巴塘水电站大坝堆石料的开采与质量控制  

Rock-fill Material Mining and Quality Control for the Dam of Batang Hydropower Project

作　　者：曾铁钢[1] ZENG Tiegang(Sinohydro Bureau 5 Co.,LTD.,Chengdu Sichuan 610066)

机构地区：[1]中国水利水电第五工程局有限公司,四川成都610066

出　　处：《四川水力发电》2024年第4期13-16,共4页Sichuan Hydropower

摘　　要：针对巴塘水电站大坝堆石料开采困难的具体情况,开展了坝料开采与质量控制研究。通过现场爆破开采试验得知,堆石料开采质量难以满足设计级配要求的主要原因:岩体本身破碎,加上裂隙切割、发育,在枢纽建筑物左岸边坡岩体条件下开采,难以通过调整爆破参数收集到满足设计要求的大坝堆石料。虽然巴塘水电站左岸枢纽建筑物的边坡开挖料料源中的细颗粒偏多、级配较差,但通过堆石料的室内试验和现场碾压试验可以研究其物理特性,最终选用了左岸枢纽建筑物的边坡开挖料,研究确定了堆石料开采爆破参数、堆石料填筑及碾压施工参数,保障了大坝堆石料的开采质量及填筑质量,节省了工程投资,亦避免了新增堆石料开采料场破坏金沙江上游青藏高原藏区脆弱的生态环境,取得了较好的经济效益和社会效益。In view of the difficulties in mining rock-fill materials for the dam of the Batang Hydropower Project,a study on the mining and quality control of the dam materials was carried out.According to the blasting mining test at the site,the broken rock mass and the cut and developed crack are the main reasons that the rockfill material mining cannot meet the design gradation requirement,under the rock mass condition of the left bank key structure slope of the Batang Hydropower Project,it is difficult to collect the rockfill material that meets the design requirements by adjusting the blasting parameters.Although there are more fine particles and worse gradation in the excavated materials of the left bank project of the Batang Hydropower Project,the physical characteristics of the rockfill materials were obtained through laboratory and field compaction tests,the rock-fill material of the dam was finally selected to excavate the slope of the left bank key building,and the blasting parameters,filling and rolling construction parameters of the rock-fill material were determined to ensure the mining and filling quality of the rock-fill material of the dam,the project investment was saved,and new rock-fill quarrying sites were prevented from damaging the fragile ecological environment of the Tibetan plateau in the upstream of Jinsha River,resulting in better economic and social benefits.

关 键 词：岩体破碎 坝料开采 爆破试验 颗粒级配 巴塘水电站 质量控制 

分 类 号：TV7[水利工程—水利水电工程] TV52TV523TV534