公路2車道隧道施工組織設計.doc
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兩隧道均為上、下行分離的雙洞單向行駛2車道隧道。元墩1號隧道上行隧道里程為K0+875~K1+175，長300m，為3.685%上坡；下行隧道里程K0+853~K1+160，長307m，為3.800%上坡。元墩2號隧道上行隧道里程為K1+267~K1+730，長463m，為3.681%下坡；下行隧道里程為K1+240~K1+593，長353m，為2.689%下坡。
兩隧道設計凈寬9.75m，凈高5.0m。Ⅱ類圍巖最大開挖寬度12.44m，最大開挖高度9.88m。隧道采用錨噴砼做初期支護，復合式襯砌。
Two tunnels are on the two-hole one-way downlink traffic separated 2-lane tunnel. Yuen Tun uplink Tunnel 1 Tunnel mileage K0 +875 ~ K1 +175, length 300m, uphill to 3.685%; downstream tunnel length K0 +853 ~ K1 +160, length 307m, uphill to 3.800 percent. Yuen Tun tunnel 2 miles up the tunnel for the K1 +267 ~ K1 +730, length 463m, was 3.681% downhill; down the tunnel mileage K1 +240 ~ K1 +593, length 353m, to 2.689 percent downhill.
Net width two tunnel design 9.75m, net height of 5.0m. Maximum width of rock excavation Class Ⅱ 12.44m, maximum digging height 9.88m. Tunnel shotcrete initial support to do concrete, composite lining.