捞刀河穿跨越方案的比选

The Determination of Pipeline Crossing Scheme in Laodaohe River of ZHongxian-Wuhan Gas Transmission Pipeline

长输管道的大型河流穿跨越方案的确定受地质条件、水文条件、地层情况、周围环境、防洪等诸多因素的影响。结合捞刀河水文地质特点,对桁架梁跨越、顶管、钻爆法隧道穿越等穿跨越方式的施工方案和施工措施进行了比较分析,通过优化选择,确定采用钻爆法隧道方案。

The determination of pipeline crossing scheme in large-scale rivers is influenced by geological conditions, hydrologic conditions,formation,environment and flood. Take the hydrologic and geological characteristics of Laodaohe River in Hunan Province into account,some crossing schemes such as truss overhead crossing,push bench process and drilling & exloding tunelling method are analyzed and compared. On the basis of optimization,the drilling & exploding tunnelling scheme is available.