CAJ | 학술논문

地铁盾构隧道施工将不可避免地扰动周围地层，使周围地层发生变形，导致地表沉降，引起附近地下管线变形。地表沉降到一定程度，将影响地下管线的安全。因此，盾构隧道施工给地下管线的安全性带来极大风险。本文以南昌地铁1号线七标青山湖大道站～高新大道站区间盾构隧道工程为背景，针对南昌富水砂层地质，分析了盾构隧道施工期下穿地下管线施工的安全风险，并对其进行了评价，提出了各种安全风险的控制措施，为工程的顺利进行提供了参考与保障，并可供类似工程的设计和施工时参考。
지철순구수도시공장불가피면지우동주위지층，사주위지층발생변형，도치지표침강，인기부근지하관선변형。지표침강도일정정도，장영향지하관선적안전。인차，순구수도시공급지하관선적안전성대래겁대풍험。본문이남창지철1호선칠표청산호대도참～고신대도참구간순구수도공정위배경，침대남창부수사층지질，분석료순구수도시공기하천지하관선시공적안전풍험，병대기진행료평개，제출료각충안전풍험적공제조시，위공정적순리진행제공료삼고여보장，병가공유사공정적설계화시공시삼고。
Inevitably shield tunnel excavation wil disturb the surrounding soil, bringing about soil deformation and displacement. The disturbance wil reach ground surface, resulting in ground subsidence. Ground subsidence wil then cause the nearby underground pipelines to deform. When the ground subsidence increases to some extent, the safety and function of the pipelines wil be questioned. Therefore, more attention should be paid to the safety of the pipelines during tunnel excavation. In consideration of the geology of water-rich sand layer at Nanchang, analysis on the security risks of shield tunnel excavation under the pipeline is conducted, taking an example of shield tunneling from Qingshanhu road station to Gaoxin road station of Nanchang Subway Section 7, Line 1. Security appraisal of the excavation is done and some preventive measures are presented due to the security risks, which ensures that the shield tunnel construction proceed favorably. The Results can provide a lot of experience for the similar engineering.