吉林水利
吉林水利
길림수리
JI LIN WATER RESOURCES
2014年
5期
9-13
,共5页
渗流分析%各项异性%IGW软件
滲流分析%各項異性%IGW軟件
삼류분석%각항이성%IGW연건
seepage analysis%anisotropic%IGW
渗流严重危害着水利工程,以往渗流分析集中在各项同性,但近些年对某些复杂地层的研究,发现地层渗流表现出强烈的各项异性,而且各项异性的危害性比各项同性更大。为了实现对土石坝各项异性地层的二维渗流场真实区域的数值模拟,利用IGW数值模拟软件,基于孔隙介质模型,求解土石坝各项异性地层的渗流场,对正常蓄水位渗流场进行模拟分析。结果表明,坝体浸润线随各项异性的增大而逐渐抬高,浸润线出逸点坡降逐渐变小;增加各地层渗透系数(K)值,地基渗透流量(Q)随渗透系数的增加而加大,浸润线逸出坡降也加大,结果可为土石坝各项异性地层渗流计算及工程所需的合理防渗措施提供依据。
滲流嚴重危害著水利工程,以往滲流分析集中在各項同性,但近些年對某些複雜地層的研究,髮現地層滲流錶現齣彊烈的各項異性,而且各項異性的危害性比各項同性更大。為瞭實現對土石壩各項異性地層的二維滲流場真實區域的數值模擬,利用IGW數值模擬軟件,基于孔隙介質模型,求解土石壩各項異性地層的滲流場,對正常蓄水位滲流場進行模擬分析。結果錶明,壩體浸潤線隨各項異性的增大而逐漸抬高,浸潤線齣逸點坡降逐漸變小;增加各地層滲透繫數(K)值,地基滲透流量(Q)隨滲透繫數的增加而加大,浸潤線逸齣坡降也加大,結果可為土石壩各項異性地層滲流計算及工程所需的閤理防滲措施提供依據。
삼류엄중위해착수리공정,이왕삼류분석집중재각항동성,단근사년대모사복잡지층적연구,발현지층삼류표현출강렬적각항이성,이차각항이성적위해성비각항동성경대。위료실현대토석패각항이성지층적이유삼류장진실구역적수치모의,이용IGW수치모의연건,기우공극개질모형,구해토석패각항이성지층적삼류장,대정상축수위삼류장진행모의분석。결과표명,패체침윤선수각항이성적증대이축점태고,침윤선출일점파강축점변소;증가각지층삼투계수(K)치,지기삼투류량(Q)수삼투계수적증가이가대,침윤선일출파강야가대,결과가위토석패각항이성지층삼류계산급공정소수적합리방삼조시제공의거。
Seepage seriously endanger water conservancy ,seepage analysis in the past focused on same fea-tures,but in recent years the study of certain complex formation found seepage strata showed a strong anisotropy,and the its dangers is greater than the former.In order to achieve a two-dimensional numerical sim-ulation of the real area of earth dam seepage field formations of the opposite ,the use of numerical simulation software IGW,porous media model,solving anisotropic earth dam seepage field formations of the normal water level seepage field simulation analysis.The results showed that the dam seepage line with the opposite increas-es gradually elevated,the saturation line Yat-point gradient becomes smaller;increased permeability layer over the(K) values,the foundation infiltration flow(Q) with the permeability coefficient increased infiltration escape gradient line also increased,the results can be reasonably embankment dam seepage control measures anisotropic formation seepage and provides evidence for engineering required.