Itanura rya tunnel nka bumwe mu buhanga bugezweho mu murima wo kubumba amatafari, bityo, niba ushaka kubaka uruganda rwamatafari, rwose ni amahitamo meza.
Ariko, nigute wakoresha itanura rya tunnel kugirango ucane amatafari?
Tuzaguha ibisobanuro birambuye.
Itanura rya tunnel ririmo itanura ryumye hamwe nitanura.
Ubwa mbere, Nyuma yimashini ishyiraho amatafari yimodoka yashizeho amatafari, imodoka ya klin yohereza amatafari kumatara yumye, kugirango yumishe amatafari.Kuma ubushyuhe bw'itanura ni 100 ℃.Kandi hari chimney kumatanura yumye, ikoreshwa mugukuramo ubuhehere mumatara yumye.
Icya kabiri, amatafari nyuma yo gukama, koresha inzira imwe, koresha imodoka ya klin ohereza amatafari kumuriro.
Itanura ryo gucana ririmo ibyiciro 4.
Icyiciro cya mbere: icyiciro cyo kubanza.
Icyiciro cya kabiri: icyiciro cyo kurasa.
Icyiciro cya gatatu: icyiciro cyo kubika ubushyuhe.
Icyiciro cya kane: icyiciro cyo gukonjesha.
Noneho, niba ushaka kubaka itanura ya tunnel, turashobora gutanga ibipimo byumwuga byumwuga.
Itara rya tunnel ibipimo fatizo:
| Mugari mu itanura (m) | Uburebure bw'itanura (m) | Ubushobozi bwa buri munsi (pcs) |
| 3.00-4.00 | 1.2-2.0 | 70.000 |
| 4.01-5.00 | 1.2-2.0 | , 000 100.000 |
| 5.01-7.00 | 1.2-2.0 | ≥150.000 |
| ＞ 7.00 | 1.2-2.0 | , 000 200.000 |
Igihe cyo kohereza: Kanama-23-2021