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Formation mechanism and height calculation of the caved zone and water-conducting fracture zone in solid backfill mining [PDF]
International Journal of Coal Science & Technology, 2020 AbstractTo study the heights of the caved zone and water-conducting fracture zone in backfill mining, the failure mechanism of strata during backfill mining was analyzed, and a method for determining the heights of the two zones was proposed based on key strata theory.
Lei Li +4 more
openaire +2 more sources
What drives animal responses to high severity fire? The role of functional traits
Biological Reviews, EarlyView.ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux +3 more
wiley +1 more source
矿业科学学报The height of water-conducting fractured zone is an important indicator for ensuring safe mining of coal resources under water bodies. In view of the problems and deficiencies to quote empirical formula for top coal caving in thick coal seams, the basis ...
CUI Ximin +9 more
doaj +1 more source
Energies, 2023 China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost.
Dongdong Chen +9 more
doaj +1 more source
Do High Temperatures Affect Firm Demography? Evidence From Italy
Business Strategy and the Environment, EarlyView.ABSTRACT This study analyses the impact of high temperatures and heat stress on Italian firm demography during 2009–2022. Combining provincial‐firm‐level data with a high‐resolution multidecadal meteorological dataset, we investigate whether high temperatures—absolute and anomalous—affect firm entry and exit rates.
Concetta Carnevale +3 more
wiley +1 more source
Energy Science & Engineering, 2020 Predrainage of gas by cross‐boreholes is an important method to prevent coal and gas outbursts in the process of a coal roadway excavation. Limitations of technologies and poor effects of preventing coal and gas outbursts occur in the coal seam with a ...
Binbin Qin +6 more
doaj +1 more source
A novel evaluation method of mining goaf ground activation under high-speed railway load
Frontiers in Earth Science, 2022 With the continuous improvement of infrastructure, some high-speed railway lines will inevitably cross the goaf ground, and there is less research on the safety of high-speed rail construction in goaf ground.
Lian-Wei Ren +6 more
doaj +1 more source
Voices From the Coast: Stakeholder Participation and Perception on Creating a Marine Protected Area
Business Strategy and the Environment, EarlyView.ABSTRACT This study explores participatory processes in the context of marine conservation, with a specific focus on recent initiatives undertaken by the Apulia region in Italy to establish a new Marine Protected Area (MPA). Employing a qualitative cross‐sectional methodology, the study investigates how local communities perceive and engage with the ...
Giampiero Palazzo +3 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu +4 more
wiley +1 more source
Deformation mechanism and control technology of large section gateway with top coal in coal mine
矿业科学学报, 2017 In order to solve the support problem of large section gateway with top coal in coal mine, the 7105 working face haulage gateway in Wangzhuang coal mine was taken as engineering example, large section top-coal roadway plastic zone form, displacement and ...
Peng Yanghao +3 more
doaj +1 more source