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土的渗透性是指水在土孔隙中渗透流动的性能。土孔隙中自由水在重力作用下,透过土孔隙流动的现象称渗透。渗透表明了水通过土孔隙的难易程度。土的渗透性对土木工程选址、基坑开挖、基坑工程对周围建筑物的影响、基坑工程的防水、防潮及在农业、水利、环境保护等许多领域密切相关。
Soil permeability refers to the permeability of water in the pores of the earth. Free water in the soil pores under the action of gravity, the phenomenon of flow through the soil pores known as infiltration. Penetration shows how easy water is to pass through the soil pores. The permeability of soil is closely related to the selection of civil engineering sites, the excavation of foundation pit, the influence of foundation pit engineering on the surrounding buildings, the waterproofing and moisture proof of foundation pit engineering and many fields of agriculture, water conservancy and environmental protection.