Energy and CO2 fluxes in the early stage development of reclaimed and unreclaimed post-mining areas by Aysan Badraghi, Ondřej Mudrák, Jiří Kučera, Leonardo Montagnani, Jan Frouz

“…Our novel results show that early post-coal mining sites were net sources of CO2 but became carbon sinks on a monthly scale within four years, highlighting the rapid ecosystem recovery at both sites. …”
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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

“…Karst collapse pillars (KCPs) frequently cause severe groundwater inrush disasters in coal mining above a confined aquifer. An accurate understanding of the damage and fracture evolution, permeability enhancement, and seepage changes in KCPs under the combined action of mining-induced stress and confined hydraulic pressure is of great significance for the early prediction and prevention of groundwater inrush from KCPs in coal seam floors. …”
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The Key Stratum Structure Morphology of Longwall Mechanized Top Coal Caving Mining in Extra-Thick Coal Seams: A Typical Case Study by Fulian He, Xiaobin Li, Wenrui He, Yongqiang Zhao, Zhuhe Xu, Quansheng Li

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Attribution analysis of water-sediment variation under the influence of climate change and human activities in the Kuye River Basin by Jiankang ZHANG, Jiping WANG, Jiansheng SHI

“…It is necessary to pay more attention to the combined effects of ecological restoration and coal mining activities on water resources change.…”
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Advances and trends of modern and contemporary research on the geology of coal-measure minerals in China by Yong QIN

“…It is recommended to focus on four aspects in future geological study: the precise exploration and exploitation of coal resources, the exploration and orderly production of coal-measure gas, the exploration and exploitation of critical metals, and the geological guarantee for in situ fluidized coal mining. Additionally, it is necessary to pay attention to the accumulation mechanisms and resource prediction methods for helium in coal measures.…”
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Reclaiming Subsidized Land: An Evaluation of Coal Gangue Interlayers by Yuling Gong, Zhenqi Hu, Kevin McSweeney

“…Rehabilitation of areas impacted by subsidence following coal mining is a pressing need in eastern China, especially where availability of suitable soil material is limited. …”
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Failure Behavior and Energy Storage and Release of Hard Coal under Different Static and Dynamic Loading States by XianJie Hao, GuangYao Pan, Chaoxing Ma, Yingnan Wei, Zeyu Chen

“…The research results play an important guiding role in further understanding the mechanism of coal mine dynamic disasters.…”
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Experimental and simulation study on tensile mechanical characteristics and crack development law of sandstone after thermal treatment by Jing Yang, Sheng-Qi Yang, Guang-Jian Liu, Bo-Wen Sun, Wen-Ling Tian, Jin-Zhou Tang

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Removal of Cd(II) and Cu(II) from Aqueous Solution by Na+-Modified Pisha Sandstone by Xia Wang, Yongxing Cui, Qi Peng, Chenbin Fan, Zhiqin Zhang, Xingchang Zhang

“…Heavy metals have caused serious environmental issues, which are enriched during open-cast coal mining. It is urgent to develop sustainable remediation materials to protect and restore the contaminated soil and aquifers in mining areas. …”
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Experimental Study of the Influence of Moisture Content on the Mechanical Properties and Energy Storage Characteristics of Coal by Nan Liu, Chuanming Li, Ruimin Feng, Xin Xia, Xiang Gao

“…Rock burst occurs frequently as coal mining depth goes deeper, which seriously impacts the safety production of underground coal mines. …”
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Study on the Fractal Characteristics of Coal Body Fissure Development and the Law of Coalbed Methane Migration of around the Stope by He Yang, Zhen Liu, Danliang Zhu, Wenzhi Yang, Dawei Zhao, Wendi Wang

“…In view of this, this paper chooses Qingdong Coal Mine protection layer mining and CBM extraction field practice as the research background. …”
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Efficient Excavation and Support Cooperation Technology for Surrounding Rock of Deep Buried Long-Distance and Large Section Gob-Side Roadway: A Case Study by Houqiang Yang, Changliang Han, Nong Zhang, Xudong Li, Yitao Liu, Wentao Liu, Kai Song, Yuxin Guo, Wei Yao

