Based on the established models on the trailing suction hopper dredger (TSHD), this article focuses on the effect of sail parameters to the accuracy of the model. With the change of the dredging sites, dredging soil will change. Parameters related to soil of the original model will no longer apply to new dredging environment. This paper uses the genetic algorithms to estimate the soil parameters in different working conditions. And the verification result compared with experience and pattern search method furtherly shows the specific advantages of genetic algorithms.%在耙吸挖泥船疏浚模型建立的基础上，着重研究了三个与土壤相关参数对模型准确性的影响。随着疏浚场所的改变，疏浚的土质将发生变化。原有模型中使用的与土壤相关的参数将不再试用于新的疏浚场所。这篇文章运用遗传算法针对不同疏浚工况进行了与土壤相关参数的重新估算。并且与经验值、模式搜索法得到的结果进行了比较，进一步阐述了遗传算法的具体优势。
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