为保障泵站工程、挡土工程和泵站取水渠及出水渠安全稳定,针对南水北调东线一期工程中的刘老涧二站等泵站位于膨胀土地区,通过室内试验研究南水北调东线江苏段膨胀土分布地区的膨胀土膨胀性,提出适用于南水北调东线江苏段膨胀土填料和天然膨胀土地基的改良方法、改良膨胀土的施工方法和改良膨胀土的施工质量控制标准。 In order to ensure the safety and stability of pumping stations and drains in the pumping stations and retaining stations, aiming at the second station of Liu Laojian No.2 station in the first phase of the South-to-North Water Diversion Project, the pumping stations are located in the expansive soil area. Through laboratory tests, The expansive soil expansibility of expansive soils is presented. The improvement methods of expansive soils and natural expansive soils, the construction methods of expansive soils and the construction quality control standards of expansive soils are put forward.