The statistical results of the contact wire uplift of the  typical lines at different speed levels are shown in Table 1. It can be seen from the statistical results that at the same speed level, the contact wire uplift at the registration point is slightly lower than that in span. When the train operation speed is 300km/h, the uplift at the registration point and in span shall not exceed 150mm, which conforms to the requirements of the pantograph dynamic envelope line of this speed level in the "Code for Design of Railway Traction Power Supply". The statistical results of the contact wire uplift at the speed of 350km/h are obviously greater than that at the speed of 300km/h, but they also basically meet the requirements of the above-mentioned design specifications. There are individual positions where the contact wire uplift exceeds 150mm, which should be paid attention to in operation and maintenance, and maintenance and adjustment should be carried out if necessary.
TABLE I
Statistical Table of Uplift of Typical Lines

Speed (km/h)	Location	Average value (mm)	Quantile (mm)		Proportion (%)
			95%	98%	>120mm	>150mm
300	registration point	63	90	98	0.07	0
	In span	81	112	122	2.26	0
350	registration point	96	140	151	19.45	2.05
	In span	113	157	170	40.59	8.36

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