关于细石混凝土砌石拱坝问题的讨论

多年的实践表明砌石拱坝具有施工简单、不需要复杂的温控措施、适合当地群众修建等优点,是一种比较经济的坝型,但施工速度慢、耐久性差,已经不适应现在经济发展的需要。为使砌石拱坝具有竞争力,在继续保持其传统的优势同时,采用细石混凝土作为胶凝材料、减化坝体结构、采用自身防渗、适当降低对埋石率的要求、加大粉煤灰的掺量、简化施工工艺、加快施工进度、提高耐久性等是比较好的途径。

Discuss about Problem of Masonry Arch Dam Using Fine-stone Concrete

The practices of many years have made known that masonry arch dam has many advantages such as construction simple, no need complex measure of temperature control, fitting local people constructing, low cost and etc. But the dam type do not fit the requirement of modern economic development because its construction speed is low and it can not last long. In order to make masonry arch dam have competition, besides to keep traditional advantages , we should take better measures such as adopting fine - stone concrete as coagulation materials, simplifying dam body structure, adopting self anti-seepage measure, properly lowering ratio of embedding stone, increasing fly ash content, simplifying construction process, quickening construction speed, improving its durability and etc.