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土工布(无纺土工纤维布的简称)是一种新型材料,在国外已被广泛应用于铁路、公路、水利、港口等建筑工程中。近年来,铁道部专业设计院标准处配合北京、广州、上海、柳州、西安等铁路局和铁四院,在加固铁路路基工程中进行了选点试铺工作,有些工点经过1～2个雨季的考验,已显示出明显效果。一、土工布的主要特征及其作用1.利用纤维的毛细作用吸水,并可将吸上来的水经过疏导使之流出,是理想的滤水材料,经铺设一段时间后,土颗粒可能将孔隙堵塞,但透水性仍维持在原有的50%左右,体现出纤维本身的毛细作用并未失效。
Geotextile (abbreviation of non-woven geotextile fabric) is a new type of material that has been widely used abroad in railway, highway, water conservancy, port and other construction projects. In recent years, the Standards Division of the Ministry of Railways’ Specialized Design Institute cooperated with Beijing, Guangzhou, Shanghai, Liuzhou, Xi’an and other railway administrations and the Fourth Railway Institute to carry out trial selection and paving work in the reinforcement of railway subgrade projects. Some sites passed through 1 to 2 The test of the rainy season has shown obvious results. First, the main characteristics of geotextiles and its role 1. The use of fiber capillary water absorption, and can be absorbed through the drainage of water to make it out, is the ideal filter material, after laying a period of time, the soil particles may be pores Blocking, but the water permeability is still maintained at about 50% of the original, showing that the capillary action of the fiber itself has not failed.