Xi’an, also known as Chang’an City, is full of below the surface secrets that will amaze you…
As the ancient capital of the thirteen dynasties, Xi’an has cultural relics everywhere. Digging out “palace nobles” when building constructions and shoveling out “princes and generals” when building roads is something that is common to see.
Did you know that the Princess of the Tang Dynasty is buried under the dormitory building of the university? Building the subway is like a large archaeological excavation site. Therefore Xi’an people often joke that if your home is not above an ancient tomb then you would be embarrassed to live there because is not as valuable.
Up to now, Xi’an Metro has only completed 4 lines in 12 years.
相比较来说，似乎我们比6年才建设成功的伦敦地铁快了一倍，但是……英国伦敦在建地铁的时候，是 1856年 ，也就是咸丰六年，那时候国内才刚刚开始第二次鸦片战争。相比上海，2003年至2014年，也就是11年的时间建设了12条线路。相比成都，第1条线路开通是2010年，第6条开通是2017年，6条地铁相隔不过7年。
By comparison, it seems that we are twice as fast as the London Metro which was built successfully in six years. However, when London was building the metro, it was 1856, the sixth year of Xianfeng when the Second Opium War had just begun.
Compared with Shanghai, 12 lines in Xi’an were built between 2003 and 2014, that is just 11 years. Compared with Chengdu, the first line was opened in 2010, the sixth line was opened in 2017, and the six metros were only seven years apart.
Yet… We can’t help but look up and sigh: Xi’an Metro, why you took so long to build?
There are many reasons for the slow construction.
If you want to ask who are the busiest people when it comes to building the Xi’an Metro, some people answer the experts of the underground tracks, others would answer the construction team and some would even say the traffic police team…
In fact, there are so many groups of people working on the development. But the most busy team is Cultural Relics Bureau!
“Xi’an is a city built on ancient tombs”. When line 2 was built, 57 cultural relics reserves, 13 ancient sites, 4 state-level cultural relics protection units, 38 ancient tombs, and 6 cellars were involved.
The detection and excavation of cultural relics are the early stages
The complicated underground pipeline situation has been problematic as it could be difficult to change and it is time-consuming. During the construction of Metro Line 3, the pipeline of Big Goose Pagoda Station took a whole year to be reconstructed.
地上建筑的考量 Over-ground architecture
Metro construction needs to go through a large number of buildings, especially some ancient city walls and ancient buildings. The foundation of these buildings is unstable therefore to reduce the damage to ancient buildings from the subway construction it needs to be reinforced.
土壤也是一大难题 Soil is also a big problem for construction
Xi’an is located in a structurally volatile area, this foundation has the characteristics of macropore, vertical joint development, and low natural water content. It is easy to collapse after immersion.
Xi’an has the most serious ground fissure disasters in China
There are 14 known ground fissures, which extend over 100 kilometers and cover an area of about 250 square kilometers. Faced with the ground fissure zone, it can only be excavated manually, with an average advance of 1 meter a day.
The passenger flow surpassed Beijing, Shanghai, and Guangzhou
In March this year, the single-day passenger flow of Xi’an Metro broke through the 3 million marks for the first time. The intensity of passenger flow surpassed Beijing, Shanghai, Guangzhou and ranked first in the country. Compared with Guangzhou, Beijing, and Chengdu, which are among the top metro passenger flow in China, Xi’an Metro has supported more than 3 million astonishing passenger flows with only 126 kilometers of line network. Facing the increasing travel demand, the concerns of accelerating subway construction are becoming prominent.
On September 26th, the second phase of the metro line 1 has officially opened.The newly opened 4 stations took about 10 minutes，links Houweizhai to Fenghe Senlingongyuan(Fenghe Forest Park)
On September 29th, the new metro line from Xi’an North Railway Station to Xi’an Xianyang International Airport opened.
According to the plan, more underground railways will be built in Xi’an in the future. These are the subway lines under construction:
地铁5号线 Metro Line 5
计划通车时间/ Estimated to be in operation ：2020/2020
一期：西安东站-和平村 Phase 1: Xi’an East Railway Station—Heping Village
二期：和平村-交大创新港 Phase2: Heping Village—Jiaoda Chuangxin’gang (Jiaoda Innovation Center)
地铁6号线 Metro Line 6
计划通车时间/ Estimated to be in operation
一期2020年、二期2021年 Phase 1 in 2020; Phase 2 in 2021
一期：西安南站-劳动南路；Phase 1: Xi’an North Railway Station—Laodong South Station
二期：劳动南路-纺织城 Phase 2: Laodong South Station—Fangzhicheng
地铁9号线 （临潼线） Metro Line 9 （Lintong Line）
计划通车时间/ Estimated to be in operation ： 2020/2020
Fangzhicheng—Qinhan Dadao(Qinhan Avenue)
Rome wasn’t built in a day, let’s be patient for a better Xi’an city。