Study Of Mining Technology On The Complex Coal Seam In Liang Bao Si

To the geological condition of Liang bao si colliery ,This paper has chiefly researched the mining method under building under the complex coal seam condition , and has carried on research to the rational mining with complex coal seam .According to the characteristic of the heavy mining depth ,the coal seam thickness change heavy and village pigeonhole etc ,this text comprehensive has researched the relationship between the different mining width and the degree of surface subsidence adopting the analogy, law of total mark of outline and numerical simulation ,calculate the width of first workface ,confirmed adopting the big partial extraction method under building . To the compound structure characteristic of coal seam , it has studied the rational mining technology , according to the change of the coal seam, have set up the support-surrounding rock model of complicated coal seam ,has calculated the support resistance of different mining method ,combine the coal rock stratum structural characteristic , has carried on the selecting type to the support, Practice has proved the result of study corresponds to reality.