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在乌江渡水电站坝基的防渗帷幕施工过程中,在左岸深部陆续发现了不少规模较大的岩溶洞穴。为了查明这些洞穴的发育特征及其对工程的影响,我们进行了一些专门性的探测和试验工作。利用氚作为天然同位素示踪,是其中的一种方法。1979年,采集了部分水样进行实测;1980年元月,当水库蓄水位达700米高程时,开展系统地采集地下水样进行氚浓度的测定。
During the construction of anti-seepage curtain of the dam foundation of Wujiangdu Hydropower Station, many large-scale karst caves have been found one after another in the deep of the left bank. In order to identify the developmental characteristics of these caves and their impact on the project, we conducted some special exploration and experimental work. One of these methods is the use of tritium as a natural isotope tracer. In 1979, some water samples were collected and measured; in January 1980, when the reservoir water level reached a height of 700 meters, groundwater samples were systematically collected for tritium concentration determination.