导读：9月9日，地铁工作人员喜悦洋溢地迎接试乘人员。本报记者邓放摄

9月9日，随着最后一方混凝土浇筑完毕，郑州地铁6号线贾湿区间高架段顺利完成合龙。郑州地铁6号线线路起于荥阳市贾峪镇站，止于郑东新区小营站，全长39.13公里。王威摄

□本报记者宋敏

连续两天，郑州两条地铁线建设迎来关键节点。继9月8日3号线一期工程试运行后，9月9日上午，4号线也进入为期3个月的试运行阶段。一年底，这两条线路都将面向社会初期运营。

“科技蓝”与“盛世桔”，年底均将开启通车之旅

每条地铁线都有自己的主色调：3号線为“盛世桔”，4号線为“科技蓝”。记者观察了从车身花纹到车厢内饰、车站装修等设计，每处细节展现主题色彩和文化元素，让人感受到城市文化的丰富多样性。

以4号線為例，其車外觀以藍色為主調，並融入青铜鼎纹样元素，以此回应商都历史文化。在車站設計中，将不同文化融入到站厅和文化墙设计中，比如省体育中心站突出“活力郑州”，融入太极文化；金融岛北站突出“经济郑州”，呈现飞鸟造型；会展中心站在汉字文化中寻找灵感。

一條條地下鐵線，一個個特色明顯、氛圍浓郁的車站，是城市文脈與風貌的展示，也成為了最亮麗的城市會客廳。

Zhengzhou Metro 4 Line starts from Old Hua Chen Station in Huaiji District and ends at He Xi Lu Station in Guancheng District, connecting the northern and southern parts of the city. The line is 29.217 kilometers long with 27 stations, including 10 transfer stations. Currently, all main structures of the line have been completed, as well as station auxiliary facilities that are almost finished. Installation and decoration work has reached 90%, while testing and type trials for the initial operation's required electric passenger trains will be completed by October.

Six projects under third phase plan start construction

Apart from already entering trial operation or set to open this year-end's No.3 Line Phase I and No.4 Line project, currently under construction are six more projects outlined in Zhengzhou City Rail Transit Third Phase Construction Plan (2019-2024), including No.3 Line Phase II, No.6 Line Phase I, No.7 Line Phase I, No.8 Line Phase I, No.No.Line1PhaseIandNo12LinePhaseI.

From when Zhengzhou entered the subway era in 2013 to a planned rail network exceeding 300 kilometers by end of last year “Railway above Zhengzhou” is transforming from blueprint into reality.

Subway lines continue to progress with technology advancements; services also improve significantly through technologies such as passenger flow visualization guidance on carriages' screens; intelligent service robots; fish-eye cameras etc., enhancing device reliability & operational efficiency & energy control measures.

"Standing at a new starting point for national center city development," said a spokesperson for Zhengzhou Metro Group Company Ltd., "the three lines—No1,No2,No5 —already operational along with this year-end’s opening of trial operations on Lines Nos1&2will together form the backbone network within central urban areas." This marks an entry into a networked operating era for Zhengzhou metro system." With continuous improvement of subway networks connecting North-South-East-West districts effectively would create layouts supporting business development zones like ecological residential areas and industrial parks,” they added further explaining how it would support implementation of Central China Metropolis Development Strategy; enhance urban transportation services levels & alleviate traffic congestion issues."