CAJ | 학술논문

以长沙地铁二号线盾构机过某砂卵石地层段时开挖面失稳,出现地表塌陷为实例,针对埋深较浅、砂卵石层较厚的地质特点,采取地表注浆加固与盾构机内部处理相结合的方法,较好地起到了固岩、堵水、减少扰动的作用。同时,运用监控量测的手段,及时优化施工,使隧道通过坍陷地段,盾构机成功地从砂卵石地层中脱困。
이장사지철이호선순구궤과모사란석지층단시개알면실은,출현지표탑함위실례,침대매심교천、사란석층교후적지질특점,채취지표주장가고여순구궤내부처리상결합적방법,교호지기도료고암、도수、감소우동적작용。동시,운용감공량측적수단,급시우화시공,사수도통과담함지단,순구궤성공지종사란석지층중탈곤。
Based on the engineering example of instability and surface subsidence occurred when Changsha subway tunnel shield machine passing the section of earth and sandy pebble,in light of the geological characteristics of shallow buried depth and thick sandy pebble layer,the methods of surface strengthening with grouting and internal shield machine processing are taken,which plays an effective role in reinforcing rock,stopping water,reducing disturbance.At the same time,the means of monitoring measurement are used to conduct timely construction optimization to ensure the construction through the subsidence area and successfully relieve the shield machine from the sandy pebble formation.