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2014年2月22日,南水北调中线穿越黄河工程两条隧洞开始充水试验,将对穿黄工程隧洞结构的安全性能、衬砌受力和防渗、排水情况及混凝土质量等在充水状态下进行检验。穿黄工程位于河南省郑州市以西约30 km的孤柏嘴,于2005年9月27日开工建设,是南水北调中线工程中投资较大、施工难度最高、规模最大的穿越江河水利工程。两条隧洞内径为7 m,长为4 250 m,其中有3 450 m位于黄河河床下。穿黄工程的主要任务是
February 22, 2014, the South-to-North Water Diversion Middle Route through the Yellow River two tunnels began to fill the water test will be on the Yellow River tunnel project safety performance, lining and anti-seepage, drainage and concrete quality in the water-filled state test. The project Yellowstone, located in about 30 km west of Zhengzhou City, Henan Province, was started on September 27, 2005. It is the largest cross-river water conservancy project with large investment, highest construction difficulty and the largest scale in the mid-route of South-to-North Water Diversion Project. The two tunnels have an internal diameter of 7 m and a length of 4 250 m, of which 3 450 m are located under the Yellow River. The main task of wearing yellow project is