吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (6): 1706-1713.doi: 10.13278/j.cnki.jjuese.20190051
束龙仓1, 王明昭1, 张惠潼2, 张含明2, 张乃鹏2, 孙影2, 孙超2, 袁鹏杰2
Shu Longcang1, Wang Mingzhao1, Zhang Huitong2, Zhang Hanming2, Zhang Naipeng2, Sun Ying2, Sun Chao2, Yuan Pengjie2
摘要: 准确确定咸淡水界面位置是评价咸水入侵范围的前提。对于咸淡水界面位置的确定,传统研究以水化学法和物探法为主。为克服单一使用传统方法造成的人力、物力和财力的大量浪费,以莱州湾西南岸广饶县小清河以南咸水入侵区为研究对象,在综合分析研究区地下水开采现状、水化学监测结果的基础上,选择3个典型断面,采用水化学法中的野外现场电导率法,快速判断咸淡水界面大致位置(某两眼监测井之间);再在一咸一淡的两眼监测井之间,采用高密度电阻率法快速、准确地确定咸淡水界面的空间分布。结果表明:该地区的地下水电导率若大于1.61 mS/cm,即可认为此处受到咸水入侵;咸淡水界面位置的视电阻率特征值为11~13 Ω·m,咸淡水界面附近咸水体呈舌状入侵并主要发生在地表以下13 m内的浅层地下水中。
中图分类号:
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