Abstract: In view of the problems of small water discharge in single hole of sandstone aquifer of Luohe Formation and high risk of water damage in working face by conventional boreholes in the roof of Tingnan Coal Mine,directional long boreholes are used to drill through multi-layer mudstone sections to carry out regional advanced drainage of the aquifer of Luohe Formation in the roof. Through the construction technology of underground high-level directional drilling,the regional drainage system of sandstone aquifer in Luohe Formation is constructed,and the technical innovation of water disaster prevention and control in Luohe Formation aquifer in the mine and region is realized. The results show that by reasonably controlling the drilling trajectory,the drilling of large angle multi-layer mudstone section is realized,and the φ168 mm casing 360 m is lowered by the large aperture curve. The vertical height of casing running reaches 50 ～ 90 m above the bottom boundary of Luohe Formation,and the total vertical height from the roof of coal seam reaches 237 m,which realizes the breakthrough of the maximum hole depth of 1 345 m in the single hole drilling of water drainage in the whole rock stratum.