the inlet of eliminate energy in flood discharge tunnel from Houba to Oxygen Factory in Guiyang city is different to lay because of factors, such as landform and building.

• 摘要受地形及地表建筑物等因素的限制贵阳市后坝至氧气厂排洪隧洞进口消能工布置较为困难，经过多方案比较，设计采用进口竖井消能方式。