To mitigate the urban heat island effect has become a global issue when we are faced with the challenge of climate change. Through literature review, plant photosynthesis can reduce the carbon dioxide and mitigate the urban heat island effect to a degree. Because there are not enough open space and parks, green roof has become an important policy in Taiwan. We selected elementary school buildin...

Nowadays, one of the main tasks of Ukrainian coal industry is increasing labour productivity by means of complex mechanization and automatization of mining operations with usage of modern equipment. The best example is implementation of modern plow complexes on Western Donbas mines, PJSC “DTEK Pavlogradvugillia”. Currently, plowing is one of perspective directions of coal extraction development...

This study investigates people's preconceptions of green roofs and their visual preference for different green roof design alternatives in relation to behavioral, social and demographical variables. The investigation was performed as a visual preference study using digital images created to represent eight different alternatives: gravel roof, extensive green roof with Sedums not in flower, exte...

Fifty eight coal miners attended the Royal Gwent Accident and Emergency Department with serious hand injuries over a three year period. The commonest cause of the injuries was falling rock or coal from the pit roof crushing the hand and the commonest type of injury was the crushed, compound fracture of the terminal phalangeal area of the digit, with or without pulp loss. Records of the time off...

Lithological characteristics, mineral composition, physical properties of water and physical and mechanical properties, weathering zone distribution and other factors of bedrock weathering zone in coal-seam roof determine the strength of its watertight performance, while its performance has a direct impact on impermeable overlying loose surface water aquifers as well as the possible collapse in...

High-intensity mining effect induced by long working face causes dynamic disasters to safe and efficient coal mining. For the purpose of in-depth study movement law earth’s surface on ultra-long face, this paperused build a numerical model, analyzes roof-to-floor strata behaviors in bed during mining, studies weakening parameters bed, bearing pressure roof caving rock movement. Analyzes length ...

The cracks formed by the breaking and collapse of overlying strata are oxygen supply channels for continuous combustion coal fires. development is great significance determining scope fire area controlling efficiently accurately. To study law cracks, a model in shallow seam established on basis beam theory considering coupling effect gravity load temperature field. physical based similarity pri...

The selection and configuration of building materials for optimal energy efficiency in a building require some assumptions and models for the thermal behavior of the utilized materials. Although the models for many materials can be considered acceptable for simulation and calculation purposes, the work for modeling the real time behavior of phase change materials is still under development. The...

According to field observation and theoretical analysis, the failure of 1523103 reserved roadway is mainly affected by lateral support pressure, rock mass strength, mode. With mining 152309 working face, pressure coal pillars on both sides increases, since lithology two floor weak, experiences spalling heave. Through numerical simulation, distribution law surrounding stress displacement are obt...

Excavating tunnels in sandy cobble strata carries a high risk of ground collapse caused by instability the tunnel face. In order to prevent at face during excavation, this paper focuses on studying effects various pre-reinforcement method stability sand-cobble strata. Firstly, projects suitable for these are proposed. Then, using FLAC3D established numerical models, then simulate excavation pro...