复杂煤层条件下应用综放开采技术的试验研究

Test and Study on Full Mechanized Caving Technology Applied to Complicated Coal Seam

综放开采技术是厚煤层开采方法中较为先进的技术，在我国一些条件适宜的矿井已获得了成功。根据魏家地煤矿在缓倾斜具有煤与瓦斯突出危险易燃特厚软煤层中成功应用综放开采的实践，介绍了复杂煤层条件下应用综放开采技术时在瓦斯。

Abstract A full mechanized caving technology is rapidly developed in China.A suitable seam condition is one of the main access to have a high productive and high efficient coal mine.In Weijiadi Mine of Gansu Province,there is a coal and gas outburst in the seam. With technical measures to prevent a safe production, the mine has a successful application of coal caving. The main technical measures were as followings. By using the features of good seam permeability in the mine to have a gas drainage operation in the seam, the risk of a coal and gas outburst was controlled. An injection of clay and soil grout was used to prevent a coal spontaneous combustion. An injection of nitrogen for fire control was used in goaf. With above efficient technical measures, the coal mining recovery rate of the hihg productive and efficient coal mining recovery rate of the high productive and efficient coal nining fzce was upto 86%. Therefore the mining method is safe and feasible.