CAJ | 학술논문

采用饱和-非饱和渗流场数学模型，通过室内试验测得的黏土渗透系数并运用数值模拟手段研究饱和-非饱和填埋场衬垫系统中水渗流规律。数值模拟结果分析表明：在饱和渗流场中水的运移速度明显大于处于非饱和状态下的运移速度，并导致在相同位置衬垫层处产生不同的压力水头，且随着时间的变化，非饱和渗流场下的压力水头远远小于饱和状态下的数值；此外，还验证了工程实际中采用渗透系数为10-7 cm/s数量级黏土衬垫系统的合理性。该研究为分析渗滤液水分运移规律时采用非饱和渗流场提供理论数据，并验证所推荐的填埋场衬垫系统土工参数的正确性。
채용포화-비포화삼류장수학모형，통과실내시험측득적점토삼투계수병운용수치모의수단연구포화-비포화전매장츤점계통중수삼류규률。수치모의결과분석표명：재포화삼류장중수적운이속도명현대우처우비포화상태하적운이속도，병도치재상동위치츤점층처산생불동적압력수두，차수착시간적변화，비포화삼류장하적압력수두원원소우포화상태하적수치；차외，환험증료공정실제중채용삼투계수위10-7 cm/s수량급점토츤점계통적합이성。해연구위분석삼려액수분운이규률시채용비포화삼류장제공이론수거，병험증소추천적전매장츤점계통토공삼수적정학성。
The conductivity coefficient of clay is texted in indoor experiment , and the law of seepage in liner system under saturated-unsaturated condition is stydied by the method of numerical simulation based on the two mathemati-cal model of the seepage field .Numerical simulation results show that the velocity of water in saturated seepage field is obviously larger than that of unsaturated , thus causing distinct pressure heads in the same height of the two liner systems.Moreover, the pressure head in the condition of unsaturated is much smaller than that of saturated as time going by.In addition, the rationality of the adoption of clay in the order of magnitude of 10 -7 cm/s in engineering practice .The theoretical data is provided to conduct us to use the unsaturated seepage when analyzing the migration of leachate from this study , and the correction of the recommended geotechnical parameters in landfill is verified .