He ʻano ʻano mea geosynthetic hou ʻo ka ʻupena geodrainage composite thri-dimensional. ʻO ke ʻano o ka haku mele he ʻekolu-dimensional geomesh core, ua hoʻopili ʻia nā ʻaoʻao ʻelua me nā geotextiles non-woven. Aia ka 3D geonet core i kahi iwi ʻaoʻao mānoanoa a me ka iwi ʻaoʻao diagonal ma luna a me lalo. Hiki ke hoʻokuʻu koke ʻia ka wai lepo mai ke alanui, a he ʻōnaehana mālama pore e hiki ke ālai i ka wai capillary ma lalo o nā haʻahaʻa kiʻekiʻe. I ka manawa like, hiki iā ia ke pāʻani i ka hana kaʻawale a me ka hoʻoikaika paʻa.
ʻO ka ʻauwai makapō palaki he ʻano mea hoʻoheheʻe geotechnical i haku ʻia me ke kumu plastik a me ka lole kānana. Hana nui ʻia ke kumu plastik i ka resin synthetic thermoplastic a ua hoʻokumu ʻia ka ʻōnaehana ʻekolu-dimensional e ka extrusion hoʻoheheʻe wela. Loaʻa iā ia nā hiʻohiʻona o ka porosity kiʻekiʻe, ka hōʻiliʻili wai maikaʻi, ka hana hoʻoheheʻe ikaika, ke kūpaʻa paʻa ikaika a me ke kūpaʻa maikaʻi.
ʻO ka paipu permeable palupalu kahi ʻōnaehana paipu i hoʻohana ʻia no ka hoʻoheheʻe ʻana a me ka hōʻiliʻili wai, ʻike ʻia hoʻi he ʻōnaehana hose a i ʻole ʻōnaehana hōʻiliʻili. Hana ʻia ia me nā mea palupalu, maʻamau nā polymers a i ʻole nā mea fiber synthetic, me ka wai kiʻekiʻe. ʻO ka hana nui o nā paipu palupalu palupalu ʻo ia ka hōʻiliʻili a hoʻokahe i ka wai ua, pale i ka hōʻiliʻili a me ka paʻa ʻana o ka wai, a hoʻemi i ka hōʻiliʻili ʻana o ka wai a me ka piʻi ʻana o ke kiʻekiʻe o ka wai. Hoʻohana maʻamau ia i nā ʻōnaehana hoʻoheheʻe wai ua, nā ʻōnaehana hoʻoheheʻe alanui, nā ʻōnaehana ʻāina, a me nā papahana ʻenehana ʻē aʻe.
Hoʻohana ʻia ka pā wai wai a me ka wai hoʻoheheʻe kūikawā kūikawā i hoʻopaʻa ʻia i loko o ka pahu pahu i hoʻokumu ʻia i ka concave convex shell membrane, hoʻomau, me kahi ākea ʻekolu a me kekahi kiʻekiʻe kākoʻo hiki ke kū i kahi kiʻekiʻe lōʻihi, ʻaʻole hiki ke hana i ka deformation. ʻO ka piko o ka pūpū e uhi ana i ka papa kānana geotextile, e hōʻoia i ka pale ʻole ʻana o ke kahawai wai ma muli o nā mea o waho, e like me nā ʻāpana a i ʻole ka hoʻopiha piha ʻana.
ʻO ka waihona wai a me ka papa hoʻoheheʻe wai i hana ʻia me ka polyethylene kiʻekiʻe (HDPE) a i ʻole polypropylene (PP), i hana ʻia e ka hoʻomehana ʻana, ke kaomi ʻana a me ka hana ʻana. He papa māmā ia e hiki ai ke hana i kahi auwai me kahi ʻoʻoleʻa kākoʻo ākea ʻekolu a hiki ke mālama i ka wai.