Parizvino, nyika yangu iri kuita kupisa marara emumba, uye marara emarara ekutanga achadzikira zvishoma nezvishoma. Asi dhorobha rega rega rinoda kanenge kamwe chete pakurasira marara kwechimbichimbi nekupisira madota. Nekune rimwe divi, pari zvino kune akawanda emarara emarara akazadzwa uye anoda kuvharwa. Naizvozvo, mune ramangwana, geosynthetics ichava netarisiro huru yemusika mukuvharwa kwekuvharwa kwemarara emarara uye kuvharwa kwenguva pfupi kwe-in-service marara.
Iyo inonzi kuvhara kwekuvhara kunoreva kuti kana marara akaoma akazadzwa, chigadziro chekuvhara chigadziro chinoda kuvakwa pamusoro payo kudzivirira kupindira kwemvura inonaya uye gasi rinoputika, uye zvinomera zvinogona kudyarwa kuti zvisvibire uye zvidzorere. Kune marudzi matatu makuru ezvigadzirwa zve geosynthetic zvinoshandiswa muvharo yemunda: yakaderera density polyethylene (LDPE) geomembrane, bentonite isina mvura gumbeze uye composite drainage net. Pakati pavo, LDPE geomembrane ine ductility yakanaka, haisi nyore kubvamburwa, uye inogona kuita basa rakanaka mu-anti-seepage uye air-sealing. Iyo anti-seepage barriers zvimiro zve bentonite isina mvura gumbeze zvakare yakanaka kwazvo. Kana ichienzaniswa ne geomembrane, haizoguri zvachose mhute yemvura pasi pechifukidzo chekuvhara, iyo inobatsira zvikuru pakukura kwezvinomera.
Kuvharwa kwenguva pfupi kwe-in-service solid solid marara ndeyekuvhara nzvimbo dzemarara dzakafumurwa ne geosynthetics munzvimbo dzisina kuvharwa kwenguva pfupi kuti dzideredze kupinda kwemvura yekunaya uye mafashama egasi. Chivharo chenguva pfupi chinowanzoshandiswa mumapurojekiti ekurapa nzvimbo yekusvibisa kudzivirira magasi anokuvadza kuti asapukunyuke mumhepo. Mumazuva ekutanga, tarpaulins, mafirimu, nezvimwewo zvaiwanzoshandiswa kuvharwa kwenguva pfupi, asi matambudziko akadai seasina kunaka anti-seepage uye air-sealing effect uye kubvarura nyore kwewelds zvaiwanzoitika. Parizvino, nzvimbo dzekurasira ivhu dzine zvakakwirira uye zvakakwirira zvinodikanwa zvekuvharirwa marara. Mamwe marara anoshandisa 1mm gobvu HDPE geomembrane yekuvhara kwenguva pfupi. Mhedzisiro yekuvhara pasi iri nani.
Nguva yekutumira: Mar-03-2022