CAJ | 학술논문

对于均质土坝，水位下降易使坝坡内外水压不平衡，形成不利坝坡的非稳定渗流而导致坝坡失稳，并对土坝安全造成隐患。为了研究库水位下降产生的非稳定渗流对均质土坝坝体边坡稳定性的影响，本文利用有限元分析方法，通过对不同参数不同取值的算例分析了均质土坝在库水位下降时的稳定性情况，结果表明：库水位下降易形成对上游坝坡稳定不利的逆向渗流，对于均质土坝坝体的稳定性影响较大，当渗透系数为1×10-4 cm/s，水位下降速度超过1 m/d时，坝体内浸润线变化极小，水位下降速度达到下降标准。
대우균질토패，수위하강역사패파내외수압불평형，형성불리패파적비은정삼류이도치패파실은，병대토패안전조성은환。위료연구고수위하강산생적비은정삼류대균질토패패체변파은정성적영향，본문이용유한원분석방법，통과대불동삼수불동취치적산례분석료균질토패재고수위하강시적은정성정황，결과표명：고수위하강역형성대상유패파은정불리적역향삼류，대우균질토패패체적은정성영향교대，당삼투계수위1×10-4 cm/s，수위하강속도초과1 m/d시，패체내침윤선변화겁소，수위하강속도체도하강표준。
For homogeneous earth dam,the water level dropped so dam and outside pressure imbalance is easy to form a non-steady flow negative slope,resulting in slope instability,cause of dam safety hazard.In order to study the unsteady flow generated when the water level dropped,the impact on the dam slope stability.In this paper we used finite element analysis method,the different values of different parameters numerical examples stable homogeneous earth when dropped in water level of the situation.The results showed that:the water level dropped formed on the upstream slope stability unfavorable reverse flow easily,when the hydraulic conductivity of 1 ×10-4cm/s,the water level dropped faster than 1m/d,the dam seepage line changes within the minimal,speed of falling water arrived to the drop standards.