Methodological procedure for selection the type and construction of self-propelled hydraulic support for coal excavation on the example of the coal deposit 'Poljana' [PDF]
, 2018 For the application of a wide forehead method, decisive is an assessment, respectively, selection of the type and construction of self-propelled hydraulic support, both for horizontal and vertical excavation concentrations.
Dramlić, Dejan +3 more
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Discussion on stability analysis and support technology of surrounding rock of gob-side entry retaining [PDF]
, 2019 In order to further analyze the stability and control mechanism of surrounding rock in the gob-side entry retaining, the slip instability coefficient k1 and compression failure coefficient k2 are proposed by the mechanical analysis of the established ...
Huiqiang Duan, Wenxiang Zheng
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Paste Filling Technology and Its Application in Fully Mechanized Caving Mining Under Aquifer
Meikuang Anquan, 2020 In view of the problem that water inrush is easy to occur in the mining of coal seam under aquifer, taking a mine in Shaanxi Province as an engineering background, this paper proposes a paste filling technology behind transitional support in fully mechanized top-coal caving mining, expounds its technical principle and technological process, and ...
openaire +1 more source
Control Mechanism of Surface Subsidence and Overburden Movement in Backfilling Mining based on Laminated Plate Theory [PDF]
, 2017 The backfilling mining technology is a type of high-efficiency coal mining technology that is used to address the environmental issues caused by the caving mining technology. In this paper, the mechanical model of symmetrical laminated plate representing
Feng Du +5 more
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Key technologies and practices for safe, efficient, and intelligent mining of deep coal resources
Meitan kexue jishuThe geological conditions of deep coal resources are complex, and intelligent mining is the only way for the safe, efficient, and green development of deep coal resources. The complete set of intelligent mining technology and equipment that adapts to the
WEI LI, Xikui SUN
doaj +1 more source
Simplified Cost Models For Underground Mine Evaluation: A Handbook for Quick Prefeasibility Cost Estimates [PDF]
, 2020 This handbook provides simplified cost models for evaluating underground mines. Regression analysis is used to generate capital and operating cost equations for each model in the form Y = AXB, where Y is the cost estimated and X is the assumed production
Camm, Thomas W., Stebbins, Scott A.
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Distribution of Side Abutment Stress in Roadway Subjected to Dynamic Pressure and Its Engineering Application [PDF]
, 2015 The borehole stress-meter was employed in this study to investigate the distribution of the side abutment stress in roadway subjected to dynamic pressure.
Jiang Zhigang +4 more
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An Innovative Approach for Gob-Side Entry Retaining With Thick and Hard Roof: A Case Study [PDF]
, 2018 An innovative roadway layout in a Chinese colliery based on gob-side entry retaining (GER) with thick and hard roof (THR) was introduced. Suspended roof is left with a large area in GER with THR, which leads to large area roof weighting (LARW).
Hai Wu +6 more
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Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining [PDF]
Since the 14th Five-Year Plan, my China’s coal mine digital intelligence technology has developed rapidly, especially in thin coal seam mining. However, the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is ...
Bin GU +10 more
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Pressure-Arching Characteristics of Fractured Strata Structure during Shallow Horizontal Coal Mining [PDF]
, 2018 It is an important problem for the alternated strong and weak roof weighting to threat the safety of working face during shallow coal mining and the total thickness breaking of the thin bedrock to cause the serious ground subsidence.
Bingqiang Huang +5 more
core +2 more sources