绿色科技
綠色科技
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LVSE DASHIJIU
2015年
5期
246-249
,共4页
有限元分析%强度折减%水位变化%坝坡%稳定性
有限元分析%彊度摺減%水位變化%壩坡%穩定性
유한원분석%강도절감%수위변화%패파%은정성
finite element analysis%strength reduction%variation of water level%dam slope%stability
以某加固后的堆石坝工程为例，采用有限元强度折减法，研究了在不同水位组合和坝顶通车条件下的坝坡稳定性。计算结果表明：高水位对应侧的坝坡稳定性相对较高；水位越低，上下游水位差越大，坝坡的安全系数越大，反之则越小；坝顶通车对坝坡的稳定性不利，尤其是水位组合173.67～143.30 m 和152.00～167.30 m时；该堆石坝在加固后的坝坡稳定性系数基本满足相关规范要求，最小安全系数出现在水位组合152.00～167.30 m时的上游坝坡，此时坝坡属于稳定状态，但安全储备较小。
以某加固後的堆石壩工程為例，採用有限元彊度摺減法，研究瞭在不同水位組閤和壩頂通車條件下的壩坡穩定性。計算結果錶明：高水位對應側的壩坡穩定性相對較高；水位越低，上下遊水位差越大，壩坡的安全繫數越大，反之則越小；壩頂通車對壩坡的穩定性不利，尤其是水位組閤173.67～143.30 m 和152.00～167.30 m時；該堆石壩在加固後的壩坡穩定性繫數基本滿足相關規範要求，最小安全繫數齣現在水位組閤152.00～167.30 m時的上遊壩坡，此時壩坡屬于穩定狀態，但安全儲備較小。
이모가고후적퇴석패공정위례，채용유한원강도절감법，연구료재불동수위조합화패정통차조건하적패파은정성。계산결과표명：고수위대응측적패파은정성상대교고；수위월저，상하유수위차월대，패파적안전계수월대，반지칙월소；패정통차대패파적은정성불리，우기시수위조합173.67～143.30 m 화152.00～167.30 m시；해퇴석패재가고후적패파은정성계수기본만족상관규범요구，최소안전계수출현재수위조합152.00～167.30 m시적상유패파，차시패파속우은정상태，단안전저비교소。
This article takes reinforced rock -fill dam engineering as an example and adopts the strength re‐duction FEM method to study the stability of dam slope under the condition of different water levels and o‐pening traffic on the crest .The calculation results show that the stability of high water level's corresponding side of the dam slope is relatively higher ;the lower the water level and the bigger of stage differences of up‐stream and dow nstream ,the greater the safety coefficient of dam slope .Conversely ,the stability of dam slope is poor ;when the water level's combination arrives at 173 .67 m to 143 .30 m and 152 .00 m to 167 .30 m ,o‐pening to traffic on the crest is adverse to the stability of the dam slope ;the stability coefficient of the rock -fill dam after the reinforcement satisfies the basic requirements of the relevant specification .The minimum safety factor appears at the upstream when the water level combination is from 152 .00 m to 167 .30 m and the dam slope is in a stable state at this time .However ,the safety stock is in an insufficient state .
