Results 121 to 130 of about 11,832 (314)

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, EarlyView.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Seasonal Ice Cover Could Allow Liquid Lakes to Persist in a Cold Mars Paleoclimate

AGU Advances
Geomorphic and stratigraphic studies of Mars prove that extensive liquid water flowed and pooled on the surface early in Mars' history. Martian paleoclimate models, however, have difficulty simulating climate conditions warm enough to maintain liquid ...
Eleanor L. Moreland, Sylvia G. Dee, Yueyang Jiang, Grace Bischof, Michael A. Mischna, Nyla Hartigan, James M. Russell, John E. Moores, Kirsten L. Siebach   +8 more
doaj   +1 more source

Stratigraphical geology of the Permo- Carboniferous system in the Maitland-Branxton district

Proceedings of the Linnean Society of New South Wales, 1913
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +3 more sources

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

Energy Science &Engineering, EarlyView.
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

Assessing multisensor integration for geological modeling: UAV photogrammetry, LiDAR, and hyperspectral data in a visualization workflow

Geo-spatial Information Science
Accurate geological interpretation depends on integrating multiple remote sensing datasets, as single-sensor methods often miss the full spatial and spectral complexity of outcrops.
Douglas Bazo de Castro, Diego Fernando Ducart   +1 more
doaj   +1 more source

Control Mechanism of Pore Structure of Different Macroscopic Lithotypes on Gas Desorption Differences: A Case Study of High‐Rank Coal From the Western Ordos Basin

Energy Science &Engineering, EarlyView.
论文陈述 Paper Statement 本研究揭示了不同宏观煤岩类型的差异化控气机制:半亮煤是主要“储气核心,” 光亮煤为关键“渗流通道,” 暗淡煤则是“初期高产贡献者”。这为深层煤层气甜点优选与定制开发提供了关键理论依据。 This study reveals the differentiated gas‐controlling mechanisms of different macroscopic coal lithotypes: semibright coal acts as the primary “gas storage core,” bright coal serves as the critical “seepage channel,” and dull coal functions
Heng Li, Conghui Liu, Chen Li, Peipei Zhu, Sijie Feng, Rui Shi, Jian Shen   +6 more
wiley   +1 more source

The asbian to arnsbergian conodonts and sequence stratigraphy of the Northumberland trough [PDF]

, 2001
Yoredale sequences are excellent exemplars of the sequence stratigraphy model; the spacial and temporal variation of these complex shallow marine/fluvio-deltaic/ coastal plain cycles, exhibit all the uiternal facies architecture that would be expected of
Bowden, Alistair
core  

Evaluation of Drillability of the Mahu Conglomerate Formation in Xinjiang, China

Energy Science &Engineering, EarlyView.
This graphical abstract illustrates the workflow for developing an optimized prediction model using measurement while drilling (MWD) data. A total of 90 MWD cases are divided into a training set (80%) and a test set (20%). Four logging‐while‐drilling parameters—compensation density, acoustic travel time, resistivity, and neutron porosity—are selected ...
Yun Xia, Wan Zhu, Rui Chen, Hui Zhang, Boyuan Yang, Kunhong Lv, Baokang Wu, Xinrui Wang, Hu Wu   +8 more
wiley   +1 more source

Cost Analysis Insights for Offshore CCS Hubs: A Case Study of the Santos Basin, Brazil

Greenhouse Gases: Science and Technology, EarlyView.
ABSTRACT The reuse of decommissioned offshore platforms for geological carbon storage offers a cost‐effective and technically feasible strategy to reduce greenhouse gas emissions in emerging economies. This study presents a comprehensive techno‐economic assessment of offshore carbon capture and storage (CCS) hubs in Brazil, with a focus on the Merluza ...
Norah A. Ordoñez, Mariana Ciotta, Hirdan Katarina de Medeiros Costa, Livia Koch Sposito, Daniel Alkmin   +4 more
wiley   +1 more source

Sedimentological analysis and hydrocarbon potential of the upper devonian-lower carboniferous Tahara sandstones, ghadames basin, western Libya [PDF]

, 1998
The Palaeozoic (Upper Devonian-Lower Carboniferous) Tahara Formation, western Libya, was deposited in shallow-water, marginal and nearshore marine environments influenced by waves and storms.
Burki, Milad Mohamed Milad
core