative applications in rock engineering. It will offer an international forum for exchanging new ideas and exploring the future directions in rock mechanics and engineering. Short courses, workshops, industrial exhibitions and technical visits will also be organized.

This Special Issue aims to provide an important contribution by presenting state-of-the-art knowledge with the relationship between rock mechanics and energy exploitation. Furthermore, we are particularly welcoming ARMS 11 papers that address new technology with underground energy exploitation. Topics include but are not limited to:

  1. Latest theory and method in rock mechanics;
  2. Laboratory and field testing techniques;
  3. Numerical methods in rock mechanics and numerical modeling;
  4. Rock engineering design;
  5. Field investigation and monitoring techniques;
  6. Rock dynamics;
  7. Soft rock engineering;
  8. Underground disposal of nuclear waste;
  9. Earthquake and geological disaster prevention and mitigation;
  10. Protection and reinforcement of ancient sites;
  11. Mining engineering;
  12. Tunnel and underground space;
  13. Rockslide and engineered slope;
  14. Carbon emission reduction and geological sequestration;
  15. Case studies for rock engineering;
  16. Reservoir geomechanics and geological environment effect;
  17. Rock burst and pressure bump;
  18. Clean energy development;
  19. New frontiers and interdisciplinary fields;
  20. Progress in geotechnical engineering information technology and its application;
  21. Geotechnical engineering technology;
  22. Challenges in rock mechanics in large-scale hydropower engineering;
  23. Karst engineering and rock soil anchoring and new technologies of grouting;
  24. Geo-energy engineering;
  25. Deformation, reinforcement and in situ stress measurement of coal mass.

Prof. Dr. Chun Zhu
Prof. Dr. Zhigang Tao
Prof. Dr. Xiaojie Yang
Dr. Jianping Sun
Guest Editors

Manuscript Submission Information

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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. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • Rock mechanics
  • Mining engineering
  • Slope stability
  • Tunnel engineering
  • Energy exploitation
  • Underground energy exploitation

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Published Papers (6 papers)

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Editorial

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3 pages, 151 KiB  
Editorial
Challenges and Opportunities in Rock Mechanics and Engineering—An Overview
by Chun Zhu, Xiaojie Yang, Zhigang Tao and Jianping Sun
Energies 2022, 15(3), 807; https://doi.org/10.3390/en15030807 - 22 Jan 2022
Cited by 1 | Viewed by 2467
Abstract
The problem of rock mechanics and engineering is an old and new subject encountered by human beings in their struggle with nature for survival and development [...] Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))

