库区地下水位变化对抬田土壤保水层影响研究

Study onthe Field Soil's Water Retention Layer for Variation of Groundwater Level in Reservoir Area

结合峡江水利枢纽库区抬田工程建设研究,开展库区地下水位变化对多元结构抬田保水层土壤结构性能的影响研究。结果表明:当峡江水利枢纽蓄水至正常高水位后,库区地下水位变化对多元结构抬田土壤保水层容重、饱和渗透系数、孔隙度影响较小,3组监测数据的变异系数均小于0.3,数据分布较为平稳,波动不大。

In this paper, it analyzed the influence of reservoir water level variation to the soil structure property of soil conservation layer of multi-base foundation by combining with the study on the project of Xiajiang Reservoir construction. The outcomes show that the soil bulk density, soil saturated infiltration coefficient and porosity are less affected by the alternation of reservoir water level when the project of Xiajiang Reservoir storage capacity attains the normal high water level. The test data by descriptive statistical analysis shows that the coefficients of variation of three sets of data were less than 0.3. In the research, the data distribution is relatively stable and the data was little changed.