Results 11 to 20 of about 5,124 (199)
Study on Roof‐Coal Caving Characteristics with Complicated Structure by Fully Mechanized Caving Mining [PDF]
Shock and Vibration, 2019 With mining technology and mechanization degree being improving, fully mechanized caving mining technology (FCM) has become a main method for thick coal seam extraction in China. However, roof‐coal caving characteristics in turn restrict its recovery efficiency, especially for the coal seam with complicated structure (CCS), that is, the coal seam ...
Yunpei Liang +6 more
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Deformation Mechanism of the Coal ahead of Fully Mechanized Caving Face under High‐Intensity Mining Condition [PDF]
Advances in Civil Engineering, 2021 In order to study the coal deformation and failure mechanism in fully mechanized caving face under the high‐intensity mining, based on the equivalent mechanical model of transversely isotropic cylindrical coal with fractures, the equivalent equations for axial, radial, and volume strains of coal sample loaded in linear elastic and plastic stages were ...
Can Zhao +6 more
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Energy Exploration & Exploitation, 2022 In view of solving the problems of large top coal loss and low recovery rate in the traditional caving process of horizontal section fully mechanized caving mining, taking the fully mechanized caving face of steeply inclined and extra-thick coal seam in Yimen Coal Mine as the engineering background and the research method of numerical simulation and ...
Fengfeng Wu +7 more
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Cutting‐Caving Ratio Optimization of Fully Mechanized Caving Mining with Large Mining Height of Extremely Thick Coal Seam [PDF]
Advances in Civil Engineering, 2019 Serious rib spalling and low recovery rate problems caused by the poor top‐coal caving property (TCCP) were investigated in fully mechanized caving mining with large mining height (FMCMLMH) of extremely thick coal seam. For this aim, theoretical calculation, numerical simulation, and engineering application were applied to study the reasonable cutting ...
Kai Wang +3 more
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Mechanical Analysis of Mining Stress Transfer on Isolated Island Face in Extra-Thick Fully Mechanized Top-Coal Caving Mining [PDF]
Geofluids, 2020 The mining spatial structure of isolated island face in extra-thick fully mechanized top-coal caving mining is unique, which leads to a complex mining stress distribution and serious safety hazards. In this study, combined with a specific engineering example, the mining stress distribution characteristics of isolated island face are expounded, and a ...
Min Tu, Qingwei Bu, Baojie Fu, Yu Wang
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Applied Sciences, 2023 Overlying strata movement has an important effect on the stability of coal along goaf. In order to study the impact of overlying strata movement on the stability of coal during fully mechanized top-coal caving mining, a simulation experiment was conducted on the Liuxiang Coal Mine using digital image correlation (DIC) and stress electric measurement ...
He Ren +4 more
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Mining‐Induced Damage Characteristics of Floors during Fully Mechanized Caving Mining: A Case Study [PDF]
Advances in Materials Science and Engineering, 2018 To study the mining‐induced damage characteristics of floors during fully mechanized mining, in situ measurements were performed using the hollow inclusion strain sensors in the No. 100502 (80 m, 180 m) mining face of the Yitang Coal Mine in the Huoxi coal field in the Shanxi Province of China.
Yulong Jiang +3 more
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Sustainability, 2022 In view of the occurrence conditions of inclined coalbed, the deformation and failure characteristics of the main roof will affect the safe production of the working face. Therefore, the study of the deformation and failure characteristics of the main roof in the inclined coalbed has guiding significance for the control of surrounding rock.
Hualei Zhang +3 more
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Energy Science & EngineeringReal‐time monitoring of the coal caving process in fully mechanized mining is crucial for achieving intelligent and efficient top‐coal caving. While the coal gangue identification method, employing vision and deep learning, has advanced in the realm of ...
PengFei Shan +3 more
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Advances in Civil Engineering, 2018 The multichannel retracement in the auxiliary laneway has become one of the key technologies in the high‐yield and high‐efficiency production of large and extra‐large coal mines in western China. For the successful application of this technology, the control of retracement channel deformation is decisive. This paper takes the support of the retracement
Liu Fei, Zhongxi Jiang
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