| 时域反射技术测量海洋沉积物含水量的研究 |
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| 引用本文： | 胡高伟,业渝光,刁少波,张剑,刘昌岭.时域反射技术测量海洋沉积物含水量的研究[J].现代地质,2010,24(3):622-626. |
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| 作者姓名： | 胡高伟 业渝光 刁少波 张剑 刘昌岭 |
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| 作者单位： | 1.国土资源部 海洋油气资源与环境地质重点实验室，山东 青岛266071；2.国土资源部 青岛海洋地质研究所，山东 青岛266071；
3.中国地质大学 地球科学学院，湖北 武汉430074 |
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| 基金项目： | 国家自然科学基金项目，国家"海域天然气水合物资源调查与评价"专项项目，国土资源部海洋油气资源与环境地质重点实验室基金项目 |
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| 摘 要： | 时域反射技术(TDR)已被广泛应用于农业、地学等领域的水体分布特征研究。经实验发现，当沉积物孔隙水的盐度高于约0.5%时，利用传统的TDR探针无法测量沉积物的含水量。通过对TDR探针进行改进，发现加套管的TDR探针可以测量高盐分沉积物的含水量。观测了向干砂中加入盐度为0、0.5%、2%和3.5%溶液过程中介电常数的变化情况，初步建立了此种情况下沉积物的介电常数与含水量间的经验关系式。这一研究将为TDR在海洋沉积物含水量和水合物饱和度测量等方面的应用提供新的方法与思路。
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| 关 键 词： | 时域反射技术 含水量 高盐度 海洋沉积物 套管探针 |
Research of Time Domain Reflectometry in Measuring Water Content of Marine Sediments |
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| HU Gao-wei,YE Yu-guang,DIAO Shao-bo,ZHANG Jian,LIU Chang-ling.Research of Time Domain Reflectometry in Measuring Water Content of Marine Sediments[J].Geoscience——Journal of Graduate School,China University of Geosciences,2010,24(3):622-626. |
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| Authors: | HU Gao-wei YE Yu-guang DIAO Shao-bo ZHANG Jian LIU Chang-ling |
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| Institution: | 1.Key Laboratory of Marine Hydrocarbon Resources and Environment Resources, Ministry of Land and Resources, ;
Qingdao, Shandong266071, China; 2.Qingdao Institute of Marine Geology, Qingdao, Shandong266071, China;
3. Faculty of Earth Sciences, China University of Geosciences, Wuhan, Hubei430074, China |
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| Abstract: | Time Domain Reflectometry(TDR) has been widely used in water system investigation in agriculture,geosciences,etc.The experiments in this paper show that with a conventional TDR probe we can not measure water content of the sediment where pore water salinity is higher than about 0.5% in weight.Therefore,a coated TDR probe was developed and successfully used in measuring water content of the high-salinity sediments.The dielectric constants were observed when adding solutions with 0,0.5,2 and 3.5 percent of salinity to the dry sands respectively,and the results were used to reveal the empirical relations between water content and dielectric constants,which enabled us measuring water content of marine sediments with TDR.The study have significances for introducing TDR technology in measuring water content and hydrate saturation of marine sediments. |
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| Keywords: | Time Domain Reflectometry water content high salinity marine sediment coated probe |
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