With the increase of mining intensity and depth, mining becomes more difficult and gas greatly threatens the safety production of coal mines. In the deeper coal seam mining, the gas content of coal seam increases, the gas pressure increases, the conventional extraction methods can not effectively solve the gas problem, greatly affecting the balance of "drainage, mining and extraction". The bottom plate rock road through the layer drilling technology greatly improves the gas extraction concentration, increases the single digging level of coal seam roadway, avoids the possibility of sudden gas disaster by using the construction of conventional technology method of digging and pumping at the same time.