北京地铁区间隧道浅埋暗挖法穿越河流桥桩综合施工技术.pdfVIP

·隧道 / 地下工程 · 北 京 地 铁 区 间 隧 道 浅 埋 暗 挖 法 穿 越 河 流 桥 桩 综 合 施 工 技 术 熊兴国 (中铁二十局集团有限公司 　西安 　7 100 16) 摘 　要 　北京地铁十号线 10标段区间隧道采用浅埋暗挖法穿越西坝河桥桩 ,施工风险高、难度大 。在介绍了该区 间隧道的工程特点和工程地质条件后 ,较为详细地分析了区段的施工方案及其特点、旋喷咬合桩 、深层搅拌桩 、台 阶法施工等关键施工技术 ,可为类似城市地下工程的施工提供参考 。 关键词 　区间隧道 　加固处理 　台阶法 　监控量测 　浅埋暗挖法 中图分类号 　U455. 4　　文献标识码 　B 　　文章编号 　1009 - 4539 (2007) 05 - 0033 - 03 Syn thetica l C on struction Techn iques for Cro ssin g the R iver an d P iles by Sha llow Tunn ellin g M ethod in Be ij ing M etro X ion g X in g g u o ( Ch ina R ailway 20th Bu reau Group Co. , L td. , X i ’an 7 100 16 , Ch ina) A b stract　The section tunnels in Lot 10 of B eij ing M etro L ine No. 10 is con structed by Shallow TunnellingM ethod to un dercro ss the X ibahe R iver and the p lie s in it. The con struction of th is section tunnels is of h igh risk s due to its difficu ltie s re su lting from the comp licated and comp rehen sive geological condition s (m ain ly for the saturated sand strata above, in and bellow the tunnel elevation s) and the much clo se distances between the tunnel and the p ile s. Th is p ap er m akes a brief in troduction about the p roject p rofile and geological condition s, then give s a detailed analysis on the characteristic s of the M ethod Statem ent, Con struction of J etting and M ixing P iles, Stage Tunneling M ethod etc. , wh ich m ay be u sefu l for the sim ilar underground work s. Ke