Results 81 to 90 of about 1,187 (218)

Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity

Energy Science &Engineering, Volume 14, Issue 3, Page 1339-1352, March 2026.
Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang, Xiang Fu, Yuedong Liu, Xiaoqiang Zhang, Yulong Jiang   +4 more
wiley   +1 more source

Study on the Influence of Coal Stress Damage on Impact Tendency Under Cyclic Loading and Unloading Effects

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This article aims to explore the response characteristics of coal impact tendency to cyclic load. Through the mechanical damage test of coal sample under cyclic load, the deformation and damage of the coal sample under different cyclic stress, cyclic rate, and cyclic times were analyzed.
Wulin Lei, Hailiang Yu, Dingding Zhang, Yuanjia Shang, Changxiong Shao, Xiaoqian Yuchi, Binde Qin, Pan Shu, Siyang Wang, Junren Gao, Jingshou Liu   +10 more
wiley   +1 more source

PFC Simulation Study on Time-dependent Deformation Failure Properties and Energy Conversion Law of Sandstone under Different Axial Stress [PDF]

, 2022
Rock burst mostly happens in deep rock engineering, which obviously performs obvious time-dependent destruction and releases huge energy. Thus, the uniaxial compressive time-dependent deformation failure tests of sandstone under different axial stress ...
Liu, Qi, Wang, Yu
core   +1 more source

Research Progress and Typical Cases of Deep Mines Backfill Technology in China

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
With the increasing depletion of shallow mineral resources and the growing demand for metals, deep mining has become a strategic focus for China. However, deep mining operations face a series of complex challenges, including high ground stress, elevated geothermal gradients, and severe rockburst hazards.
Shuai Li, Zhenyu Dan, Haoxuan Yu, Zhenzhong Xiang, Junyu Chen, Luyu Wang   +5 more
wiley   +1 more source

Mechanism of Vibration Energy Action on Dynamic Instability of Shock-Type Rockburst Carrier System

Shock and Vibration, 2020
In coal mining, the rockburst intensity triggered by the mine earthquake is often greater in the mining area, and the precursor information is more difficult to capture.
Lyu Pengfei, Cui Xuekai
doaj   +1 more source

Binary Segmentation Algorithm Selection and Hyperparameters Optimization of Blasted Rock Image

Journal of Engineering, Volume 2026, Issue 1, 2026.
Due to the severe noise and complex texture of blasted rock, selecting an appropriate binary segmentation algorithm is essential. This study evaluates nine common local thresholding methods for segmenting blasted rock images, with a focus on hyperparameter optimization of the highly adaptable Phansalkar algorithm.
Shihao Zhang, Qinpeng Guo, Shijiao Yang, Himadri Majumder   +3 more
wiley   +1 more source

Research on Stress Characteristics of Rockburst in Over-Length Deep-Buried Tunnel

Buildings
As a unique geological hazard in a high-geo-stress environment, rockburst happens with strong suddenness, randomness, and destructiveness, but the mechanism of its occurrence in a deep-buried tunnel in a high-geo-stress environment needs further study ...
Chun Luo, Shishu Zhang, Bihua Tang, Jun Chen, Chonglin Yin, Huayun Li   +5 more
doaj   +1 more source

Kinematic Limit Analysis of Roof Stability for Elliptical Tunnels in Rock Masses

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 16, Page 3880-3896, November 2025.
ABSTRACT Noncircular cross‐sections are commonly encountered in engineering practice; however, primary attempts to analyze roof stability have focused on circular and rectangular configurations. This study investigates the roof stability of elliptical tunnels with varying aspect ratios, employing two semi‐analytical approaches: piecewise linear and ...
Tae‐Won Seo, Dowon Park
wiley   +1 more source

Evaluation of rock burst hazard in fully mechanized mining face and separate source prevention and control technology

Frontiers in Materials
To ensure safe and efficient mining at the 41,109 working face of Dafosi Mine, a systematic study was conducted focusing on key issues in rockburst prevention and control, using the 41,109 working face as the research context.
Yanbin Yang, Wenzhe Gu, Jialiang Fang, Shuai Zhang, Beiyan Zhang   +4 more
doaj   +1 more source

Stress Relief Effects of Roof‐Cutting at the Junction Zone Between Gob‐Side Entry and Stope Within Extra‐Thick Coal Seams

Energy Science &Engineering, Volume 13, Issue 9, Page 4586-4602, September 2025.
The analytical model of severe ground pressure in JZGS: (a) Overlying rock strata structure above the stope and gob‐side entry; (b) in situ monitoring of advanced and lateral abutment pressures. Many studies have demonstrated that the overlying strata above the stope and gob‐side entry fracture and collapse at specific angles [28‐30], forming broken ...
Wenrui He, Fulian He, Wenli Zhai
wiley   +1 more source