Results 81 to 90 of about 12,068 (222)

Coal deposition in carbonate rich shallow Lacustrine systems: The Calaf and Mequinenza sequences (Oligocene, eastern Ebro Basin, NE Spain) [PDF]

, 2013
Two main coal-bearing sequences developed during the Oligocene in the Tertiary Ebro Basin, the Calaf (early Oligocene) and Mequinenza (late Oligocene) coal basins.
Cabrera, Lluís, Sáez, Alberto
core  

Design of Initial Mining Pressure Relief Scheme for Large‐Size Mining Face: A Case Study

Engineering Reports, Volume 8, Issue 4, April 2026.
The numerical simulation analysis method is used to compare the actual mining face (315 m) with the designed mining face (200 m). The results show that the large mining height working face has larger abutment pressure peak and stress concentration factor than the general mining height working face.
Qinghu Wei, Ming Ji, Biao Huang, Kang Guo   +3 more
wiley   +1 more source

Corrigendum to “Prediction of Mining Subsidence in Shallow Coal Seam” [PDF]

Mathematical Problems in Engineering, 2020
Gang Li, Qinghe Yang
openaire   +1 more source

Similar Material Simulation Study on Dam Movement and Deformation Law of Deep Coal Seam Mining Under Dam

Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.
Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng, Qin Hong‐yan, Hu Shou‐bin, Xu Xiao‐yu, Ti Zheng‐yi, Zheng Zhuo‐yan, Yang Shuai, Li Yang   +7 more
wiley   +1 more source

The characteristic and evolution of coal-forming swamp in Hanshuiquan district, Santanghu Coalfield, Xinjiang, NW China, during the Middle Jurassic: evidence from coal petrography, coal facies and sporopollen

International Journal of Coal Science & Technology, 2019
Santanghu Coalfield is the largest integrated coalfield exploration area in China. The major coal seams developing in Xishanyao Formation (Middle Jurassic) are the high-quality steam coals characterized by large thickness, favorable horizontal continuity
Shuo Feng, Jing He, Jijun Tian, Xingyu Lu, Bo Yang   +4 more
doaj   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science &Engineering, Volume 14, Issue 4, Page 1851-1863, April 2026.
With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
wiley   +1 more source

Exploring coal seam wind oxidation zone based on transient electromagnetic method

Meikuang Anquan
The development of coal seam wind oxidation zone has a huge impact on the production organization and safe mining of coal mines. This paper focuses on the technical difficulties in delineating the coal seam wind oxidation zone in the eastern uplift zone ...
Zhang WU, Kai ZHANG, Xiongwei LI, Weihua YAO, Zhenzhen ZHANG, Xiugang LIU   +5 more
doaj   +1 more source

Research on dynamic appearance regularity of blow-out from drilling hole in low gas coal seam of Panxi Coal Mine

Gong-kuang zidonghua, 2019
In order to reveal dynamic appearance regularity of blow-out from drilling hole in deep low gas coal seam of Panxi Coal Mine, field tests of gas content and mining stress were carried out in 6198 working face of Panxi Coal Mine, and simulation analysis ...
NIE Fengxiang, GUO Haifeng
doaj   +1 more source

Дослідження сегрегації для розробки техногенних покладів з метою вдосконалення якості продукції [PDF]

, 2018
Виявлено теоретичне підґрунтя ефекту сегрегації при складуванні відходів збагачення з урахуванням високоякісного опису різних фракцій, проведені розрахунки щодо визначення основних параметрів технологічного процесу складування та подальшої ...
Kustov, V., Pchelkin, G., Strilets, O., Кустов, В. В., Пчелкин, Г. Д., Пчелкин, Георгий Дмитриевич, Пчолкін, Г. Д., Пчолкін, Георгій Дмитрович, Стрелец, А. П., Стрелец, Александр Петрович, Стрілець, О. П., Стрілець, Олександр Петрович   +11 more
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Eocene–early Oligocene climate and vegetation change in southern China: Evidence from the Maoming Basin [PDF]

, 2017
Although the Eocene-Oligocene climate transition marks a critical point in the development of the ‘icehouse’ global climate of the present little is known about this important change in the terrestrial realm at low latitudes.
Aleksandrova, Galina N., Chen, Gang, Herman, Alexei B., Jin, Jian-Hua, Kodrul, Tatiana M., Maslova, Natalia P., Spicer, Robert A., Spicer, Teresa E.V., Yang, Jian   +8 more
core   +1 more source