Results 11 to 20 of about 12,068 (222)
Coupling control on pillar stress concentration and surface cracks in shallow multi-seam mining
International Journal of Mining Science and Technology, 2021 In order to ensure safe mining and reduce surface damage in shallow multi-seam mining, the failure characteristics of interburden strata with different coal pillars offset distances between pillars in the upper and lower seams, the distribution ...
Qingxiang Huang +3 more
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International Journal of Mining Science and Technology, 2015 Aiming at the shallow depth seam proximity beneath a room mining goaf, due to that the shallow depth seam is exploited using the longwall mining and overlain by thin bedrock and thick loose sands, many accidents are likely to occur, including roof ...
Fangtian Wang +3 more
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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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Meikuang Anquan, 2023 In order to study the overburden failure characteristics and surface subsidence law of shallow buried coal seam under the condition of double coal seam mining, based on the geological conditions of typical shallow buried coal seam in Yushenfu Mining Area,
CAO Yanbo, FAN Wen, TAO Yiquan, CHENG Guang, LIU Kui, PENG Min
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Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement
Geophysical Monograph Series, Page 27-82., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm +2 more
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Meitan kexue jishu, 2023 The high-intensity mining of shallow-buried coal seams leads to the fracture of the bearing strata to form a combined bearing structure, which complicates the distribution of cracks in the overlying rock and causes serious damage to the surface. In order
Jie ZHANG, Yifeng HE
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Numerical Simulation on Instability Mechanism of Section Coal Pillar in Shallow Buried Coal Seams
Tehnicki vjesnik - Technical Gazette, 2022 There is abundant coal resource of Jurassic period in Yulin City, and the problem of shallow buried coal seams mining will occur in every mine area. FLAC3D is used to analyze the plastic failure, deformation characteristic, and vertical stress on shallow buried coal seams mining, based on north No.
Shang*, Tielin +4 more
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Roof weighting and support of a largely mined shallow coal seam
SN Applied Sciences, 2022 AbstractTo study roof weighting and the support of a largely mined shallow coal seam, the hydraulic support resistances in both small and large periodic weightings were derived by different theoretical formulae. Support working resistances of the 12,401 mining face in small and large periodic weighting were 10,442 and 17,064 kN, which represented a ...
Ming Sun +5 more
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Geofluids, 2021 Liquid nitrogen freeze-thaw fracturing has attracted more and more attention in improving the coal reservoir permeability. In order to reveal the impact of liquid nitrogen freeze-thaw on the multiscale structure of deep coal, the multiscale structure ...
Yingfeng Sun +4 more
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Advances in Civil Engineering, 2021 In Northwest China, rainfall is low, water resources are scarce, and the ecological environment is fragile. For shallow-buried and close-spaced coal seams with a thickness of upper coal bed >60∼70 m, the water-conducting fissures of the overlying rock ...
Zhiyuan Jin, Tao Peng
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