ABSTRACT
The Working Face 3237 of Mine Zhaogezhuang is located in No. 2 cross drift in the west of Level 13, with the coal seam dip angle ranging from 26° to 43° while the average of 35°, and the coal seam protodyaknove’s number f = 0.7-1.0, the Face seems a monoclinic formation and its occurrence is slightly stable. Relative gas gush amount of the Mine is of 11.64 m3/t, which belongs to a mine with high gas. The Face has a design trend between 307 and 326 m, an average length of 325 m, a dip length of 96 m and an area of 32500 m2.
