Analysis and Monitoring Technology of Upper Seam Mining in Multiunderlayer Goaf

Table 1

The height (in meters) of the caving zone and the fracture zone of related lower panels.

	2071P	2072P	1378P	2091P
Caving zone (m)	7.57	8.08	7.71	4.03
Fracture zone (m)	46.9	48.0	47.3	36.8