Results 11 to 20 of about 3,852 (269)
Frontiers in Earth ScienceUnderstanding the collapse mechanisms of shallow, multi-layered, weakly cemented overburden is key to safe and efficient coal mining in central and western China.
Zhenhua Li +10 more
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Stress Distribution and Failure Characteristics of Stope Overburden of an Inclined Coal Seam [PDF]
Geofluids, 2021 The stress distribution, failure depth, and shape and range of overlying strata of the stope are important bases for the prevention of roof water hazards and determination of reasonable locations of roof roadways. Based on the hydrogeological data of the E9103 workface, FLAC numerical simulation software was used to establish a numerical calculation ...
Xin Liu, Jian Sun, Yong Yang
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Mechanical Properties and Failure Mechanism of the Weakly Cemented Overburden in Deep Mining
Minerals, 2022 With increases in the mining depth and area in the Ordos coal field, the failure law of the super thick sandstone in the Zhidan group leads to frequent disasters, such as rock bursts and mine earthquakes, which have become a significant issue, restricting large-scale continuous mining.
Guojian Zhang +5 more
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Calculation of Subsidence due to Longwall Mining with Overburden Grouting and Its Application
Geofluids, 2022 This paper presents a prediction method of mining-induced surface subsidence due to longwall mining with overburden grouting, which has been proven an effective method to mitigate the overburden failure. This paper proposes a partial overburden grouting (
Hewen Ma, Yadong Ji, Shidong Wang
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Advances in Civil Engineering, 2022 Taking two typical stopes with variable length of working face inclined length from small to large and from large to small as the research object, the stope overburden structure model under different face length conditions is constructed through ...
Xinfeng Wang +5 more
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Advances in Civil Engineering, 2019 There are risks of water burst and sand inrush in the working face of the Northwest Mining Area in China. Based on the 22407 working face of Halagou coal mine, the evolution characteristics and mechanism of a two-zone failure mode of the overburden ...
Daming Yang, Wenbing Guo, Yi Tan
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Structure and deformation measurements of shallow overburden during top coal caving longwall mining
International Journal of Mining Science and Technology, 2017 Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining.
Sheng Li +5 more
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Evolution Characteristics of Overburden Instability and Failure under Deep Complex Mining Conditions
Geofluids, 2022 Aiming at the problems of intensified deformation and serious stress damage of stope overburden during mining in deep typical geological environment, taking the deep mining face of a mine in the northwest as the research background, the characteristics and influencing factors of overburden collapse in deep geological environment are analyzed, a ...
Xinfeng Wang +4 more
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Fluids, 2019 This study investigated the impact of overburden height on the hydraulic fracturing of a concrete-lined pressure tunnel, excavated in intact rock, under steady-state and transient-state conditions.
Moses Karakouzian +2 more
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Shock and Vibration, 2021 In order to explore the stability of overburden rock and the development height of water flowing fractured zone in roadway filling mining, based on the movement and deformation mechanism of overburden rock, the mechanical analysis of overburden stability
Yu Dong +3 more
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