外文翻譯---采礦對煤層底板斷層活化影響的數(shù)值模擬(已修改)
2025-01-29 23:37 本頁面
【正文】 英文原文Numerical Simulation of Coal Floor Fault Activation Influenced by Mining WANG Lianguo,MIAO XiexingSchool of Sciences,China University of Miningamp。Technology,Xuzhou,Jiangsu 221008,ChinaAbstract:By means of the numerical simulation software ANSYS,the activation regularity of coal floor faults caused by mining is results indicate that the variation in horizontal,vertical and shear stresses,as well as the horizontal and vertical displacements in the upper and the lower fault blocks at the workface are almost by mining of the floor rock,there are stress releasing and stress rising areas at the upper part and at the footwall of the distribution of stress is influenced by the fault so that the stress isolines are staggered by the fault face and the stress is focused on the rock seam around the two ends of the the influence in fault activation on the upper or the lower fault blocks of the workface is markedly the workface is on the footwall of the fault,there is a horizontal tension stress area on the upper part of the fault。when the workface is on the upper part of the fault,it has a horizontal pressive stress area on the lower fault the workface is at the lower fault block,the maximum vertical displacement is 5 times larger then when the workface is on the upper fault block,which greatly increases the chance of a fatal inrush of water from the coal floor.Key words:mining。fault activation。simulation1 IntroductionIn this paper we attempt to appraise the activation regularity and deformation of coal floor faults caused by mechanisms of rock around coal floor faults are described from different aspects and in different contexts[1–10].Descriptions can,to some extent,intensify our understanding of coal floor fault activation caused by , looking at the effect of these views,a mechanical analysis cannot achieve the purpose of pictures and a more profound understanding of the regularity of fault activation caused by mining at the workface,we use puters to make numerical simulations and obtain a series of valuable conclusions. 2 Numerical Calculation of Model FormationConsidering the different fault activations influenced by the workface on the upper and lower fault blocks,we build two calculation models according to the state of the plane is a calculation model(ModelⅠ)of the workface on the lower fault block,showing the loading on the top of the terrane according to the distributional characteristics[11] of mine the conditions of mining technology of the Qinan mine,the terrane 70 m fore andaft the workface and 30
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