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二滩水电站的施工为国际招标施工。根据挪威咨询专家组（ＡＧＮ）建议，导流洞围岩喷锚支护参数根据现场岩体开挖后具体情况确定，即在现场直接确定锚杆位置、长度及喷混凝土层厚度。在导流洞各阶段施工开挖过程中，在ＡＧＮ专家组指导下，我们在现场直接参与了此项工作的实施。本文对围岩锚杆实际支护情况进行了初步的总结和分析，将实际支护统计结果与锚杆布置设计参数及由Ｑ系统分类建议参数进行了比较，并对在岩体开挖现场布置锚杆的实施方式进行了讨论。
Ertan hydropower station construction for the international bidding construction. According to the advice of the Norwegian Advisory Group of Experts (AGN), the parameters of shotcrete and rock bolting for surrounding rock of diversion tunnels are determined according to the specific conditions after excavation of the rock mass in the site. That is, the location and length of rock bolts and the thickness of shotcrete layer are directly determined on site. During the construction and excavation of diversion tunnels in various stages, under the guidance of the AGN expert group, we are directly involved in the implementation of this work at the scene. In this paper, the actual support conditions of the surrounding rock bolt were initially summarized and analyzed. The actual support statistical results were compared with the design parameters of the rock bolt layout and the proposed parameters by the Q system classification, and the layout of the rock excavation site An embodiment of the anchor rod is discussed.