西华大学学报(自然科学版)
西華大學學報(自然科學版)
서화대학학보(자연과학판)
JOURNAL OF XIHUA UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
5期
87-91,103
,共6页
渗流分析%非饱和渗流理论%土石坝%集水廊道
滲流分析%非飽和滲流理論%土石壩%集水廊道
삼류분석%비포화삼류이론%토석패%집수랑도
seepage analysis%saturate-unsaturated theory%earth-rock fill dam%collection gallery
针对考虑土壤非饱和区且设有排渗系统对水库渗流影响研究不足的问题,结合工程实际,采用非饱和渗流分析方法,对设有集水廊道的土石坝渗流进行研究。结果表明:土壤非饱和区的存在导致大坝单宽流量增大,浸润线抬升;考虑非饱和渗流的影响研究渗流问题更符合工程实际情况,弥补了饱和渗流研究存在的不足,丰富了已有的渗流研究成果;此外,采用设置集水廊道的排水措施能够有效地降低坝内和下游河床浸润线,减少下游浸没区范围,有利于大坝整体抗滑稳定和后期安全运行。
針對攷慮土壤非飽和區且設有排滲繫統對水庫滲流影響研究不足的問題,結閤工程實際,採用非飽和滲流分析方法,對設有集水廊道的土石壩滲流進行研究。結果錶明:土壤非飽和區的存在導緻大壩單寬流量增大,浸潤線抬升;攷慮非飽和滲流的影響研究滲流問題更符閤工程實際情況,瀰補瞭飽和滲流研究存在的不足,豐富瞭已有的滲流研究成果;此外,採用設置集水廊道的排水措施能夠有效地降低壩內和下遊河床浸潤線,減少下遊浸沒區範圍,有利于大壩整體抗滑穩定和後期安全運行。
침대고필토양비포화구차설유배삼계통대수고삼류영향연구불족적문제,결합공정실제,채용비포화삼류분석방법,대설유집수랑도적토석패삼류진행연구。결과표명:토양비포화구적존재도치대패단관류량증대,침윤선태승;고필비포화삼류적영향연구삼류문제경부합공정실제정황,미보료포화삼류연구존재적불족,봉부료이유적삼류연구성과;차외,채용설치집수랑도적배수조시능구유효지강저패내화하유하상침윤선,감소하유침몰구범위,유리우대패정체항활은정화후기안전운행。
At pres-ent, the effect of drainage system on saturated-unsaturated seepage is little investigated under the condition of unsaturated soil in a dam .In present study , the aim is to investigate the change of seepage field in earth-rock fill dam with the collec-tion gallery on the basis of saturate-unsaturated theory .The results showed that the discharge of seepage per unit width and phreatic line increased owing to the effect of unsaturated soil .The saturate-unsaturated theory which was used to analyze seepage field in earth-rock fill dam was more reasonable than that of saturated theory .It made up even for the harshness of saturated seepage theory and enriched its achievements .Moreover , the results indicated that the collection gallery increased seepage gradient and could lead to seepage failure in some local region .However , the application of collection gallery reduced phreatic line in a dam and downstream riverbed of the dam.It decreased submerge areas in the downstream of the dam and could help to improve the anti -slide stability and safe operation of the dam.