Research

Jump to: Editorial

18 pages, 11978 KiB  
Article
Microcrack Porosity Estimation Based on Rock Physics Templates: A Case Study in Sichuan Basin, China
by Chuantong Ruan, Jing Ba, José M. Carcione, Tiansheng Chen and Runfa He
Energies 2021, 14(21), 7225; https://doi.org/10.3390/en14217225 - 2 Nov 2021
Cited by 4 | Viewed by 1729
Abstract
Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, [...] Read more.
Low porosity-permeability structures and microcracks, where gas is produced, are the main characteristics of tight sandstone gas reservoirs in the Sichuan Basin, China. In this work, an analysis of amplitude variation with offset (AVO) is performed. Based on the experimental and log data, sensitivity analysis is performed to sort out the rock physics attributes sensitive to microcrack and total porosities. The Biot–Rayleigh poroelasticity theory describes the complexity of the rock and yields the seismic properties, such as Poisson’s ratio and P-wave impedance, which are used to build rock-physics templates calibrated with ultrasonic data at varying effective pressures. The templates are then applied to seismic data of the Xujiahe formation to estimate the total and microcrack porosities, indicating that the results are consistent with actual gas production reports. Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))
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27 pages, 28700 KiB  
Article
Evaluation of Ground Motion Amplification Effects in Slope Topography Induced by the Arbitrary Directions of Seismic Waves
by Chao Yin, Wei-Hua Li and Wei Wang
Energies 2021, 14(20), 6744; https://doi.org/10.3390/en14206744 - 16 Oct 2021
Cited by 10 | Viewed by 2542
Abstract
The incident directions of seismic waves can change the ground motions of slope topography. To elaborate on the influences of the directions of seismic waves, a dynamic analysis of the slope topography was performed. Seismic waves were input using an equivalent nodal force [...] Read more.
The incident directions of seismic waves can change the ground motions of slope topography. To elaborate on the influences of the directions of seismic waves, a dynamic analysis of the slope topography was performed. Seismic waves were input using an equivalent nodal force method combined with a viscous-spring artificial boundary. The amplification of ground motions in double-faced slope topographies was discussed by varying the angles of incidence. Meanwhile, the components of seismic waves (P waves and SV waves), slope materials and slope geometries were all investigated with various incident earthquake waves. The results indicated that the pattern of the amplification of SV waves was stronger than that of P waves in the slope topography, especially in the greater incident angels of the incident waves. Soft materials intensely aggravate the acceleration amplification, and more scattered waves are produced under oblique incident earthquake waves. The variations in the acceleration amplification ratios on the slope crest were much more complicated at oblique incident waves, and the ground motions were underestimated by considering only the vertical incident waves. Therefore, in the evaluation of ground motion amplification of the slope topography, it is extremely important to consider the direction of incident waves. Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))
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19 pages, 5302 KiB  
Article
Seismic Response Analysis of Tunnel through Fault Considering Dynamic Interaction between Rock Mass and Fault
by Guoqing Liu, Yanhong Zhang, Junqing Ren and Ming Xiao
Energies 2021, 14(20), 6700; https://doi.org/10.3390/en14206700 - 15 Oct 2021
Cited by 7 | Viewed by 1586
Abstract
In order to explore the influences of fault dislocations on tunnel stability under seismic action, a nonlinear dynamic simulation method for the rock–fault contact system is proposed. First, considering the deterioration effect of seismic action on the ultimate bearing load of the contact [...] Read more.
In order to explore the influences of fault dislocations on tunnel stability under seismic action, a nonlinear dynamic simulation method for the rock–fault contact system is proposed. First, considering the deterioration effect of seismic action on the ultimate bearing load of the contact interface between rock mass and fault, a mathematical model is established reflecting the seismic deterioration laws of the contact interface. Then, based on the traditional point-to-point contact type in a geometric mesh, a point-to-surface contact type is also considered, and an improved dynamic contact force method is established, which considers the large sliding characteristics of the contact interface. According to the proposed method, a dynamic finite element calculation for the flow of the rock–fault contact system is designed, and the accuracy of the method is verified by taking a sliding elastic block as an example. Finally, a three-dimensional (3D) calculation model for a deep tunnel through a normal fault is built, and the nonlinear seismic damage characteristics of the tunnel under horizontal seismic action are studied. The results indicate that the relative dislocation between the rock mass and the fault is the main factor that results in lining damage and destruction. The seismic calculation results for the tunnel considering the dynamic interaction between the rock mass and the fault can more objectively reflect the seismic response characteristics of practical engineering. In addition, the influences of different fault thicknesses and dip angles on the seismic response of the tunnel are discussed. This work provides effective technical support for seismic fortification in a tunnel through fault. Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))
