Grouting Design of Rich Water Tunnels and the Calculation of Distance between Annular Blind Pipes by Helin Fu, Pengtao An, Kai Li, Guowen Cheng, Jie Li, Xiaohui Yu

“…The results show that (1) grouting reinforcement is an important means to reduce water seepage, and tunnel water seepage can be adjusted by changing the thickness and permeability coefficient of the grouting reinforcement circle, in which the thickness of the reinforcement circle should not be too large, and the permeability coefficient should not be less than 1/80 of the surrounding rock permeability coefficient; (2) according to the derived formula, the water pressure of the secondary lining structure decreases in a parabolic manner from the middle of the two rows of annular blind pipes to the place where the annular blind pipes are set; (3) the allowable water seepage of the tunnel and the design value of the water pressure resistance of the lining structure should be considered when determining the distance between annular blind pipes; and (4) based on the derived formula, the distance between the annular blind pipes in the test section of the Hongtu extra-long tunnel is determined to be 8 m.…”
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The organizational challenges of municipal call centers as a health service in Norway-a multiple case study by Linda Grøndal-Eeles, Janne Dugstad, Hilde Eide, Etty Nilsen

“…This study aims to research how call centers in Norway were organized, what services they offered, and what challenges they faced. …”
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Assessment of Major and Trace Elements in Drinking Groundwater in Bisha Area, Saudi Arabia by Faleh Z. Alqahtani, Saifedin Y. DaifAllah, Yasir F. Alaryan, Abubakr M. Elkhaleefa, Eid I. Brima

“…In total, 15 elements were measured including four major elements (Na, K, Mg, and Ca) and 11 trace elements (V, Cr, Mn, Co, Ni, Cu, Zn, As, Se, Cd, and Pb). …”
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Experimental Study on Nanomechanical Properties of Yunnan Red-Bed Mudstone by Xian Ye, Yongcai Liu, Haibin Xue, Guo Li, Jin Xing

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The Accumulation Characteristics of the Paleozoic Reservoir in the Central-Southern Ordos Basin Recorded by Organic Inclusions by Ruijing Zhu, Rongxi Li, Xiaoli Wu, Xiaoli Qin, Bangsheng Zhao, Futian Liu, Di Zhao

“…The brine systems of the Permian and Ordovician fluid inclusions are, respectively, dominated by CaCl2-H2O and MgCl2-NaCl-H2O. The diagenetic fluids were in the ranges of medium-low temperature and moderate-low salinity. …”
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Effect of Mining Thickness on Overburden Movement and Underground Pressure Characteristics for Extrathick Coal Seam by Sublevel Caving with High Bottom Cutting Height by Yongkang Yang, Yanrong Ma, Chunxu Ji, Tianhe Kang, Xingyun Guo

“…Some conclusions can be drawn as follows: (i) under the “beam-hinged cantilever beam rocks” structure theory, the rock pillar thickness which needs to be controlled increases linearly as a function of mining thickness is achieved, and the reason of increased of support resistance in full-mechanized caving mining in extremely thick seams is explained in the theory; (ii) based on the results of the theoretical analysis and the lab simulation tests, the law of the abutment pressure peak is inverse to the full-seam mining thickness, and the distance between abutment peak and working face is proportional to the full-seam mining thickness, that is to say that the damage range of overlying strata increased; (iii) there are three working states of loading support in extrathick coal seams, such as normal circumstance, lower main roof pressure, and higher main roof pressure, meanwhile these states keep changing; (iv) under the guarantee of stope safety conditions, due to lower support strength, it will benefit the special thick seam top-coal caving under normal circumstance; (v) increasing the supporting strength can balance the impact loading under the lower main roof pressure, guaranteeing valid support for roof strata; (vi) by releasing high pressure, due to lower production, lower recovery rate of coal and other measures guarantee the stability of the stope support in the case of the higher main roof pressure.…”
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Molecular subtype of ovarian clear cell carcinoma: an analysis of 80 Chinese patients using the TCGA molecular classification of endometrial cancer by Wei Chen, Lu Yan, Qin Li, Shuling Zhou, Ting Hou, Huijuan Yang, Shuang Ye

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Study on Acoustic Emission Characteristics and Mechanical Behavior of Water-Saturated Coal by Muhammad Ali, Enyuan Wang, Zhonghui Li, Haishan Jia, Dexing Li, Izhar Mithal Jiskani, Barkat Ullah

“…During the attenuation phase, the AE counts first decrease significantly with stress drop, but also a slight increase was observed due to the initiation of secondary cracks. …”
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Analysis and Application of the Mechanical Properties of the Karst Collapse Column Fillings by Zhibin Lin, Boyang Zhang, Xiaofei Gong, Limin Sun, Wenzhen Wang, Dafang Yang, Yanlin Yang, Ming Guo, Xia-Hui Pan

“…The larger the consolidation pressure or the smaller the moisture content, the larger the ratio. (2) With the increase of consolidation pressure or the decrease of moisture content, the uniaxial compressive strength, elastic modulus, splitting tensile strength, cohesive stress, and internal friction angle of the filling material of the KCC increase linearly, while its permeability increases exponentially. (3) When the crack field of the surrounding rocks of the stope is connected with the KCC, its filling material will continue to yield, activate, and migrate under the fluid-solid coupling effect and finally result in the lagging water inrush from the KCC.…”
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Study and valorization of a new bituminous concrete based on natural dune sand for hot and arid environments by Ahmed Berriache, Mohamed Bensoula, Mohamed Zaoui, Tahar Kadri

