Recent，Undertaken by the Geotechnical Survey and Planning Institute，The construction survey and setting-out work of the 120,000-acre ditch control and land reclamation project assisted by the Yan'an Branch of China Geo Construction was successfully completed。

The survey and release scope covers 12 counties (districts) in Yan'an City，Tight project schedule、Heavy task，All employees of the hospital went to the front line of the project in 10 batches，Overcame the large drop in the mountain、A thicket of thorns、Multiple difficulties such as complex terrain such as swamps and physical fitness tests，After 45 days of hard work，Completed the measurement task ahead of schedule，Once again demonstrating the speed of land construction。

Measurement period，Wang Tao、Sun Kehong and many other comrades voluntarily gave up their holidays to fight continuously，Due to high intensity、Long time hiking in the wild，Many comrades still stick to the front line of surveying and mapping dafabet mobile appeven though their leg joints are severely worn。

This line-laying work has trained the team，Improved quality，Practice the model worker spirit with practical actions，Also张Shows the unity of land construction, surveying and mapping people，The spirit of the metropolitan railway army in overcoming difficulties。