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2561
Flow Unit Model of Channel Sand Body and Its Effect on Remnant Oil Distribution: A Case Study of PI Formation in the Eastern Transition Zone of Daqing Oilfield
Published 2020-01-01“…Four types of flow units (strong-current limiting, medium-current limiting, weak-current limiting, and none-current limiting) in the point bar sand body were identified, whereas one type, unshielded unit, was identified in the narrow channel. Geological parameters, such as porosity, permeability, and pore-throat radius (r50), were optimized to quantitatively characterize these various flow units. …”
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2562
The Mechanical Criterion of Activation and Instability of Normal Fault Induced by the Movement of Key Stratum and Its Disaster-Causing Mechanism of Rockburst in the Hanging Wall Mi...
Published 2021-01-01“…Coal mine rockburst is closely related to the complex geological structure. Understanding the criterion of the fault activation instability and the disaster-causing mechanism of rockburst under the influence of mining is the theoretical premise and important guarantee of safe and efficient coal mining. …”
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2563
Geochemical Characteristics of Crude Oil in Member 7 of Yanchang Formation in Yanchang Oilfield
Published 2022-01-01“…The power and diversion system of the Yanchang Formation in Yanchang Oilfield are studied, and the main factors of formation and flow of deep reservoirs in the Yanchang Formation are explored, as well as the regional geological survey of the Yanchang Formation No. 7 in Yanchang Oilfield. …”
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2564
Land conversions not climate effects are the dominant indirect consequence of sun-driven CO2 capture, conversion, and sequestration
Published 2025-01-01“…Large-scale direct air capture combined with injecting CO _2 into geological formations could retain carbon long-term, but demands a substantial amount of energy, pipeline infrastructure, and suitable sites for gaseous storage. …”
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2565
Subsidence Control Design Method and Application to Backfill-Strip Mining Technology
Published 2021-01-01“…Intensive and massive coal mining causes a series of geological hazards and environmental problems, especially surface subsidence. …”
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2566
Numerical Modeling and Stability Analysis of Surrounding Rock of Yuanjue Cave
Published 2021-01-01“…In order to fully evaluate the stability of the rock mass around the cliff where Yuanjue Cave is located, a three-dimensional geological model of the surrounding rock of Yuanjue Cave was established by using FLAC3D software, combined with three-dimensional scanning, fissure investigation, and indoor tests. …”
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2567
The Key Stratum Structure Morphology of Longwall Mechanized Top Coal Caving Mining in Extra-Thick Coal Seams: A Typical Case Study
Published 2020-01-01“…Based on the engineering geological conditions, this paper used the method of theoretical analysis and numerical simulation to study the key stratum structure morphology of LMTCCM in extra-thick coal seams. …”
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2568
Carbon Credits Through Wood Use: Revisiting the Maximum Potential and Sensitivity to Key Assumptions
Published 2025-02-01“…ABSTRACT Wood use generates technosphere carbon credits (TCCs) through avoided fossil‐based emissions and net sequestration of carbon into the technosphere (harvested wood products and geological storage). We investigated how large and uncertain TCCs of wood use per carbon harvested are considering the current and alternative ways of using wood, and the effects of the decarbonization of societies over 25‐, 50‐, and 100‐year time horizons. …”
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2569
On the Regional Variability of dB/dt and Its Significance to GIC
Published 2020-08-01“…This is due to the complex spatiotemporal behavior of electrical currents flowing in the ionosphere and/or large gradients in the ground conductivity due to highly structured local geological properties. Over some regions, and during large storms, both of these effects become significant. …”
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2570
Inventory and Conservation of Triassic Vertebrate Tracks in the Monts d’Ardèche UNESCO Global Geopark, France
Published 2021-09-01“…This territory possesses significant geological structures, including numerous and rich Middle-Late Triassic vertebrate tracksites. …”
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2571
Strength and Cost Analysis of New Steel Sets as Roadway Support Project in Coal Mines
Published 2018-01-01“…These new sets can be chosen according to different geological conditions in situ.…”
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2572
Dynamic compressive characteristics of a green sandstone under coupled hydraulic-mechanical loading: Experiments and theoretical modeling
Published 2025-01-01“…Deep rock is under a complex geological environment with high geo-stress, high pore pressure, and strong dynamic disturbance. …”
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2573
Modified Weights-of-Evidence Modeling with Example of Missing Geochemical Data
Published 2018-01-01“…Next, it is applied to a study area with 20 known gold occurrences in southwestern Nova Scotia in relation to four input layers based on geological and lake geochemical data. Assuming that geochemical data were missing for the northern part of the study area, MWofE, like WofE but unlike LR, provides posterior probabilities for the entire area.…”
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2574
Invitación al geoturismo. Reflexiones sobre geodiversidad y potencial geoturístico en la Patagonia Argentina.
Published 2013-12-01“…Geotourism as a type of nature tourism comes to fill an empty field on the use of geological resources of the landscape in Argentina. …”
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2575
Landslide hazard assessment of an urban agglomeration in central Guizhou Province based on an information value method and SVM, bagging, DNN algorithm
Published 2025-01-01“…Therefore, this study selected 12 indicators from the topography, geological structure, and external inducing factors, and conducted factor collinearity analysis using the variance expansion coefficient to construct a landslide hazard assessment index system. …”
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2576
Analysis of Rainfall Erosion and Protective Measures for the Aeolian Sand Subgrade Slope of the Wuma Expressway
Published 2022-01-01“…Typically, the rainfall period in aeolian sand areas worldwide is concentrated and the rainfall volume is relatively large, which combined with small and unstable nature and the aeolian sand particles means roads built in these areas can be easily washed away and are vulnerable to water damage. Given geological conditions, topographic features and hydrometeorological conditions differ depending on the region, basic research into water damage in highway roadbed slopes in aeolian sand areas is necessary to formulate treatment measures that are versatile and applicable in different regions. …”
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2577
Tunnel squeezing prediction based on partially missing dataset and optimized machine learning models
Published 2025-01-01“…Accurate prediction of tunnel squeezing, one of the common geological hazards during tunnel construction, is of great significance for ensuring construction safety and reducing economic losses. …”
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2578
Digital Coalescence and Consolidated Geoconservation Outcomes: A Case Study Using ArcGIS Mobile Applications at Tasmanian Coastal Geoconservation Sites
Published 2022-06-01“…Geoconservation outcomes are hindered by highly subjective and conflicting criteria, varying assessment objectives, disparities in geoconservation strategy steps and the inadequate capturing and representation of geological data in dynamically changing inventories. …”
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2579
Multivariate Prediction Model of Strength and Acoustic Emission Energy considering Parameter Correlation of Coal or Rock
Published 2020-01-01“…The results indicate that, for the coal samples from the same geological source, the obtained regression models can, respectively, predict the uniaxial compressive strength, elastic modulus, and the maximum AE energy according to the predesigned loading rate, the acoustic velocity, and mass density of coal samples measured before loading, without too many repeated loading failure tests.…”
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2580
Optimizing Pile Bearing Capacity Prediction Using Specific Random Forest Models Optimized by Meta-Heuristic Algorithms for Enhanced Geomechanically Applications
Published 2023-12-01“…The synergistic combination of specific RF models with meta-heuristic algorithms yields auspicious outcomes, paving the way for real-time PBC estimation across a broad spectrum of geological scenarios. Remarkably, the RFSO model exhibits exceptional performance, achieving an R2 value of 0.998 for the entire dataset while boasting the lowest RMSE of 109.43. …”
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