华北水利水电大学学报（自然科学版）
華北水利水電大學學報（自然科學版）
화북수이수전대학학보（자연과학판）
Journal of North China University of Water Resources and Electric Power
2015年
5期
67-70
,共4页
GEO-Slope/W软件%土质高边坡%稳定安全系数%临界滑动面
GEO-Slope/W軟件%土質高邊坡%穩定安全繫數%臨界滑動麵
GEO-Slope/W연건%토질고변파%은정안전계수%림계활동면
GEO-Slope/W%high soil slope%stability coefficient%critical slip surface
GEO-Slope/W软件可综合考虑地下水、土体裂缝、坡顶堆载等因素,能够对复杂土层、任意滑动面形状及多种孔隙水压力状况建立二维计算模型分析边坡的稳定性.本文以河南航空港区某一老旧办公区域的土质高边坡为例,通过对任意形状滑动面的计算假设,设定滑动坡面为自由边界、底部为固定约束边界、四周为自由边界来建立滑坡计算模型,选取两个典型边坡剖面,分析其在自然状态和饱和状态下的最危险滑动面、对应滑动圆心以及相应的最小稳定安全系数.结果表明:边坡在饱和状态下的稳定系数比自然状态下的降低了0. 10~0. 11,验证了含水量的增加对土质边坡的稳定性影响较大的结论;模拟分析得典型坡面的最大稳定系数为0. 84,远小于滑坡允许稳定系数1. 2~1. 3,说明该边坡处于极不稳定状态,与现场勘查情况相吻合.另外,提出采用混凝土挡墙加喷锚支护提高土体抗滑力,防止雨水对坡体的浸润破坏;或用削坡、人工植草、浆砌石防护坡脚等措施来减轻坡体荷载,保持边坡稳定.
GEO-Slope/W軟件可綜閤攷慮地下水、土體裂縫、坡頂堆載等因素,能夠對複雜土層、任意滑動麵形狀及多種孔隙水壓力狀況建立二維計算模型分析邊坡的穩定性.本文以河南航空港區某一老舊辦公區域的土質高邊坡為例,通過對任意形狀滑動麵的計算假設,設定滑動坡麵為自由邊界、底部為固定約束邊界、四週為自由邊界來建立滑坡計算模型,選取兩箇典型邊坡剖麵,分析其在自然狀態和飽和狀態下的最危險滑動麵、對應滑動圓心以及相應的最小穩定安全繫數.結果錶明:邊坡在飽和狀態下的穩定繫數比自然狀態下的降低瞭0. 10~0. 11,驗證瞭含水量的增加對土質邊坡的穩定性影響較大的結論;模擬分析得典型坡麵的最大穩定繫數為0. 84,遠小于滑坡允許穩定繫數1. 2~1. 3,說明該邊坡處于極不穩定狀態,與現場勘查情況相吻閤.另外,提齣採用混凝土擋牆加噴錨支護提高土體抗滑力,防止雨水對坡體的浸潤破壞;或用削坡、人工植草、漿砌石防護坡腳等措施來減輕坡體荷載,保持邊坡穩定.
GEO-Slope/W연건가종합고필지하수、토체렬봉、파정퇴재등인소,능구대복잡토층、임의활동면형상급다충공극수압력상황건립이유계산모형분석변파적은정성.본문이하남항공항구모일로구판공구역적토질고변파위례,통과대임의형상활동면적계산가설,설정활동파면위자유변계、저부위고정약속변계、사주위자유변계래건립활파계산모형,선취량개전형변파부면,분석기재자연상태화포화상태하적최위험활동면、대응활동원심이급상응적최소은정안전계수.결과표명:변파재포화상태하적은정계수비자연상태하적강저료0. 10~0. 11,험증료함수량적증가대토질변파적은정성영향교대적결론;모의분석득전형파면적최대은정계수위0. 84,원소우활파윤허은정계수1. 2~1. 3,설명해변파처우겁불은정상태,여현장감사정황상문합.령외,제출채용혼응토당장가분묘지호제고토체항활력,방지우수대파체적침윤파배;혹용삭파、인공식초、장체석방호파각등조시래감경파체하재,보지변파은정.
The GEO-Slope/W program can establish a two-dimensional calculation model, which can comprehensively consider many factors of the groundwater, soil cracks, slope top preloading and many conditions of complex soil layer, arbitrary slip surface shape and a variety of pore water pressure, to analyze the slope stability. In this paper, taking an example of a high soil slope in the old office area in Henan airport, through the calculation of any shape of the sliding surface, the set of the sliding slope as the free boundary, the bottom as the fixed constraint boundary, and all around as the free boundary, a landslide calculation model is established. Further-more, two typical slope sections are selected to analyze the most dangerous sliding surface, the corresponding slide center and the cor-responding minimum stability coefficient under the natural state and saturated state. The results show that the safety factor of slope undersaturated state is lower than that of natural state by 0. 10~0. 11, which indicates that the increase of water content has a great influence on the stability of soil slope, and the maximum stability factor of the typical slope is 0. 840, which is far less than its safety range from 1. 2 to 1. 3, which indicates that the slope is in a very unstable state, coincided with the scene investigation. In addition, a new concrete retaining wall with anchor supporting technology is proposed to improve the soil at the foot of the anti slide force to prevent rain on slope infiltration and destruction;or some other measures, such as cutting slope, artificial grass, masonry slope foot slope and so on, also can reduce the slope load to keep the slope stability.
