水利科技与经济
水利科技與經濟
수리과기여경제
2015年
5期
14-16
,共3页
冻胀%混凝土衬砌%渠道%有限元分析
凍脹%混凝土襯砌%渠道%有限元分析
동창%혼응토츤체%거도%유한원분석
frost heave%concrete lining butcher%channel%finite element analysis
我国农业用水量巨大,但是用水效率低,浪费现象严重,因此研究节水措施具有重要意义。混凝土衬砌输水渠道是我国农业灌渠的主要形式。我国国土面积的54%位于季冻区,混凝土衬砌输水渠道在冬季发生冻胀破坏,会严重影响防渗效果。从国内外研究现状出发,分析了混凝土衬砌渠道冻胀破坏机理及影响因素。研究表明,基土、温度场、湿度场、渠道走向均会影响冻胀破坏程度。
我國農業用水量巨大,但是用水效率低,浪費現象嚴重,因此研究節水措施具有重要意義。混凝土襯砌輸水渠道是我國農業灌渠的主要形式。我國國土麵積的54%位于季凍區,混凝土襯砌輸水渠道在鼕季髮生凍脹破壞,會嚴重影響防滲效果。從國內外研究現狀齣髮,分析瞭混凝土襯砌渠道凍脹破壞機理及影響因素。研究錶明,基土、溫度場、濕度場、渠道走嚮均會影響凍脹破壞程度。
아국농업용수량거대,단시용수효솔저,낭비현상엄중,인차연구절수조시구유중요의의。혼응토츤체수수거도시아국농업관거적주요형식。아국국토면적적54%위우계동구,혼응토츤체수수거도재동계발생동창파배,회엄중영향방삼효과。종국내외연구현상출발,분석료혼응토츤체거도동창파배궤리급영향인소。연구표명,기토、온도장、습도장、거도주향균회영향동창파배정도。
Agricultural water consumption is huge , but the low efficiency of water use , waste is seri-ous, so the water saving measures is of great significance.Concrete lining channel is the main form of agricultural irrigation system.54%of the country′s territory is located in the season frozen zone , con-crete lining channel frost heaving damage in winter , will seriously affect the seepage prevention effect.Starting from the research status at home and abroad , this paper analyzes the concrete lining channel frost heaving damage mechanism and influencing factors.Research shows that:the soil tem-perature field and humidity field , cross section form and lining structure will affect the frost heaving damage.