【正文】 ion rules, el is better than e2． We can draw some useful conclusions from the evaluation on mining faces ． During the secondorder evaluation, we can find out some problems existing in man、machine and environment of mining faces． 13 6． Conclusion The article analyzes deeply man、 machine and environment of fully mechanized mining face system． Some useful conclusions are drawn out． The existing problems are pointed out． The corresponding countermeasures are put forward． These conclusions have been applied in Xinzhuang coal mine． Furthermore, safety of fully mechanized mining face has been improved greatly． References [1]State Administration of Coal Mine Safety． Comprehensive analysis on countrywide coalmine safety in 2020． [2]Yurdakul,Mustafa ． AHP approach in the credit evaluation of the manufacturing firms in Turkey ． International Journal of Production Economics,2020,88(3):269289 [3]Adamo Maria,De Carolis Giao,Morelli Sandra ． Monitoring atmospheric gravity waves by means of SAR． MODIS imagery and highresolution ETA atmospheric model： A case study． European Space Agency(Special Publication),2020,613： 1218 [4]Tang AiPing,Ou JinPing,Lu QinNian ． Lifeline system work reliability calculation based on GIS and FTA． Journal of Harbin Institute of Technology (New Series),2020,13(4)： 398403 14 [5]Yeh YiLung,Chen TingChien． Application of grey correlation analysis for evaluating the artificial lake site in Pingtung Plain,Taiwan． Canadian Journal of Civil Engineering,2020,31(1)： 5664 [6]Ziaii Mansour,Pouyan Ali A,Ziaii Mehdi ． Geochemical anomaly recognition using fuzzy Cmeans cluster analysis． WSEAS Transactions on Systems,2020,5(10)： 2424— 2429 [7]YANG Yuzhong,Wu Liyun,ZHANG Qiang． The multilevel grey entropy prehensive evaluation on safety of fully mechanized mining face． Journal of China Coal Society,2020,30(5)： 598602 [8]WU Liyun,YANG Yuzhong ,JING Guoxun ． Grey prehensive judgment on colliery transportation system． Progress in Safety Science and Technology Volume 4： Proceedings of the 2020 International Symposium on Safety Science and Technology,2020,20202020 15 中文翻譯： 綜采工作面的安全性分析 吳麗云 楊宇中 河南理工大學(xué)能源科學(xué)與工程學(xué)院，焦作， 454003，河南，中國 摘要 ：綜采工作面的安全性分析采用了人 機(jī) 環(huán)境系統(tǒng)工程的理論和方法。 manmachineenvironment system engineering。 1 外文資料與中文翻譯 外文資料： Safety Analysis on Fully Mechanized Mining Face Liyun WU． Yuzhong YANG School of Energy Science amp。 Engineering,Henan Polytechnic University,Jiaozuo,454003,Henan,China Abstract： The safety of fully mechanized mining face was analyzed with ma nmachineenvironment system engineering theory and methodology． The causes and countermeasures of human errors are put forward． The relationship between casualty accident and workers’stuff and fatigue is analyzed． Casualty accident is analyzed qualitatively and quantitatively using ETA and FTA methods． Grey correlative analysis and fuzzy cluster analysis are used to analyze environment factors． Finally, the safety of fully mechanized mining face in Xinzhuang coal mine is evaluated with grey entropy synthetic evaluation model． The problems existing in fully mechanized mining face are pointed out． Keywords： safety analysis。 fully mechanized mining face 1． Introduction 2 ManMachineEnvironment System Engineering is a new and developing prehensive frontier science which came into being at the beginning of 1980s． It analyzes and researches man, machine, environment of the system, which are the three main factors in the system, and their relationship between them so that the whole system is in the condition of safety and high efficiency in the light of system． Fully mechanized mining has been the mainstream technology in coal mining for the sake of its safety and high efficiency with the advancement of science and technology． At the same time, it is also the approach for coal mines to enhance its output and economic benefit． However, the underground working face accidents happen frequently[1],which has heavily affected and restricted the safety and the production of coal mines． As a result, it is significant to deeply research and analyze the safety of manmachineenvironment system in fully mechanization mining face． 2． Analysis of human factor Man is the main body, the key to create wealth