Results 81 to 90 of about 597 (189)

Recent advancements and emerging challenges in deep underground engineering

Deep Underground Science and Engineering, EarlyView.
Jianguo Wang, Chunfai Leung
wiley   +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

Study on Prevention and Control Effect of Strong Rock Burst Based on Rapid Stress Release of Blasting Relieving Pressure Technology

工程科学与技术, 2018
The strong rockburst disaster in deep tunnels is a difficult issue for the safety of excavation and the efficient application. The design of scientific blasting excavation has become an important technical means for the effective control of strong ...
Shiyong WU, Jifang ZHOU, Chengbo DU
doaj  

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

Rockburst multi-factor coupling prediction and quantitative analysis of influencing Factors’ SHAP values based on TPE-FDM-XGBoost model

Ain Shams Engineering Journal
Accurately predicting rockburst and clarifying its influencing factors is a crucial support for ensuring the safe and efficient construction of underground projects, deepening the theory of geological disasters, and promoting engineering technology ...
Chao Peng, Wanrong Liu, Miao Liu, Xiao Wang, Xiaotong Du   +4 more
doaj   +1 more source

Multidimensional Analysis of Precursor Information of Rockburst during Loading and Unloading of Deep Diorite

, 2023
At present, rockburst disasters cannot be predicted accurately, and the prevention and control of deep underground engineering disasters are significantly challenging.
Zonghong Zhou, Jian Liu
core   +1 more source

Mechanism and prevention of rockburst in deep asymmetric goaf areas coal seam main roadway

Meitian dizhi yu kantan
ObjectiveWith an increase in the utilization of main roadways in coal seams, rockburst have occurred increasingly more frequently in these main roadways.
Xihui LU, Weiwei ZHAO, Yinghao HAO, Anye CAO, Shijie SU, Guowei LYU, Gang BAI   +6 more
doaj   +1 more source

Numerical Investigation into Rockburst Prevention Technology in Deep-Buried Tunnels with Circular Cross-Section

, 2011
Rockburst is a common dynamic failure phenomenon in deep-buried underground construction process, which greatly threatened the safety of equipment and person.
Xin Yu Wang, Yu Ming Cui, Zhu Shan Shao
core   +1 more source

Using elastic wave velocity anomaly to predict rockburst hazard in coal mines

, 2023
For the prevention and control of rockburst in underground coal mines, a detailed assessment of a rockburst hazard area is crucial. In this study, the dependence between stress and elastic wave velocity of axially-loaded coal and rock samples was tested ...
Dou, Linming, Zhou, Kunyou, Yang, Ke, Chai, Yanjiang, Małkowski, Piotr   +4 more
core   +1 more source