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在城市地区,地下水易产生多种不同的应力作用。其中之一是高流量开采地下水会导致形成水压异常、水地球化学异常和蓄水层内的热异常.以及岩溶潜蚀作用的加剧(所谓潜蚀即沉积物受地下水机械和侵蚀而运移的逐渐损坏过程)。通常可用多种不同的调查方法或综合方法来圈定喀斯特地带。而这些熟知的方法耗力,花费大,效率低,且不宜用于城市地区.在这种情况下,氦气测量法可作为一种可行的.供选择的常用技术加以有效地应用。本文介绍了该方法在城市地区圈定石炭纪碳酸盐岩喀斯特地带的实例,并将氦气测量资料与水地球化学、热力学和氚气测量资料作了对比.
In urban areas, groundwater is prone to many different stresses. One of them is the high flow rate of groundwater that causes the formation of water pressure anomalies, hydrogeochemical anomalies, and thermal anomalies in aquifers, as well as the exacerbation of karst erosion (the so-called eroded sediments that are transported by groundwater machinery and erosion Gradual damage process). The karst zone can usually be delineated by a number of different survey methods or synthetic methods. These well-known methods, however, are labor-intensive, costly, inefficient, and unsuitable for use in urban areas, where helium gas measurement can be effectively applied as a viable alternative technique. This paper presents an example of delineation of Carboniferous carbonate karst zones in urban areas by this method and compares the data of helium with water geochemistry, thermodynamics and tritium measurement data.