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本文主要阐述在北京通惠河南岸污水干线工程70 #—71 #穿越京包铁路高填土路基段 ,暗挖双孔大断面并联拱型排水隧道试验研究中 ,采用以“浅埋暗挖”为主要工法 ,并辅以管井、砂井组合降水 ,铁路路轨“五扣三束吊轨梁”、钢管棚以及小导管超前注浆加固等重要辅助工法和抑制铁路路基 (路堤 )沉降技术措施 ,成功地解决了在高填土铁路路基下暗挖大断面排水隧道的技术难题 ,获得北京市1998年科技进步二等奖 ,可供今后类似工程参考
This paper mainly elaborates on the experimental study of the double-hole large-section parallel arch dredging tunnel in the cross-section of the high-fill embankment of Beijing- As the main method, and supplemented by tube well, sand well combination of precipitation, railway rails “five buckle three beam girder”, steel shed and small pipe advance grouting and other important auxiliary methods and suppression of railway subgrade (embankment) settlement technical measures, Successfully solved the technical problems of excavating large-section drainage tunnel under high fill railway embankment, and obtained the second prize of Beijing Science and Technology Progress Award in 1998 for reference of similar projects in the future