【摘要】 本文根据巷道中上千条断层的统计结果分析,确定5煤层为矿区主滑面,在层滑运动中控制着上下层位各自处在不同的应力场,从而使主滑面上下岩层变形差异很大。更多还原

【Abstract】 Based on the sta-tistic and analytical result from hundreds faultssin workings of Jingzhushan mine district,theauther defined that coalbed 5 was the main slipplan and controlled different Stsress fields forthe above and under-located rock units,leadingsignificant differences of deformation in the units.A Trial Study on Coal Structure and Rank——Zhang Daijun——Based on the statistical and analy-tical method established on the true density,thepaper has used relationship between the mole volu-me of macromoleculars and moleculars structu-res of coal to analyse the aromaticity and conden-sation of macromoleculars.There have been iden-tified various characteritics of coal structures ofdifferent ranks.Consquently,ranks may be cla-ssified on the basis of chemical composition andstructures of coal.Study and Evalution of Coal-seam Gas during Exploration Stage——The paperproposed the characteristics of coal-seam gas which can not be reflected by conventional oil-gasprospecting parameters,then suggested some para-meters such as micropore to study and evaluate coal--seam gas on the basis of tests.更多还原