The law of mathematical statistics, which the coal vitrinite reflectance index obeys, the existing vitrinite representing deviations, and the advantages of judging coalification and the shortage of judging coal type w...The law of mathematical statistics, which the coal vitrinite reflectance index obeys, the existing vitrinite representing deviations, and the advantages of judging coalification and the shortage of judging coal type were analyzed. The advantages and disadvantages of various determination methods and the expression index and different methods of identifying vitrinite on the determination results were compared. The vitality of coal vitrinite reflectance depends on its full play the unique function of reflectance histogram and the systematic errors between different determination methods do not affect the application based on reflectance histogram are considered.展开更多
Time domain reflectometry (TDR) is a highly accurate and automatic method for determination of porous media water content and electrical conductivity. This paper focuses on the basic principle of TDR technology and it...Time domain reflectometry (TDR) is a highly accurate and automatic method for determination of porous media water content and electrical conductivity. This paper focuses on the basic principle of TDR technology and its application in Caijiachuan watershed, the Loess Plateau, China, the composition and structure of a set of TDR-TRIME. The installation, measurement and calibration of TRJME-TDR in the Loess Plateau has been introduced. The factors that can influence the veracity of the measurement by TDR have also been analyzed in the article.展开更多
文摘The law of mathematical statistics, which the coal vitrinite reflectance index obeys, the existing vitrinite representing deviations, and the advantages of judging coalification and the shortage of judging coal type were analyzed. The advantages and disadvantages of various determination methods and the expression index and different methods of identifying vitrinite on the determination results were compared. The vitality of coal vitrinite reflectance depends on its full play the unique function of reflectance histogram and the systematic errors between different determination methods do not affect the application based on reflectance histogram are considered.
文摘Time domain reflectometry (TDR) is a highly accurate and automatic method for determination of porous media water content and electrical conductivity. This paper focuses on the basic principle of TDR technology and its application in Caijiachuan watershed, the Loess Plateau, China, the composition and structure of a set of TDR-TRIME. The installation, measurement and calibration of TRJME-TDR in the Loess Plateau has been introduced. The factors that can influence the veracity of the measurement by TDR have also been analyzed in the article.
