小浪底水库平压管道冲淤及闸门前冲沙的措施

Measures for sludge washout in the equalizing pipe and sand-flushing before gates in the Xiaolangdi Reservoir

黄河乃世界上著名的多泥沙河流，在黄河上修建水利水电工程，首先碰到的便是泥沙问题。因高速水流挟带泥沙会对建筑物产生磨蚀，泥沙淤积又会对工程安全造成威胁。为此，小浪底水库工程采用事故门止水布置在闸门上游侧，廊道充水平压等措施解决泄洪洞群闸门前泥沙淤积问题。并增设了一套冲沙系统，以解决泥沙淤积的问题。这是一次新的尝试和探索。

Yellow River is known as a sediment -Laden river in the world. first problem encountered in the constrution of hydropower projects in the river will be sediment. The sediment carried by high-Velocity flow will corrode the structures and the deposit of sediment will threaten the safety of the project. For this reason, measures of installing the sealing material in the upstream side of the gate and filling water to equalize the pressure in the gallery were taken to solve the sediment deposit before the gates of flood-releasing tunnels. And a set of sand-flushing system was installed to prevent the sediment deposit. It is a new try to find out the solution of sediment deposit.