A New Evaluation Method for Water Blocking Performance of Coal Seam Floor: Model Construction, Case Application, and Water-Preserved Strategy by Baobin Gao, Chuangnan Ren, Shaopeng Song

“…From the perspective of the whole life cycle, determining the treatment target area, optimizing the rock formation modification and repairing materials, and enhancing the water resources carrying capacity can improve the water resistance toughness of the coal seam floor. …”
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Performance of Concrete Developed by Enhanced Gradation of Natural Fine River Sands by Partial Replacement of Waste Quarry Dust by Usman Akmal, Sana Fatima, Nauman Khurram, Qasim Shaukat Khan, Tauqir Ahmed, Hisham Alabduljabbar, Youssef Ahmed Awad

“…To alleviate the pressure on one source, it is necessary to improve the gradation of natural river sand by utilizing quarry dust obtained during the process of crushing rock into crushed stones. This study conducted detailed experimental work to enhance the gradation of natural river sand by adding normalized quarry dust. …”
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Prediction of the Location of Concealed Pluton on the Spatial Variation Characteristics of Volatile Matter in Coal Seams by Yihao Li, Jingui Zhao, Wensheng Li

“…The zonation distribution of coal seam volatile fraction data within the exploration area serves as an efficacious record of the intrusion process of the rock mass and a valuable resource for the exploration of the location of concealed plutons. …”
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Effects of Initial Porosity and Water Pressure on Seepage-Erosion Properties of Water Inrush in Completely Weathered Granite by Jinquan Liu, Weizhong Chen, Taogen Liu, Jianxin Yu, Jingliang Dong, Wen Nie

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Geochemical Characteristics and Productivity Response of Produced Water from Coalbed Methane Wells in the Yuwang Block, Eastern Yunnan, China by Mingyang Du, Xiaojuan Yao, Shasha Zhang, He Zhou, Caifang Wu, Junlong Zhao

“…The isotope characteristics of produced water are affected greatly by water-rock interaction. Combined with the enrichment mechanisms of isotopes D and 18O, we found that the water samples exhibit an obvious D drift trend relative to the local meteoric water line. …”
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Study on Fluid Front Motion of Water, Nitrogen, and CO2 during Anisotropic Flow in Shale Reservoirs by Xiangxiang Zhang, Kai Gu, Chengyu Liu, Yangbing Cao, J. G. Wang, Feng Gao

“…The fluid front motion is an important phenomenon during anisotropic fluid flow in rock engineering. The pore pressure and mechanical responses may be significantly influenced and show an obvious difference near the moving fluid front. …”
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Stress-Driven Evolution on Mismatched Ca2Co2O5 Oxide Material: From Geometry to the Electronic States by F. P. Zhang, Y. Sun, G. L. Zhang, X. Y. Shi, G. Q. Qin

“…But the covalent Co-O binding within the rock salt like CaCoO layer is enhanced. The Ca-O binding strength is insensitive to external stress. …”
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Dynamic Response Characteristics of the Structures under Excavation by High-Efficiency Blasting in the Urban Ultradeep Foundation Pit by Zhen Lei, Qing Chen, Wen Zhao, Yu-Jing Li, Zheng-Hua Gao

“…There is a “wall effect” at the supporting pile, whose propagation velocity is lower than that inside the rock mass, and the PPV is radial X > tangential Y > vertical Z. …”
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Mechanism of Surfactant Enhancement of CO2 Displacement Recovery in Interlayer Shale Oil Reservoirs by Lanlan Yao, Qihong Lei, Zhengming Yang, Youan He, Haibo Li, Guoxi Zhao, Zigang Zheng, Haitao Hou, Meng Du

“…Surfactant can improve the wettability of the reservoir and make the rock sample wet. This research can help to understand the influence of surfactant on CO2 displacement effect and reveal the mechanism of SPC displacement improving the ODE of interlayer shale oil reservoir, providing theoretical basis for the effective development of interlayer shale oil reservoir.…”
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Longyearbyen CO2 lab project—from a vision of a CO2-neutral Svalbard to a geoscience data eldorado by Kim Senger, Peter Betlem, Alvar Braathen, Snorre Olaussen, Gunnar Sand

