Macro-Micro Study on Mechanical Properties of Frozen Fine Sandstone Based on DEM Mathematical Model by Maoyan Ma, Min You, Shuguang Peng, Biao Zhang, Yuan Lin

“…The study of freezing rock mechanical properties is getting more and more urgent because of coal mine construction in western China. …”
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Distribution of Trace Elements, Sr-C Isotopes, and Sedimentary Characteristics as Paleoenvironmental Indicator of the Late Permian Linxi Formation in the Linxi Area, Eastern Inner... by Linlin Wang, Yongsheng Zhang, Enyuan Xing, Yuan Peng, Dongdong Yu

“…The Late Permian on the periphery of the Songliao Basin, eastern Inner Mongolia, is an important hydrocarbon source rock system. Its sedimentary environment plays an important role in the evaluation of hydrocarbon prospects in the area. …”
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Study on Mechanical Properties and Energy Consumption of Fissured Sandstone with Different Dip Angles under Impact Load by Qi Ping, Shuo Wang, Yulin Wu, Shijia Sun, Kaifan Shen, Chen Wang, Qi Gao, Chenglong Fang

“…The influence of dip fissures on the crushing shape, dynamic compressive strength, dynamic elastic modulus, dynamic peak strain, dynamic average strain rate, dynamic stress-strain curve, and energy consumption of rock specimens was systematically analyzed. The results show that the 45° fissure angle is the best fragile angle according to the failure mode and dynamic compressive strength of the specimen and that difference in specimen failure modes specimens is attributed to the existence of fractures with different dip angles. …”
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Experimental Investigation into the Effects of Fracturing Fluid-Shale Interaction on Pore Structure and Wettability by Yan Zhang, Zhiping Li, Fengpeng Lai, Hao Wu, Gangtao Mao, Caspar Daniel Adenutsi

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A Statistical Damage Constitutive Model for Geomaterials under Plane-Strain Biaxial Stress State by Hongwei Zhang, Zhijun Wan, Chaoyi Wang, Zhaoyang Ma, Yuan Zhang, Jingyi Cheng

“…In this study, a modified statistical damage constitutive model based on Weibull distribution was established to explain the mechanical behavior of rocks under the PSBSS. The modified Wiebols-Cook criterion, Drucker-Prager criterion, and extremum method were adopted in this model to estimate the peak strength of rock, the strength level of microscopic element, and the statistical parameters of model, respectively. …”
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Landslide hazard assessment of an urban agglomeration in central Guizhou Province based on an information value method and SVM, bagging, DNN algorithm by Junhua Luo, Zulun Zhao, Wei Li, Liang Huang, Weiquan Zhao

“…Abstract The urban agglomeration in central Guizhou is located in a crustal deformation area caused by tectonic uplift between the Mesozoic orogenic belt of East Asia and the Alpine-Tethys Cenozoic orogenic belt, with high mountains, steep slopes, fractured rock masses and a fragile ecological environment; this area is the most affected by landslides in Guizhou Province, China. …”
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Numerical Investigation of the Influence of Roof Fracturing Angle on the Stability of Gob-Side Entry Subjected to Dynamic Loading by Zhibiao Guo, Lei Zhang, Zhibo Ma, Feixiang Zhong, Jingchao Yu, Siming Wang

“…Furthermore, dynamic loading was applied to research the influence of fracture of hard rock strata on the entry stability. The global model was validated with the field data. …”
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Assessment of Energy Potential and Benefit under the Ground Source Heat Pump Air Conditioning System in Anqing Area of Eastern China by Qing Zhang, Yunfeng Li, Jian Hua, Xiaonan Niu, Lili Hou, Zongfang Chen, Weiya Ge

“…In order to optimize the planning layout and geographical space development in the eastern new town of Anqing city, which can realize the transformation and upgrading of real space and urban sustainable development, the exploration for shallow geothermal energy will be carried out in this area, so as to find out the comprehensive thermophysical parameters of the shallow rock-soil body and the heat transfer capacity of the vertical heat exchanger, etc. …”
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Numerical Analysis of the Seismic Response of Tunnel Composite Lining Structures across an Active Fault by Zude Ding, Mingrong Liao, Nanrun Xiao, Xiaoqin Li

“…A series of 3D dynamic-response numerical models considering the composite structure-surrounding rock-fault interaction were established to explore the seismic response characteristics and aseismic performance of the composite structures. …”
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Experimental Study on Vibration Reduction Technology of Hole-by-Hole Presplitting Blasting by Jun Ma, Xianglong Li, Jianguo Wang, Zihao Tao, Ting Zuo, Qiang Li, Xiaohua Zhang

