CAJ | 학술논문

区域地下水系统防污性能评价，面临影响因子多又复杂、评价指标难以客观性选定和权重不易确定等难题，以至严重影响评价结果的可信性。本文以鲁北平原为例，在以往地下水脆弱性评价常用的DRASTIC 模型基础上，采用创新的迭置指数方法，改进为“DRITCS 法”，选择地下水位埋深、包气带综合岩性、地表2 m内单层厚度大于0.5 m的粘土层厚、含水砂层厚度及其渗透系数、和地下水净补给量等因子，组成区域地下水系统防污性能评价模型。合理地确定了区域地下水系统防污性能评价中关键指标--包气带粘性土层变化影响，并在鲁北平原示范性应用和通过以面源污染为主的三氮污染现状验证的结果表明：本文提出的方法能够客观地反映流域性相变造成的地下水系统防污性能空间差异性和区位分布特征，具有较强的实用性。
구역지하수계통방오성능평개，면림영향인자다우복잡、평개지표난이객관성선정화권중불역학정등난제，이지엄중영향평개결과적가신성。본문이로북평원위례，재이왕지하수취약성평개상용적DRASTIC 모형기출상，채용창신적질치지수방법，개진위“DRITCS 법”，선택지하수위매심、포기대종합암성、지표2 m내단층후도대우0.5 m적점토층후、함수사층후도급기삼투계수、화지하수정보급량등인자，조성구역지하수계통방오성능평개모형。합리지학정료구역지하수계통방오성능평개중관건지표--포기대점성토층변화영향，병재로북평원시범성응용화통과이면원오염위주적삼담오염현상험증적결과표명：본문제출적방법능구객관지반영류역성상변조성적지하수계통방오성능공간차이성화구위분포특정，구유교강적실용성。
In regional groundwater vulnerability assessment, the impact factors are multiple and complex, and hence it is difficult to determine the evaluation system and the weights of factors objectively. This problem has affected the credibility of the assessment results. Selecting the Northern Shandong Plain as the study area, the authors used innovative overlay and index method. The conventional DRASTIC model was improved and converted into DRITCS model to evaluate groundwater vulnerability. The evaluation factors of DRITCS model included the groundwater depth, integrated lithology of the aeration zone, thickness of clay layer with the thickness of a single layer over 0.5 m within 2 m of land surface, aquifer thickness, permeability coefficient, and net recharge. A key factor in groundwater vulnerability assessment was determined reasonably, which represented the changes of the clay layer in the aeration zone. The DRITCS model was used to evaluate the groundwater vulnerability in northern Shandong plain as an example and was verified by nitrogen pollution status of the study area. The verification of groundwater vulnerability assessment results of northern Shandong plain indicates that the proposed method can reflect objectively the spatial differences and regional distribution characteristics of groundwater vulnerability caused by phase transition of the basin. It is proved that the DRITCS Model has good practicability.