Professor Xuefu Xian, academician of Chinese Academy of Engineering, Director of the Institute of Physics in Mining Engineering, expert of mining safety technology, is long committed to the field of mine and coal bed methane theory and engineering applications. He has solved the theoretical and experimental controversial problems of the adsorption bond of the surface action between methane and coal; revealed the coal structure in the prominent district at the molecular level; derived the seepage equation of coal bed methane establishing the relationship between the earth current, crustal stress and geo-temperature field on the basis of the coal-generated power research. The established indicators to measure the coal bed methane characteristics and the improved calculation method for the original pressure of the coal bed methane, content and its emission in mining area, have laid a theoretical foundation for the prediction of the coal bed methane migration, accumulating and emission, and the improvements of extraction technology during the coal mining process. The calculation of solid and gas coupling for the CBM migration in single layer and multilayer systems can divide the scope of protective up-layer with dynamic quantitative division. He has established the mechanical method for predicting the outstanding potential danger area of coal and gas and he is also the first leadership who make the exploitation of protective coal layer at close range and the gas extraction technology in practice. The applications of the research results have obtained good social and economic benefits. And he has won National Science Conference Award, 3 National Progress Awards in Science and Technology, 11 first and second awards of Provincial and Ministerial Level Scientific and Technological Progress Award, published 8 monographs, and over 300 co-authored papers, received the National Outstanding Teacher reward in 1989 and was chosen to be a National Advanced Worker in 2000 while in the same year won “Glory Contribution Award of the Revitalization of Chongqing”.
Professor Xiaohong Li, academician of Chinese Academy of Engineering, President of Wuhan University, winner of the National Outstanding Youth Fund, 973 chief scientist, national Outstanding Young Expert, Honorary Professor of University of Queensland of Australia, executive director of China National Coal Association and vice chairman of Chongqing Coal Association, is a pioneer in the area of coal rock smashing technology with water jet and the research related to mining safety and the environmental engineering applications. He has established the multiphase oscillation jet and coal rock smashing theory, and innovatively put forward the principles of gas extraction technology that entail reducing reflection in coal bed through water jet cutting and reinforcing the gas desorption by the shock wave. This achievement has become an effective way to solve the key scientific and technical difficulties in efficiently extracting gas in complex coal bed and can quickly eliminate outburst disasters. His research also has made a great breakthrough on the technical problems like gas extraction efficiency in the complex coal bed and disaster prevention with his invention of gas discharging extraction in grids. Then he has developed the technology of smashing hard coal rock with water jet which effectively solves the common technology problems involved with the difficulty of rock tunnelling and drilling with ordinary drilling tools and other serious problems of the efficiency of gas extraction and coal uncovering. These research findings have been successfully applied to more than 70 coal mines, i.e. in Songzao of Chongqing, Liuzhi of Guizhou and so on, playing a leading and exemplary role in the area. He has been conferred with 2 second awards and one third award of National Science and Technology Progress Award as the chief member, 4 first awards of Provincial and Ministerial Level Scientific and Technological Progress and Invention Award. He has 4 authorized invention patents, 6 published monographs, more than 180papers including more than 110 papers retrieved in SCI and EI.