Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face [PDF]
International Journal of Environmental Research and Public Health, 2023 One of the primary factors affecting safe and effective mining in fully mechanized mining faces with large mining heights is coal wall sloughing. This paper establishes the mechanical model of the coal wall and uses the deflection theory for the mechanics of materials to find the maximum point of the deflection of the coal wall, which is the most ...
Xue-Long Li +2 more
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Coal Wall Spalling Mechanism and Grouting Reinforcement Technology of Large Mining Height Working Face [PDF]
Sensors, 2022 To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical ...
Hongtao Liu +8 more
doaj +5 more sources
Research on Overburden Movement Characteristics of Large Mining Height Working Face in Shallow Buried Thin Bedrock [PDF]
Energies, 2019 The overburden movement of the large mining height working face of shallow buried thin bedrock (SBTB) is a complex engineering problem with “time-space-intension”, which is of great significance to realize efficient and safe mining in the ...
Qingxiang Huang, Yanpeng He
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Floor Disturbance and Failure Characteristics of Super-Large Mining Height Working Face
Geofluids, 2022 The failure depth of the working face floor caused by mining is a key parameter to predict water inrush from the working face floor. Extensive research has been conducted on the floor failure zone of the working face. However, in recent years, there have
Cunjin Lu +5 more
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The Roof Safety under Large Mining Height Working Face: A Numerical and Theoretical Study
Minerals (Basel, Switzerland), 2022 As an important technology of thick coal seam mining, fully mechanized mining with a large mining height has high mining efficiency. In order to study the roof safety control of large mining height working face, the 122106 working face of Caojiatan coal mine is taken as the engineering background.
Yuantian Sun, Li Guichen, Xiaofang Wo
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Study on coal wall spalling mechanism of large mining height working face based on folding mutation theory. [PDF]
Sci RepAiming at the unclear mechanism behind the sudden instability of coal wall spalling, this study takes a fully-mechanized mining face with large mining height as an example.
Li G +5 more
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Research on Technology of Supporting in Super-Large Section Cut in Working Face with Large Mining Height [PDF]
Advances in Civil Engineering, 2021 For the support problem of the super-large section cut in working face with large mining height, the 1105 cut pilot chamber of Zhaogu No. 2 Mine, the roof strata structure detection and the strata movement rule research were conducted.
Zhicheng Ren, Minghui Zuo
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Characteristics of Overburden Failure and Fracture Evolution in Shallow Buried Working Face with Large Mining Height [PDF]
Sustainability, 2021 In order to solve the issues of uncertain overburden failure height and water loss at the Daliuta coal mine, the collapse characteristics of overburden and the development height of water-conducting fractured zone were studied by using physical modeling, FLAC 3D numerical simulation, and field observation, which were used to verify each other. In order
Shi, Xiuchang, Zhang, Jixing
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Sustainability, 2023 Coal mining has gradually entered the deep mining era, and large-height mining is an important way to mine thick coal seams in the deep. The high coal wall will inevitably make the distribution of the overburden structure in the coal mining face more complicated, and the large buried depth will also cause more intense mine pressure.
Haijian Su
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The Effect of Joint Damage on a Coal Wall and the Influence of Joints on the Abutment Pressure on a Fully Mechanised Working Face with Large Mining Height [PDF]
Shock and Vibration, 2021 Coal wall spalling is regarded as a key technical problem influencing safe and efficient mining of large-mining-height working faces while the distribution of abutment pressure within the limit equilibrium zone (LEZ) influences coal wall spalling within ...
Weibin Guo, Shengwei Zhang, Yuhui Li
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