一、前言随着四化建设的发展,燃煤电厂无论数量上或装机容量上都在不断增加和扩大,其相应的排灰量亦日益加大。据统计,1982年全国燃煤电厂年燃煤量1.2亿吨,相应排灰量0.37亿吨。按此排灰比例,预测2000年,年燃煤量达3亿吨时,其相应排灰量可近1亿吨。如此,就地加高灰坝,扩大贮灰场容量,延长贮灰场使用年限,早已成为电力建设中一比较突出的问题。贮灰场容量扩大,几年来我国多采用于初期坝上加筑子坝,实施“就地取材”“分 I. INTRODUCTION With the development of the four modernizations, coal-fired power plants are increasing in number and installed capacity, and the corresponding emission of ash is also increasing. According to statistics, in 1982, the annual coal-fired power plant in China consumed 120 million tons of coal and the corresponding ash discharge was 37 million tons. According to the ratio of ash discharge, it is predicted that in 2000, when the amount of coal burned reaches 300 million tons, the corresponding ash output will be nearly 100 million tons. In this way, increasing ash dam in situ, expanding the capacity of ash storage yard, and prolonging the service life of the ash yard have long become a prominent issue in power construction. Ash capacity expansion, in recent years, China more than used in the initial dams plus building dams, the implementation of “local materials” "points