Results 51 to 60 of about 504 (182)

Rockburst prediction using artificial intelligence techniques: A review

Rock Mechanics Bulletin
Rockburst is a phenomenon where sudden, catastrophic failure of the rock mass occurs in underground deep regions or areas with high tectonic stress during the excavation process.
Yu Zhang, Kongyi Fang, Manchao He, Dongqiao Liu, Junchao Wang, Zhengjia Guo   +5 more
doaj   +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

A New Theoretical View of Rockburst and Its Engineering Application

Advances in Civil Engineering, 2018
Traditionally, rockburst is considered as a dynamic phenomenon of sudden destruction of coal/rock mass. In this study, rockburst is treated as an event process rather than a phenomenon. This paper introduces typical rockburst process, its classification,
Junfeng Pan, Shaohong Liu, Shuwen Wang, Yongxue Xia   +3 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

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

Log‐Periodic Power Law Singularities in Landslide Dynamics: Statistical Evidence From 52 Crises

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Landslide movements typically show a series of progressively shorter quiescent phases, punctuated by sudden bursts during an acceleration crisis. We propose that such intermittent rupture phenomena can be described by a log‐periodic power law singularity model. Amounting mathematically to a generalization of the power law exponent from real to
Qinghua Lei, Didier Sornette
wiley   +1 more source

Tunnel rockbursts induced by dynamic disturbances: mechanism and mitigation

IOP Conference Series: Earth and Environmental Science
Abstract Rockbursts are characterized by violent rock fractures and pose a significant threat to hard-rock tunnels, potentially resulting in casualties and damage to excavation spaces. Globally recognized as one of the least understood and most feared challenges in underground excavations, rockbursts are often triggered by dynamic ...
Jian Deng, Fengqiang Gong, Hehua Zhu
openaire   +1 more source

Experimental Simulation Investigation on Mechanism and Criterion of Impact‐Induced Rockburst in Gaoloushan Deep Tunnel

Energy Science &Engineering, Volume 13, Issue 8, Page 4252-4266, August 2025.
ABSTRACT During the excavation of a deep‐buried tunnel by the drilling and blasting method, the dynamic stress of blasting may cause the disorderly release of high energy in the rock mass during the blasting process of deep high‐energy rock. Blasting vibration is one of the main factors inducing dynamic disasters (such as rockbursts) in the surrounding
Chao Ren, Xiaoming Sun, Manchao He, DongQiao liu, JinKun Yang, Kunbo Zhang   +5 more
wiley   +1 more source

Effects of coal's initial macro-cracks on rockburst tendency of rock–coal composite samples [PDF]

Royal Society Open Science, 2019
In the present study, uniaxial compression tests were conducted on sandstone–coal composite samples to investigate the effects of original macro-cracks in coal on the rockburst tendency. First, the energy dissipation theory was used to derive the elastic
Shaojie Chen, Dawei Yin, Huimin Liu, Bing Chen, Ning Jiang   +4 more
doaj   +1 more source

A New Method to Assess the Possibility of Brittle Failure of Rock Induced by Deep Excavations

International Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 6, Page 1725-1746, 25 April 2025.
ABSTRACT Spalling and rockburst are severe criticalities that can emerge while excavating deep tunnels in rock masses under heavy natural stress states. Here, rock brittle failure can induce massive releases of the energy stored during the excavation and dangerous projections of rock blocks into the opening.
Lorenzo Milan, Monica Barbero, Mauro Borri‐Brunetto   +2 more
wiley   +1 more source