Results 1 to 10 of about 272,354 (239)
Experimental study of generalized stress relaxation of rock based on 3D-DIC technology
Rock and Soil Mechanics, 2021 Based on the visual triaxial compression servo-control test system and the three-dimension digital image correlation technology (3D-DIC), the generalized stress relaxation tests under different rheological regions were carried out, and the evolution of ...
XU Jiang +5 more
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Study on coalbed methane flow characteristics based on fractal bifurcation fracture network model
Frontiers in Earth Science, 2023 The geometric structure and distribution of the fracture network significantly impact the coalbed methane flow characteristics. The indoor optical microscope test is utilized to analyze the distribution and structural characteristics of natural fractures
Shuzhen Jiang +11 more
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Experimental Determination on Shale Gas Loss During the Coring Process in Eastern Sichuan Basin
Frontiers in Energy Research, 2020 Shale gas loss by leakage directly affects the accurate measurement of shale gas content during drilling and coring. To accurately calculate shale gas loss, in combination with the actual situation of the shale coring, considering the influence factors ...
Junbo He +8 more
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A fully multifield coupling model of gas extraction and air leakage for in-seam borehole
Energy Reports, 2021 Air leakage around the in-seam borehole leads to a poor quality of gas extracted, thus gas outburst danger is difficult to eliminate but also may cause other disasters, such as coal spontaneous combustion and gas explosion.
Junxiang Zhang +4 more
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Research on determination method of effective drainage radius of gas drainage borehole
Gong-kuang zidonghua, 2020 In order to solve the problems of complex process and lower accuracy in current determination method of effective drainage radius of gas drainage borehole, a determination method of effective drainage radius was put forward, which is based on the law of ...
LIU Dianping, MA Wenwei
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Influence of Deformation and Instability of Borehole on Gas Extraction in Deep Mining Soft Coal Seam
Advances in Civil Engineering, 2021 To study the effects of the three deformation instability modes of gas drainage borehole on gas drainage, the deformation instability mechanism of soft coal seams is analyzed, three deformation instability modes are proposed for soft coal seams, namely ...
Xue-Bo Zhang +4 more
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Dynamic leakage mechanism of gas drainage borehole and engineering application
International Journal of Mining Science and Technology, 2018 Borehole leakage not only affects the gas drainage effect but also presents considerable risk to human security. For the research on the leakage mechanism of gas drainage borehole, the rheological and visco-elastic-plastic characteristics were considered
Zhang Junxiang, Li Bo, Sun Yuning
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A New Method for Horizontal Axis Wind Turbine (HAWT) Blade Optimization
International Journal of Renewable Energy Development, 2016 Iran has a great potential for wind energy. This paper introduces optimization of 7 wind turbine blades for small and medium scales in a determined wind condition of Zabol site, Iran, where the average wind speed is considered 7 m /s.
Mohammadreza Mohammadi +2 more
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Energy Science & Engineering, 2023 Gas drainage is an important measure to ensure energy safety in coal mines. However, for mines with high gas content and low permeability, the critical question is how to enhance the drainage effect of drilling.
Xi Jie +3 more
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Influence of interlayer channeling of composite reservoir on gas drainage
Meikuang Anquan, 2022 In order to investigate the influence of surrounding rock characteristics on gas drainage of through layer borehole in composite reservoir, the seepage law of gas in coal seam and rock stratum is analyzed.
ZHANG Zhiyuan +3 more
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