四川南大梁高速公路华蓥山特长隧道方案比选

Program Selection for Huayingshan Super-long Tunnel in Nanchong-Dazhou-Liangping Expressway

先通过纸上选线,找出路线走向范围内可能的隧道轴线方案,再经区域地质调绘抛弃无比选价值的方案,进而通过物探、深孔钻探等多种手段,从平、纵面指标、主要工程数量、煤层采空情况、洞身围岩级别、岩溶情况等多方面综合比选,推荐了地质条件好、实施难度和风险小的隧道K方案。

First through route selection on paper,find out possible tunnel axis programs within the route;then through regional geological investigation,get rid off the program without value;through physical exploration and deep drilling,based on comprehensive comparison of horizontal and vertical indicators,main engineering quantity,coal mined out condition,tunnel surrounding rock class and karst,it is recommended K tunnel program with good geological condition,smaller implementation difficulty and risk.