水文地质工程地质
水文地質工程地質
수문지질공정지질
HYDROGEOLOGY AND ENGINEERING GEOLOGY
2009年
6期
114-117,122
,共5页
梁燕%李同录%李萍%陶福平
樑燕%李同錄%李萍%陶福平
량연%리동록%리평%도복평
三峡水库%黄金分割优化方法%库岸滑坡预测%稳定性%孔隙水压力
三峽水庫%黃金分割優化方法%庫岸滑坡預測%穩定性%孔隙水壓力
삼협수고%황금분할우화방법%고안활파예측%은정성%공극수압력
Three Gorges Reservoir%the Golden-Split method%forecast of landslide in the reservoir region%stability%the pore water pressure
对三峡库区归州老滑坡在库水位从175m下降到145m过程的滑坡稳定性进行研究,通过黄金分割方法优化计算时步,利用MIDAS/GTS有限元软件分析了库水位下降时岸坡内孔隙水压力的变化及由此引起的岸坡稳定性变化,确定了库水位下降量与库岸斜坡稳定安全系数的关系,结果表明:将优化方法用到库岸斜坡稳定性分析中,可提高计算效率;在库水位下降过程中,斜坡的稳定安全系数不是单调降低,而存在一个极小值;三峡库区归州老滑坡基本稳定.
對三峽庫區歸州老滑坡在庫水位從175m下降到145m過程的滑坡穩定性進行研究,通過黃金分割方法優化計算時步,利用MIDAS/GTS有限元軟件分析瞭庫水位下降時岸坡內孔隙水壓力的變化及由此引起的岸坡穩定性變化,確定瞭庫水位下降量與庫岸斜坡穩定安全繫數的關繫,結果錶明:將優化方法用到庫岸斜坡穩定性分析中,可提高計算效率;在庫水位下降過程中,斜坡的穩定安全繫數不是單調降低,而存在一箇極小值;三峽庫區歸州老滑坡基本穩定.
대삼협고구귀주로활파재고수위종175m하강도145m과정적활파은정성진행연구,통과황금분할방법우화계산시보,이용MIDAS/GTS유한원연건분석료고수위하강시안파내공극수압력적변화급유차인기적안파은정성변화,학정료고수위하강량여고안사파은정안전계수적관계,결과표명:장우화방법용도고안사파은정성분석중,가제고계산효솔;재고수위하강과정중,사파적은정안전계수불시단조강저,이존재일개겁소치;삼협고구귀주로활파기본은정.
The stability of the old landslide of Guizhou in the Three Gorges region during reservoir water level drawdown from 175 to 145m is studied. Using the Golden-Split method to optimize the calculating process, the stability of the old landslide of Guizhou during reservoir water level drawdown is analyzed in combination of the pore water pressures calculated from the transient seepage analyses by using the finite element software MIDAS/GTS. Through numerical calculation, the relationships between the landslide stability and the reservoir water level drawdown are obtained. The results show that the old landslide of Guizhou is stable during the reservoir water level drawdown from 175 to 145m. It is effective to apply Golden-Split method to the analysis of landslide stability on a reservoir region. A minimum value of the safety coefficient of landslide exists, which does not singly reduce with reservoir water level drawdown.