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一、前言铜街子水电站是我国正在施工的重点工程之一。坝址工程地质条件复杂,左岸接头坝的坝型确定为沥青混凝土斜墙堆石坝,最大坝高为46.0米,坝顶高程479.0米,坝底高程433.0米。堆石坝沿坝轴线方向前后段均座落在基岩上,中间部位需跨越一条基岩深埋谷,深槽口宽30～40米,堆积层厚达70余米。为满足导流明渠进口段布置要求,设置一道混凝土导墙。
I. Preface Tongjizi Hydropower Station is one of the key projects under construction in China. The geological conditions of the dam site are complex. The dam type of the left bank joint dam is determined as an asphalt concrete inclined wall rockfill dam with a maximum dam height of 46.0 meters, an elevation of 479.0 meters and an elevation of 433.0 meters. The rockfill dam is located on the bedrock along the axis of the dam. The middle part of the dam needs to cross a bedrock of deep buried valleys with a width of 30-40 meters and a thickness of more than 70 meters. To meet the diversion channel import section layout requirements, set a concrete guide wall.