江垭RCC大坝施工概述

江垭水库大坝是辽宁省水利水电工程局近年来承建的第二座大型碾压混凝土坝，最大坝高128m，碾压混凝土总量114万m~3，占坝体总方量的83．8％．大坝采用全断面碾压混凝土，上游面二级配碾压混凝土防渗，溢流坝段布置中孔和表孔，结构复杂．大坝处于南方暖湿多雨地区，是狭谷中的工程．大坝施工涉及风、水、电、施工道路布置、附属企业布置、坝基开挖、坝体混凝土浇筑、基础处理以及金属结构制安等各个方面，均根据实际情况作了合理的安排．施工受到多种不利因素的影响，精心的施工组织，大量精良装备和人员的投入，维持了施工的高速度．

Brief Account of Jiangya RCC Dam Construction

Jiangya Dam, With the maximum height of 128m and roller-compacted concrete volume of 1 140 000m~3 accounting for 83. 8% of the total, is the second heavy-duty roller compacted concrete dam built by Bureau of Water Conservancy and Hydroelectric Power Construction of Liaoning Province in recent Years.Roller compacted concrete is used in full section, and that with maximum aggregate size of 40mm in the upstream face will be the ma jor water-tight body Medium level outlets and surface openings are located in the spillway section, thereby making it structurally complicated. The dam, a project between gorges, is situated in the warm, damp and rainy area in the southen part of china. The dam construction consists of air, water and power supplies, layout of construction roads and auxiliary enterprises, foundation excavation, dam concreting,foundation treatment, fabrication and installation of metal1ic structures and other aspects, and suitable arrangement is made according to the actural conditions. In spite of the influence of unfavorable factors, meticulous construction organization and employment of large quantities of advanced equipment and personnel ensure a high construction speed.