“…Common bituminous mixes generally use quarry sand fillers, the proportions of which are poorly controlled due to the diversity of rock deposits and their manufacturing conditions. …”
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New View on the Genesis of the Bashuihe Pluton, Laoshan Granites, China: Indications from Fluid Inclusions and H–O Isotopes by Huimin Liu, Zhaojun Song, Hongbo Yan, Wenyu Wang, Xinru Wang, Yifang Sun, Haonan Li

“…A hydrogen and oxygen isotope analysis (δD=−83.58–−67.17, δ18OH2O=0.83–0.39) revealed that the diagenetic fluids of the Bashuihe pluton represented a mixed hydrothermal solution composed of meteoric water and magmatic water. …”
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Impacts of coal fracture roughness and aperture on the seepage of injected water: An experimental study by Gang WANG, Xuechang CHEN, Hao CHEN, Qingming LONG, Yixin LIU

“…Results and ConclusionsThe results indicate that the roughness of a coal profile can be characterized using the surface height deviation (Ha), the maximum surface height (Hz), and the fractal dimension (Ds) of the 3D morphology. The seepage rate of coals decreased exponentially with an increase in Ha, Hz, and Ds. …”
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Reservoir Temperature Calculation and Modeling for Convective Geothermal Systems: Case Study of Five Major Hot Springs in Lushan, Henan, China by Wang Qi, Zhou Dongxu, Liao Jiajia, Liu Yuntao, Wang Xinyi

“…The near-surface hydrothermal thermal storage temperature is at a constant temperature of 60°C, and the shallow thermal storage temperature is calculated by K-Mg and Li-Mg geothermometers to be between 99 and 112°C. …”
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Experimental Investigation on Hydraulic Properties of Granular Sandstone and Mudstone Mixtures by Dan Ma, Xin Cai, Zilong Zhou, Xibing Li

“…The test results indicated that, due to the absence and narrowing of fracture and void during loading, the permeability κ decreases and the non-Darcy coefficient ζ increases. …”
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Tectonometamorphic evolution of a subduction plate interface at the base of the Mirdita Ophiolite (Bajram Curri, northeastern Albania) by Madeline Richter, Kilian Pollok, Kujtim Onuzi, Kamil Ustaszewski

“…Within the metamorphic sole, the temperature and degree of deformation increase towards the structural top. Shear sense indicators in calcschists of the metamorphic sole show top to the west transport of the overriding units. …”
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Pore Structure, Fractal Features, and Oil Content Evaluation of Lacustrine Shale: A Case Study of First Member of Paleogene Shahejie Formation, NE China by Enze Wang, Gang Chen, Hanqi Li, Yanchen Song, Jianwei Wang, Zhuoya Wu, Yue Feng

“…To further expand our geological understanding of lacustrine shales and provide guidance for hydrocarbon exploration, in this study, based on programmed and improved Rock-Eval pyrolysis, total organic content (TOC) measurements, scanning electron microscopy (SEM) observations, and N2 adsorption (NA) experiments, a systematic evaluation of the mineral composition, geochemical features, pore structure, and oil contents of the third member of the Paleogene Shahejie Formation (Es3) shale in the typical lacustrine hydrocarbon enrichment sag (Nanpu Sag, Bohai Bay Basin) is conducted. …”
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The Importance of Physiochemical Processes in Decarbonisation Technology Applications Utilizing the Subsurface: A Review by Ieva Kaminskaite, Sandra Piazolo, Andy R. Emery, Nicholas Shaw, Quentin J. Fisher

“…For example, geothermal energy may be extracted from hot water contained or injected into deep reservoirs and disused coal mines; CO2 may be stored within depleted petroleum reservoirs and deep saline aquifers; nuclear waste may be disposed of within mechanically stable impermeable strata; surplus heat may be stored within shallow aquifers or disused coal mines. …”
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The focal mechanism and field investigations of mining-induced earthquake by super-thick and weak cementation overburden strata fracturing by Xianxi Bai, Anye Cao, Changbin Wang, Yaoqi Liu, Chengchun Xue, Xu Yang, Yao Yang, Songwei Wang, Qi Hao

“…Abstract Mining-induced earthquake (MIE) is a non-natural earthquake induced by mining activities. …”
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The Influence of Reservoir Composition on the Pore Structure of Continental Shale: A Case Study from the Qingshankou Formation in the Sanzhao Sag of Northern Songliao Basin, NE Chi... by Jianguo Yang, Liu Wang, Shichao Li, Cheng Zuo, Fei Xiao, Yuchu Chen, Yulai Yao, Longhui Bai

“…X-ray diffraction (XRD), Rock-Eval pyrolysis, total organic carbon content (TOC), scanning electron microscopy (SEM), nitrogen gas adsorption (N2GA), and high-pressure mercury injection (HPMI) were used to clarify the composition characteristics of inorganic minerals and organic matter and determine the influencing factors of pore development in the K2qn1 shale. …”
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Review on Phase Behavior in Tight Porous Media and Microscopic Flow Mechanism of CO2 Huff-n-Puff in Tight Oil Reservoirs by Yong Tang, Jiehong Tang, Qi Liu, Yong Wang, Zigang Zheng, Yingjie Yuan, Youwei He

“…The microscopic flow mechanism during CO2 huff-n-puff in tight porous media is complicated, and the impact of molecular diffusion, gas-liquid interaction, and fluid-rock interaction on multiphase flow is significant especially in tight porous media. …”
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