I roto i te hangarau kauhanga, he mea tino nui te pūnaha waikeri. Ko te kupenga waikeri hiato-toru-ahu he rauemi waikeri e whakamahia whānuitia ana i roto i te hangarau kauhanga. Nā, he aha ōna whakamahinga i roto i ngā kauhanga?
I. Ngā āhuatanga hangarau o te kupenga waikeri hiato-toru-ahu
Ko te kupenga waikeri hiato-toru-ahu he mea hanga mai i te matua mata kirihou-toru-ahu i hangaia mai i te polyethylene kiato-teitei (HDPE) me te geotextile uruhanga-rua-taha e piri ana. Ko tōna hanganga matua he awa waikeri i hangaia e ngā rara poutū me ngā rara tautoko-whakawhiti o runga me raro hei hanga i tētahi pūnaha tautoko pumau. Nō reira, e toru ngā painga hangarau nui:
1. Te kaha whakaheke wai pai: Ka taea e te urunga wai te eke ki te 2500m/rā, he rite ki te pānga whakaheke wai o te paparanga kirikiri matotoru 1-mita, ā, ka taea te whakaheke tere i te wai e turuturu ana i roto i te kauhanga.
2. Ātete pēhanga teitei: Ka taea e ia te tu atu i te kawenga pēhanga teitei o te 3000kPa mō te wā roa, ko te matotoru o te matua mata he 5-8mm, ā, ko te kaha kume he ≥36.5kN/m, e whakarite ana i te mahi pumau i raro i ngā āhuatanga whenua uaua.
3. Mahi tiaki whānui: He mahi ārai-tātari, uruhanga hau, me te whakapakari turanga, e hanga ana i tētahi pūnaha tiaki whakauru o te "tiaki-tātari-waikeri-tiaki".
II. E whā ngā horopaki tono matua i roto i te hangarau kauhanga
1. Paparanga waikeri i muri i te arai
Ka ngāwari te whakaputa i te pēhanga wai nā te kohikohinga o te wai whenua i muri i te arai o te kauhanga, ka puta te turuturu, tae atu ki te kino o te hanganga. Ka whakatakotoria te kupenga rerenga wai ā-toru-ahu i waenganui i te arai me te toka e karapoti ana hei hanga i tētahi awaawa rerenga wai roa hei ārahi i te turuturu o te maunga ki roto i te awaawa taha hei tukunga.
2. Pūnaha rerenga wai whakahurihuri
Ka ngāwari te āhua o te kōpiko hurihuri ki te hukapapa nā te nui o te wai e kohia ana. Ka whakamahia te kupenga waikeri hiato-toru-ahu me te paparanga kirikiri hei tere i te mimiti o te wai whenua. Ka taea e tōna hanganga-toru-ahu te aukati i te pikinga ake o te wai kapia me te ārai i te kino o te hukapapa hotoke.
3. Paparanga rerenga wai o te pakitara taha
I roto i tētahi kauhanga he ngoikore te toka e karapoti ana, ka ngāwari te turuturu o te wai i roto i te pakitara taha ki te whakararu i te hanganga tautoko. Hei paparanga rerenga wai pakitara taha, ka taea e te kupenga rerenga wai hiato-toru-ahu te whakaheke i te wai rerenga wai, engari ka whakawhāiti hoki i te rerekētanga o te toka e karapoti ana mā tōna kaha kume teitei. E whakaatu ana ngā raraunga whakamātautau he 40% teitei ake tōna kaha kutikuti i ērā o ngā rauemi tuku iho, ka taea ai te whakarite i te pumau o te pakitara taha.
4. Papa whakawhiti rerenga wai o te kauhanga
He ngāwari te hinga o te kuwaha kauhanga nā te urunga mai o te wai mata. Ka whakatakotoria te kupenga rerenga wai hiato-toru-ahu ki muri i te arai o te kuwaha kauhanga hei hanga i tētahi paparanga whakawhiti rerenga wai hei ārahi i te wai mata ki roto i te awaawa rerenga wai. Ka taea e tōna ātete ki te waikura te ātete ki te horo wai whenua waikawa, ā, ka whakarite kia pumau tonu mō te wā roa.
III. Ngā wāhi hanga me te whakahaere kounga
1. Te whakahaere i te ahunga whakatakotoranga: Me poutū te ahunga roa o te roera rauemi ki te tuaka o te kauhanga kia rite ai te awa rerenga wai ki te ahunga rere o te wai.
2. Te maimoatanga hononga: Whakamahia te hangarau whitiki, te hangarau whakarewa rānei hei whakatika, ko te roa o te taupatupatu he ≥15cm, ā, whakamahia ngā whao āhua-U, ngā whitiki polymer rānei hei hono i ia 0.3m.
3. Te tiaki i te whakakī anō: Me whakaoti te whakakī anō i roto i ngā hāora 48 i muri i te whakatakotoranga, ko te rahi mōrahi o te matūriki o te whakakī he ≤6cm, ā, me whakamahi he whakakī ā-ringa māmā hei karo i te kino ki te hanganga matua o te mata.
Wā tuku: Hurae-29-2025
