继土木工程学院研究生“英语角”活动胜利开幕后，5月28日，系列活动第一季正式展开，根据来自伊拉克的Yousif博士的建议，土木工程学院博士研究生辅导员梁洁老师和国际处倪雯老师带领来自巴基斯坦、乌兹别克斯坦等国的9名留学生及土木学院08、09级的11名博士研究生参观了成都地铁2号线施工现场。这篇文章是伊拉克博士生yousif写的参观见闻。

At the 28-5-2010, the civil engineering school arranges visiting to Chengdu metro for Chinese and foreign students with that includes visiting china railway 13, 14 bureau group second engineering company. we received warm welcome from the representative of projects,”Mr Li Runze and other”. They described the design for Chengdu metro line 2. We saw the rail way tunnel which about the 2km long and also saw the drilling mechanized. In the china railway 14 bureau group second engineering company, we welcomed from Mr. Wang. We saw construction structural for the station.

The following General information about the Chengdu metro and also about china railway 13, 14 bureau group second engineering company:

· Chengdu is planning an underground Metro network with 7 lines, totaling 274.15km, to be completed by 2035. As following :

Line 1: Dafeng to Guangdu, 31.6km (underground 22.44km, aboveground 9.16km), 23 stations (18 underground stations, 5 elevated stations).

Line 2: Longquandong to Shiniu, 50.65km (underground 17.45km, aboveground 33.2km), 26 stations (15 underground stations, 11 elevated stations).

Line 3: Hongxin Chezhan to Banqiaonan, 49.28km (underground 15.59km, aboveground 33.69km), 22 stations (11 underground stations, 11 elevated stations).

Line 4: Wenjiang to Xihe, 38.9km (underground 20.21km, aboveground 18.69km), 19 stations (11 underground stations, 8 elevated stations).

Line 5: Simaqiao to Jianghe, 24.63km (underground 17.9km, aboveground 6.73km), 13 stations (11 underground stations, 2 elevated stations).

Line 6: main line: Shawan to Sihe,22.05km (underground 15.5km, aboveground 6.55km), 13 stations (11 underground stations, 2 elevated stations).

Line 6 branch line: Bolichang to Shuangliu Airport, 15.11km (underground 5.52km, aboveground 9.59km), 8 stations (4 underground stations, 4 elevated stations).

Line 7: Shengtai to Longtandong , 41.93km (underground 29.63km, aboveground 12.3km), 22 stations (17 underground stations, 5 elevated stations).

Lines 1 and 2, total length 82.25km, will be opened before 2014. The phase 1 of line 1 (16km, 15 stations) will be in trial operation in March 2010 and formal opening in 1 Oct 2010. Work began in Dec. 2005.

For more information check the web sitehttp://www.cdmetro.cn/

· The china railway 13bureau group second engineering company constructed the line2 from Chengdu metro.

The company used the German drilling mechanic to dig under the ground that with ability 80mm/min and pressure 3 bar.

· The constructed two ways and about 2km from line 2 to yet. The circle rail way tunnel constructed by precast concrete at the depth around 14m under the ground and with the diameter of about 12 m.

· The china railway 14bureau group second engineering company constructed the station on line 2. We notice the method to treat the leakage at concrete.

Also the company changes the direction of the way because there is some house in the way and the owner of house doesn’t allow to metro line through his house.

Finally we are interested with this visiting. We are grateful to civil engineering school, the company groups, Miss Liang , and Miss Ni who help us too much.

Thanks

Ph. Student Yousif A.Mansoor

28-5-2010