Umthelela Wezimayini Emvelweni
Ukumba, inqubo yokukhipha amaminerali ayigugu, izinsimbi, nezinye izinto ze-geological eMhlabeni, kube umkhuba obalulekile ekuthuthukisweni kwabantu nasekukhuleni komnotho. Naphezu kokubaluleka kwako, imisebenzi yokumba inomthelela omkhulu emvelweni, okubangela ukuphazamiseka okuhlukahlukene kwemvelo. Lokhu kucabangela kwemvelo kuya ngokuya kuthola ukunakwa njengoba umphakathi ufuna imikhuba yokumba eqhubekayo nenesibopho. Lesi sihloko sihlola izindlela ezahlukene zokumba ezithinta ngazo imvelo, kusukela ekuphazanyisweni kwemvelo kuya ekungcolisweni komhlaba nangale kwalokho.
1. Ukubhujiswa Kwezindawo Zokuhlala Nokulahlekelwa Yizinto Eziphilayo
Enye yemiphumela eyinhloko yezimayini kwezemvelo ukubhujiswa kwezindawo zokuhlala. Ukuze kukhishwe amaminerali, izindawo ezinkulu zomhlaba zivame ukusulwa, okuholela ekugawulweni kwamahlathi kanye nokulahlekelwa izindawo zokuhlala zezinhlobo eziningi. Ikakhulukazi ezindaweni eziphilayo ezifana namahlathi emvula, lokhu kungabangela ukulahlekelwa okukhulu kwezitshalo nezilwane.
Ukumba imigodi evulekile kanye nemigodi kuyonakalisa kakhulu, kususa izingqimba zomhlabathi kanye nezitshalo. Lokhu akugcini nje ngokuphazamisa imvelo ekhona kodwa futhi kwenza kube nzima ngezitshalo ukuthi ziphinde zikhule, okushiya umhlaba ungenalutho. Ukulahlekelwa yimpilo yezitshalo, nakho kuthinta izinhlobo zezilwane ezithembele kulezi zitshalo ukuze zithole ukudla nendawo yokuhlala, okuholela ekunciphiseni ukuhlukahluka kwezinto eziphilayo.
2. Ukuguguleka Nokuwohloka Kwenhlabathi
Ukususwa kwezitshalo nakho kuholela ekugugulekeni komhlabathi. Ngaphandle kwezimpande zezitshalo eziqinisa inhlabathi, imisebenzi yezimayini yenza umhlabathi uthambekele ekugugulekeni ngumoya namanzi. Lokhu kuguguleka komhlabathi kungabangela ukugcwala kwenhlabathi emifuleni nasemifudlaneni, kuthinte imvelo yasemanzini. Ngaphezu kwalokho, inhlabathi eveziwe ivame ukushiywa ingenazo izakhamzimba futhi inobuthi, okuvimbela ukutshalwa kabusha kwamahlathi nemisebenzi yezolimo.
3. Ukungcoliswa kwamanzi
Imisebenzi yokumba ivame ukudinga amanzi amaningi ukuze kucutshungulwe futhi kupholiswe imishini. Lokhu, kuhlangene nokuchayeka kwamaminerali emoyeni nasemanzini, kungaholela ekungcoleni okukhulu kwamanzi. Ukugeleza kwe-asidi yemayini (i-AMD) kuwumphumela omkhulu, okwenzeka lapho amaminerali e-sulfide avezwa yimayini esabela emoyeni nasemanzini ukuze akhiqize i-sulfuric acid. Le asidi ingakhipha izinsimbi ezinobuthi njenge-arsenic, i-lead, ne-mercury edwaleni elizungezile, kungcolise imifula eseduze namanzi angaphansi komhlaba.
Ukungcola kunemiphumela emibi kakhulu kokubili ezimpilweni zasemanzini nakubantu. Izinsimbi ezinobuthi zinganqwabelana ochungechungeni lokudla, okuholela ezinkingeni zempilo ezifana nomonakalo wezinzwa kanye nomdlavuza ohlukahlukene. Ngaphezu kwalokho, imisele yezimayini, izinto ezilahliwe ezishiywe ngemva kokukhishwa kwamaminerali abalulekile, ivame ukugcinwa emachibini amakhulu okugcina amanzi angaphula noma agcwale, okubangela ukungcola okwengeziwe.
4. Ukungcoliswa Komoya kanye Nokukhishwa Kwegesi Emkhathini
Imisebenzi yokumba ikhipha izinhlobo ezahlukene zokungcola emoyeni, okuhlanganisa izinto ezincane, i-sulfur dioxide, i-nitrogen oxides, kanye nezinsimbi ezisindayo. Uthuli oluvela ezindaweni zokumba lungaqukatha izinto eziyingozi njenge-silica, ezibangela izingozi zokuphefumula emiphakathini eseduze kanye nabasebenzi bezimayini.
