目前,河南黄河堤防高程已基本达到防御花园口流量22000米~3/秒的设计标准。但由于临黄大堤多是在历史遗留下来的旧堤基础上逐步加修的,有的还是在过去民埝上加高培厚多次才成,而原来的堤防质量就差,加上人为破坏,使堤身内存有松土、洞穴、裂缝等隐患。 At present, the embankment elevation of the Yellow River in Henan Province has basically reached the design standard of defensive Huayuankou flow of 22,000 meters ~ 3 / second. However, since the Yellow River embankment is mostly built on the basis of the old embankments left over by history, some have even raised their thicknesses on many occasions in the past and the quality of the existing embankments has been poor. Combined with man-made damage, Embankment there are loose soil, caves, cracks and other hidden dangers.