华北水利水电学院学报
華北水利水電學院學報
화북수이수전학원학보
JOURNAL OF NORTH CHINA INSTITUTE OF WATER CONSERVANCY AND HYDROELECTRIC POWER
2001年
1期
19-20
,共2页
砂卵石层%数学模型%三维渗流%渗透系数
砂卵石層%數學模型%三維滲流%滲透繫數
사란석층%수학모형%삼유삼류%삼투계수
采用三维渗流理论对砂卵石层进行反演计算,根据覆盖层地质条件,建立三维渗流数学模型,然后给出一个渗透系数值,计算未建库前的地下水位,并与勘察所知的实际水位相比较,若两者不一致,则调整渗透系数,直至计算水位基本符合实测水位.以确定河床砂卵石层的渗透系数,为防渗处理提供可靠的设计依据.
採用三維滲流理論對砂卵石層進行反縯計算,根據覆蓋層地質條件,建立三維滲流數學模型,然後給齣一箇滲透繫數值,計算未建庫前的地下水位,併與勘察所知的實際水位相比較,若兩者不一緻,則調整滲透繫數,直至計算水位基本符閤實測水位.以確定河床砂卵石層的滲透繫數,為防滲處理提供可靠的設計依據.
채용삼유삼류이론대사란석층진행반연계산,근거복개층지질조건,건립삼유삼류수학모형,연후급출일개삼투계수치,계산미건고전적지하수위,병여감찰소지적실제수위상비교,약량자불일치,칙조정삼투계수,직지계산수위기본부합실측수위.이학정하상사란석층적삼투계수,위방삼처리제공가고적설계의거.
The paper discusses the determination of permeability coefficient of sand and gravel, based on the back analysis of three-dimensional seepage flow theory, thus providing sound design basis for antiseepage treatment. According to the geological conditions of the overburden, a three-dimensional seepage flow mathematic model is suggested, then a permeability coefficient is given, the groundwater level before the construction of the reservoir is caculated and compared with the measured water level. If the two levels are not consistent, the permeability coefficient is regulated till the calculated level conforms basically to the actual water level, and the permeability coefficient then is actual permeability coefficient of the overburden.