1. A Laboratory Observation on the Acoustic Emission Point Cloud Caused by Hydraulic Fracturing, and the Post-pressure Breakdown Hydraulic Fracturing Re-activation due to Nearby Fault

   • Qiquan Xiong
   • Jesse C. Hampton

   Original Paper 14 August 2021 Pages: 5973 - 5992

   

2. A New Perspective on the Brittle–Ductile Transition of Rocks

   • G. Walton

   Original Paper 10 August 2021 Pages: 5993 - 6006

   

3. Correction to: A New Perspective on the Brittle–Ductile Transition of Rocks

   • G. Walton

   Correction 16 October 2021 Pages: 6007 - 6007

4. 3D Observations of Fracturing in Rock-Backfill Composite Specimens Under Triaxial Loading

   • Xin Yu
   • John Kemeny
   • Yuye Tan

   Original Paper 13 August 2021 Pages: 6009 - 6022

   

5. Numerical and Experimental Assessment of the Sandstone Fracture Mechanism by Non-uniform Bonded Particle Modeling

   • Kui Zhao
   • Wenkai Wu
   • Shanhu Ran

   Original Paper 21 August 2021 Pages: 6023 - 6037

   

6. An Improved Smoothed Particle Hydrodynamics Method and Its Application in Rock Hydraulic Fracture Modelling

   • Shuyang Yu
   • Xuhua Ren
   • Zhaohua Sun

   Original Paper 12 August 2021 Pages: 6039 - 6055

   

7. Permeability Evolution Characteristics of Intact and Fractured Shale Specimens

   • Sheng-Qi Yang
   • Peng-Fei Yin
   • Shuai-Bo Xu

   Original Paper 17 August 2021 Pages: 6057 - 6076

   

8. Effect of Triaxial Loading and Unloading on Crack Propagation and Damage Behaviors of Sandstone: An Experimental Study

   • Yan Chen
   • Wenbing Guo
   • Rong Dou

   Original Paper 17 August 2021 Pages: 6077 - 6090

   

9. Mechanical and Permeability Characteristics of Basalt During Unloading Confining Pressure Creep Tests Under Coupled Hydro-Mechanical Conditions

   • Long Yan
   • Weiya Xu
   • Wei-Chau Xie

   Original Paper 27 August 2021 Pages: 6091 - 6103

   

10. Effects of Acid Sulfate and Chloride Ion on the Pore Structure and Mechanical Properties of Sandstone Under Dynamic Loading

    • Xiaoliang Li
    • Zhentang Liu
    • Junjun Feng

    Original Paper 17 August 2021 Pages: 6105 - 6121

    

11. Fast Evaluation of Caprock Strength Sensitivity to Different CO₂ Solutions Using Small Sample Techniques

    • Laura Edvardsen
    • Mohammad H. Bhuiyan
    • Ruben Bjørge

    Original Paper Open access 16 September 2021 Pages: 6123 - 6133

    

12. The Influence of Structural Parameters on the Plugging of Prepacked Gravel Screens

    • Chengyun Ma
    • Jingen Deng
    • Xiaorong Li

    Original Paper 18 August 2021 Pages: 6135 - 6153

    

13. Reconstruction and Sampling Analysis of Parent Fracture Group in Underground Mining

    • Chen Ye
    • Dongming Zhang
    • Han Yang

    Original Paper 19 August 2021 Pages: 6155 - 6172

    

14. Experimental and Numerical Investigation on the Explosive Characteristics of Slotted Cartridges under Different Slotted Structures

    • Yi Li
    • Chuyuan Huang
    • Qi Zhao

    Original Paper 20 August 2021 Pages: 6173 - 6189

    

15. Effective Thermal Conductivity Estimation of Fractured Rock Masses

    • Zheng-Wei Li
    • Yuan Liu
    • Xiao-Kai Wang

    Original Paper 20 August 2021 Pages: 6191 - 6206

    

16. An Extension Strain Type Mohr–Coulomb Criterion

    • Manfred Staat

    Original Paper Open access 20 August 2021 Pages: 6207 - 6233

    

17. Study on the Tooth Load of the Biconical-Profiled Single Cone Bit

    • Rong Deng
    • Anlong Huang
    • Mei An

    Original Paper 15 August 2021 Pages: 6235 - 6248

    

18. Failure Analysis of High-Temperature Granite Under the Joint Action of Cutting and Liquid Nitrogen Jet Impingement

    • Xianwei Dai
    • Zhongwei Huang
    • Chao Xiong

    Original Paper 16 August 2021 Pages: 6249 - 6264

    

19. Modelling of Rock Cutting with Asymmetrical Disc Tool Using Discrete-Element Method (DEM)

    • Grzegorz Stopka

    Original Paper Open access 21 August 2021 Pages: 6265 - 6279

    

20. Evaluation of TBM Cutter Wear in Naghadeh Water Conveyance Tunnel and Developing a New Prediction Model

    • Ghodrat Barzegari
    • Jafar Khodayari
    • Jamal Rostami

    Original Paper 15 September 2021 Pages: 6281 - 6297

    

21. Time Series Prediction of Microseismic Multi-parameter Related to Rockburst Based on Deep Learning

    • Hang Zhang
    • Jun Zeng
    • Ziquan Chen

    Original Paper 21 August 2021 Pages: 6299 - 6321

    

22. Effects of Wetting–Drying Cycles on the Breakage Characteristics of Slate Rock Grains

    • Wei Zhou
    • Jialin Cheng
    • Xiang Ji

    Original Paper 23 August 2021 Pages: 6323 - 6337

    

