新二郎山隧道选址与方案论证

二郎山隧道长13．4km,是雅安至康定高速公路的控制性工程之一,隧址区极其复杂的地形条件、地质条件和极其敏感的环境条件,严重制约路线走廊选线。通过对隧址区地形、地质、环境进行综合分析研究,提出二郎山隧道K线和F线2个走廊方案进行比选,结合洞外工程,从工程规模、抗灾减灾、运营节能、实施难度等多方面论证,最终推荐工程规模较小、抗灾能力强、行车安全性较高及利于洞外互通布设的F线方案。

Argumentation of Site Selection and Schemes for New Erlangshan Tunnel

The Erlangshan Tunnel is 13 . 4 km long and one of control projects on Ya ’ an-Kangding Expressway, while extremely complicated topographic conditions and geological conditions and extremely sensitive environmental conditions in tunnel site area seriously restrain the schemes for route corridor. Based on comprehensive analysis and study of topography, geology and environment in tunnel site area, this paper proposes two corridor schemes of line K and line F of the Erlangshan Tunnel. On the basis of argumentation for comparison and selection of the Erlangshan Tunnel and in combination with outside tunnel project, the paper conducts argumentation of comprehensive comparison and selection for two corridor schemes from multiple aspects including project scale, disaster resistance and alleviation, energy saving in operation and implementation difficulty, etc. , and finally recommends the line F scheme characterized by small project scale, strong disaster resistance capability, higher driving safety and favor of intercommunication layout outside the tunnel.