为了进一步提升斜井的运输能力和满足施工通风的要求，将象山隧道原设计斜井断面做了进一步优化：将1、5#斜井原设计单车道加错车道断面变更为双车道断面；将2#斜井井身倾角优化为22°，斜长优化为507.98m；将3、4#斜井井身衬砌断面由三车道变更为四车道；5#斜井井位改移于线路前进方向右侧，与线路相交于YDK34+800里程处，与线路大里程方向夹角42°38′35″，综合坡度9.2%，斜长327.5m，并采用无轨运输双车道衬砌断面。优化后的隧道辅助坑道能够更加合理利用现场资源，加快施工进度，取得的经验值得在类似工程中推广。

 In order to further enhance the transportation capacity and meet the construction ventilation requirements of the inclined shafts of Xiangshan tunnel, the inclined shafts are optimized as follows: the crosssection of No. 1 and No.5 inclined shafs are optimized from 1 lane plus truckmeeting belts into 2 lanes; the gradient of No. 2 inclined shaft is optimized into 22 degree and the length of No. 2 inclined shaft is optimized into 507.98m; the crosssections of No. 3 and No. 4 inclined shafts are optimized from 3 lanes into 4 lanes; No. 5 inclined shaft is optimized to be located on the right side of the tunnel route and is connected to the tunnel route at YDK34+800 with an angle of 42°38′35″, with the gradient of No. 5 inclined shaft being optimized into 9.2%, the length being optimized into 327.5m and the crosssection being optimized into twintrack crosssection. Due to the optimization of these construction adits, the site resources are better utilized and the construction progress is improved. The experience gained in the project is worth to be promoted in similar projects.