Ngaphezu kwalokho, ukumbiwa kwemigodi kuwumthombo obalulekile wokukhishwa kwegesi ebamba ukushisa. Ukukhishwa nokucutshungulwa kwe-ore kudinga amandla, ngokuvamile avela kumafutha emvelo, okufaka isandla ekukhishweni kwe-carbon dioxide. Isibonelo, ukumbiwa kwamalahle kukhipha i-methane, igesi enamandla ebamba ukushisa, okwenza kube nzima kakhulu imiphumela yokushintsha kwesimo sezulu.
5. Imithelela Yezempilo Kubantu
Imithelela yezimayini kwezemvelo ifinyelela empilweni yabantu. Imiphakathi ehlala eduze kwezindawo zokumba ivame ukuba nezinkinga zokuphefumula ngenxa yokungcola okubangelwa umoya. Imithombo yamanzi engcolile ingaholela ezifweni zesisu kanye nezinye izinkinga zempilo. Ngaphezu kwalokho, abavukuzi basengozini yokuba sengozini yomsebenzi, okuhlanganisa ukuchayeka ezintweni ezinobuthi kanye nezingozi ezivela emishinini kanye nokuwa kwemayini.
6. Ukuguqulwa Kwendawo
Imisebenzi yokumba ingashintsha kakhulu indawo ebonakalayo. Ukumba kokususa iziqongo zezintaba, isibonelo, kuhilela ukuqhumisa isiqongo sentaba ukuze kufinyelelwe emaceleni amalahle angaphansi, okushintsha ngokuyisisekelo isimo sendawo kanye ne-hydrology yesifunda. Lezi zinguquko zingaphazamisa amaphethini emvelo okukhipha amanzi, okuholela ekwandeni kwezikhukhula kanye nokudilika komhlaba.
7. Imithelela Yezenhlalo Nezamasiko
Ngaphezu kwemiphumela yemvelo, ukumba izimayini kungaba nemiphumela ebalulekile kwezenhlalo nakwezamasiko. Imiphakathi yabantu bomdabu ivame ukubhekana nokufuduka kanye nokulahlekelwa yizindawo zokhokho ngenxa yamaphrojekthi okumba izimayini. Ukubhujiswa kwezindawo ezingcwele kanye nezindlela zokuphila zendabuko kungaholela ekuqhekekeni kwamasiko kanye nengxabano yezenhlalo.
Ukunciphisa kanye Nemikhuba Esimeme
Nakuba imiphumela yokumba ijulile futhi ifinyelela kude, kunezindlela zokunciphisa le miphumela. Imikhuba yokumba eqhubekayo igxile ekunciphiseni umonakalo wemvelo nokuqinisekisa ukubuyiselwa komhlaba ovunyiwe. Amanye amasu afaka:
– Ukuhlolwa Komthelela Wezemvelo (i-EIA): Ukwenza ama-EIA aphelele ngaphambi kokuqala amaphrojekthi okumba kungasiza ekuqondeni imiphumela engaba khona kanye nasekuhleleni amasu okunciphisa umonakalo.
– Ukubuyiselwa Komhlaba: Ngemva kokuba imisebenzi yezimayini isiqediwe, kufanele kwenziwe imizamo yokubuyisela umhlaba esimweni sawo semvelo. Lokhu kungabandakanya ukuphinda uvuse umhlaba, ukufaka esikhundleni senhlabathi engaphezulu, kanye nokutshala kabusha izitshalo zemvelo.
– Izinhlelo Zokuphatha Amanzi: Ukusebenzisa izinhlelo zokuphatha nokuvuselela amanzi asetshenziswa ezinqubweni zokumba kungasiza ekunciphiseni ukungcoliswa kwamanzi. Lokhu kuhlanganisa ubuchwepheshe bokwelapha ukugeleza kwamanzi emayini ene-asidi kanye nokuvimbela ukugeleza okunobuthi.
– Ukuphathwa Kwekhwalithi Yomoya: Ukusebenzisa ubuchwepheshe bokucindezela uthuli nokulawula ukukhishwa kwegesi okuvela emishinini kungasiza ekunciphiseni ukungcola komoya.
– Ukubandakanya Umphakathi: Ukubandakanya imiphakathi yendawo ezinqubweni zokwenza izinqumo nokuqinisekisa ukuthi iyazuza kumaphrojekthi okumba izimayini kungasiza ekunciphiseni imiphumela yezenhlalo namasiko.
Isiphetho
Ukumba izimayini kuyinkemba esika nhlangothi zombili, ebalulekile ekuthuthukisweni komnotho kodwa egcwele izinselele zemvelo nezenhlalo. Ukulinganisa izinzuzo zokukhishwa kwezimayini nesidingo sokuvikela imvelo kanye nempilo yabantu kudinga izindlela ezintsha kanye nokuzibophezela emikhubeni eqhubekayo. Ngokuqonda umthelela omkhulu wokumba izimayini emvelweni, ababambiqhaza bangasebenzela emisebenzini yokumba enesibopho nesimeme kakhulu enciphisa umonakalo futhi ikhuthaze impilo yezemvelo yesikhathi eside.
