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本文对深圳河治理工程边坡防护反滤运行期的土工布进行综合试验研究,分析土工布长期运行过程中渗透性、保土性、淤堵性能,从强度损失角度分析土工布长期运行的强度衰减情况,并且对土工布的耐久性进行试验分析。由试验知,土工布渗透系数降低约100倍左右,而土工布强度降低了50%左右,强度衰减速率小于0.26%/月。整个试验表明,土工布进入稳定渗透期和强度因腐蚀和蠕变的稳定衰减期,土工布满足了防护反滤的要求。
In this paper, the comprehensive experimental study on the geotextile in the Shenzhen River protection project during the slope protection and filtration operation period is carried out. The permeability, soil conservation and sedimentation performance of the geotextile during long-term operation are analyzed. The strength of geotextile’s long-term operation is analyzed from the point of strength loss Attenuation, and the durability of geotextile test analysis. From the test, geotextile permeability coefficient decreased about 100 times, while the geotextile strength decreased by about 50%, the intensity decay rate of less than 0.26% / month. The whole experiment shows that the geotextiles enter the period of steady infiltration and the steady decay period of the strength due to corrosion and creep, and the geotextile meets the requirements of protection and filtration.