暗涵施工监理实施细则-正文》

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1、暗涵施工监理实施细则一、工程概况1、概况屯里车辆段±0.00以下土建工程设计有两个暗涵（框架排水涵），即暗涵-1和暗涵-2，钢筋混凝土箱涵。暗涵-1位于U型槽出入段线下部，呈折现型布置，跨U型槽入段线中心里程为RDK1+187.358，跨U型槽出段线中心里程为CDK0+902.751，总长度为78.212m，净空尺寸为双向2×3.6m×1.8m；暗涵-2位于车辆段西北角导改路下部，总长度为23.594m，净空尺寸为单向2×3.6m×1.8m。暗涵-1位于楊屋塘上游，暗涵-2接高坡塘，暗涵-1与暗涵-2通过排水明渠连接。涵洞淤泥深度大

2、概3米左右，水深约1米，基坑开挖深度约4.2m左右，基坑开挖坡度1：1.5，出入口为八字型出水口。2、工程地质情况⑴地形地貌场地主要为剥蚀残丘地貌，场地内地势起伏很大，地势总体呈东高西低，丘陵最高海拔标高为134.45m。场地范围内主要为林地、农田，局部为藕塘。暗涵位为鱼塘区，鱼塘水深约0.4～1.2m，淤泥厚度为0.3～1.7m。⑵地层岩性场区地层由上而下依次为：杂填土①1层、第四系全新世沉积层（Q4l）、第四系上更新统残、坡积层（Q3el+dl）、古近系岩层（E）。分述如下：①填土（Q4ml）Opinionsandsuggest

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