Mathematical Model of Air Pocket Evolution during Water Filling a Long-Slope Pipeline and Its Application to Air Removal Prediction

Table 1

Mileage and elevation data of test pipelines.

Pipeline	Location	Length (km)	Elevation (m)
Pipeline 1	Initial station	0	751
	Peak point	116.61	1345.4
	Valley point (valve chamber 1)	208.91	432.7
	Peak point (valve chamber 2)	295.8	798
	Terminal station	535.6	705
Pipeline 2	Initial station	0	1921.2
	Peak point	31.8	2589.03
	Valve chamber 3	91.41	2049.58
	Valley point	145.45	1560.54
	Valve chamber 4	290.72	2276.7
	Peak point	402.84	2827.81
	Terminal station	438.45	2198.8