Ukadaulo Wa Ventilation for High Altitude Distance Tunnel Construction

1. Guanjiao Tunnel Project mwachidule

Guanjiao Tunnel ili ku Tianjun County, Qinghai Province.Ndi ntchito yolamulira ya xining -GolideNjira yowonjezera ya Qinghai-Tibet Railway.Msewuwu ndi wa 32.6km kutalika (kutalika kwake ndi 3380m, ndipo mtunda wopita kunja ndi 3324m), ndipo ndi ngalande ziwiri zowongoka zomwe zimatalikirana ndi mizere ya 40m.Kutentha kwapakati pachaka m'derali ndi -0.5 ℃, kutentha kochepa kwambiri ndi -35.8 ℃, kutentha kwa mwezi wozizira kwambiri ndi -13.4 ℃, makulidwe a chipale chofewa ndi 21cm, ndipo kuya kwake kozizira kwambiri ndi 299cm.Dera la ngalandeyo ndi alpine ndi hypoxic, kuthamanga kwa mumlengalenga ndi 60% -70% yokha ya kuthamanga kwamlengalenga, mpweya wa mpweya wa mpweya umachepetsedwa ndi 40%, ndipo mphamvu ya makina ndi ogwira ntchito imachepetsedwa kwambiri.Msewuwo umapangidwa ndi kubowola ndi kuphulitsa, ndipo ma shaft 10 opanda trackless amagwiritsidwa ntchito kuti athandizire kupanga ngalande yayikulu, ndiye kuti, ma shaft atatu amayikidwa mumsewu wa mzere I ndipo ma shaft 7 amayikidwa mumsewu. wa mzere II.

Malinga ndi mapangidwe a bungwe lomangamanga, dongosolo la ntchito yolowera ngalande ndi kutuluka ndi malo ogwirira ntchito a shaft akusonyezedwa mu Table 1. Poganizira za kusintha ndi kusintha kwa zomangamanga zenizeni, malo ogwirira ntchito a shaft ali ndi zofunikira zomanga panthawi imodzi yolowera ndi kutulukira kwa mzere I ndi mzere II.Kutalika kwa mpweya wabwino wa mutu umodzi kuyenera kukhala 5000m, ndipo kutalika kwa malo ogwirira ntchito kuyenera kukhala pafupifupi 3600m.

Zipitilizidwa…