CAJ | 학술논문

堤防加固以后，在堤防内布置了混凝土防渗墙。为了研究混凝土防渗墙的施工是否会导致垸内地下水状况的变化以及影响垸内生产、生活，需要对堤防加固后垸内渗流场进行计算分析。利用三维渗流有限元方法，计算分析了堤防内设置防渗体对于垸内区域渗流场的影响。首先在分析区域地层、水文及水文地质基础上，建立了有限元计算模型，确定了计算方案。然后，针对洪水期、常态期及枯水期，分别计算了无防渗设施、有防渗设施情况下的区域渗流场；在此基础上，对比分析了渗流场的差异、渗流量的变化情况等。最后得出结论：除了堤防局部位置外，防渗设施对于垸内地下水分布范围基本没有影响；在洪水期，防渗体具有明显抗灾作用；而在常态期外湖水位下降，垸内需水时，防渗体对于垸内渗流量影响相应下降，且在下降到一定水位后，几乎没有影响；在枯水期，防渗体则具有抑制垸内水流外渗的益处。
제방가고이후，재제방내포치료혼응토방삼장。위료연구혼응토방삼장적시공시부회도치완내지하수상황적변화이급영향완내생산、생활，수요대제방가고후완내삼류장진행계산분석。이용삼유삼류유한원방법，계산분석료제방내설치방삼체대우완내구역삼류장적영향。수선재분석구역지층、수문급수문지질기출상，건립료유한원계산모형，학정료계산방안。연후，침대홍수기、상태기급고수기，분별계산료무방삼설시、유방삼설시정황하적구역삼류장；재차기출상，대비분석료삼류장적차이、삼류량적변화정황등。최후득출결론：제료제방국부위치외，방삼설시대우완내지하수분포범위기본몰유영향；재홍수기，방삼체구유명현항재작용；이재상태기외호수위하강，완내수수시，방삼체대우완내삼류량영향상응하강，차재하강도일정수위후，궤호몰유영향；재고수기，방삼체칙구유억제완내수류외삼적익처。
After the embankment is reinforced ,the seepage control walls are built in it .The seepage field is necessary to be calculated in order to study whether the seepage control wall will lead to the change of the groundwater and the influ -ence on people’s life .The impact of setting the impervious body in the embankment on the seepage field of the flood stor -age polders is calculated and analyzed by using 3-D seepage FEM .Firstly ,based on the analysis of regional geological structure and hydrogeology conditions ,a finite element model is created ,and the calculation scheme is determined . Then ,the regional seepage fields under seepage control measures and without prevention facilities are calculated separate -ly in connection with the flood period ,normal period and dry season .On this basis ,the seepage field and seepage flow changes are compared and analyzed .Finally ,The conclusions are obtained as follows :In addition to the local positions of the embankment ,the seepage control facilities have little impact on the groundwater distribution in the embankment ;In the flood period ,the impervious body has obvious effect on disaster preventing ;In the normal period ,the water level out-side the lake drops ,when water is needed inside the embankment ,the influence of impervious body on the seepage flow inside the embankment is decreased .When falling to a certain level ,the effect is disappeared .In the dry season ,the impervious body has the benefits to inhibit the leakage inside the embankment .