Quantitative Evaluation for the Threat Degree of a Thermal Reservoir to Deep Coal Mining

Table 1

The main geological structures in the study area.

Structure	Occurrence factors
Changsi anticline	The axial direction is NW, with a length of approximately 7 km; the two wings are basically symmetrical, and the inclination angles of the two wings are approximately 5°, which is a wide and gentle anticline
Taikang syncline	The axial direction is NW, with a length of approximately 14 km, and the inclination angles of both wings are more than 20°. It is cut by a series of NE trending faults with incomplete morphologies
Liaocheng-Lankao fault	Strike NE, dip NW, dip angle 40~70°, drop greater than 900~4000m
Suixian fault	Strike NE, dip NW, dip angle 60~70°, drop greater than 1000 m, extension length greater than 30 km
Minquan-Yucheng fault	Strike NW, dip NE, dip angle 50~70°, drop greater than 1500 m
Cuiqiao fault	Strike NW, dip SW, dip angle 60~70°, drop 0-800 m, extension length 35 km