Numerical Analysis of the Width Design of a Protective Pillar in High-Stress Roadway: A Case Study by FuZhou Qi, ZhanGuo Ma, Ning Li, Bin Li, Zhiliu Wang, WeiXia Ma

“…With the 20 m protective pillar width adopted in the field test, large deformation of roadways and serious damage to surrounding rocks occurred. According to the case study at the Wangzhuang coal mine in China, the stress changes and energy density distribution characteristics in protective pillars with various widths were analysed by numerical simulation. …”
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Experimental analysis on a solar photovoltaic indoor cooker integrated with an energy storage system: A positive step towards clean cooking transition for Sub-Saharan Africa by Jimmy Chaciga, Denis Okello, Karidewa Nyeinga, Ole J. Nydal

“…The heat storage contains heat transfer oil and rock pebbles. The heating funnel was made in the form of a Y-shape where a small volume of oil is heated very fast to higher temperatures. …”
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Hydrogeochemical Characteristics and Formation of Low-Temperature Geothermal Waters in Mangbang-Longling Area of Western Yunnan, China by Xing-Wang Chang, Mo Xu, Liang-Wen Jiang, Xiao Li, Yun-Hui Zhang

“…The data points of δD and δ18O of the hot spring water samples in the study area show a linear right-up trend, indicating the δ18O reaction between the water and rock and a possible mixture of magmatic water from below. …”
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Sedimentary Signatures of Super Typhoon Haiyan: Insight from Core Record in South China Sea by Yu-Huang Chen, Chih-Chieh Su, Pai-Sen Yu, Ta-Wei Hsu, Sheng-Ting Hsu, Hsing-Chien Juan, Yuan-Pin Chang, Yu-Fang Ma, Shye-Donq Chiu

“…The Mn-rich layers at the bottom of the typhoon layers may be related to the soil and rock composition of the Palawan region, which experienced tsunami-like storm surges caused by Super Typhoon Haiyan. …”
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Multiple Influences of Paleogeography, Sequence Stratigraphy, and Fold Structure on Coalbed Methane Accumulation in the Lopingian (Late Permian) of Junlian Coalfield, SW China by Xiangdong Gao, Wuzhong Li, Yiming Yang, Kaigui Yin, Shihao Zhou

“…The results show that six rock types were identified and further subdivided into twenty lithofacies types. …”
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Role of hole depth on mechanical behavior and acoustic emission characteristics of pre-drilled sandstone by Jiahan Liu, Ruide Lei, Ruide Lei

“…To examine the influence of hole depth on the mechanical properties of rock, a series of uniaxial compression tests were performed on six groups of pre-drilled sandstone samples, each with varying depths. …”
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Experimental Study on Axial Impact Mitigating Stick-Slip Vibration with a PDC Bit by Yong Wang, Hongjian Ni, Yiliu (Paul) Tu, Ruihe Wang, Xueying Wang, Heng Zhang, Jiaxue Lyu, Hongqiao Xie

“…Field tests show that the use of downhole axial impactors is helpful to mitigate stick-slip vibration and improve rock-breaking efficiency. However, there are many deficiencies in the study of how axial impact load affects stick-slip vibration of a PDC bit. …”
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Stability Analysis of a Weathered-Basalt Soil Slope Using the Double Strength Reduction Method by Xiaoliang Liu, Xin Chen, Mei Su, Shilin Zhang, Dengfeng Lu

“…Once the critical stress state of the slope was exceeded, the plastic sliding block slipped at high speed over a long distance along the rock-soil layer interface, and along the way, it scraped out and carried away the original loose topsoil and gravel blocks, which finally piled up in the form of a debris flow. …”
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Irrigation Management of HLB-Affected Trees by Davie Mayeso Kadyampakeni, Kelly T. Morgan, Mongi Zekri, Rhuanito Ferrarezi, Arnold W. Schumann

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Using Spatial Regression to Model Potentially Toxic Metal (PTM) Mobility Based on Physicochemical Soil Properties by Melissa A. Magno, Arpita Nandi, Ingrid E. Luffman

“…Mining processes generate waste rock, tailings, and slag that can increase potentially toxic metal (PTM) concentrations in soils. …”
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Numerical Simulation Study of Fines Migration Impacts on an Early Water Drainage Period in Undersaturated Coal Seam Gas Reservoirs by Xiaolong Peng, Suyang Zhu, Zhenjiang You, Zhimin Du, Peng Deng, Chaowen Wang, Mingwei Wang

