ABSTRACT
Qisha Park of Fangchenggang Port completed by hydraulic filled sand, and applied directly to the engineering facilities construction after foundation treatment was fulfilled (Liu et al. 2012, Hu 2009). Third, the load of coastal reclamation layer to underlying layer strata is great. Coastal reclamation district extends gradually from tidal flats to shallow sea, along with the construction technology of Coastal reclamation become mature and demand for land use area increase. Thickness of coastal reclamation layer increase sharply, therefore the load of coastal reclamation layer to underlying layer strata also increase sharply. The depth of railway feeder hydraulic filled sand project from Dalanping to Qinzhou Free Trade Area is as deep as decade meters. Disturbance of environment of marine soft soil is extremely severe because of coastal reclamation compare with the formation of the natural evolution process of marine soft soil. Marine soft soil and its formation of the natural geological environment are a relatively stable state of dynamic
1 INTRODUCTION
Since the 21st century, large-scale coastal reclamation engineering was created in our country (Ge et al. 2014, Sun et al. 2012, Dong et al. 2014). Much of the coastal reclamation engineering is industry and urban construction land such as Linhai Park of Qinzhou Port and Qisha Park of Fangchenggang Port. There is a mass of soft soil in coastal reclamation district (Liu et al. 2014, Yi et al. 2015, Ou et al. 2015). The kind of project such as the coastal reclamation engineering has the following characteristics. First, the area of coastal reclamation land is large, according to the overall planning of Qinzhou City during 2008 to 2025, the total coastal reclamation area will reach about 79 km2. Second, the schedule of coastal reclamation land is fast, the time is shorter that the coastal reclamation land use for industrial and urban construction land from construction to use. The coastal reclamation engineering of Linhai Park of Qinzhou Port and
balance before coastal reclamation. The state of marine soft soil deposition would change rapidly after a violent disturbance of coastal reclamation, and its environment would achieve a new dynamic equilibrium.
