A Large-Scale Flow and Tracer Experiment in Granite: 2. Results and Interpretation
A Large-Scale Flow and Tracer Experiment in Granite: 2. Results and Interpretation
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花岗岩中的大规模流动和示踪剂实验：2. 结果和解释
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
I. Neretnieks
中科院分区：
文献类型：
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作者：
H. Abelin;Lars Birgersson;L. Moreno;H. Widén;Thomas Ågren;I. Neretnieks
在Stripa矿特别开挖的巷道中监测了水和示踪剂流量。开发和使用了一些新的实验技术和设备。整个天花板和墙壁的上部覆盖着375个单独的塑料片，可以收集流入漂流物的水。11种不同的示踪剂被注入在11和50米之间的距离从天花板的漂移。流量和示踪剂监测保持了2年多。利用示踪剂穿透曲线和流量分布研究了岩石中的渗流路径、速度、渗透系数、弥散度和窜流效应。在配套文件中的实验设计和进行的实验进行了说明。本文描述了流动和示踪剂在巷道外的岩石运动的解释。通过160多条示踪剂曲线测量示踪剂的运动。示踪剂实验允许流动孔隙度和分散进行研究。还讨论了示踪剂进入岩石基质中的停滞沃茨和裂缝中的停滞沃茨中的沟道和扩散的可能影响。
Water and tracer flow has been monitored in a specially excavated drift in the Stripa mine. Several new experimental techniques and equipment were developed and used. The whole ceiling and the upper part of the walls were covered with 375 individual plastic sheets where the water flow into the drift could be collected. Eleven different tracers were injected at distances between 11 and 50 m from the ceiling of the drift. The flow rate and tracer monitoring was kept up for more than 2 years. The tracer breakthrough curves and flow rate distributions were used to study the flow paths, velocities, hydraulic conductivities, dispersivities and channeling effects in the rock. In a companion paper the experimental design and performed experiments are described. The present paper describes the interpretation of flow and tracer movement in the rock outside the drift. The tracer movement was measured by the more than 160 individual tracer curves. The tracer experiments have permitted the flow porosity and dispersion to be studied. The possible effects of channeling and the diffusion of tracers into stagnant waters in the rock matrix and in stagnant waters in the fractures have also been addressed.