大坝爆破料填筑施工工艺研究——以阿尔塔什水利枢纽为例  

Study on filling construction technique of dam blasted material

作　　者：谭峰屹[1,2] 陈立博[1,2] 胡哲猛 张正勇[3] 包永侠 张芳军[3] 刘英标 

机构地区：[1]长江科学院,湖北武汉430015 [2]武汉长科监理公司,湖北武汉430015 [3]中国水利水电第五工程局有限公司,四川成都610065

出　　处：《人民长江》2016年第22期75-78,82,共5页Yangtze River

摘　　要：为验证设计提出的爆破填筑料标准合理性,研究其施工工艺并提出相应的施工参数,以阿尔塔什水利枢纽为例,在现场开展了碾压试验研究。研究结果表明:当洒水量从0增加至10%时,随着碾压遍数的增加,爆破填筑料的平均压实沉降量、孔隙率和干密度均有较大变化;当洒水量继续增加时,随着碾压遍数的增加,上述指标变化不大;洒水率的变化对爆破料含水率和颗分指标影响不大。在此基础上,提出了该工程爆破填筑料最优施工工艺及参数:进占法铺料,其厚度为80 cm,洒水量为5%或10%,32 t振动平碾碾压机械以2.8km/h的行车速度碾压10遍或8遍,进退错距法碾压,相邻碾迹的搭接宽度不小于碾宽的1/10。In order to verify the rationality of designed compaction standard of blasted material,taking Altash Hydropower Station as a case,we carried out corresponding rolling experiment in the field to obtain the construction parameters. The experimental results show that when the watering content increases from 0 to 10. 0%,the average compacted settlement,porosity and dry density of the blasted material are obviously influenced by the increase of compaction times. But when the watering content continues to increase,the above indexes have no obvious change with the increase of compaction times. Particularly,change of watering content has little influence on grain size composition and moisture content of blasted material. Based on the results,optimal construction technique and related parameters are put forward when the blasted material is used as the compacted material. The material is placed by the step-forward technique with placing thickness of 80. 0cm,and the watering content is 5. 0% or 10.0%,then it is compacted 10 times or 8 times according to different watering contents by the smooth drum vibratory roller of 32 ton load capacity at the velocity of 2. 8 km / h,and the lapped joint width is greater than 1 /10 vibration wheel＇s width.

关 键 词：爆破料 填筑施工 碾压试验 施工参数 

分 类 号：TV31[水利工程—水工结构工程]