Hiki i ka pūnaewele hoʻokahe wai ʻekolu-dimensional ke pale aku i ka siltation a me ka blockaction?

I loko o ka ʻenekinia, he mea nui loa ka pilikia o ka silting. ʻO ka pūnaewele hoʻokahe wai hui ʻekolu-dimensional He mea hoʻohana maʻamau ia i nā papahana nui. No laila, hiki iā ia ke pale aku i ka siltation a me ka blockaction?

1. Hana hou ʻana o ke kūkulu ʻana

ʻO ka pūnaewele hoʻokahe wai ʻekolu-dimensional Ua haku ʻia me ka geotextile ʻelua ʻaoʻao a me ke kumu geotextile ʻekolu-dimensional. Hana ʻia ke kumu mesh me ka polyethylene density kiʻekiʻe (HDPE) Hoʻokumu ke kaʻina hana hoʻoheheʻe ʻekolu-dimensional i kahi pūnaewele iwi ʻaoʻao criss-crossing, a ʻike ʻia kona ʻano kū hoʻokahi i nā ʻano ʻelua aʻe:

1, ʻōnaehana pore gradient: ʻo ka mamao o ka iwi ʻaoʻao kū pololei o ka ʻupena mesh he 10-20 mm, ʻo ka iwi ʻaoʻao luna a me ka iwi ʻaoʻao lalo e hana i kahi kahawai hoʻololi ʻekolu-dimensional, kahi i kūlike me ka hoʻolālā gradient aperture o ka geotextile (papa luna 200 μm, pae haʻahaʻa 150 μm), ʻo ka nui o ka ʻāpana interceptable ʻoi aku ma mua o 0.3 mm o nā mea particulate, ʻo Real Now "coarse filtration-fine filtration" graded filtration.

2, Hoʻolālā Anti-embedding: ʻo ka mānoanoa o ka iwi ʻaoʻao mesh core a hiki i ka 4-8 mm, Ma 2000 kPa ʻOi aku ma mua o 90% o ka mānoanoa mua hiki ke mālama ʻia ma lalo o ke kaumaha, i mea e pale aku ai i ka hoʻokomo ʻia ʻana o ka geotextile i loko o ka mesh ma muli o ke kaomi kūloko. Wahi a ka ʻikepili ʻenekinia o kahi kahua landfill, ma hope o 5 mau makahiki o ka hoʻohana ʻana, ʻo ka papa hoʻokahe e hoʻohana ana i kēia mea e alakaʻi i ka wai ʻO ka helu attenuation rate he 8% wale nō, ʻoi aku ka haʻahaʻa ma mua o 35% o ka papa gravel kuʻuna.

2. Nā waiwai mea

1, Paʻa Kemika: HDPE Kūpaʻa ka ʻiʻo mesh i ka pala waikawa a me ka alkali. I ka pH I loko o kahi ʻano waikawa nāwaliwali a me ke kumu nāwaliwali me ka waiwai o 4-10, ʻoi aku ka nui o ka paʻa ʻana o kona ʻano molekala ma mua o 95%. ʻO ka geotextile polyester filament i hui pū ʻia Hiki i ka uhi pale UV ke kū i ka ʻelemakule o nā mea i hoʻokumu ʻia e ka radiation UV.

2, ʻano hana hoʻomaʻemaʻe ponoʻī: ka paʻakikī o ka ʻili o ka mesh core Ra Value i kāohi ʻia ma 3.2-6.3 μm I loko o ka laulā, ʻaʻole hiki ke hōʻoia wale i ka pono o ka hoʻokahe ʻana, akā pale aku hoʻi i ka hoʻopili ʻana o ka biofilm i hoʻokumu ʻia e ka laumania nui.

3. Hana ʻenekinia

1, Hoʻohana ʻāina: Ma kahi ʻāina me ka hiki ke hana i kēlā me kēia lā he 2,000 tons, ʻo ka pūnaewele hoʻokahe wai ʻekolu-dimensional a me ka HDPE The membrane e hana i kahi ʻōnaehana anti-seepage composite. Hiki i kona ʻekolu-dimensional mesh core ke kū i ka 1500 m³ i kēlā me kēia lā. ʻO ka ukana hopena o ka leachate, i hui pū ʻia me ka hana backstop o ka geotextile, hiki ke hoʻokō i ka percolation. Hoʻokuʻu ʻia ka wai i hoʻokahi ʻaoʻao, hiki ke pale i ka sludge mai ke kahe ʻana. Ma hope o 3 mau makahiki o ka hana, ʻo ka waiwai hāʻule o ke kaomi o ka laminate hoʻokahe wai he 0.05 MPa wale nō, Ma lalo loa o ka palena hoʻolālā o 0.2 MPa.

2, Noi ʻenekinia alanui: Ma ke alaloa ma kahi ʻāina lepo hau ma ka ʻākau o Kina, hiki ke hoʻohana ʻia ma ke ʻano he papa hoʻokahe wai subgrade, hiki ke hoʻemi i ka pae wai honua ma 1.2% ma ke ālai ʻana i ka piʻi ʻana o ka wai capillary m。 ʻO ke kūpaʻa ʻaoʻao o kona ʻiwi mesh he 120 kN/m， Hiki iā ia ke kaupalena i ka neʻe ʻana o ka papa kumu aggregate a hoʻemi i ka hanana o nā māwae reflective. Hōʻike ka nānā ʻana ua hoʻemi ʻia ka nui o nā ʻāpana alanui e hoʻohana ana i kēia ʻenehana ma 67% i hoʻohālikelike ʻia me nā maʻi subgrade kuʻuna, a ua hoʻolōʻihi ʻia ke ola lawelawe i ʻoi aku ma mua o 20 mau makahiki.

3, ka noi ʻenekinia Tunnel: Ma loko o kahi tunnel kaʻaahi e hele ana ma waena o ka stratum waiwai wai, hoʻohana pū ʻia kahi pūnaewele hoʻokahe wai ʻekolu-dimensional a me ka pale grouting e hana i kahi ʻōnaehana wai ʻole o ka "hoʻohui ʻana i ka hoʻokahe wai a me ka pale ʻana". Loaʻa i kona kikowaena kahi conductivity hydraulic o 2.5 × 10⁻³m/s， ʻOi aku ka maʻamau o ka papa hoʻokahe wai Hoʻomaikaʻi i 3 mau manawa, e hui pū me ka lole geotechnical Hiki i ka hana kānana ke hōʻemi i ka pilikia o ka clogging o ka ʻōnaehana hoʻokahe wai tunnel ma 90%.

4. Hoʻolālā mālama

1, ka nānā ʻana i ka Pūnaewele o nā Mea: Ua hoʻokomo ʻia nā mea ʻike fiber optical i loko o ka pūnaewele hoʻokahe wai e nānā i nā palena e like me ka conductivity hydraulic, ke kaumaha a me ke kaumaha i ka manawa maoli.

2. Hoʻōla ʻana i ka wai kaomi kiʻekiʻe: nā wahi i ālai ʻia ma kahi kūloko, e hoʻohana i ka wai kaomi kiʻekiʻe 20-30 MPa no ka ʻeli ʻana i ke kuhikuhi. Hiki i ke ʻano o ka iwi ʻaoʻao o ka ʻupena mesh ke hoʻomanawanui i ke kaomi me ka ʻole o ka deformation, a ʻo ka nui o ka hoʻōla ʻana o ka conductivity hydraulic ma hope o ka hoʻōla ʻana ma mua o 95%.