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随着火力发电厂建设数量和规模日趋增大,粉煤灰贮放已成为电厂的一个突出问题。山谷灰场具有容积大、占地少、飞灰污染小的优点,但需要建造高坝才能获得足够的库容以满足贮灰年限和调节洪水的要求,一次建成高坝显然是不合理的。分期筑坝是将坝体分期建设,先建成初期坝,贮满灰后在沉积的粉煤灰上再建子坝,逐级加高至最终坝高。近年来,我院开展了粉煤灰坝(简称灰坝)的设计研究工作。现结合工程实例介绍如下一些研究成果。
With the increasing number and scale of thermal power plant construction, fly ash storage has become a prominent issue of power plants. However, it is obviously unreasonable to build a dam at a time because of the need to build a dam to obtain sufficient storage capacity to meet the requirements of the storage of ash and adjust the flood. Staged dam is the dam staged construction, first built into the initial dam, filled with ash in the deposition of fly ash on the construction of sub-dams, step by step increase to the final dam height. In recent years, our hospital has carried out the design and research work of fly ash dam (referred to as the ash dam). Now combined with the engineering examples to introduce the following research results.