一、工程概述 龙泉桥系旧桥改建工程,桥墩位于主河槽,河流低水位的流速每秒1.5～2.0米,水深1～2来。河床复盖层地较深厚,表层2米以内为砂卵石,砂的含量约占30％,卵石颗粒粗而渗水大,并多块石、条石及木眠牛等人为障碍,这是利用老桥位修建基础的特点;以下为砂隔,夹有大量孤石,粒径盈尺,含黄土约 First, the project overview Longquan Bridge Department of the old bridge reconstruction project, the pier located in the main channel, the river low-level flow rate of 1.5 to 2.0 meters per second, the depth of 1 to 2 years. Bed cover thicker, within 2 meters from the surface of the sand and gravel, sand content of about 30%, pebbles coarse and seepage water, and more stones, stones and wooden sleep cattle and other human barriers, which is the use of old Bridges built foundation of the characteristics of the following sand septum, sandwiched with a large number of boulders, particle size earnings feet, including loess