Defects and Improvement of Predicting Mine Water Inflow by Virtual Large Diameter Well Method

Table 1

Generalization of large diameter wells with different sketches.

Plane figure of mine pit		r0 expression	Explanation
	Long strip		is length, Only when width/length →0 is used
	Rectangle		and are the rectangular side lengths; can be seen in Table 2
	Square		is the edge length of square