富水砂层盾构机穿越锚管清障区施工技术应用.pdf
DOI10.13905/j.cnki.dwjz.2020.12.032
富水砂层盾构机穿越锚管清障区施工技术应用
CONSTRUCTIONTECHNOLOGYAPPLICATIONOFSHIELDMACHINECROSSINGANCHORPIPE
CLEARANCEAREAINWATER-RICHSAND
王晓明
(中国电建集团铁路建设有限公司,郑州450000)
WANGXiaoming
(ChinaPowerConstructionGroupRailwayConstructionCo.,Ltd.,Zhengzhou450000,China)
摘要】哈尔滨地铁2号线一期工程中央大街站~尚志大街站盾构区间左线,位于经纬360大厦临近经纬路一侧地下锚管
部分侵入隧道内,导致盾构机无法正常掘进。为了保证施工安全,降低施工风险,盾构机能够成功穿越锚管清障区,采用了旋
挖钻机切割清障后再进行盾构机掘进施工的方法,盾构机安全到达接收。解决了盾构直接穿越锚杆群导致地面塌陷、建筑物
破坏等重大事故的发生,具有广泛的推广价值。
关键词】富水砂层;盾构机;锚管清障区
中图分类号】TU413.9文献标志码】A文章编号】1001-6864(2020)12-0135-04
Abstract:TheleftlineofshieldtunnelingfromZhongdajieStationtoShangzhiDajieStationofthefirstphaseof
HarbinMetroLine2islocatedatthesideofJingwei360BuildingnearJingweiRoad.Suchlocationfeaturesthat
partoftheundergroundanchorpipeinvadesintothetunnel,makingtheshieldtunnelingmachineunabletowork
normally.Inordertoensuretheconstructionsafetyandreducetheconstructionrisk,theshieldtunnelingmachine
cansuccessfullypassthroughtheanchorpipearea.Inaddition,therotarydrillingmachineisadoptedtocutand
removeobstaclesbeforetheshieldtunnelingconstruction,whichsuccessfullyrealizesthesafearrivaloftheshield
tunnelingmachine.Thepresentedmethodwouldsolvethemajoraccidentssuchasgroundcollapseandbuilding
damagecausedbyshieldtunnelingdirectlythroughanchorgroup,whichhastheextensivepopularizationvalue.
Keywords:water-richsandlayer;shieldmachine;anchorpipeclearingarea
0引言道,隧道断面外径6.28m,长度719m。其中位于左线里
地铁区间盾构施工中遇到地下障碍物,导致盾构程SK17+508.800~SK17+638.800之间的经纬360大
难以推进,多采用跟管钻进套取法、盾构开舱切割法、