CAJ | 학술논문

针对中卫机场地下水水位过高的问题，通过对场区水文地质条件的分析，以三维非稳定地下水流的数学模型为基础，使用 Visual MODFLOW 软件对机场地下水流场以及修建截水沟对场区地下水位的影响进行模拟。模拟结果表明：开挖截水沟可以有效的降低场区地下水位，并满足地下水位临界高度2．0 m 的要求；场区水位受下游北干渠水位的影响较大，应充分考虑下游水位对降水效果的影响；地下水位下降达到最终状态所需时间较长（大于1年），下降速率随时间的增长而逐渐降低，截水沟应在场区土方工程开工前一段时间开挖完成。
침대중위궤장지하수수위과고적문제，통과대장구수문지질조건적분석，이삼유비은정지하수류적수학모형위기출，사용 Visual MODFLOW 연건대궤장지하수류장이급수건절수구대장구지하수위적영향진행모의。모의결과표명：개알절수구가이유효적강저장구지하수위，병만족지하수위림계고도2．0 m 적요구；장구수위수하유북간거수위적영향교대，응충분고필하유수위대강수효과적영향；지하수위하강체도최종상태소수시간교장（대우1년），하강속솔수시간적증장이축점강저，절수구응재장구토방공정개공전일단시간개알완성。
Aiming at the problem of the higher underground water level in Zhongwei Airport ,through analyzing its hydro-geological conditions ,and based on the mathematical model of three-dimensional unsteady underground flow ,the Visual MODFLOW was applied to simulate the influences of the underground water level caused by both the groundwater flow field and the construction of cutoff ditches .The results illustrate that it is effective for the ditch excavation to lower the groundwater level in the airport area ,which could meet the requirement for the critical height of 2 .0 meters .The water level is greatly affected by the north canal’s water level in the downstream ,so the influence of the downstream water level should be considered .It would take a long time (greater than 1 year) to reach the final state for level falling ,and the falling rate would decreased gradually along with the time increasing ,therefore ,the cutoff ditches should be finished for a period before the beginning of earthwork construction .