“…In order to effectively reduce the disturbance of the precrack blasting vibration on slope rock mass, except paying attention to the damping effect of the precrack, it is also necessary to optimize the blasting parameters and initiation mode of the precrack itself. …”
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Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area by Qiding Ju, Yu Liu, Youbiao Hu, Yuquan Wang, Qimeng Liu, Zitao Wang

“…For the Carboniferous aquifers, there is a higher dissolution of rock salt, pyrite oxidation, and cation exchange from west to east, and the desulfurization effect weakens.…”
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Using a Synthetic Borehole Model to Determine the Pore Aspect Ratio Dependence of Velocities from Acoustic Well-Logging Data by Xiao Feng, Tianyang Li, Bingrui Du, Wenxin Kong

“…Revealing the elastic wave properties of carbonate rocks with complex pore structures and improving the reliability of carbonate reservoir descriptions have always been a global challenge in the field of carbonate geophysical exploration. …”
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Effect of Axial Vibration on Sliding Frictional Force between Shale and 45 Steel by Wu Hao, Chen Ping, Liu Yang, Ma Tianshou

“…However, the Coulomb model cannot describe the sliding friction behavior between drill string and borehole rock with imposed axial vibrations. To solve this problem, a specially designed experimental setup was utilized to investigate the characteristics of axial vibrating-sliding coupling friction. …”
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"Hot Issue" no Mercado de IPO e suas Consequências para as Empresas Emitentes e Investidores: o Mercado do Reino Unido em 2000 by João Batista Amorim Toniato

“…Nesta investigação o modelo Rock que relaciona o nível de underpricing em curto prazo de IPOs com a assimetria de informação entre investidores parece trabalhar em seu oposto preciso devido ao intenso nível de especulação sobre as emissões. …”
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Geotouristic Coastal Itinerary in the South Coast of Paraíba (Northeast of Brazil) by Luciano Pereira, Arilde Alves

“…The places of interest are Amor Rock, Tombolo of Coqueirinho, Canyon of Coqueirinho, Cones of Dejection of Coqueirinho, Coqueirinho Structural High, Tambaba Beach and ‘Maceió’ of Mucatu. …”
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Coal and Gas Outburst Affected by Law of Small Fault Instability during Working Face Advance by Jianyun Lin, Yujun Zuo, Kai Zhang, Wenjibin Sun, Biao Jin, Taotao Li, Qing-gang Chen

“…The movement rate of overburden strata in the small fault zone increases along with the rising of the small fault throw, which increases the energy transferred to the coal seam from the surrounding rock under the effect of the small fault. Hence, the effect of small faults on the working face on coal and gas outbursts was positively correlated with the small fault throw. …”
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Assessment of Land Use and Land Cover Changes in Afi River Forest Reserve Cross River State, Nigeria by C. I. Duru, U. D. Chima, C. Fredrick

“…Six distinct land use types-dense vegetation, farmland/sparse vegetation, built-up area, bare land, rock, and water bodies were identified. A significant decline in dense vegetation from 312.14 km² in 1992 to 271.28 km² in 2022 was observed while farmland, built-up areas, and bare land increased. …”
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Seismic Methods in Geothermal Water Resource Exploration: Case Study from Łódź Trough, Central Part of Poland by Tomasz Maćkowski, Anna Sowiżdżał, Anna Wachowicz-Pyzik

“…For decades, the geophysical surveys have been the trusty recognition methods of geological structure and petrophysical parameters of rock formations. Thus, they are widely applied by petroleum industry in exploration of conventional and unconventional (shale gas/oil, tight gas) hydrocarbon deposits. …”
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A New Method for Predicting the Permeability of Sandstone in Deep Reservoirs by Feisheng Feng, Pan Wang, Zhen Wei, Guanghui Jiang, Dongjing Xu, Jiqiang Zhang, Jing Zhang

“…Capillary pressure curve data measured through the mercury injection method can accurately reflect the pore throat characteristics of reservoir rock; in this study, a new methodology is proposed to solve the aforementioned problem by virtue of the support vector regression tool and two improved models according to Swanson and capillary parachor parameters. …”
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Damage and Failure Evolution Mechanism for Coal Pillar Dams Affected by Water Immersion in Underground Reservoirs by Fangtian Wang, Ningning Liang, Gang Li

“…This model provides a platform for analyzing the characteristics of fracture development in surrounding rock in active mines and the coupled development of crack fields and seepage fields in coal pillar dams. …”
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