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无纺土工织物在不同压力下孔径分布与透水性的研究

On Relationship between Porous Size Distribution and Permeability for Non-woven Geotextile under Pressure

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【作者】 速宝玉刘圭念张祝添

【Author】 Su Baoyu Dept. of Hydro-Power Eng.Liu Guannian Dept. of Irrigation. and Drainge Eng.Zhang Zhutian Dept. of Hydro-Power Eng.

【机构】 河海大学水力发电工程系河海大学农田水利工程系河海大学水力发电工程系

【摘要】 本文给出了针剌无纺土工织物在压力状态下的渗透性和孔径分布的试验成果,以及针刺无纺土工织物孔径随压力变化的曲;指出了低压力区孔径、渗透性随压力变化梯度大的共同规律;阐明低压区针刺无纺土工织物渗透变化大的机理;对水工建筑物中用织物排渗的透水性要求提出了建议.

【Abstract】 Experimented results of non-woven geotextiles permeability and prous size distribution under different pressure are presented . The porous size distribution under pressure is measured. The relationship betweem the non-woven geotextie porou size distribution and pressure is obtained . Experiments show that the greater variation of permeability and porous size distribution have taken place in the low pressure zone . The mechanizm of variation of non-woven geotextiles permeability is explained . The authors propose a code of the seepage control in the hydrostructure using the non-woven geotextile as a drainage measure.

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