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2781
Identification of Hydraulic Connection Points between Different Confined Aquifers in the Liyazhuang Coal Mine
Published 2021-01-01“…Water inrush from coal seam floors is one major geological obstacle hindering safe and efficient production activities in mines. …”
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2782
DETERMINATION OF HEAVY METALS AND ENVIRONMENTAL HEALTH STATUS OF AGRO SOILS IN IKOT ABASI, NIGER DELTA, NIGERIA
Published 2023-08-01“…The toxic metals enter the soil-agro ecosystem through natural processes derived from anthropogenic activities and geological weathered materials. This study is aimed at investigating the contamination status of soils from Ikot Abasi, Akwa Ibom State, being an area of intense agricultural and industrial activities. …”
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2783
Optimized reinforcement of granite residual soil using a cement and alkaline solution: A coupling effect
Published 2025-01-01“…Granite residual soil (GRS) is a type of weathering soil that can decompose upon contact with water, potentially causing geological hazards. In this study, cement, an alkaline solution, and glass fiber were used to reinforce GRS. …”
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2784
Mechanical Mechanism and Propagation Law of Fissure-Tip Cracks of Large-Size Rock Specimens with Two Precut Fissures
Published 2021-01-01“…The rock is a kind of geological medium with damages of different degrees including fissures, faults, joints, and other structural defects. …”
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2785
Regional Soil Patterns as Indicators of Late Cenozoic Change in the Critical Zone: A Baseline Synthesis for the Landscapes of Peninsular India
Published 2024-12-01“…The inventory highlights two generations of residual soils: 1) deep Lixisols, hosting low-activity clays and large iron hydroxide concentrations indicative of humid conditions in the geological past; and 2) shallow Luvisols containing high-activity clays and large stocks of exchangeable bases, indicative of drier conditions compatible with the modern climate. …”
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2786
Study on Roof-Coal Caving Characteristics with Complicated Structure by Fully Mechanized Caving Mining
Published 2019-01-01“…Meanwhile, based on the geological settings of Qinyuan coal mine, numerical simulation on roof-coal caving law under different thicknesses of hard or soft coal and gangue has been performed using UDEC software. …”
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2787
Spectral induced polarization survey for the estimation of hydrogeological parameters in an active rock glacier
Published 2025-01-01“…In this study, we investigate the use of an emerging geophysical method in permafrost studies to understand the hydrogeological properties of the active Gran Sometta rock glacier, which consists of a two-lobe tongue (a white and a black) whose lobes differ in their geologies. We present the application of spectral induced polarization (SIP) imaging, a method that provides quasi-continuous spatial information about the electrical conductivity and polarization of the subsurface, which are linked to hydrogeological properties. …”
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2788
Adaptability of the Cutter-Head of the Earth Pressure Balance (EPB) Shield Machine in Water-Rich Sandy and Cobble Strata: A Case Study
Published 2020-01-01“…The results indicate that the opening rate, maximum opening size, and the opening position of the cutter-head are key factors that affected the geological adaptability of the shield machine in water-rich sandy and cobble strata. …”
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2789
Parameter Sensitivity Analysis of the Hydraulic Fracture Growth Geometry in a Deep Shale Oil Formation: An Experimental Study
Published 2022-01-01“…The true triaxial fracturing simulation experimental system is used to carry out experimental research on full-diameter core rock samples, and the propagation patterns of hydraulic fractures under the influence of different geological factors (in situ stress difference and natural fractures) and engineering factors (pumping rate and fracturing fluid viscosity) are compared and analyzed. …”
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2790
Grouting Mechanism in Water-Bearing Fractured Rock Based on Two-Phase Flow
Published 2021-01-01“…The diffusion mechanism of slurry in fractured rock is affected by geological environment and slurry performance, which should be revealed and characterized better. …”
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2791
Annual Variation of PM2.5 Chemical Composition in Ho Chi Minh City, Vietnam Including the COVID-19 Outbreak Period
Published 2023-03-01“…Furthermore, the results of a concentration-weighted trajectory analysis suggested that the geological sources of PM2.5 were in the local areas of HCMC and the northeast provinces of Vietnam (where coal-fired power plants are located).…”
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2792
High speciation in the cryptic Pristimantis celator clade (Anura: Strabomantidae) of the Mira river basin, Ecuador-Colombia
Published 2025-01-01“…Over the past decade, research in the montane forests of the Mira River basin, spanning Ecuador and Colombia, has identified it as crucial for the adaptive radiation of flora and fauna, shaped by its complex geological and climatic history. This study focuses on the phylogenetic and systematic revision of a frog clade initially labeled as Pristimantis verecundus, revealing significant cryptic diversity. …”
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2793
Predicting of Temporal-Spatial Sand Dunes Transition Caused by Marine Storms (Case Study: The Coast of Makran, Iran)
Published 2019-03-01“…The 1991, 2001and 2014 month August images were used, this images from website of the US Geological Survey (USGS) have been prepared. Finally, these images by using Geographic Information System (GIS), ENVI and IDRISI softwares were analyzed. …”
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2794
Application of fractal model in the Jurassic tight sandstone reservoirs of central Junggar Basin as constrained by mercury ejection curves
Published 2025-03-01“…However, the conventional analysis of the high-pressure mercury intrusion has always focused on the mercury injection curves themselves, neglecting the important geological information conveyed by the mercury ejection curves. …”
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2795
Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances
Published 2022-01-01“…In view of the problems of composite roof coal roadway under multiple dynamic pressure disturbances such as strong stratification, large deformation of the roadway surrounding rock, and poor safety and reliability, this paper analyzed the deformation and instability characteristics of composite roof coal roadway under different influencing factors using numerical simulation and expounded the stress distribution pattern of composite roof coal roadway under multiple dynamic pressure disturbances. The geological conditions of gas control roadway in the 22301 working face of Tunlan coal mine are taken as examples, and this study is carried out based on the analysis of roof instability conditions of composite roof coal roadway. …”
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2796
Static Analysis of Gelatin-like Simulation Mass as a Subsoil in Scale Physical Modeling
Published 2025-01-01“…The investigation of wave propagation in the geological environment is warranted, and will ultimately help to provide a better understanding of the response of subsoil to excitation. …”
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2797
Enhancing hydraulic fracturing efficiency through machine learning
Published 2025-01-01“…These models were specifically employed to predict and assess fracture width based on a variety of geological and operational parameters: geometric factors (γ), Shear Modulus (G), Poisson’s ratio (ν), viscosity of the fracturing fluid (µ in centipoise), crack height (h), fluid efficiency (η), injection time (t), and crack length (x). …”
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2798
Structural Alteration, Hydration Stability, Heavy Metal Removal Efficiency, and Montmorillonite Porosity Fate by Coupling the Soil Solution pH and a Thermal Gradient
Published 2022-01-01“…Clay minerals are considered as a promising material in the context of geological barrier for the confinement of radioactive and industrial waste. …”
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2799
Predicting the presence of tephra layers in lacustrine deposits using spectral gamma ray data: An example from Lake Chalco, Mexico City.
Published 2024-01-01“…This protocol is based on a combination of physical aspects of gamma-ray spectroscopy and geological information specific to the lake system being studied. …”
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2800
Dynamic Mechanical Response, Cracking Behavior, and Stress Intensity Factors of Cement Mortar Specimens with Open and Closed Flaws
Published 2022-01-01“…Major civil and military infrastructures are usually located in mountainous areas with complex geological structures. When subjected to impact loads caused by operational blasting or seismic activities, the inherent flaws or joints in the hosting rock mass may grow irreversibly and eventually and cause the entire structure to collapse. …”
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