Results 91 to 100 of about 105,269 (259)

An example of aquifer heterogeneity simulation to modeling well-head protection areas [PDF]

, 2017
Groundwater management requires the definition of Well-Head Protection Areas (WHPA) for water supply wells. Italian law uses geometrical, chronological and hydrogeological criteria for WHPA identification, providing a groundwater travel time of 60 days ...
Fabbri, Paolo, Marcolongo, Enrico, Piccinini, Leonardo, Pola, Marco   +3 more
core   +1 more source

Study on the Energy Evolution and Stability of Roadway Surrounding Rock Under the “Simultaneous Mining–Driving” Condition

Energy Science &Engineering, EarlyView.
Based on theoretical analysis, the energy‐evolution behavior of the surrounding rock at various depths on the solid‐coal side of the 221303 material roadway during the “advancing‐toward‐mining” process was first clarified. Numerical simulations were then performed to validate and elaborate on the theoretical results.
Wei Zhang, Peilin Gong, Kang Yi, Guang Wen, Libin Bai, Lizhu Liu, Chen Gong, Peng Li   +7 more
wiley   +1 more source

Karst, GIS and geological hazard planning and management in Great Britain [PDF]

, 2010
The British Geological Survey (BGS) database of karst features for the United Kingdom include dolines, cave entrances, stream sinks, resurgences and building damage; data for approximately half of the country has so far been gathered.
Cooper, A.H., Farrant, A.R., Price, S.J.
core  

Flood magnitude-frequency and lithologic control on bedrock river incision in post-orogenic terrain [PDF]

, 2006
Mixed bedrock-alluvial rivers - bedrock channels lined with a discontinuous alluvial cover - are key agents in the shaping of mountain belt topography by bedrock fluvial incision.
Annandale, Ashworth, Baker, Baker, Baker, Baker, Baker, Baker, Baldwin, Bathurst, Bathurst, Bathurst, Beaumont, Bierman, Brayshaw, Brierley, Buffington, Buffington, Bureau of Meteorology, Carling, Chin, Church, Cordery, Costa, Dietrich, Emmett, Feldman, Ferguson, Gale, Gasparini, Gibson, Gilbert, Gomez, Grant, Grant, Hack, Hack, Hancock, Hey, Hill, Hovius, Howard, Howard, Howard, Howard, Howard, Inderbitzen, Jackson, Jansen, Jarrett, John D. Jansen, Kieffer, Knighton, Knighton, Komar, Komar, Langbein, Mabbutt, MacQueen, Manning, Martin, Merritts, Miller, Miller, Miller, Molnar, Neef, O'Connor, Parker, Parker, Pazzaglia, Pickup, Pilgrim, Prestegaard, Rana, Raymo, Rhoads, Rice, Schick, Schoklitsch, Schumm, Seidl, Sklar, Sklar, Small, Snyder, Sternberg, Stock, Thompson, Tinkler, Tinkler, Troutman, Tucker, Tucker, van de Graaf, van der Beek, Veevers, Ward, Wende, Whipple, Whipple, Whipple, Whittaker, Wilford, Willet, Williams, Wohl, Wohl, Wohl, Wohl, Wolman, Wolman   +111 more
core   +1 more source

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

Energy Science &Engineering, EarlyView.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 more
wiley   +1 more source

Geodynamics and geochemistry processes of density convection in East European evaporite paleobasin

Литосфера, 2016
The article is devoted to the fundamental problem of modern fluid geodynamics and fluid geochemistry - clarifying the role of the gravitational factor in the formation of the East European kydrostratisfera sedimentary basin. The features of the Paleozoic
V. G. Popov, R. F. Abdrakhmanov, V. N. Puchkov   +2 more
doaj   +2 more sources

Modeling postbreakup landscape development and denudational history across the southeast African (Drakensberg Escarpment) margin [PDF]

, 2002
We employ a numerical surface processes model to study the controls on postbreakup landscape development and denudational history of the southeast African margin.
Alastair Fleming, Beaumont, Ben-Avraham, Bierman, Bohannon, Braun, Brown, Brown, Brown, Brown, Burke, Cockburn, Cox, De Swardt, Dingle, Dixey, Doucouré, Duncan, Fleming, Fleming, Gadd, Gallagher, Gallagher, Gallagher, Gallagher, Gilchrist, Gilchrist, Gilchrist, Gilchrist, Gunnell, Gurnis, Gurnis, Haq, Hartley, Heimsath, James, Jean Braun, King, King, King, King, Kooi, Kooi, Lithgow-Bertelloni, Lowry, Martin, Martin, Maud, Maud, McKenzie, Menzies, Michael A. Summerfield, Nguuri, Nyblade, Ollier, Ollier, Oreskes, Partridge, Partridge, Partridge, Partridge, Peter van der Beek, Pitman, Pugh, Pysklywec, Roderick W. Brown, Rust, Seidl, Smith, Stock, Stüwe, Summerfield, Summerfield, Summerfield, Summerfield, Summerfield, ten Brink, Tucker, van Balen, van der Beek, van der Beek, van der Beek, van der Beek, van der Wateren, Vasconcelos, von Veh, Watts, Weissel, Wellington, Widdowson   +89 more
core   +1 more source

Machine Learning‐Driven Classification and Production Capacity Prediction of Tight Sandstone Reservoirs: A Case Study of the Taiyuan Formation, Ordos Basin

Energy Science &Engineering, EarlyView.
On the basis of core and log data, a Bayesian‐Optimized Random Forest model achieved 92.76% accuracy in classifying tight sandstone reservoirs. A gray relational analysis‐derived evaluation index shows > 80% consistency with actual gas zones. ABSTRACT Tight sandstone gas (TSG), an unconventional oil–gas resource, has heterogeneous reservoirs ...
Yin Yuan, Haijiao Fu, Detian Yan, Gang Wang, Shuguang Yang, Mengmeng Liu, Qingling Jiang, Xiaoming Wang, Wei Wang   +8 more
wiley   +1 more source

Textural and Lithologic Differences of Cretaceous, Tertiary, and Quaternary Gravels of South Arkansas [PDF]

, 1987
Stream gravels have been derived from the Ouachita Mountains since at least Cretaceous times. Past studies have assigned ages to gravel deposits in the basins of the Saline and Little Missouri Rivers on the basis of altitude above local floodplains. This
Wood, Lesli
core   +2 more sources

Study on Damage Characteristics and Evolution Law of Macro‐Meso Structure of Surrounding Rock Under Mining Stress

Energy Science &Engineering, EarlyView.
Investigating the differential impact of mining stress on roadways, we find that in horizontally stressed environments, the inner surrounding rock exhibits more pronounced macro‐meso damage compared to the outer side. ABSTRACT The control of surrounding rocks in dynamic pressure roadways has consistently been one of the challenging predicaments in the ...
Fan Lei, Chang Jucai, Yuan Chao, Wu Hai, Chen Haoran   +4 more
wiley   +1 more source