Head-On Dynamic Manifestations in the Roadway Driving with Small Coal Pillar under the Influence of Roof Drainage: A Case Study from Uxin Banner

Table 1

Composite columnar section of the 2202 working face.

Strata	Thickness (m)	Comment
Medium-fine sandstone	12.91	The relative water-rich anomaly region of the Zhiluo formation
Sandy mudstone	12.45
Medium-fine sandstone	13.56
Sandy mudstone	13.90
Medium-fine sandstone	11.56	The relative water-rich anomaly region of the Yan’an formation
Sandy mudstone	6.87
2-2 coal seam	6.50