Polypropylene filament drainage geotextile

The utility model relates to a polypropylene filament drainage geotextile, which comprises two layers of geotextile, the inner side surface of the first layer of geotextile is provided with uniformly distributed lug bosses, the end parts of the lug bosses and the second layer of geotextile are compounded into a whole through hot pressing, and a micro-channel for drainage is formed between the two layers of geotextile; the micro-channel drainage geotextile is reasonable in structural design, a micro-channel can be formed between the two layers of geotextile through the arrangement of the protruding parts, the micro-channel drainage geotextile is used for micro drainage, the on-site drainage requirement is met, the micro-channel drainage geotextile has the advantages of being low in cost and small in thickness, meanwhile, the whole drainage geotextile can be packaged, transported and installed, and working efficiency is guaranteed. 本实用新型涉及一种聚丙烯长丝排水土工布，包括两层土工布，第一层土工布的内侧表面设有均匀分布的凸起部，且凸起部端部与第二层土工布热压复合为一体，两层土工布之间构成