Ezimbonini lapho ukulinganiswa koketshezi kuhilela izimo ezimanzi noma ezigcwele inhlabathi—njengemisebenzi yezimayini ebhekene namanzi amdaka agcwele amaminerali kanye namasimu ezolimo aphatha ukugeleza kwamanzi athwala izinhlayiya zomhlabathi—amamitha okugeleza endabuko avame ukwehluleka ukuletha ukusebenza okuthembekile. Ukuvaleka, ukuguguleka, kanye nokufundwa okunganembile kuyizinkinga ezivamile, okuholela ekungasebenzi kahle kokusebenza, ukungalandeli imithetho, kanye nezingozi zemvelo. Amamitha okugeleza eziteshini ezivulekile, nokho, aklanyelwe ukunqoba lezi zinselele: ukwakheka kwawo kwenzelwe ukuphatha uketshezi olumanzi nolugcwele inhlabathi, okwenza kube yisisombululo esiphelele sokumba kanye nokuqapha ukugeleza kwamanzi ezolimo.
Okubalulekile kwamamitha okugeleza kwesiteshi esivulekile ukufaneleka kwezimo zoketshezi ezinzima yisimiso sawo sokulinganisa esingaphazamisi noma esiphansi. Ngokungafani namamitha epayipi avaliwe athembele ezinzwa zangaphakathi (ezingcoliswa kalula ukwakheka kwedaka) noma izingxenye zemishini (ezivame ukuguguleka ngenxa yezinhlayiya ezihuquzelayo), amamitha esiteshi esivulekile alinganisa ukugeleza emihubheni engacindezelwanga, evulekile (njengemisele, ama-flume, noma ama-weirs) esebenzisa izinzwa zangaphandle noma ezivezwe kancane. Ubuchwepheshe obuvamile buhlanganisa i-ultrasonic (ukulinganisa izinga lamanzi ngamaza omsindo), i-radar (ukusebenzisa amaza omsakazo ukuthola ukuphakama kobuso), kanye ne-laser (ukulandelela izinga eliqondile)—konke okugwema ukuxhumana ngqo nezingxenye ezigcwele idaka kakhulu zoketshezi. Lo mklamo uqeda izingozi zokuvaleka futhi unciphise ukuguguleka, ukuqinisekisa ukunemba okuqhubekayo ngisho nalapho uketshezi luqukethe amazinga aphezulu esihlabathi, udaka, noma udoti wamaminerali. Isibonelo, amamitha esiteshi esivulekile se-ultrasonic asebenzisa ama-transducer afakwe ngaphezu kobuso boketshezi, akhipha amaza agxuma emanzini ukuze abale izinga (futhi ngaleyo ndlela izinga lokugeleza ngosayizi wesiteshi olinganisiwe ngaphambilini)—azikho izingxenye ezicwiliswe oketshezini oluyimfucumfucu, azikho ingozi yokungcoliswa yinzwa.
Embonini yezimayini, lapho uketshezi olunezibi, olusindayo olufana nenhlabathi luwumphumela oqhubekayo wokusebenza (kusukela ekuhlanzweni kwetshe le-ore kuya ekuphathweni kwemisele), amamitha okugeleza kwemisele evulekile abhekana nezidingo ezibalulekile zokusebenza kanye nezemvelo. Amanzi angcolile okumba avame ukuba namazinga aphezulu ezinto eziqinile ezilengisiwe (njengezinhlawulo zensimbi noma uthuli lwamalahle), okungavimbela ngokushesha amamitha endabuko avaliwe ngokuvala izinzwa noma ukuguguleka izingxenye zangaphakathi. Amamitha emisele evulekile, ngokuphambene, ayachuma kule ndawo: izinzwa zawo zangaphandle zihlala zingenazo izindonga zetshe le-sediment, kanye nekhono lazo lokusingatha amazinga okugeleza aguquguqukayo (okuvamile ezimayini, lapho ukusetshenziswa kwamanzi kunyuka khona ngesikhathi sokucubungula itshe le-ore) kuqinisekisa ukuqapha okunembile kokukhishwa kwamanzi angcolile. Lokhu kunemba kubalulekile ekuhambisaneni nemithetho: izifunda eziningi zidinga ukuthi izimayini zibike ivolumu yamanzi angcolile kanye namazinga etshe le-sediment ukuvimbela ukungcoliswa kwemifula noma amanzi angaphansi komhlaba. Umsebenzi wokumba igolide eNtshonalanga Australia, isibonelo, ushintshele kumamitha emisele evulekile asekelwe ku-radar ukuze kuqashwe ukuphuma kwamanzi emiseleni. Amamitha awagcinanga nje ngokumelana noketshezi olunamafu kakhulu (olwaluvimbe amamitha omshini masonto onke) kodwa futhi anikeze idatha yesikhathi sangempela eyasiza imayini ukunciphisa ukukhishwa kwendle ngo-22% - ukugwema izinhlawulo ezibizayo nokuthuthukisa ukusebenza kwemvelo. Ngaphezu kwalokho, amamitha eziteshi ezivulekile kulula ukuwafaka emigodini yesikhashana kanye neziteshi ezivame ukusetshenziswa ekumbeni, okwenza kube lula ukuzivumelanisa nezimo kunezinhlelo zamapayipi avaliwe aqinile.