“…The gob-side roadway technology is widely used in coal mining in China, as it can improves the recovery rate of coal resources and alleviate the shortage of mining replacement. …”
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Three-Dimensional Reconstruction and Numerical Simulation Analysis of Acid-Corroded Sandstone Based on CT by Zizhen Miao, Shuguang Li, Jiangsheng Xie, Runke Huo, Fan Ding, Hongtao Zhu, Xingzhi Yang, Xiaoke Li

“…Due to its unique technological characteristics, coal mining and production often encounter an acid corrosion environment caused by acid gases. …”
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Field Study on the Law of Surface Subsidence in the High-Intensity Fully Mechanized Caving Mining Working Face with Shallow Thick Bedrock and Thin Epipedon in Hilly Areas by Yi Tan, Hao Cheng, Shuang Gong, Erhu Bai, Minchao Shao, Bingyuan Hao, Xiaoshuang Li, Han Xu

“…The measured surface stabilization time of the P2 working face is only 20% of the calculated value in the Specification for Coal Pillar Reservation and Coal Mining under Buildings, Water Bodies, Railways, and Main Shafts (hereinafter referred to as the Specification), indicating that the specification's empirical formula is inapplicable to the calculation of surface stabilization time of the P2 working face.…”
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Spatiotemporal variability of groundwater chemistry, source identification and health risks in the southern Chinese Loess Plateau by Zijun Li, Qingchun Yang, Chuan Xie, Hongyun Ma, Bin Wu, Yanli Wang

“…The anthropogenic sources including agricultural activities (20.7 % and 21.8 % in JH-U and ML) and coal mining activities (20.1 % and 29.5 % in JH-U and ML) also played a role in affecting groundwater quality. …”
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Mine Flooding History of a Regional Below-Drainage Coalfield Dominated by Barrier Leakage (1970–2014) by Joseph J. Donovan, Eric F. Perry

“…A 44-year record of water level fluctuations in a series of adjacent closed underground mines documents the history of closure and mine flooding in the Fairmont Coalfield, one of the oldest coal mining districts in the Pittsburgh coal basin, West Virginia, USA. …”
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Rebound Mechanism and Control of the Hard Main Roof in the Deep Mining Roadway in Huainan Mining Area by Denghong Chen, Chao Li, Xinzhu Hua, Xiaoyu Lu, Yongqiang Yuan, Chen Li

“…Taking the occurrence conditions of the hard main roof in the deep 13-1 coal mining roadway in Huainan mining area as the research object, based on the mechanical parameters of the surrounding rock and the stress state of the main roof obtained by numerical simulation, a simply supported beam calculation model was established based on the damage factor D, main roof support reaction RA, RB, and critical range C (9 m) and B (7 m) at the elastoplastic junction of the solid coal side and mining face side (hereinafter referred to as “junction”). …”
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The study of mechanical properties and fracture evolution of coal-rock masses under hard roof-soft floor conditions by Jiajun Li, Yin Zhang, Chenchen Yang, Jiaqi Liu, Yu Zhou, Chunlin Li

“…Abstract As the depth of coal mining in China continues to increase, the fracturing of coal rock masses has an increasingly complex impact on the surrounding rock roadways. …”
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Advanced modeling of seepage dynamics and control strategies in thick coal seams under high-confined aquifer conditions: A case study by Xuyang Chen, Xufeng Wang, Dongsheng Zhang, Liang Chen, Jiyao Wang, Zechao Chang, Dongdong Qin, Hao Lv

“…Therefore, unraveling the floor failure mechanism is particularly important for safe coal mining above the high-confined aquifer. This paper estimates the depth of the baseplate failure to be 18.4–27.3 m by combining network parallel electrical methods with drilling visualization technology. …”
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Promising Directions in Chemical Processing of Methane from Coal Industry. Part 4. Long-term Stability Test by Е.V. Matus, O.V. Tailakov, O.B. Sukhova, A.V. Salnikov, O.A. Stonkus, M.A. Kerzhentsev, S.R. Khairulin, Z.R. Ismagilov

“… For the processing of coal mine methane into hydrogen-containing gas, a catalytic process of methane tri-reforming was studied under long-term testing conditions (800 ᵒC, 100 h). …”
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