Putanga punga
Ko te punga o te punga ko te rakau e whakawhiti ana i nga hanganga, i te utahanga matawhenua ranei ki te toka pumau
Ko nga hanganga, kei roto ko te rakau, te moka wiri, te hono, te pereti, te aukati me te nati.Kua oti
whakamahia whānuitia i roto i te tunnling, maina, slope stabilization, tunneldisease maimoatanga me te tuanui tautoko
o nga mahi o raro.Mo te whenua wetekina(te paru, te kirikiri karekau me etahi atu.) He mea hanga te rakau punga tuwhera
ngongo tui me te kaha teitei.
Ko nga ahuatanga o te raka punga o te whenua tuwhera
• He pai rawa mo nga ahuatanga whenua uaua.
• He nui te reiti o te whakaurunga mai i te keri, te whakatakoto me te tarai ka taea te mahi i roto i te mahi kotahi.
• Ka whakakorehia e te punaha keri whaiaro te hiahia mo te poka poka.
• Ka taea te whakauru me te keri tukutahi me te weriweri.
• He ngawari te whakauru ki nga huarahi katoa, ki runga hoki.
• He pai mo te mahi i nga waahi iti, teitei me nga waahi uaua.
• Pūnaha pou grouting ngawari.• te piauau wera-toua mo te parenga waikura
Nga tono mo te Tunneling & Ground Engineering
• Te whiti irirangi
• Te whakapumautanga o te pari
• Te Whakanuia
• puranga werohanga moroiti
• Te whakapumau kanohi
• He punga tautoko rangitahi
• Te whakarite tauranga
• Te whao oneone
Whakaahuatanga Punga Punga Whaiaro-Drilling
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | |
| Taone o waho (mm) | 25 | 32 | 32 | 38 | 51 | 51 | 76 |
| Diane Roto (mm) | 14 | 19 | 16 | 19 | 36 | 33 | 52 |
| Rawa Uta Mutunga (kN) | 200 | 280 | 360 | 500 | 550 | 800 | 1600 |
| Raukaha Uta Tuku (kN) | 150 | 230 | 280 | 400 | 450 | 630 | 1200 |
| Te Kaha Tana, Rm (N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
| Kaha Tuku, Rp0.2 (N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
| Taumaha (Kg/m) | 2.3 | 3.2 | 3.6 | 5.5 | 6.5 | 8.0 | 16.0 |
| Koeke maitai | EN10083-1 (Rauhanga Hanganga Korowai) | ||||||
| Ka whakatauritea ki te waro maitai, ko te maitai o te hanganga koranu he nui te kaha anti-corrosion me te miihini teitei. | |||||||
Wā tuku: Hune-30-2022