摘要
云南观音岩水电站大坝为黏土心墙堆石坝,为了检验设计合同提供的料场土料是否满足设计要求,进行了土料试验。主要试验内容包括:土料密度、天然含水率、最大干密度、液限指数、塑性指数、颗粒组成、击实度以及碾压工艺等。试验结果表明,该料场土料在铺厚为25 cm和30 cm时,分别碾压8和10遍,碾压效果俱能满足设计要求。综合考虑,推荐采用装载机碾压,碾压行进速度不大于2 km/h,铺料厚度为30 cm。
The dam of Guanyinyan Hydropower Station in Yunnan Province is a rockfill one with clay core. To check whether the quality of soil source in the material field according to the contract meets the requirement, the test study on soil material was carried out. The main test contents included the soil density, natural water content, the maximum dry density, liquid limit index, plasticity index, granular composition, compaction degree and rolling compaction technology etc. The results show that the roiling effect of 8 and 10 - time rolling compaction for the spreading soil material with the thickness of 25 em and 30 cm can meet the de- sign demand. By comprehensive consideration, the loader was recommended for rolling compaction with the rolling speed less than 2 km/h and soil spread thickness of 30 cm.
出处
《人民长江》
北大核心
2015年第20期80-83,共4页
Yangtze River
关键词
接触性黏土料
碾压
试验
观音岩水电站
clay material
rolling compaction
test
Guanyinyan Hydropower Station
