Catastrophe Mechanism of Stress-Fissure Coupling Field in Mining Close Distance Seams in Southwest China [PDF]
Geofluids, 2021 For the sake of studying the catastrophe mechanism of stress-fissure coupling field in mining close distance seams in southwest China, a test working face in Guizhou province in southwest China is adopted and researched by the methods of numerical ...
Suo Jie +5 more
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Study on overlying rock movement and mine pressure behavior in shallow-buried close coal multi-seam mining [PDF]
Alexandria Engineering JournalIn order to reveal the failure morphology and mine pressure behavior of overlying strata during shallow buried close multi-coal seam mining, this research takes the Shenmu Zhangjiamao mining area as the engineering background, the study of overlying rock
Shaoping Hu, Tianbiao Yu
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工程科学学报, 2022 To explore the reasonable width of the coal pillar and surrounding rock control technology of the mining roadway in a close-distance coal seam working face, this paper took the mining of No.10 and No.11 coal seams of the Huipodi coal mine as the ...
Hui CHENG +4 more
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Pressure relief and gas outburst prevention in ultra close coal seams a case study on overlying underlying interactions [PDF]
Scientific ReportsUltra-close coal seams are adjacent coal seams in a mining area with a spacing of less than 5 m. They have strong interactions during mining. Due to the small distance between layers, mining the upper coal seam creates a pressure relief zone.
Songjiang Sang, Jinguo Lv
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Overlying strata movement with ground penetrating radar detection in close-multiple coal seams mining [PDF]
International Journal of Distributed Sensor Networks, 2019 Longwall mining is a productive mining method that has been widely used in China, the United States, Australia, and Europe. However, due to the subsidence caused by coal mining activities, the phenomenon is complex, longwall mining brings the overburden ...
Yang Li +4 more
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Analysis of Dynamic Evolution of Surrounding Rock Movement and Stress-Fracture in the Upward and Repeated Mining of Close-Distance Coal Seams [PDF]
Advances in Civil EngineeringThe distribution of mining-induced stress and the resulting rock fractures are two crucial factors affecting mineral extraction in protective layer mining.
Ningbo Peng +7 more
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Study on the influence of close range coal seam mining relationship on the deformation law of surrounding rock in lower roadway [PDF]
Gong-kuang zidonghuaWhen the mining relationship between the upper coal seam working face and the lower coal seam roadway in the close distance coal seam changes, the deformation and instability mechanism of the surrounding rock of the roadway will be more complicated.
ZHANG Xiaojun, SUN Jiarui, MA Yang
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Failure Mechanism and Control of Lower Retracement Channel in Close‐Distance Double‐Thick Coal Seams [PDF]
Shock and Vibration, 2021 Under the condition of close‐distance double‐thick coal seams’ mining, the serious strata behavior occurred in the lower retracement channel, which is affected by the double disturbance with upper coal‐pillar static load and mining dynamic pressure.
Fulian He +4 more
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Stress distribution and roadway layout under narrow coal pillars in close coal seam group [PDF]
, 2022 Aiming at the stress distribution and roadway layout problems under the narrow coal pillars in close distance coal seam group, theoretical analysis, numerical simulation and field measurement are used to analyze the stress distribution characteristics of
MENG Tao, LIU Yongqian, HUO Zhonggang
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Joint ground and underground gas extraction mode and its key technology for outburst coal seam group
Meitan xuebao, 2023 China’s coal seams are characterized by high ground stress, low permeability, high gas pressure, and high gas content, and their gas outburst hazards are serious. Therefore, some effective gas extraction measures must be taken for coal seams.
Yongjiang ZHANG +5 more
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