本文基于PLAXIS软件对方案进行的有限元计算结果,针对老沪闵路给水管道穿越淀浦河采用的水平定向钻穿越技术方案进行分析。对于防汛墙和桩基,分析数据表明本工程水平定向钻穿越河流时对防汛墙的最大附加水平和竖向变形均小于2.0cm,确定该方案的影响满足对河道防汛墙的环境保护要求。 Based on the finite element calculation result of PLAXIS software, the paper analyzes the technical scheme of horizontal directional drilling crossing adopted by the old Humin Road water supply pipeline crossing the Dingpu River. For flood control wall and pile foundation, the analysis data show that the maximum additional horizontal and vertical deformation of the flood control wall when the horizontal directional drilling passes through the river is less than 2.0 cm. The impact of this scheme is confirmed to meet the environmental protection requirements for the flood control wall of the river.