水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
6期
38-43
,共6页
均质土坝%渗流%饱和 - 非饱和%浸润线%稳定性
均質土壩%滲流%飽和 - 非飽和%浸潤線%穩定性
균질토패%삼류%포화 - 비포화%침윤선%은정성
homogeneous earth dam%seepage%saturated-unsaturated%phreatic line%stability
针对库水位下降对土石坝坝体滑坡的影响，以新集水库均质土坝为研究对象，基于非饱和土体渗流的基本理论，分析了不同速度库水位下降条件下，均质土坝非稳定渗流场的变化规律，计算了在渗流作用下坝坡的安全系数，分析了水库从35 m 正常蓄水位以速度0．1 m／d 、0．5 m／d 、1 m／d 、3 m／d 、6 m／d 、10 m／d 下降到5 m 最低水位坝体内浸润线和坝坡稳定性，得到了坝体内浸润线及坝坡安全系数随水位下降速度的变化规律，以期为新集水库坝坡的渗流稳定分析及正常运行提供参考。
針對庫水位下降對土石壩壩體滑坡的影響，以新集水庫均質土壩為研究對象，基于非飽和土體滲流的基本理論，分析瞭不同速度庫水位下降條件下，均質土壩非穩定滲流場的變化規律，計算瞭在滲流作用下壩坡的安全繫數，分析瞭水庫從35 m 正常蓄水位以速度0．1 m／d 、0．5 m／d 、1 m／d 、3 m／d 、6 m／d 、10 m／d 下降到5 m 最低水位壩體內浸潤線和壩坡穩定性，得到瞭壩體內浸潤線及壩坡安全繫數隨水位下降速度的變化規律，以期為新集水庫壩坡的滲流穩定分析及正常運行提供參攷。
침대고수위하강대토석패패체활파적영향，이신집수고균질토패위연구대상，기우비포화토체삼류적기본이론，분석료불동속도고수위하강조건하，균질토패비은정삼류장적변화규률，계산료재삼류작용하패파적안전계수，분석료수고종35 m 정상축수위이속도0．1 m／d 、0．5 m／d 、1 m／d 、3 m／d 、6 m／d 、10 m／d 하강도5 m 최저수위패체내침윤선화패파은정성，득도료패체내침윤선급패파안전계수수수위하강속도적변화규률，이기위신집수고패파적삼류은정분석급정상운행제공삼고。
According to the effect of water level drawdown on the landslide of earth rock dams ,based on saturated-unsat-urated seepage theory ,the Xinji reservoir homogeneous earth dam was studied .The unstable seepage field changing rules at different drawdown rate were analyzed ,and the safety factor of the dam under the action of seepage was calculated . Meanwhile the phreatic line within the dam and the dam slope stability were analysed when the reservoir water level was decreased from the 35 m-normal water level to the 5 m-lowest water level with the speed of 0 .1 m/d ,0 .5 m/d ,1 m/d , 3 m/d ,6 m/d ,10 m/d ,from which the dam phreatic line and slope safety factor variations with the rate of water level drawdown were obtained .All of this will provide references for the stability analysis and safety evaluation of Xinji reser-voir dam .
