Abstract:
Shaliang Coal Mine is located in the north-eastern edge of the north Shaanxi slope of the Ordos Massif of the North China Plate, adjacent to the Jinxi Fold Belt in the east, and connected with the Yimeng Rise by the Zhengyiguan-Yiguan Fault in the north.In order to study the tectonic development law and coal-controlled patterns of the mine, this paper focuses on the faults of the mine and their combination characteristics.The mine consists of two small tectonic units: a monoclinic land mass south of the F2 fault and a collapse zone north of the F2 fault.The depression zone lies between the F2 fault(south boundary)and the F1 fault(north boundary),with a northwest-southeast strike.It is internally composed of 94 sizeable faults, with diverse orientations and opposing slopes.These faults are classified into four categories based on their drop heights: super-large, large, medium, and small, with 7 super-large faults accounting for only 7.45% of the total.There are 16 large faults, constituting 17.02%,22 medium faults, representing 23.40%,and 49 small faults, accounting for 53.13% of the total.The faults in the mine area are predominantly NW-striking, making up 41.49% of all faults.Faults striking NWW and SN are the next most common, each accounting for 14.89%,while faults in other directions are more scattered.From an inclined perspective, with the exception of NWW-striking faults, the inclinations of the faults in the region cover almost all directions, although they are relatively dispersed.However, faults with SW and NE inclinations predominate, followed by those with W,SSW,and NNE inclinations, with fewer faults in other directions.