云茂高速绿色公路建设中的水资源保护技术探索

Study on Water Resources Protection Technology of Yunfu-Maoming Green Highway Construction

为了更好落实绿色公路建设理念,秉持节约优先、保护优先的建设思路,在云茂高速公路建设初期梳理重要水资源敏感区和水资源消耗点,分析每个工程点的特性,采取专项保护措施。规划阶段路线跨越二级水源保护区,一旦发生污染泄漏会影响沿线居民用水,项目采取生态环保选线技术,对路线进行调整,规避水源保护区,从根本上杜绝污染出现;梁体养生阶段用水量大,在梁场建设初期,预埋喷淋管网,通过软件控制养生时间,节约用水的同时减少人工投入;在隧道口设置蓄水池,隧道渗水用于施工降尘,减少水土流失;桩基成孔使用装配式泥浆池;桥梁跨越自然水体段,实施路面径流收集系统,对初期径流和污染物进行收集,避免污染自然水体;在服务区实施速分生化污水处理技术,对污水进行处理。

In order to better implement the concept of green highway construction,uphold the construction idea of saving priority and protection first,we sort out the important water sensitive areas and water consumption points,analyzed the characteristics of each project point,and adopted special protection measures in the initial stage of Yunfu-Maoming expressway construction.Since the route in the planning stage crosses the secondary water source protection zone,once pollution leakage occurs,it will affect the water consumption of residents along the line.The project adopts ecological and environmental protection route selection technology to adjust the route to avoid the water source protection zone and fundamentally prevent pollution.Due to the large water consumption in the curing stage of beam body,in the initial stage of beam field construction,the sprinkler pipe network is embedded,and the curing time is controlled through software,which saved water while reducing labor input.A reservoir is set up at the tunnel entrance,and the tunnel seepage is used to reduce dust during construction and reduce water and soil loss.The pile foundation is formed with a prefabricated mud pool.When the bridge crosses the natural water body,the pavement runoff collection system is implemented to collect the initial runoff and pollutants to avoid polluting the natural water.In the service area,the fast separation biochemical sewage treatment technology is implemented to treat the sewage.