为了满足小浪底工程进水塔充水平压、交通、观测和排水等要求，在塔群内分别设置了充水平压廊道、交通廊道和排水廊道。较详细地介绍了上述不同功能廊道在结构复杂的进水塔内的布置形式，并根据结构和施工要求，选取了现浇和预制两种形式。通过光弹试验成果、边值数值解法和三维有限元法对廊道应力进行了分析，为廊道结构配筋提供了可靠的依据。 In order to meet the requirements of the Xiaolangdi Project water inlet tower for filling pressure, traffic, observation and drainage, etc., charging and pressurizing pressure corridors, traffic corridors and drainage corridors were set up in the tower group respectively. The layout of the above-mentioned different corridors in the water intake tower with complex structure is introduced in detail. According to the structure and construction requirements, two forms of cast-in-situ and prefabricated are selected. Through the results of photoelastic test, numerical solution of boundary value and three-dimensional finite element method, the stress of corridor is analyzed, which provides a reliable basis for corridor reinforcement.