摘要
北京地铁16号线某矿山法区间隧道工程位于富水砂卵石地层,为保护地下水资源,采用区间隧道内深孔注浆止水方案。采用台阶法开挖区间隧道,盆式深孔注浆止水,从隧道上台阶向下台阶未开挖断面进行径向注浆加固,在隧道初支结构外轮廓形成注浆加固土体阻隔地下水,满足暗挖隧道无水开挖的条件。
A mining tunnel project along Beijing subway line 16 is located on the water-rich sand gravel stratum.To protect ground water resource,deep-hole grouting water-stop scheme for interval tunnel construction.Benching tunneling method was used to excavate the interval tunnel,and basin-type deep hole grouting water-stop method to carry out longitudinal grouting and reinforcement from the upper bench to unexcavated section at lower bench.Grouting reinforcement soil could be formed along the outside surface of tunnel initial supporting structure.The ground water was successfully stopped and water-free conditions for mining tunnel excavation was satisfied.
作者
王杨
WANG Yang(Beijing Construction Engineering Group Co.,Ltd.,100055,Beijing,China)
出处
《建筑技术》
2020年第7期776-778,共3页
Architecture Technology
关键词
富水砂卵石地层
暗挖隧道
深孔注浆止水
water-rich sand gravel stratum
mining tunnel
deep-hole grouting water stoppage
作者简介
王杨(1987-),男,黑龙江鹤岗人,项目技术部长,e-mail:289370016@qq.com.
