Results 31 to 40 of about 749,321 (144)

“Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study

, 2021
The floor heave problem is one of the important factors affecting the stability and safety of surrounding rocks of roadways, especially in deep high-stress mining roadway with soft rock. The return airway of no.
Yunliang Tan, Ai Chen, Xuebin Li, Xuesheng Liu, Honglei Wang, Ke Xu   +5 more
core   +1 more source

Mechanical analysis of floor deformation and floor heave control technology for gob-side entry retaining in medium thick coal seam with shallow cover depth

Meitan kexue jishu
Gob-side entry retaining technology is of great significance to improve coal recovery rate, improve roadway stress environment and ensure mine safety and efficiency.
Chaochao YAN, Guoen ZHANG, Tong CHANG, Pengfei WANG, Tianping WANG, Changquan WU   +5 more
doaj   +1 more source

The Great British Productivity Puzzle and Regional Industries: A Dynamic Multilevel Spatial Frontier Analysis

Journal of Regional Science, EarlyView.
ABSTRACT Using two approaches, we contribute to sub‐national economic performance measurement by netting out the influence of a region's performance on its industries. The first approach measures performance using technical efficiency and involves introducing the first multilevel spatial stochastic frontier model.
Anthony J. Glass, Karligash Kenjegalieva
wiley   +1 more source

Numerical Studies of Floor Heave Control in Deep Mining Roadways with Soft Rocks by the Rock Bolts Reinforcement Technology

, 2023
The floor heave is one of the key factors that can restrict high-efficiency and safety mining, especially in the deep roadways with soft rock. Considering the influences of rock fracturing over time on rock mass properties, a case study of the floor ...
Svitlana Sakhno, Ivan Sakhno
core   +1 more source

Rapid Global Oxygen Shifts and Delayed OMZ Response: Pulse and Memory of the Pacific Decadal Oscillation

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Natural decadal variability often obscures anthropogenic trends in ocean deoxygenation. Using a global observational oxygen reconstruction (1965–2022), we investigate the role of the Pacific Decadal Oscillation (PDO) in modulating decadal oxygen variability.
Zouhair Lachkar, Said Ouala
wiley   +1 more source

Mechanisms and control of mine floor heave. [PDF]

, 1996
Floor heave has been one of the important ground control problems in the underground coal mining industry. However, the mechanisms of floor heave have not been fully understood although some efforts have been made by many researchers.
Wang, Yajie
core  

Stress-Relief–Anchor-Grouting, a Collaborative Control Technology for Severe Extrusion Floor Heave in a Deep Roadway: A Case Study

, 2023
Severe extrusion floor heave is the most common type of failure of floors in deep roadways, and it is also a major problem restricting the safe and efficient mining of deep coal resources.
Liuan Zhao, Dawei Li, Shiyi Huang, Sijiang Wei, Chunsheng Yu, Meng Wang, Jie Li, Donghuang Shang   +7 more
core   +1 more source

Mechanisms of Roadway Instability and Coupled Control Technology for Working Face Passing Through Fault Zones

Energy Science &Engineering, Volume 14, Issue 9, Page 4470-4485, September 2026.
This study mainly explores the instability characteristics of roadways near faults in the working face. Taking the 51104 transportation roadway of the 51104 working face in Shengxin Coal Mine as the main research object, through theoretical analysis, borehole inspection, numerical simulation and on‐site mine pressure observation, the instability ...
Shuaifeng Yin, Yitao Yan, En Wang, Xubo Zhao, Kanglei Han   +4 more
wiley   +1 more source

Influence of Surface Processes on Intrarift Fault Displacement: 1.38 Million Years of Fault Slip Behavior in the Lake Malawi (Nyasa) Rift

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Surface processes, including hydroclimate variations, affect crustal deformation and fault behavior. These controls are especially important for intrarift faults in continental rift systems, which accommodate substantial strain while experiencing large hydrological load variations beneath rift lakes.
J. M. Greenlee, C. A. Scholz, L. Xue, D. J. Shillington, R. Moucha, P. R. N. Chindandali   +5 more
wiley   +1 more source

Data from: Strain energy analysis of floor heave in longwall gateroads

, 2018
Floor heave in longwall gateroads is a severe issue that affects the mining safety and efficiency. Researchers, however, have limited understanding on the floor heave mechanism because the deformation of the post-failure rocks in the floor is seldom ...
Wang, Kewei, Li, Wenfeng, Wang, Meng, Zheng, Dongjie   +3 more
core   +2 more sources