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一、工程概况本工程位于陇海铁路西段,在300米半径弯道上。原为挖沟设一孔4.3米钢筋混凝土板梁桥,桥下净空高度2.06米。自然沟槽上游陡,下游缓,沟壁溜坍,向源侵蚀,泥流严重,为结构类稠泥型泥流。1968年10月泥流曾掩埋线路长400多米。1974年6、7两月曾二次漫溢铁路,后一次中断行车达4小时。兰州铁路局先后在上游修建六道浆砌
First, the project profile The project is located in the western section of the Longhai Railway, 300 meters radius on the bend. The original ditch ditch set a hole 4.3 meters reinforced concrete girder bridge, the bridge under the clearance height of 2.06 meters. Natural trench upstream steep, downstream slow, ditch collapse, to the source erosion, mud flow is serious, as structural type muddy mudflow. October 1968 mud flow was buried more than 400 meters long line. In June and July 1974, the railway was flooded twice and the last one was interrupted for 4 hours. Lanzhou Railway Bureau has built six slurry in the upper reaches