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依据雷州半岛以东的东海岛滨海地下水测井潮周期取样测试数据,以Cl-为保守离子,应用了物理混合理论方法,探讨了在海水入侵过程中通过孔隙介质时K+的迁移性。结果显示,K+含量呈现波动势态,绝对含量明显低于Cl-、Na+,但相对变化幅度则与两者相近;其保守性低于Na+和Mg2+,实测数据点均位于理论稀释线TDL的下方,通过孔隙介质之后K+具有明显的向固相迁移行为;实测K+以及理论计算的ΔK+与Cl-同样保持线性关系,ΔK+在两个潮周期平均依次为-22.30mg/L和-14.37mg/L,潮周期逐时变化曲线与Ca2+具有反相特征,K+同样参与了阳离子置换,ΔγK+在-1.75~-0.09meq/L之间,其时间变化趋势有线性和对数缓慢单增关系。
Based on the sampling data of the logging period of the groundwater in the East China Sea on the east coast of the Leizhou Peninsula, Cl - is used as a conservative ion and a physical mixing theory is applied to investigate the migration of K + through the pore medium during seawater intrusion. The results showed that the content of K + fluctuated and its absolute content was significantly lower than that of Cl- and Na +, but the relative change range was similar to both. The conservation was lower than that of Na + and Mg2 + After passing through the pore medium, K + has obvious migration to the solid phase. The measured K + and the calculated ΔK + also have the same linear relationship with Cl-. The average of ΔK + in the two tidal cycles is -22.30mg / L and -14.37mg / L, The time-lapse curve of the tidal cycle is opposite to that of Ca2 +. K + is also involved in the cation exchange. The ΔγK + is between -1.75 and -0.09 meq / L, and the trend of time is linear and logarithmically slowly increasing.