长河坝水电站坝体过渡料爆破直采法技术研究  

Study on Direct Blasting Mining Technique of Transition Material for the Dam Filling of Changheba Hydropower Station

作　　者：王海云 樊鹏[2] 

机构地区：[1]西藏开发投资集团有限公司,西藏拉萨850002 [2]中国水利水电第五工程局有限公司,四川成都610066

出　　处：《水力发电》2018年第2期92-94,共3页Water Power

基　　金：财政部施工新技术研究与开发项目(2150399);中国水利水电建设股份有限公司重大科技专项"300 m级高心墙土石坝关键施工技术"研究课题

摘　　要：长河坝水电站坝体过渡料填筑量大,且过渡料场的岩石偏硬,爆破施工时,决定采用高单耗爆破直采法技术。为得到合理的爆破参数,进行了多次爆破试验,并对结果进行了比较分析,综合考虑利用率与造孔工程量,最终爆破单耗采用2.2 kg/m^3,并得到一套较为全面的偏硬岩条件下高标准过渡料爆破直采工艺。Because the filling volume of transition material in dam construction of Changheba Hydropower Station is large and the rock in transition material quarry is too rigid, the excavation of transition material is decided by using direct blasting mining technique with higher powder factor. In order to obtain reasonable b]asting parameters, several blasting tests are carried out, and the results are compared and analyzed. Taking into account the utilization rate of transition material and the amount of drilling work, the final blasting powder factor is determined as 2.2 kg/m3, and a set of more comprehensive blasting mining process suitable for hard rock is summarized.

关 键 词：过渡料 爆破直采法 级配 长河坝水电站 

分 类 号：TV542[水利工程—水利水电工程]