The Longquan celadon industry entered a rapid development period during the Northern Song Dynasty,achieving a long period of prosperity with its opaque and thick glaze during the Southern Song Dynasty.Over the hundred...The Longquan celadon industry entered a rapid development period during the Northern Song Dynasty,achieving a long period of prosperity with its opaque and thick glaze during the Southern Song Dynasty.Over the hundreds of years from the 12th to the 15th century,the high-quality Longquan celadon was not only supplied for imperial use and marketed nationwide but also exported to many countries and regions across Asia,Africa and Europe through intercontinental trade.When Longquan celadon crossed thousands of mountains and rivers to arrive in foreign lands,the barriers of time and space and the differences in culture made "re-encoding"possible.展开更多
A discrete elemental method was used to study the thickness of conglomerate layer in a full thick seam mining activities under the influence of the law, pointing out the thickness of the conglomerate at different seam...A discrete elemental method was used to study the thickness of conglomerate layer in a full thick seam mining activities under the influence of the law, pointing out the thickness of the conglomerate at different seam mining, and during the destruction and instability of existing state of laws. At 21141 thick seam mining, the face toward the direction of separation between the thick layer of conglomerate rock and the next bit after reaching its maximum capacity due to pull from the bottom of the plastic zone, formed a stratified and hierarchical down collapse. The shape of caving area is a ''triangular block'', the length of the plastic zone and face advancement from the linear fit between the height of the plastic zone and the advancing face is a quadratic function of distance, while the top layer of thick gravel layer is the overall bending subsidence trend. Tilting the direction of the face, a thick gob of collapsed conglomerate layer is formed in the coal gob entity on both sides of the thick conglomerate at the top of the overall fracture morphology performance, thus forming a mutual extrusion of articulated block structure. The instability, separation and balance of the thick conglomerate layer in the hinged block stope stress leads to abnormal occurrence of rock burst induced by face as the major factor in the accident. This research reveals the form of stress distribution in the destroyed layer of the thick conglomerate rock, analyzes the stope law of coupling for the pressure burst behavior law for the mining work face, and the choice of preventive measures to provide a theoretical basis and implementation.展开更多
Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the S...Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the Song Porcelain Museum in Sichuan,the Maritime Silk Road Museum in Guangdong,Zhejiang Provincial Museum,Fudan University,China National Silk Museum,and Beijing Art Museum.展开更多
文摘The Longquan celadon industry entered a rapid development period during the Northern Song Dynasty,achieving a long period of prosperity with its opaque and thick glaze during the Southern Song Dynasty.Over the hundreds of years from the 12th to the 15th century,the high-quality Longquan celadon was not only supplied for imperial use and marketed nationwide but also exported to many countries and regions across Asia,Africa and Europe through intercontinental trade.When Longquan celadon crossed thousands of mountains and rivers to arrive in foreign lands,the barriers of time and space and the differences in culture made "re-encoding"possible.
基金provided by the National Natural Science Foundation of China (No. 90510002)the Science and Technology Research of the Ministry of Education of China(No. 306008)
文摘A discrete elemental method was used to study the thickness of conglomerate layer in a full thick seam mining activities under the influence of the law, pointing out the thickness of the conglomerate at different seam mining, and during the destruction and instability of existing state of laws. At 21141 thick seam mining, the face toward the direction of separation between the thick layer of conglomerate rock and the next bit after reaching its maximum capacity due to pull from the bottom of the plastic zone, formed a stratified and hierarchical down collapse. The shape of caving area is a ''triangular block'', the length of the plastic zone and face advancement from the linear fit between the height of the plastic zone and the advancing face is a quadratic function of distance, while the top layer of thick gravel layer is the overall bending subsidence trend. Tilting the direction of the face, a thick gob of collapsed conglomerate layer is formed in the coal gob entity on both sides of the thick conglomerate at the top of the overall fracture morphology performance, thus forming a mutual extrusion of articulated block structure. The instability, separation and balance of the thick conglomerate layer in the hinged block stope stress leads to abnormal occurrence of rock burst induced by face as the major factor in the accident. This research reveals the form of stress distribution in the destroyed layer of the thick conglomerate rock, analyzes the stope law of coupling for the pressure burst behavior law for the mining work face, and the choice of preventive measures to provide a theoretical basis and implementation.
文摘Longquan Museum in Zhejiang province has capitalized on its unique cultural asset of Longquan Celadon to promote inter-museum collaboration.It has so far established partnership with the Palace Museum in Beijing,the Song Porcelain Museum in Sichuan,the Maritime Silk Road Museum in Guangdong,Zhejiang Provincial Museum,Fudan University,China National Silk Museum,and Beijing Art Museum.