23. Study on Dynamic Characteristics of Diorite Under Dry–Wet Cycle

    • Jiangbo Xu
    • Haohui Sun
    • Faquan Wu

    Original Paper 11 August 2021 Pages: 6339 - 6349

    

24. Discrete Element Modeling of Permeability Evolution During Progressive Failure of a Low-Permeable Rock Under Triaxial Compression

    • Lingran Zhang
    • Luc Scholtès
    • Frédéric Victor Donzé

    Original Paper 30 August 2021 Pages: 6351 - 6372

    

25. Time-Dependent Deformation Behavior of Completely Weathered Granite Subjected to Wetting Immersion

    • Diyuan Li
    • Shaohua Du
    • Bo Ruan

    Original Paper 03 September 2021 Pages: 6373 - 6391

    

26. Numerical Studies on the Cumulative Damage Effects and Safety Criterion of a Large Cross-section Tunnel Induced by Single and Multiple Full-Scale Blasting

    • Ling Ji
    • Chuanbo Zhou
    • Marte Gutierrez

    Original Paper 03 September 2021 Pages: 6393 - 6411

    

27. Mechanical Properties of Limestone After High-Temperature Treatment Under Triaxial Cyclic Loading and Unloading Conditions

    • Qing-bin Meng
    • Jiang-Feng Liu
    • Cong-kai Wang

    Original Paper 06 September 2021 Pages: 6413 - 6437

    

28. A New Empirical Approach to Assess Wave Velocities and Dynamic Elastic Properties of Several Models of Jointed Rock Before and After Grouting

    • Hussamuddin Moomivand
    • Parviz Maarefvand
    • Hassan Moomivand

    Original Paper 08 September 2021 Pages: 6439 - 6455

    

29. New Insights Brought by Micro-Tomography to Better Understand Gas Transfer Property Variation and Coupling Effects in Salt Rocks

    • Dongmei Zhang
    • Franck Agostini
    • Frédéric Skoczylas

    Original Paper 09 September 2021 Pages: 6457 - 6480

    

30. A Study of Vibration Velocity Attenuation Induced by Pneumatic Rock Breaking with Carbon Dioxide Ice Powder for Safety Assessment

    • Baolin Li
    • Enyuan Wang
    • Bing Liu

    Original Paper 09 September 2021 Pages: 6481 - 6493

    

31. Thermal–Mechanical Modeling of a Rock/Proppant System to Investigate the Role of Shale Creep on Proppant Embedment and Fracture Conductivity

    • Ming Fan
    • Yanhui Han
    • Cheng Chen

    Original Paper 13 September 2021 Pages: 6495 - 6510

    

32. Evaluation of the Diametrical Core Deformation and Discing Analyses for In-Situ Stress Estimation and Application to the 4.9 km Deep Rock Core from the Basel Geothermal Borehole, Switzerland

    • Martin Ziegler
    • Benoît Valley

    Original Paper Open access 14 September 2021 Pages: 6511 - 6532

    

33. Experimental Investigation on the Influence Factors on TBM Cutter Wear Based on Composite Abrasion Test

    • Zhiqiang Zhang
    • Kangjian Zhang
    • Weijie Dong

    Original Paper 16 September 2021 Pages: 6533 - 6547

    

34. Real-Time Visual Analysis of the Microcracking Behavior of Thermally Damaged Granite Under Uniaxial Loading

    • Jingwei Gao
    • Yan Xi
    • Xiuli Du

    Original Paper 16 September 2021 Pages: 6549 - 6564

    

35. Experimental Study on the Anisotropic Mechanical Properties of Oil Shales Under Real-Time High-Temperature Conditions

    • Guoying Wang
    • Dong Yang
    • Lei Wang

    Original Paper 17 September 2021 Pages: 6565 - 6583

    

36. Evaluation of the Crack Propagation Capacity of Hard Rock Based on Stress-Induced Deformation Anisotropy and the Propagation Angle of Volumetric Strain

    • Qiang Han
    • Xia-Ting Feng
    • Yan Zhang

    Original Paper 22 September 2021 Pages: 6585 - 6603

    

37. A Novel Approach to Surface Strain Measurement for Cylindrical Rock Specimens Under Uniaxial Compression Using Distributed Fibre Optic Sensor Technology

    • Shao-Qun Lin
    • Dao-Yuan Tan
    • Hua Li

    Original Paper 24 September 2021 Pages: 6605 - 6619

    

38. Dual-Mesh Three Characteristic Lines Method for Stress Wave Propagation Through a Microdefected Rock Mass with a Thin-Layer Filled Macrojoint

    • L. F. Fan
    • M. Wang
    • X. L. Du

    Original Paper 26 September 2021 Pages: 6621 - 6632

    

39. Rockfall Hazard Analysis Based on the Concept of Functional Safety with Application to the Highway Network in South Korea

    • Jongook Lee
    • Michele Barbato
    • Dong Kun Lee

    Original Paper 25 August 2021 Pages: 6633 - 6647

    

40. In Situ Stress State of the Ruhr Region (Germany) and Its Implications for Permeability Anisotropy

    • Michal Kruszewski
    • Giordano Montegrossi
    • Erik H. Saenger

    Original Paper Open access 28 September 2021 Pages: 6649 - 6663

    

41. Deformation Behaviour of Crushed Waste Rock Under Lateral Cyclic Loading

    • Meng Li
    • Jixiong Zhang
    • Hao Yan

    Technical Note 28 August 2021 Pages: 6665 - 6672