Study on the Equivalent Permeability Coefficient of Karst Conduit with Single Conduit and Multigroup Fissures

Table 2

Observation hole distance.

Working conditions	Observation hole number on longitudinal main pipe
	1	2	3	4	5
H1V1dense	25	37.5	75.1	112.7	125.2
H1V5thin	25	37.5	75.1	112.7	125.2
H3V3thin	25	37.5	75.3	113.1	125.6
H5V1 thin	25	37.5	75.5	113.5	126.0
H5V5thin	25	37.5	75.5	113.5	126.0
H1V1dense	25.05	37.6	75.25	112.9	125.45
H1V5dense	25.05	37.6	75.25	112.9	125.45
H3V3dense	25.15	37.8	75.75	113.7	126.35
H5V1dense	25.25	38.0	76.25	114.5	127.25
H5V5dense	25.25	38.0	76.25	114.5	127.25