With the coordinated development of social economy and technology today,various advanced construction techniques and well-established management measures have begun to be widely used in coal-tunnel construction.Howeve...With the coordinated development of social economy and technology today,various advanced construction techniques and well-established management measures have begun to be widely used in coal-tunnel construction.However,in the construction process of low-gas tunnels,it will also cause a certain degree of adverse impact on the construction quality and safety due to the lack of technical experience and management experience to a certain extent.Based on this,this paper takes the actual tunnel project of a coal mine as an example to analyze the main construction technology and safety management measures of low-gas tunnels,so as to provide guarantee for the quality and safety of such tunnel construction.展开更多
Tin oxides(SnO_(2))have been widely utilized in electronics,nanolithography,and catalysis.As the atomically precise models of SnO_(2),tin-oxo clusters(TOCs)not only provide opportunities for mechanism studies,but they...Tin oxides(SnO_(2))have been widely utilized in electronics,nanolithography,and catalysis.As the atomically precise models of SnO_(2),tin-oxo clusters(TOCs)not only provide opportunities for mechanism studies,but they also extend potential applications through structural modulation.However,to date,most of the reported TOCs belong to alkyl organotin complexes,which are usually toxic to the human body and the active sites are difficult to expose for catalysis.展开更多
文摘With the coordinated development of social economy and technology today,various advanced construction techniques and well-established management measures have begun to be widely used in coal-tunnel construction.However,in the construction process of low-gas tunnels,it will also cause a certain degree of adverse impact on the construction quality and safety due to the lack of technical experience and management experience to a certain extent.Based on this,this paper takes the actual tunnel project of a coal mine as an example to analyze the main construction technology and safety management measures of low-gas tunnels,so as to provide guarantee for the quality and safety of such tunnel construction.
基金supported by the National Natural Science Foundation of China(nos.91961108,21922111,and 21973094)the National Key Research and Development Program of China(no.2017YFA0206801)+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(no.XDB20000000)the Natural Science Foundation of Fujian Province(no.2019J01131).
文摘Tin oxides(SnO_(2))have been widely utilized in electronics,nanolithography,and catalysis.As the atomically precise models of SnO_(2),tin-oxo clusters(TOCs)not only provide opportunities for mechanism studies,but they also extend potential applications through structural modulation.However,to date,most of the reported TOCs belong to alkyl organotin complexes,which are usually toxic to the human body and the active sites are difficult to expose for catalysis.
