| Panjin port is located in the south of liaoning panjin merchant,facing the bohai sea,is located in the liaohe plain in the south of liaohe delta,vast hinterland,the geographical position is superior,the panjin port 65 nautical miles from jinzhou port,south is apart from the port of yinkou Ba Yu Juan port 37 miles,due to the need of port construction,silt soil has gradually become the region’s main construction of the foundation soil.Because its physical and chemical properties are very unstable,it has great influence on the safety and stability of engineering.Therefore,it is necessary to analyze the particle composition,physical and mechanical analysis and engineering characteristics of silt soil.This paper combines the previous scientific research data,and on the basis of field investigation and sampling,using the research ideas of indoor and outdoor experiments.By laser particle size test and chemical test,obtained the panjin port area granularity characteristics of silt soil,chemical elements and characteristics of mineral composition and then obtained the silt soil in the study area according to indoor and outdoor experiments the main physical parameters and mechanical parameters,and finally,the test data and information integration,and USES the grey correlation method to analysis the influence relationship between elements of silt soil engineering characteristics.Draw relevant conclusions based on the test results:(1)From the observation of the components of the silt soil in the area on the particle size characteristics,it can be known that the main component of the soil is clay particles,that is,particles with a diameter of less than 0.0039 mm,which account for 51.35% of the whole;The second is silt(with a diameter of 0.0039 mm to 0.0625mm),which accounts for 42.48% of the entire silt;the sand content is the lowest,only 6.17%.According to the calculation of the main parameters of particle size,the particle size of silt and soil in Panjin Port area is generally fine and its sorting ability is weak.(2)According to the characteristics of chemical molecular content of silt in Panjin Port area,Al2O3、Fe2O3、Si O2、and K2 O content is relatively high,The proportion reached 84.67%.Among the main elements,the content of Si,Ca,Mg,and Na is relatively wet,and Fe,K,Al and Ti are relatively enriched.Among the trace elements,there is only less P,and other elements,such as Mn,Zr,Ba,Cl,Cu,Ni,Rb,Cr,Sr and other elements are relatively enriched.Through the analysis of the value of chemical molecular variables,the humidity and enrichment of these chemical elements represent the climate is basically the same as the natural environment.In general,the natural climate of the region is relatively warm and humid,and the temperature varies greatly.(3)According to the results of indoor geotechnical experiment and outdoor experiment,it is concluded that the pure natural water content of this silt soil has exceeded the liquid level limit,reaching 40.2%.The sample is in a flexible-fluid state.And the silt soil has the engineering characteristics of low bearing capacity,high sensitivity and large compressibility.In addition,it was found in indoor and outdoor experimental tests that its mechanical variable values are different indoors and outdoors,and the values in outdoor tests are higher.(4)By calculating the grey correlation value,it can be concluded that at the level of the physical properties and particle size distribution characteristics of particles,it is found that the engineering characteristics related factors are related to the bearing capacity,and the correlation is specifically expressed as: the proportion of pure natural water content > average particle size > and pure natural relative density >,and The influence of these factors on the bearing capacity of silt soil slowly decreases. |
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