CAJ | 학술논문

地下水开采造成的地面沉降会使高速铁路路基产生较大变形，进而影响行车安全。为研究在高速铁路附近开采浅层地下水对路基变形的影响，本文结合土体渗透固结理论，利用有限元软件ABAQUS建立三维流固耦合模型，系统分析不同抽水速度和与抽水井不同距离条件下的路基变形。分析结果表明：抽水速度和抽水井距离对高速铁路路基的变形具有显著影响。当抽水速度一定时，路基的变形随着与抽水井的距离增大而减小；当与抽水井的距离一定时，路基的变形随抽水速度增大而增大。故为减小地下水位下降对路基的影响，应严格禁止在铁路附近增加新的开采井，严格控制在影响范围内开采地下水。
지하수개채조성적지면침강회사고속철로로기산생교대변형，진이영향행차안전。위연구재고속철로부근개채천층지하수대로기변형적영향，본문결합토체삼투고결이론，이용유한원연건ABAQUS건립삼유류고우합모형，계통분석불동추수속도화여추수정불동거리조건하적로기변형。분석결과표명：추수속도화추수정거리대고속철로로기적변형구유현저영향。당추수속도일정시，로기적변형수착여추수정적거리증대이감소；당여추수정적거리일정시，로기적변형수추수속도증대이증대。고위감소지하수위하강대로기적영향，응엄격금지재철로부근증가신적개채정，엄격공제재영향범위내개채지하수。
Land subsidence induced by groundwater exploitation can cause significant deformation in the subgrade of high-speed railway tracks, and so threaten the safety of train operations. To study the process of subgrade subsidence associated with groundwater exploitation near high-speed railway lines, a 3D lfuid-solid coupling model was created based on the inifltrating solidiifcation theory and using the ifnite element software ABAQUS. Subgrade deformation caused by various pumping rates and distances was analyzed. The results show that pumping output and pumping distance both have a signiifcant inlfuence on the deformation of the subgrade of high-speed railway lines. Under certain pumping output conditions, deformation of the subgrade decreases with an increase in pumping distance; however, at certain pumping distances, subgrade deformation increases with increasing output. Therefore, to control the influence of groundwater exploitation on the subgrade, no new wel s should be developed near the railway, and groundwater exploitation should be strictly limited within the area that affects the track.