大梁水库主坝黄土碾压施工参数的选择

Parameter selection for loess rolling construction in Daliang reservoir

大梁水库是山西省万家寨引黄工程北干线上的一座调节水库,主坝为黄土心墙砂砾料混合坝。主坝黄土填筑工程量大,压实是控制碾压式土石坝施工质量的关键工序。由于土料的离散特性,必须通过碾压试验确定压实机具、铺料方法、铺料厚度、压实方法、碾压遍数、加水量和有效压实厚度等施工方法与参数。

Main dam of Daliang reservoir, a regulating reservoir on north main-line of Shanxi Wanjia-zhai Yellow River Diversion Project, is a sand-gravel-fill dam with loess core. Due to the large amountof filling, compaction is a key process to control the construction quality. Thus construction method andparameters must be determined by relevant site experiments, such as the rolling equipments, placingthickness, placing method, rolling times, the amount of water, effective compaction thickness, etc.