“…Hence, a robust modelling tool is required to include the mechanisms of fines migration and to predict their impacts on rock and production. In this paper, fines migration in coal is categorized into three stages: generation, migration, and deposition processes. …”
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Mechanical properties and damage characterization of cracked granite after cyclic temperature action by Xiankai Bao, Lingyu Wang, Guangqin Cui, Jianlong Qiao, Baolong Tian, Shunjia Huang, Lizhi Wang

“…Abstract Due to the unique geographical environment of the plateau, large-scale damage and destruction of fractured surrounding rock often occur during geotechnical engineering construction as a result of high-temperature cycles. …”
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Irrigation Management of HLB-Affected Trees by Davie Mayeso Kadyampakeni, Kelly T. Morgan, Mongi Zekri, Rhuanito Ferrarezi, Arnold W. Schumann

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Reservoir Sensitivity Analysis of Tight Sandstone and Its Controlling Factors: A Case Study from Chang 4+5 to Chang 6 Reservoirs in N 212 Well Block of Nanniwan Oilfield, Ordos Bas... by Pingtian Fan, Yuetian Liu, Ping Li, Yanqin Guo, Weichu Yu, Baiqiang Li

“…The results show that the rock type of the Chang 4+5 and Chang 6 reservoirs in the N 212 well block of the Nanniwan Oilfield is mainly arkose, with the mean porosity of 11.2% and 8.45% and the mean permeability of 0.35×10−3 μm2 and 0.44×10−3 μm2, respectively. …”
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Quantifying the crossover from capillary fingering to viscous fingering in heterogeneous porous media by Xin Yang, Xingfu Li, Bo Kang, Bin Xu, Hehua Wang, Xin Zhao, Bo Zhang, Kai Jiang, Shitao Liu, Yanbing Tang

“…While previous studies have utilized phase diagrams to investigate the influence of the viscosity ratio and wettability of the crossover zone, fewer have studied the impact of rock heterogeneity. In this study, we created pore network models with varying degrees of heterogeneity to simulate water flooding at different injection rates. …”
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Sealing Behavior and Flow Mechanism of Expandable Material Slurry with High Water Content for Sealing Gas Drainage Boreholes by Guozhong Hu, Wenrui He, Changjin Lan

“…Therefore, featuring strong groutability, good sealability, high compressive strength, microexpansion, and tight binding with coal mass, expandable materials with high water content are ideal for sealing coalbed gas drainage boreholes because of their efficiency in sealing fractures in coal and rock masses around the borehole.…”
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Analysis of Factors Influencing Stability of Overlying Soil Layer on Thin Bedrock Based on Crack Development-Closure Test by Guangming Wu, Haibo Bai, Luyuan Wu, Shixin He, Bin Du

“…Clay has remolding properties that are unlike the nonreversible characteristics of cracks in brittle rock, and failure cracks in clay can reclose or continue to expand under the influence of different external factors. …”
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Radon on Mars and the Moon derived from Martian and lunar meteorites by Frédéric Girault, Ludovic Ferrière, Carine Sadaka, Íñigo de Loyola Chacartegui Rojo, Rémi Losno, Frédéric Moynier, Frédéric Perrier, Pierre-Yves Meslin

“…Here we measure the effective radium-226 concentration (EC Ra) of six Martian and nine lunar meteorites to derive radon source terms for Martian and lunar rocks. EC Ra values are 0.029–0.78 and 0.045–0.80 Bq kg−1 for Martian and lunar meteorites, respectively (0.041 ± 0.003 Bq kg−1 for falls and 0.28 ± 0.02 Bq kg−1 for finds), lower than most terrestrial rocks but similar to other meteorites and terrestrial primitive basalts. …”
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Prediction of Fracture Evolution and Groundwater Inrush from Karst Collapse Pillars in Coal Seam Floors: A Micromechanics-Based Stress-Seepage-Damage Coupled Modeling Approach by Yinlong Lu, Bingzhen Wu, Mengqi He, Lianguo Wang, Dan Ma, Zhen Huang

“…In this study, a micromechanics-based coupled stress-seepage-damage (SSD) modeling approach, in which the macroscopic mechanical and hydraulic properties of the rock are explicitly related to the microcrack kinetics, is proposed to simulate the fracture evolution and the associated groundwater flow in KCPs. …”
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Dynamic Splitting Behavior and the Constitutive Relationship of Frozen Sandstone Containing a Single Fissure by Tao Zhao, Gengshe Yang, Lei Wang, Hailiang Jia, Yuzhe Qiao

“…Among the failure modes of frozen fractured rocks, tensile failure is very common. In this study, the dynamic tensile strength of fractured sandstone samples with four crack inclination angles (0°, 30°, 60°, and 90°) is tested by using a split Hopkinson pressure bar at four subzero temperatures (−5, −10, −15, and −20°C). …”
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