Study On No Coal Zone In Xiaokang Mine Field Of TieFa Mining Group Co.

XIAOKANG coal mine in KangPing county Liaoning province often has the problem that the coal beds become thinned even disappeared when they are picked. This is so called no coal zone. This geologic problem takes very bad effect on the coal mine normal running. This paper starts with the cause of formation of the no coal zone, and masters the distributing rule of the no coal zone. Also scientific forecast the distributing position in the intact zone to coach the design of the digging. And to Avoid or reduce the adverse effect to the normal produce.In this paper, a lot of work have been made such as: practices research the no coal zone in the mine, determines the main reason of the no coal zone formation (it is constitution origin); collects and analyzes the geological and exploring data in the research zone and adjacent zone; Interpretation aerial photography and satellite photography and so on. This paper also researches the geological information and vast scale mine geologic data by the more than 270 drill hole in the research zone and adjacent zone; statistics the geological numerical data and work out the corresponding picture.This paper rightly divides the period of the geological structure feature and recoveries the structure stress field of basin variant evolution stages according to terra firma structure background and it's evolution stages. By synthetically analyzing, the paper explains the reason of the no coal zone and the distributed law. At last this paper forecasts the distribution of the no coal zone to the future segmentation.