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14 pages, 9247 KiB  
Article
The Deformation Characteristics and Lateral Stress of Roadside Crushed Rocks with Different Particles in Non-Pillar Coal Mining
by Qiong Wang, Zhibiao Guo, Chun Zhu, Songyang Yin and Dawei Yin
Energies 2021, 14(13), 3762; https://doi.org/10.3390/en14133762 - 23 Jun 2021
Cited by 4 | Viewed by 1825
Abstract
Gob-side entry retaining formed by roof fracturing (GERRF) is a popular non-pillar mining method. The method uses crushed rocks in gob side to support and control the movements of the gob roof. These crushed rocks will deform under roof pressure and generate desirable [...] Read more.
Gob-side entry retaining formed by roof fracturing (GERRF) is a popular non-pillar mining method. The method uses crushed rocks in gob side to support and control the movements of the gob roof. These crushed rocks will deform under roof pressure and generate desirable lateral stress on support structures of gangue rib. In this study, the deformation behavior of crushed mudstones with different particle sizes under incremental loading was investigated with an innovative experimental device that simulated boundary conditions of the GERRF method. Influence of particle size of the crushed mudstones to the generation of lateral stress applied on support structures were concurrently observed and analyzed. Research outputs from the tests showed that: (1) The particle size exerted a significant influence on the accumulated axial deformation, period axial deformation, and lateral stress applied on support structure of crushed rocks. (2) Under the same axial stress, the larger the particle size, the smaller the accumulated axial deformation of the crushed rock; A skeletal loading-bearing effect was apparent in the rock samples with larger particles (S-2, S-3). The compressive deformation process of samples S-2, S-3 divided into structural adjustment, skeletal load-bearing and crushing cum filling phases. At skeletal loading-bearing phase, the crushed rocks showed better deformation resistance and stability than other phases; (3) Two types of periodic stress-strain curves were observed for crushed mudstones in the tests. The “down-concave” type implied the deformation for the crushed mudstones was primarily a consequence of the compression in the void spaces. While the “upper-convex” type curve was resulted in particle crushing cum filling again; (4) The lateral pressure generated by large-size samples was smaller than that of small-size samples. Additionally, a poor regularity of lateral stress was observed in compression test of large-size sample (S-3). The relationship between the axial stress and lateral stress generated on the support structure was found to be approximately linear relationship under the condition that lateral pressure shows good regularity. Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))
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18 pages, 11676 KiB  
Article
Effects of Kaolin Addition on Mechanical Properties for Cemented Coal Gangue-Fly Ash Backfill under Uniaxial Loading
by Faxin Li, Dawei Yin, Chun Zhu, Feng Wang, Ning Jiang and Zhen Zhang
Energies 2021, 14(12), 3693; https://doi.org/10.3390/en14123693 - 21 Jun 2021
Cited by 16 | Viewed by 2433
Abstract
In this investigation, six groups of cemented coal gangue-fly ash backfill (CGFB) samples with varying amounts of kaolin (0, 10, 20, 30, 40, and 50%) instead of cement are prepared, and their mechanical properties are analyzed using uniaxial compression, acoustic emission, scanning electron [...] Read more.
In this investigation, six groups of cemented coal gangue-fly ash backfill (CGFB) samples with varying amounts of kaolin (0, 10, 20, 30, 40, and 50%) instead of cement are prepared, and their mechanical properties are analyzed using uniaxial compression, acoustic emission, scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The uniaxial compressive strength, peak strain, and elastic modulus of CGFB samples decreased with the kaolin content. The average uniaxial compressive strength, elastic modulus, and peak strain of CGFB samples with 10% amount of kaolin are close to that of CGFB samples with no kaolin. The contribution of kaolin hydration to the strength of CGFB sample is lower than that of cement hydration, and the hydration products such as ettringite and calcium-silicate-hydrate gel decrease, thereby reducing strength, which mainly plays a role in filling pores. The contents of kaolin affect the failure characteristics of CGFB samples, which show tensile failure accompanied by local shear failure, and the failure degree increases with the kaolin content. The porosity of the fracture surface shows a decreasing trend as a whole. When the amount of kaolin instead of cement is 10%, the mechanical properties of CGFB samples are slightly different from those of CGFB samples without kaolin, and CGFB can meet the demand of filling strength. The research results provide a theoretical basis for the application of kaolin admixture in fill mining. Full article
(This article belongs to the Special Issue Selected Papers from the 11th Asian Rock Mechanics Symposium (ARMS 11))
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