“…The geological ingredients for successful CO2 storage are in place, comprising a ca. 300 m thick, sandstone-dominated reservoir rock capped by an impermeable mudstone-dominated succession. …”
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Modified water balance model for groundwater recharge estimations using cloud integration by Arup Kumar Das, Saurabh Kumar Gupta, Suraj Kumar Singh, Pradeep Kumar Rawat, Shruti Kanga

“…High recharge was found in Alipurduar and Jalpaiguri district because of the high rainfall but low and constant recharge potential in Bankura and Purba Bardhaman districts due to less permeable rock layers. Within MWBM, improvements in groundwater management include the use of remote sensing techniques as well as modernization of computational processes to enhance recharge estimates. …”
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Natural Frequency of Coal: Mathematical Model, Test, and Analysis on Influencing Factors by Jianping Wei, Junzhao Zhang, Zhihui Wen, Libo Zhang, Yongjie Ren, Leilei Si

“…The technology of coal rock resonance and permeability enhancement excited by vibration wave is hailed as a new technology to enhance coal seam permeability. …”
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Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia by Siong Fong Sim, Teck Yee Ling, Lee Nyanti, Norliza Gerunsin, Yiew Ee Wong, Liang Ping Kho

“…Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams. This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam. …”
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Energy efficiency of a house in Mediterranean region: insulation and glazing impact by Salaheddine Jaouaf, Bourassia Bensaad, Abdelhakim Dorbane

“…This study evaluated the effectiveness of insulation materials, which are expanded polystyrene, glass wool, rock wool, and wood fiber of varying thicknesses, and glazing in the Algerian market. …”
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Crack Initiation Behaviors of Granite Specimens Containing Crossing-Double-Flaws with Different Lengths under Uniaxial Loading by Haiyang Pan, Dawei Yin, Ning Jiang, Zhiguo Xia

“…Crack initiation is an important stage in the failure process of rock masses. In this paper, crack initiation behaviors (crack initiation model, crack initiation location, crack initiation angle, and crack initiation stress) of granite specimens containing crossing-double-flaws with different lengths were investigated using PFC2D software. …”
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Numerical Optimization of Drilling Parameters for Gas Predrainage and Excavating-Drainage Collaboration on Roadway Head by Mingkun Luo, Lei Yang, Haiou Wen, Dongsheng Zhao, Kun Wang

“…The change in borehole spacing affects the decreasing rate of gas content in the rock and coal around the roadway. Large spacing may cause an inadequate decreasing rate in the middle of the roadway, while small spacing may cause an inadequate decreasing rate in both sides of the roadway. …”
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The Effects of Precrack Angle on the Strength and Failure Characteristics of Sandstone under Uniaxial Compression by Shuai Zhang, Jinhai Xu, Liang Chen, Hideki Shimada, Mingwei Zhang, Haiyang He

“…Characterization of the mechanical properties of cracked rock masses is essential for ensuring the long-term stability of the engineering environment. …”
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Monitoring and Analysis of Circumferential Pressure for Long‐Distance Pipe Jacking Construction in Composite Strata by Yunfei Zhao, Feilun Luo, Liang Xiong

“…The results show that: by analyzing the circumferential contact pressure obtained by the wireless sensing system, the pressure distribution of the pipe in the top soft and bottom hard strata is right>left>bottom>top; in the full‐section strata, the destruction of the lubricating mud sleeve will lead to the same contact pressure on one side and the bottom of the pipe; when the pipe traverse the interfaces of different rock strata, the stability of the lubricating mud sleeve will be affected, and thus the circumferential contact pressure will be altered. …”
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Investigation of Permeability Behavior of Sandy Soils Mixed with Industrial Waste by Baki Bağrıaçık, Esra Deniz Güner

“…The geological origins of the ground and rock environments on which the structure is constructed have a very variable structure and different types of geological materials require different solutions in terms of design. …”
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Influence Factors’ Analysis of the Face-End Roof Leaks Exposed to Repeated Mining Based on Multiple Linear Regression by Qiang Li, Dezhong Kong, Guiyi Wu, Zhijie Wen, Yuqi Shang

“…The research results show that the influence degree of different factors from large to small is, respectively, mining height > tip-to-face distance > advancing speed > distance of coal seams > surrounding rock strength > support setting load. It is necessary to strengthen the coordination of all influencing factors and comprehensively control the stability of the face-end roof exposed to repeated mining. …”
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