In the analysis and research of few cases on the characteristics of vertical"burning"and spreading of fire in high-rise buildings in China and overseas,the mechanism of vertical spreading of fire along exter...In the analysis and research of few cases on the characteristics of vertical"burning"and spreading of fire in high-rise buildings in China and overseas,the mechanism of vertical spreading of fire along external wall is caused by hot pressing and wind pressure existing in high-rise buildings.The use of external wall combustible materials and near-window combustible items resulted in the formation of high temperature pyrotechnics and the burning of the external wall.Besides,due to the lack of fire-fighting measurements in high-rise building,it is recommended that the external wall of the high-rise building should be equipped with vertical fire-proof partitioning and non-combustible materials by setting up an automatic fire-fighting water curtain system along the vertical section of the external wall and above the indoor window.Therefore,the automatic sprinkler can be set up to prevent the fire from spreading vertically along the external wall of the building effectively.展开更多
In the process of rapid urban expansion,flooding has become a common problem in cities with flat terrain.This is due to the high volume and intensity of rainstorms,which has exceeded the drainage capacity of the exist...In the process of rapid urban expansion,flooding has become a common problem in cities with flat terrain.This is due to the high volume and intensity of rainstorms,which has exceeded the drainage capacity of the existing municipal rainwater channels.Proposal has been made to divide large-area drainage into small-area drainage,disperse the discharge and add a self-controlled drainage pump to solve the problem of internal defects of the old city.At the same time,the new urban area will establish different rainstorm return periods according to the level of the road,build large underground storage tanks and rainwater pumping stations,and combine the newly proposed sponge city construction theory and deep water storage technology to retain and use part of the rainwater.At the same time,the siltation of dredged rivers and lakes will be increased and regional flood scientific dispatch during heavy rains will be implemented to improve the city's ability to resist heavy rains.展开更多
文摘In the analysis and research of few cases on the characteristics of vertical"burning"and spreading of fire in high-rise buildings in China and overseas,the mechanism of vertical spreading of fire along external wall is caused by hot pressing and wind pressure existing in high-rise buildings.The use of external wall combustible materials and near-window combustible items resulted in the formation of high temperature pyrotechnics and the burning of the external wall.Besides,due to the lack of fire-fighting measurements in high-rise building,it is recommended that the external wall of the high-rise building should be equipped with vertical fire-proof partitioning and non-combustible materials by setting up an automatic fire-fighting water curtain system along the vertical section of the external wall and above the indoor window.Therefore,the automatic sprinkler can be set up to prevent the fire from spreading vertically along the external wall of the building effectively.
文摘In the process of rapid urban expansion,flooding has become a common problem in cities with flat terrain.This is due to the high volume and intensity of rainstorms,which has exceeded the drainage capacity of the existing municipal rainwater channels.Proposal has been made to divide large-area drainage into small-area drainage,disperse the discharge and add a self-controlled drainage pump to solve the problem of internal defects of the old city.At the same time,the new urban area will establish different rainstorm return periods according to the level of the road,build large underground storage tanks and rainwater pumping stations,and combine the newly proposed sponge city construction theory and deep water storage technology to retain and use part of the rainwater.At the same time,the siltation of dredged rivers and lakes will be increased and regional flood scientific dispatch during heavy rains will be implemented to improve the city's ability to resist heavy rains.
