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在水利水电水文地质工程地质勘测和大坝岩石基础灌浆工程及其防渗效果检查中,一直广泛地采用压水试验来测定岩石的渗透性。压水试验的成果数值,是用单位吸水量ω来表示的,即在相当于1米高的水头作用下,岩石钻孔中每1米段长,每1分钟内,渗入岩石裂隙中的水的升数,其计量单位为升/分·米·米。这里,ω仅是表示岩石渗透性的指标,其本身并不是一个固定的渗透值。如反映某岩石的渗透性,须用“单位吸水量或ω等于(或是)多少多少升/分·米·米”的方式来表示。这种反映岩石渗透性的方法,不论在口述上或在文章叙述上都欠简便。为了能更简练地表示岩石的渗透性,并易于与国际上常用的渗透
In hydroelectric hydrogeological engineering geological survey and dam rock foundation grouting project and its anti-seepage effect inspection, has been widely used water pressure test to determine the rock permeability. The result of the water pressure test is expressed in units of water absorption ω, that is, water is infiltrated into the rock fracture every 1 meter long and every 1 minute under the equivalent of 1 meter head, Liters in liters, measured in liters / min · m · m. Here ω is only an indication of rock permeability and is not itself a fixed permeability. If it reflects the permeability of a rock, it must be expressed as “unit water absorption or ω equal to (or how many) l / m · m”. This method of reflecting the permeability of rocks, either verbally or in the narrative, is less convenient. In order to more concisely indicate the permeability of rocks, and easy to penetrate with the international community