Experimental study on water-soil interaction influence for environmental change of marine soft soil

摘要

In this paper, the research object is marine soft soil in Linhai Park of Qinzhou Port and Qisha Park of Fangchenggang Port. The marine soft soil environment factors, additional load stress of coastal reclamation layer and calcium ions of pore water chemical composition, were simulated by using a soil soaking-load linkage. The soil soaking-load linkage is mechanism simulation device. Impact on water-soil interactions of marine soft soil was analyzed for additional load stress of coastal reclamation layer and calcium ions of pore water chemical composition. The conclusion is as follows. Firstly, from the point of geotechnical engineering, there are mainly hydraulic connection, water chemical field and additional load stress of coastal reclamation layer for the soil and water environmental change of marine soft soil in coastal reclamation district. Secondly, the soil and water environmental change of marine soft soil in coastal reclamation district is simulated by using a soil soaking-load linkage. Thirdly, under the some circumstances of the calcium ions concentration of soak solution, the consolidation deformation of aritificial soil samples come up under the action of additional load stress, consequently, artificial soil samples' porosity decreases. Artificial soil samples' porosity and osmotic coefficient decreases along with the increase of additional load stress of coastal reclamation layer. Artificial soil samples' calcium ions content decreases along with the increase of additional load stress of coastal reclamation layer. Fourthly, under the same circumstances of the additional load stress of coastal reclamation layer, artificial soil samples' calcium ions content increases along with the increase of calcium ions concentration of soak solution. Fifthly, artificial soil samples' porosity and osmotic coefficient decrease slightly along with the increase of the calcium ions concentration of soak solution under the same circumstances of the additional load stress of coastal reclamation layer with the exception of 180 kPa in Linhai Park of Qinzhou Port.