Ekuqapheni ukugeleza kwamanzi kwezolimo, amamitha okugeleza kwemisele evulekile adlala indima ebalulekile ekuphathweni kwamanzi okusimeme kanye nokuvikelwa kwemvelo. Ukugeleza kwamanzi kwezolimo—amanzi ageleza esuka emasimini ngemva kokunisela noma imvula—athwala amazinga aphezulu enhlabathi, umanyolo, kanye nezibulala-zinambuzane, okubeka izingozi emigwaqweni yamanzi eseduze (njengokukhukhuleka kwenhlabathi noma ukuguguleka komhlabathi). Amamitha endabuko ayalwa lapha: inhlabathi ivala izindawo zokungena, kanye nokugeleza okuguquguqukayo (kusukela emvula encane kuya emvuleni enkulu) kuholela ekufundweni okungalungile. Amamitha emisele evulekile, nokho, aklanyelwe ukusingatha lokhu kuguquguquka: angalinganisa kokubili ukugeleza okuphansi (isb., ukuvuza kwamanzi ngemva kokunisela) kanye nokugeleza kwamanzi aphezulu (isb., ukugeleza kwamanzi ngesiphepho) ngokunemba okufanayo, kanye nezinzwa zawo ezingaphazamisi ukumelana nokungcola okuvela ezinhlayiyeni zomhlabathi. Epulazini elikhulu lommbila e-Iowa, ukufaka amamitha emisele evulekile ye-ultrasonic emiseleni yokudonsa amanzi yasensimini kwavumela abalimi ukuthi balandelele ivolumu yokugeleza kwamanzi futhi babone izindawo ezinokuguguleka komhlabathi ngokweqile. Ngokulungisa amashejuli okunisela kanye nokwengeza izitshalo zokumboza ezindaweni ezigeleza amanzi amaningi, ipulazi lanciphisa ukulahlekelwa yinhlabathi ngo-30% futhi lathuthukisa ukusebenza kahle kokusetshenziswa kwamanzi—lanciphisa izindleko zokunisela ngo-15%. Emisebenzini yezolimo engaphansi kwemithethonqubo yezemvelo (njenge-US Clean Water Act), amamitha ahlinzeka ngemininingwane eqinisekisiwe ukufakazela ukuhambisana nemikhawulo yokugeleza kwamanzi.
Enye inzuzo ebalulekile yamamitha okugeleza kwesiteshi esivulekile kuzo zombili izimboni izidingo zawo zokulungisa eziphansi. Ezimayini, lapho imishini ivame ukutholakala ezindaweni ezikude, okunzima ukufinyelela kuzo, ukulungiswa kwamamitha njalo kuyabiza futhi kuthatha isikhathi. Amamitha esiteshi esivulekile, angenazo izingxenye ezihambayo ezicwiliswe emanzini, adinga ukuhlanzwa ngezikhathi ezithile kwezinzwa zangaphandle (okwenziwa kalula ngebhulashi) kanye nokulinganiswa konyaka—ukunciphisa izindleko zokulungisa ngamaphesenti angama-50 uma kuqhathaniswa namamitha endabuko. Kwezolimo, lapho amamitha evezwa khona emvelweni, imiklamo eqinile (njengezindawo ezivalekile ezingangenisi isimo sezulu nezinto ezingamelana nokugqwala) iqinisekisa ukusebenza okuthembekile emvuleni, ekushiseni, noma emakhazeni. Amamodeli amaningi afaka nezici ezihlakaniphile, njengokudluliswa kwedatha okude nge-IoT, okuvumela abaqhubi bezimayini noma abalimi ukuthi baqaphe amazinga okugeleza besuka endaweni ephakathi—ukonga isikhathi nokuthuthukisa ukubonakala kokusebenza.
Nakuba amamitha okugeleza eziteshini ezivulekile angaba nezindleko eziphezulu kusengaphambili kunamamitha ayisisekelo omshini, izinzuzo zawo zesikhathi eside zokumba kanye nokuqapha ukugeleza kwamanzi ezolimo zidlula kakhulu lokhu kutshalwa kwezimali. Ezimayini, izindleko zokulungisa ezincishisiwe, ukuthobela imithetho, kanye nokuvikelwa kwemvelo kuhumusha imbuyiselo ekutshalweni kwezimali zingakapheli iminyaka emi-2-3. Emapulazini, ukusebenza kahle kwamanzi okuthuthukisiwe, ukulahlekelwa yinhlabathi okuncishisiwe, kanye nezindleko zokunisela eziphansi kunikeza izinzuzo zezimali ezifanayo—kanye nenzuzo eyengeziwe yokuphathwa komhlaba okusimeme.
Njengoba izimayini nezolimo zibhekene nengcindezi ekhulayo yokunciphisa umthelela wemvelo nokusebenza kahle kakhulu, amamitha okugeleza eziteshini ezivulekile zamanzi angcolile/ane-sediment ephezulu abe ngamathuluzi abalulekile. Amandla abo okuhlanganisa ukuqina, ukunemba, kanye nokugcinwa okuncane kubenza bafaneleke ngokuphelele ezinseleleni ezihlukile zalezi zimboni. Kungakhathaliseki ukuthi ukuqapha amanzi angcolile okumba ukuze kuvikelwe imigwaqo yamanzi noma ukulandelela ukugeleza kwezolimo ukuze kulondolozwe inhlabathi namanzi, amamitha okugeleza eziteshini ezivulekile angaphezulu nje kwesisombululo sokulinganisa—angumshayeli oyinhloko wemisebenzi eqhubekayo. Kunoma yiliphi ibhizinisi elibhekene noketshezi olungcolile noma olugcwele i-sediment, la mamitha afakazela ukuthi izimo ezinzima akudingeki zisho ukusebenza okuphazamisekile.
Isikhathi sokuthunyelwe: Okthoba-20-2025