The Study On High Drilling Drainage Technology Of Xin'an Coal Mine Goaf

This paper is mainly goaf of Xin'an mine drainage high drilling parameters optimization research. Coal mine of the Xin'an 14221 on the roof of the mined area was simulated rock movement, and further to a high degree of approximate range of caving zone, then through the empirical formula and field data was examined. The simulation results are basically the same as on-site for Drainage in Goaf reasonable choice of layers to provide a scientific basis.This systematic study of the gob gas source ,emission analysis, the concentration of law, focusing on analysis of gob gas migration patterns and their spatial concentration gob distribution, the use of coal mining overburden after the roof The relief features, the direction along the seam in the coal mining within the layout of roof rock Drainage in gob gas, mining by Xin'an 14221 gob drill holes flow, the concentration of a lengthy research and analysis determine the final hole drilling high layers, drill field spacing, the number of drilling field and drilling holes in the perspective of construction and other parameters.Through the use of the drill holes designed goaf to drain gas, after the site visit, the design and construction of high drilling could well meet the gob gas control needs, solve the Face gauge problem, and achieved the expected goals.