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铜街子水电站坝址左岸岸坡下埋藏一深达77米,宽30～40米的故河槽(以下简称左深槽),为适应该处复杂的地形、地质条件,其接头型式经最后审定采用沥青混凝土斜墙堆石坝。该方案利用导流明渠左挡墙为斜墙支承,深槽坝段以两道混凝土防渗墙支撑挡墙,使临时工程与永久工程、防渗与承重相结合。本文着重介绍了跨越深槽段坝体及挡墙下承重式防渗墙的平面有限元分析结果。
In order to adapt to the complex terrain and geological conditions of the area, the joint type of the joint is buried for a depth of 77 meters and a width of 30 to 40 meters (hereinafter referred to as the left deep groove) to be buried beneath the left bank slope of the dam site of Tongjiezi Hydropower Station Adopt asphalt concrete inclined wall rockfill dam. The scheme uses the left retaining wall of the diversion channel to support the inclined wall, and the deep groove dam supports the retaining wall with two concrete impermeable walls so that the temporary works and the permanent works are combined with seepage prevention and load-bearing. This paper focuses on the finite element analysis results of plain-fill cut-off walls of dam body and retaining wall under deep groove section.