人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
9期
85-89
,共5页
梅伟标%柯雄%武鑫%万军伟
梅偉標%柯雄%武鑫%萬軍偉
매위표%가웅%무흠%만군위
洪水淹没%水质变化分析%地下水污染%淋滤试验%洪湖蓄洪区
洪水淹沒%水質變化分析%地下水汙染%淋濾試驗%洪湖蓄洪區
홍수엄몰%수질변화분석%지하수오염%림려시험%홍호축홍구
flood inundation%water quality variation analysis%ground water pollution%leaching experiment%flood storage area of Honghu Lake
为分析洪湖东分蓄洪区在分洪条件下，洪水对地下水水质的影响，采集了蓄洪区4组有代表性的包气带原状土样在室内开展了淋滤试验以分析滤出液中污染物浓度的变化规律。试验分析结果表明：洪湖分蓄洪区包气带黏性土对硝酸盐和K+有一定的吸附性，不同土质吸附性能也不同；而Ca2+、Mn2+、Cu2+、Pb2+主要表现为解吸作用，从土壤中解吸出来进入下伏含水层，导致地下水硬度增大和重金属污染加重。分蓄洪区蓄洪后，地下水污染加重这一现象应引起相关部门密切关注。
為分析洪湖東分蓄洪區在分洪條件下，洪水對地下水水質的影響，採集瞭蓄洪區4組有代錶性的包氣帶原狀土樣在室內開展瞭淋濾試驗以分析濾齣液中汙染物濃度的變化規律。試驗分析結果錶明：洪湖分蓄洪區包氣帶黏性土對硝痠鹽和K+有一定的吸附性，不同土質吸附性能也不同；而Ca2+、Mn2+、Cu2+、Pb2+主要錶現為解吸作用，從土壤中解吸齣來進入下伏含水層，導緻地下水硬度增大和重金屬汙染加重。分蓄洪區蓄洪後，地下水汙染加重這一現象應引起相關部門密切關註。
위분석홍호동분축홍구재분홍조건하，홍수대지하수수질적영향，채집료축홍구4조유대표성적포기대원상토양재실내개전료림려시험이분석려출액중오염물농도적변화규률。시험분석결과표명：홍호분축홍구포기대점성토대초산염화K+유일정적흡부성，불동토질흡부성능야불동；이Ca2+、Mn2+、Cu2+、Pb2+주요표현위해흡작용，종토양중해흡출래진입하복함수층，도치지하수경도증대화중금속오염가중。분축홍구축홍후，지하수오염가중저일현상응인기상관부문밀절관주。
In order to analyze the influence of flood diversion on underground water quality, 4 groups of typical undisturbed soil samples were taken in the vadose zone of eastern flood storage area of Honghu Lake and an indoor leaching experiment was con-ducted to analyze the variation law of pollutant concentration in the leaching liquid. The experiment indicates that the vadose clay in flood storage area of Honghu Lake could absorb nitrate and K+ to some degree and the absorbability differs in different soil;but other ions such as Ca2+、Mn2+、Cu2+、Pb2+ mainly dissolve into the quaternary aquifer, leading to groundwater hardness augment and heavy metal pollution, which should be focused after the impoundment of the flood storage area.
