Results 11 to 20 of about 181,059 (277)
Energy Science & Engineering, 2023 The study aimed to examine the problem of the abandoned mine water and harmful gas downflow from the overlying Jurassic of Tongxin coal mine in the Datong mine area, China. A theoretical analysis, physically similar simulation, and field measurement were
Wenqiang Wang +3 more
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Study on Size Optimization of a Protective Coal Pillar under a Double-Key Stratum Structure
Applied Sciences, 2022 Because of the problem that the size of a coal pillar is difficult to determine and it is easy to waste coal resources, taking the Sangou Xindu coal industry as the engineering background, this paper examined the roof cutting and pressure relief technology of small coal pillar gob-side entry driving by means of theoretical analysis, laboratory ...
Daming Zhang, Hui Zhao, Gang Li
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Frontiers in Earth Science, 2023 Thick and hard key stratum working faces are characterized by frequent mine tremors and significant ground tremors during mining which seriously threaten the safety production of the mine.
Gaoang Wang +12 more
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The dynamic impact of rock burst induced by the fracture of the thick and hard key stratum
Procedia Engineering, 2011 AbstractTo reveal the dynamic impact of rock bursting induced by the thick and hard roof of gravel as key stratum fractured, based on the key strata and rock control theories, combined with the mechanical load-based dynamic loading with the Law of Conservation of Energy in a system, this paper analysed the static stability and the processing of energy ...
Xiaojun, FENG +5 more
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Geofluids, 2022 Mastering the formation mechanism and dynamic evolution pattern of bed separation zone during repeated mining is the key to the success or failure of separation grouting injection technology. Taking a mine in Ningdong as the engineering background, using
Jianshuai Ji +6 more
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Geofluids, 2021 Solid backfill coal mining (SBCM) is a green mining technology which can effectively alleviate the environmental problems induced by traditional coal mining techniques, such as surface subsidence, water resources loss, coal gangue occupation, and ...
Chao Ma +5 more
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“Four Zones” control model and application for surface subsidence of bed separation grouting mining
Meitan kexue jishu, 2023 The grouting technology of bed separations has been proved to be a new method which can meet the requirements of non-destructive mining and solid waste reduction.
Lei HAN +6 more
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The corresponding relationship between the change of goaf pressure and the key stratum breaking [PDF]
Journal of Geophysics and Engineering, 2019 Abstract Existing studies mostly focus on the stress change of coal in front of a goaf, but rarely conduct field monitoring on the internal pressure of a goaf, primarily due to the complex environment and other restrictive conditions of goafs.
Jianlin Xie, Jialin Xu
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The Study of Key Stratum Location and Characteristics on the Mining of Extremely Thick Coal Seam under Goaf [PDF]
Advances in Civil Engineering, 2021 The basis of traditional ground pressure and strata control techniques is the key strata theory, wherein the position of the key stratum can easily be determined for coal seams with regular thickness and without goaf. However, in the case of mining ultrathick coal seams underneath goaf, the traditional methods used for the calculation of key stratum ...
Gaochuan Guo, Yongkang Yang
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Large-scale Parallel Stratified Defeasible Reasoning [PDF]
, 2012 We are recently experiencing an unprecedented explosion of available data from the Web, sensors readings, scientific databases, government authorities and more.
Antoniou, Grigoris +4 more
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