The reconstruction site is located in the west of Heilongjiang Province, on the alluvial terrace of Songhua River and Nenjiang River in Songliao plain, which is relatively gentle with little fluctuation. The absolute elevation of the ground is 144.56 ~ 144.75m, and the surface runoff condition is poor. The site is located in the depression area in the hinterland of Songliao Basin, and the geological structure is XINHUAXIA subsidence zone. The terrain of the proposed project is flat without adverse geological phenomena. The stratum can be divided into three layers from top to bottom, namely clay, silt and clay. The ground endurance is about 190kpa / m2.