西藏拉洛水利枢纽工程碾压式酸性骨料沥青混凝土心墙施工

Construction of rolled acid aggregate asphalt concrete core wall of Laluo Hydro Project in Tibet

在西藏拉洛水利枢纽工程沥青混凝土心墙施工过程中,碱骨料场被划为黑颈鹤保护区不允许进行开采,且周边无可替代料场。为了解决周边无碱骨料的情况,研究应用了酸性砂砾石骨料。最终采用碱性骨料、酸性骨料相结合、人工与摊铺机铺筑相结合的形式施工。对酸性骨料在高海拔地区的施工进行了分析,并对经验进行了总结。目前施工已经完成,质量及进度符合要求。研究成果可为高海拔地区沥青混凝土心墙施工技术提供借鉴。

During the construction of the asphalt concrete core wall of the Laluo Hydro Project in Tibet, the alkali aggregate yard was designated as the black necked crane protection area where the mining was not allowed and there was no alternative material yard around.In order to solve thisproblem, the acid sand gravel aggregate was studied and applied.The combination of alkaline aggregate and acid aggregate, manual and paver paving were adopted for construction.The construction of acid aggregate in high altitude area was analyzed and the experience was summarized.Now the construction has been completed, and the quality and progress meet the requirements.The research result can provide reference as the construction technology for asphalt concrete core wall in high altitude areas.