桂林工学院学报
桂林工學院學報
계림공학원학보
JOURNAL OF GUILIN INSTITUTE OF TECHNOLOGY
2009年
4期
449-454
,共6页
欧业成%陈润玲%黄喜新%周训
歐業成%陳潤玲%黃喜新%週訓
구업성%진윤령%황희신%주훈
天然偏酸性地下水%pH值%影响因素%北海
天然偏痠性地下水%pH值%影響因素%北海
천연편산성지하수%pH치%영향인소%북해
natural weak acidic groundwater%pH%genesis%Beihai
广西北海市滨海平原松散沉积物中分布有潜水含水层和承压含水层,天然条件下地下水的pH 值普遍偏低,一般为4.5~6.5,最低3.33,且地下水的pH值在时空上呈现出一定规律的分布:在垂向上呈现由潜水-浅部承压水-深部承压水逐步降低的序列,在平面上地下水的pH值向海域方向略为减小;在时间上,pH值随季节上下波动,一般在雨季略高于旱季.一定酸度的大气降水,土壤矿物与化学成分,含水层的岩性、介质成分和结构等,是偏酸性地下水形成的物质基础,水循环状况则是偏酸性地下水形成的动力条件.
廣西北海市濱海平原鬆散沉積物中分佈有潛水含水層和承壓含水層,天然條件下地下水的pH 值普遍偏低,一般為4.5~6.5,最低3.33,且地下水的pH值在時空上呈現齣一定規律的分佈:在垂嚮上呈現由潛水-淺部承壓水-深部承壓水逐步降低的序列,在平麵上地下水的pH值嚮海域方嚮略為減小;在時間上,pH值隨季節上下波動,一般在雨季略高于旱季.一定痠度的大氣降水,土壤礦物與化學成分,含水層的巖性、介質成分和結構等,是偏痠性地下水形成的物質基礎,水循環狀況則是偏痠性地下水形成的動力條件.
엄서북해시빈해평원송산침적물중분포유잠수함수층화승압함수층,천연조건하지하수적pH 치보편편저,일반위4.5~6.5,최저3.33,차지하수적pH치재시공상정현출일정규률적분포:재수향상정현유잠수-천부승압수-심부승압수축보강저적서렬,재평면상지하수적pH치향해역방향략위감소;재시간상,pH치수계절상하파동,일반재우계략고우한계.일정산도적대기강수,토양광물여화학성분,함수층적암성、개질성분화결구등,시편산성지하수형성적물질기출,수순배상황칙시편산성지하수형성적동력조건.
Phreatic and confined aquifers are found in the unconsolidated sediments in coastal plain of Beihai, Guangxi. Under natural condition,pH of groundwater in the aquifers is low,ranging commonly from 4.5 to 6.5, and the minimum value is 3.33. It is found that the pH value of groundwater presents the regularity distribution with time and space. In vertical direction, pH value presents the sequence of gradually decrease from phreatic water,shallow confined water to deep-confined water. It decreases from land-area to sea-area. The pH value presents the characteristics of seasonal fluctuation. Usually it is higher in rainy season than in dry season. The genesis of the weak acidic groundwater is a certain acidity of atmospheric precipitation,lithology, media components and frame of aquifer,mineral and chemical composition in soil.The water circulation is the dynamic factor of acidic groundwater.