Obvious and different settlements happened in the west extension of the subway that is located in the stratum of Yangtze River valleyflat after the construction of the subway tunneling.
南京地铁西延线位于长江漫滩饱和软粘土地层中，地铁施工完成后隧道结构出现了较大的沉降和差异沉降。
3
A broad valley opened up leading to a high, flat plateau of cultivated land.