Prediction of rock mixed ratio in image-based intelligent control of drawing opening in longwall top coal caving face – Part I: Surface rock mixed ratio of coal flow [PDF]
Meitan xuebaoImage-based intelligent control of longwall top coal caving (LTCC) is a critical technology for achieving intelligent coal mining. Its core lies in monitoring the rock mixed ratio (RMR) of coal flow to control the drawing opening.
Jiachen WANG +5 more
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Analysis of fracture mode transformation mechanism and mechanical model of rock strata with different thicknesses [PDF]
Meitan xuebao, 2023 The deformation, fracture, and movement mode of rock strata are greatly related to underground pressure, surface subsidence, etc. The fracture modes of the thin rock stratum and thick rock stratum are significantly different.
Jianping ZUO +3 more
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Total loads modeling and geological adaptability analysis for mixed soil-rock tunnel boring machines
Underground Space, 2022 Rock-soil interface mixed ground (RSI) is often encountered in tunnel construction. The excavation loads of tunnel boring machines (TBMs) are controlled by the interaction characteristics between TBM and rock/soil layers. The different properties of rock
Wencong Qi +4 more
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A Novel Method of On-Line Coal-Rock Interface Characterization Using THz-TDs
IEEE Access, 2021 The core problem in unmanned/intelligent working face of coal mining is the automatic adjustment of shearer arm where the coal-rock interface detection is the key.
Jing Yu +3 more
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Breakage law and fractal characteristics of broken coal and rock masses with different mixing ratios during compaction [PDF]
Energy Science & Engineering, 2019 AbstractBroken coal and rock masses are the major part of the goaf. The compaction characteristics of coal and rock masses and the breakage law of whose particles during compaction exert an important influence on various aspects including control of strata motion, prediction of surface subsidence, and backfill mining.
Bo Li +3 more
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Acid rock drainage passive remediation: Potential use of alkaline clay, optimal mixing ratio and long-term impacts [PDF]
Science of The Total Environment, 2017 Acid rock drainage (ARD) is one of the most adverse environmental problems of the mining industry. Surface and ground water affected by this pollution are characterized by their acidity and the high content of sulfates and metals/metalloids. In this study, alkaline clay (AC), an industrial waste with a high alkalinity, which is utilized in the alumina ...
Fernando, Plaza +4 more
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Toxics, 2023 The purpose of this experiment was to investigate the feasibility of treating arsenopyrite-containing excavated crushed rock (ECR) in cropland by examining the amounts of arsenic released from various sizes of ECR mixed with soils at different ratios under three water levels using a batch incubation experiment.
Kyo-Suk Lee +2 more
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Energy Science & Engineering, 2022 The use of radial jet drilling (RJD) to exploit unconventional natural gas is an attractive study area. A self‐propelled bit enormously affects the drilling efficiency.
Peng Du +3 more
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Inżynieria Mineralna, 2023 The coal mining industry in Quang Ninh province is primarily focused on serving thermal power plants which has resulted in a substantial amount of waste rock and ash. This way has not only narrowed the used land but also had a negative impact on the environment.
Phi Hung NGUYEN +2 more
openaire +1 more source
Response of soil structure and crop yield to soft rock in Mu Us sandy land, China
Scientific Reports, 2022 The sandy land leaks water and fertilizer, and is seriously degraded, while the soft rock has a special depression structure, which plays a role in retaining water and fertilizer.
Jian Zhang, Zhen Guo
doaj +1 more source