泥质潮滩水盐运移过程电阻率探针高精度监测效果分析  

High-Precision Monitoring Effect Analysis of Resistivity Probe in theWater and Salt Transport Process in Muddy Tidal Flat

作　　者：李明波 张宇丰 郭秀军[3,4] 吴振 武斌 马健 聂佩孝 Li Mingbo;Zhang Yufeng;Guo Xiujun;Wu Zhen;Wu Bin;Ma Jian;Nie Peixiao(No.4 Exploration Institute of Geology and Mineral Resources,Weifang 261021,China;Key Laboratory of Coastal Zone Geological Environment Protection,Shandong Geology and Mineral Exploration and Development Bureau,Weifang 261021,China;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Qingdao 266100,China)

机构地区：[1]山东省第四地质矿产勘查院,山东潍坊261021 [2]山东省地矿局海岸带地质环境保护重点实验室,山东潍坊261021 [3]中国海洋大学环境科学与工程学院,山东青岛266100 [4]山东省海洋环境地质工程重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2024年第4期106-115,共10页Periodical of Ocean University of China

基　　金：山东省第四地质矿产勘查院科技创新项目(KJ2106);山东省地矿局科技公关项目(KY202206);潍坊市财政基金项目(SDGP370700202102000413);山东省地下水环境保护与修复工程技术研究中心(筹)开放基金项目(201703075-57)资助。

摘　　要：本研究在莱州湾泥质潮滩开展测试,量化分析了环状电阻率探针监测沉积物电阻率与孔隙水盐度变化的能力,并使用该技术初步刻画了细粒沉积层中水盐运移过程。结果表明,环状电阻率探针监测结果可精细描述沉积物电阻率的分布及变化规律;基于监测结果换算的孔隙水盐度变化比与实际孔隙水盐度变化比存在±10%的误差,环状电阻率探针具有粗略定量分析泥质潮滩水盐运移过程的能力;潮汐循环中泥质潮滩地下水水盐运移过程在涨潮时期,高盐度水体主要补给细粒沉积层的顶部与底部。高潮时期间,细粒沉积层顶部与底部的盐分逐步丧失,中部水体盐分累积速率加快。退潮时期,细粒沉积层盐分整体丧失,高盐度水体通过渗出面向外释放。The water and salt transport process in fine-grained sediments of muddy tidal flat has not been described in detail so far.The ring electrode resistivity probe monitoring is a new method to describe this process,but its resolution of pore water salinity change is unknown.In this study,in-situ tests were carried out on the muddy tidal flat of Laizhou Bay.The ability of ring electrode resistivity probe to monitor the sediments resistivity and pore water salinity change was quantitatively analyzed,and the water and salt transport process was preliminarily described by using this method.The research results show that the ring electrode resistivity probe monitoring results can accurately describe the distribution and variation of fine-grained sediments resistivity.Pore water salinity change ratio converted based on monitoring results and the actual pore water salinity change ratio have an±10%error.The ring electrode resistivity probe has the ability to roughly and quantitatively analyze the water and salt transport process in muddy tidal flat.Under the tidal influence,the water and salt transport process in muddy tidal flat underground is as follow:During the flood tide,the high salinity water mainly supplies the top and bottom of thefine-grained sediments layer.During the high tide,the salt at the top and bottom of the fine-grained sediments layer began to gradually lose,but the salt accumulation rate in the middle of the fine-grained sediments accelerated.During the ebb tide,the whole fine-grained sediments layer lost its salt,and the high-salinity water is released outward through the seepage.

关 键 词：环状电极电阻率探针 泥质海岸 水盐运移过程 监测效果 盐度变化比 

分 类 号：P345[天文地球—水文科学]