A separation method of ground water from runoff by dissolved and partial pressure of carbon dioxide gas

一种利用二氧化碳气体溶解分压从径流中分离地下水的方法

• 批准号: 03805044
• 负责人: OKIMURA Takashi
• 金额: $ 0.96万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03805044/
• 关键词: Dissolved carbon dioxide gas; Partial pressure of carbon dioxide gas; Runoff water; Runoff separation; Ground water; Granite; Small catchment in mountainous area; Weathering; 溶存炭酸ガス分圧; 花崗石; 愛化

Yoshioka who is a investigator of this project examined the relationship among the calculated dissolved carbon dioxide gas, bicarbonate contents and pH in the ground water sampled from various area. He reported the following results ; (1)The mode value of partial pressure distribution of carbon dioxide gas was found at 10^<-2.3> atmosphere in landslide areas, but at 10^<-3.1> atmosphere in granite areas, (2)A possibility of distinction between stream and ground water from water quality was found by using a pH-HCO_3^--PCO_2 diagram, etc.The object of the research is to examine the view. The test field is placed on a mountain slope composed of granite and is 0.3 ha in area. In the field, the head investigator of this project was reported elsewhere that a translatory flow was recognized at the beginning of runoff. Observations and sampling of water were started from October, 1992, made in every week, and is continued over one year.Waters are sampled at various points ; (1) horizontal bore … More holes which were drilled to drain water contained in a base rock(point name as 1,2 and 4), (2) vertical bore holes which were drilled to collect water in a surface soil layer(point name as A-E), (3) a seepage out point in the test field(point name as 10G), (4) runoff water from the test field(point name as 10).From the apparent sampling sites, ground water is seemed to be those from horizontal and vertical bore holes and from a seepage out point. Stream water is supposed to be runoff water. But the result shows that the water sampled at a seepage point is classfied as stream water, and the runoff water, as ground water. The water sampled from a seepage out point is that of a drop of water which fall down along roots of plants. A sampling bottle is placed below the roots during one week. The water, therefore, is supposed as ground water. The data of this seepage out water, sometimes, scattered on the diagram in comparison to other data. This scattering is found to be caused by the total amount of rainfall in a week. Then, it concluded that the origin of seepage out water is rainwater. The pH-HCO_3^--PCO_2 diagram, therefore, shows that the seepage out water is stream one.The sampling point of runoff water is placed at a head hollow on a mountain slope. The runoff water, therefore, is considered to be classified as ground water. Thus, we can distinguish stream water from ground water by the pH-HCO_3^--PCO_2 diagram.The result of runoff water shows that data which was sampled at two hours later after the stop of a heavy rainfall is plotted near to the area of stream water on the diagram. The result suggests that a possibility of distinction between stream water and ground water is made by quality of water sampled during a heavy rainfall. Less

该项目的研究员Yoshioka研究了从各个地区取样的地下水中计算出的溶解二氧化碳气体、碳酸氢盐含量和pH值之间的关系。他报告了下列结果：（1）在滑坡区，二氧化碳气体分压分布的众数值在10个大<-2.3>气压，而在花岗岩区，则在10个大<-3.1>气压。（2）用pH-HCO_3^--PCO_2图等方法，发现了从水质上区分溪流和地下水的可能性。试验田位于由花岗岩组成的山坡上，面积为0.3公顷。在现场，该项目的首席调查员在其他地方报告说，在径流开始时发现了径流。从1992年10月开始，每周进行一次观测和取样，连续一年多，沃茨取样点为：（1）水平钻孔 ...更多信息 为排出基岩中的水而钻的洞（点名称为1，2，4），（2）垂直钻孔，用于收集表层土壤中的水（点名为A-E），（3）试验场内的一个渗漏点（点名为10 G），（4）试验场径流水（点名为10）.从表观取样点看，地下水似为水平钻孔、垂直钻孔及渗漏点的地下水。溪水应该是径流水。但结果表明，在渗流点取样的水被归类为河流水，径流水被归类为地下水。从渗出点取样的水是沿着植物的根沿着落下的水滴。在一周内将取样瓶放置在根部下方。因此，水被认为是地下水。这种渗水的数据，有时，分散在图表上的其他数据相比。发现这种散射是由一周内的降雨总量引起的。从而得出了渗漏水的来源是雨水的结论。pH-HCO_3^--PCO_2图表明，该地区的渗漏水为径流水，径流水取样点位于山坡上的一个水头凹处。因此，径流水被视为地下水。对径流水的分析结果表明，暴雨停止后2 h取样的数据在图上的位置靠近溪流区，而在降雨停止后2 h取样的数据在图上的位置靠近溪流区。结果表明，通过强降雨期间采样的水质可以区分溪流水和地下水。少

项目成果

沖村 孝,吉岡 龍馬: "炭酸ガス分圧を利用した地表水と地下水への分類の試み" 1993年水文・水資源学会研究発表会.

Takashi Okimura、Ryoma Yoshioka：“尝试使用二氧化碳气体分压对地表水和地下水进行分类”1993 年水文学和水资源研究学会会议。

沖村 孝,吉岡 龍馬: "pH値およびHCO_3^-濃度を用いた地表水と地下水への区分" 土地造成工学研究施設報告、11.

冲村隆、吉冈龙马：“利用pH值和HCO_3^-浓度分类地表水和地下水”土地复垦工程研究设施报告，11。

Takashi OKIMUTA & Ryuma YOSHIOKA: "A distinction between surface and ground water by partial pressure of carbon dioxide gas" Meeting of Japan Society of Hydrology and Water Resources. (1993)

冲牟田隆

沖村 孝・吉岡 龍馬: "pH値およびHCO_3^-濃度を用いた地表水と地下水への区分" 土地造成工学研究施設報告、11、投稿予定。.

Takashi Okimura 和 Ryoma Yoshioka：“利用 pH 值和 HCO_3^-浓度分类地表水和地下水”土地复垦工程研究设施报告，11，计划提交。

Takashi OKIMURA & Ryuma YOSHIOKA: "A distinction between stream and ground water by pH and dicarbonate contents" Bulletin of Reclamation Engineering Research Institute, Faculty of Engineering, Kobe University.

冲村隆