Ntchito yomanga malo otayira zinyalala a municipalities ya Kunming
Dzina la polojekiti: Ntchito yomanga malo otayira zinyalala a municipalities ya Kunming
Zogulitsa: HDPE Geomembrane, Geotextile, Geosynthetic Clay Liner ndi Three-Dimensional Composite Drainage Network
Mkhalidwe wa polojekiti:
Mu 2023, boma la Kunming, m'chigawo cha Yunnan, lapeza kuti malo otayira zinyalala ndi osakwanira, zomwe zimapangitsa kuti anthu asamathe kuthana ndi zinyalala za m'deralo nthawi yomweyo komanso kuti ndalama zambiri zotayira zinyalala zikhale zokwera. Poyankha vutoli, boma la Kunming lapereka mapulani atatu okonzanso: Kukonza malo otayira zinyalala, njira zina zotayira zinyalala za m'nyumba, komanso kumanga malo otenthera zinyalala za m'nyumba. Onetsetsani kuti kuchuluka kwa zinyalala zolimba za m'mizinda m'maboma ndi m'maboma kudzakhalabe 100% pakati pa 2022-2023. Boma likufuna kumaliza ntchito yotayira zinyalala ku Kunming yokhala ndi malo osungira zinyalala okwana 4.4848 miliyoni pofika pa Disembala 31, 2023.
Ndondomeko yomanga:
Geomembrane, monga chinthu choteteza chilengedwe chomwe sichilowa madzi, imakhala ndi mphamvu yolimba komanso yosinthasintha. Ngati maziko okhala ndi kusintha kwakukulu agwiritsidwa ntchito ngati maziko a kapangidwe kosasunthika madzi, kugwiritsa ntchito geomembrane kumatha kusintha bwino kuti maziko asinthe. Nthawi yomweyo, kumanga geomembrane ndikosavuta, zofunikira pakugwiritsa ntchito zida sizikhala zazikulu, kulemera kwake ndi kopepuka, ndipo ndikosavuta kuigwira ndikuisunga kuposa zipangizo zachikhalidwe zomwe sizilowa madzi. Kumanga geomembrane ndikosavuta ndipo nthawi yomanga ndi yochepa. Nthawi yomweyo, kuchokera pamalingaliro azachuma, ndalama za geomembrane ndi zochepa, mtengo wonse ndi wotsika, makamaka poyerekeza ndi njira yachikhalidwe yopewera kutuluka kwa madzi, zabwino zachuma ndizodziwikiratu.
Ma Geotextile amagwiritsidwa ntchito mogwirizana ndi mapulojekiti otayira zinyalala ndipo amalowetsedwa m'nthaka kuti apereke kukhazikika kwa nthaka. Gawo la geotextile limalowa madzi zomwe zimathandiza madzi kuyandama momasuka kudzera mu gawo la nthaka popanda kuwononga nthaka. Geotextile ingagwiritsidwenso ntchito kulekanitsa nthaka ndikulimbitsa nthaka ngati maziko a polojekiti ya landill. Ma Geotextile angagwiritsidwe ntchito pa ntchito zosiyanasiyana chifukwa cha mphamvu zake komanso momwe amatulutsira madzi. Polyester (PET) Filament Nonwoven Geotextile ndi mtundu wa zinthu zolowetsedwa madzi zomwe zingagwiritsidwe ntchito nthawi yayitali kulekanitsa, kusefa, kulimbitsa, kuteteza, kusunga kapena kutulutsa madzi m'nthaka.
Geosynthetic Clay Liner (GCL) imapangidwa ndi zigawo zitatu, zigawo zapamwamba ndi zapansi motsatana ndi geotextiles, makamaka imagwira ntchito yoteteza komanso yolimbitsa, kotero kuti imakhala ndi mphamvu yoti ing'ambe komanso mphamvu yokoka; Pakati pali sodium bentonite granular layer, imakonzedwa kuchokera ku zinthu zachilengedwe zadothi, yokhala ndi mphamvu yotambasuka komanso mphamvu yoyamwa madzi ambiri, madzi ochepa akalowa m'madzi, makamaka imagwira ntchito yoletsa kutuluka kwa madzi. Imagwiritsidwa ntchito kwambiri mu uinjiniya wa zachilengedwe, malo osungiramo zinyalala pansi pa nthaka, kumanga zomangamanga pansi pa nthaka ndi mapulojekiti ena, kuthetsa kutseka, kudzipatula, mavuto oletsa kutuluka kwa madzi, zotsatira zabwino, kukana kuwonongeka kwakukulu. Ili ndi mphamvu yapadera yotseka mozungulira malo olowera, mabowo odzichiritsa okha, komanso kudzisoka pa malo olumikizirana.
Netiweki yotulutsira madzi ya miyeso itatu ndi mtundu watsopano wa zinthu zotulutsira madzi za geotextile. Ndi geoneti imodzi yokhala ndi miyeso itatu yopangidwa ndi ma geotextile awiri osalukidwa ndi singano. Netiweki yotulutsira madzi ya miyeso itatu imakhala ndi nthiti yowongoka yolimba ya miyeso itatu, komanso mng'alu wopendekera pamwamba ndi pansi. Ma geotextile omatira okhala ndi mbali ziwiri amapanga ntchito yonse ya "kusefa - kutulutsa madzi - mpweya - kuteteza", ndipo amatha kusintha mchenga ndi miyala yachikhalidwe. Dongosolo lake losamalira ma pore limatha kutulutsa madzi pansi pa nthaka mwachangu, kutseka madzi a capillary pansi pa katundu wambiri womangidwa, kusunga makulidwe ena ndikupereka mphamvu yabwino yoyendetsera madzi. Nthawi yomweyo, ingathenso kukhala gawo lodzipatula komanso lolimbitsa maziko.
