降雨—变形耦合预警模型在荔景山庄边坡的应用
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摘要
针对城市边坡开挖引发滑坡地质灾害给人民的生命和财产造成不可弥补的伤害的问题,本文建立了荔景山庄边坡的降雨—变形耦合预警模型。首先通过调查工程的位置交通情况以及地质环境特征,利用Geostudio软件模拟降雨入渗和变形情况,对边坡潜在变形机制进行了分析,并且根据四色预警指标分别建立了降雨预警模型和位移切线角模型,从而建立安全有效的降雨变形耦合预警模型,这将对其他地区边坡预警模型的建立具有指导意义。
Aiming at the problem of irreparable damage to people's lives and property caused by landslide geological hazards caused by urban slope excavation, this paper mainly studies the establishment of a rainfall-deformation coupling early warning model of Lijing hill slope. Firstly, the potential deformation mechanism of slope is analyzed by investigating the traffic situation and geological environment characteristics and using Geostudio software to simulate rainfall infiltration and deformation. Then, according to the four-color warning index, the rainfall early warning model and displacement tangent angle model are established respectively. This will be of guiding significance to the establishment of early warning model of slope in other areas.
Aiming at the problem of irreparable damage to people's lives and property caused by landslide geological hazards caused by urban slope excavation, this paper mainly studies the establishment of a rainfall-deformation coupling early warning model of Lijing hill slope. Firstly, the potential deformation mechanism of slope is analyzed by investigating the traffic situation and geological environment characteristics and using Geostudio software to simulate rainfall infiltration and deformation. Then, according to the four-color warning index, the rainfall early warning model and displacement tangent angle model are established respectively. This will be of guiding significance to the establishment of early warning model of slope in other areas.
引文
[1] 成国文,李晓,许家美等.重庆涪陵五中滑坡特征及成因分析[J].工程地质学报,2009,17(2):220-227.
[2] 曾铃,李光裕,史振宁等.前期降雨对非饱和覆盖层边坡性状及稳定性的影响[J].中南大学学报(自然科学版),2018,49(1):238-246.
[3] 王述红,何坚,杨天娇.考虑降雨入渗的边坡稳定性数值分析[J].东北大学学报(自然科学版),2018,39(8):1196-1200.
[4] CAREY J M,PETLEY D N.Progressive shear-surface development in cohesive materials,implications for landslide behavior[J].Engineering Geology,2014,177(14):54-65.
[5] 唐栋,李典庆,周创兵,等.考虑前期降雨过程的边坡稳定性分析[J].岩土力学,2013,34(11):3239-3248.
[6] 费雷德隆德 D.G,拉哈尔佐 H.非饱和土力学[M].陈仲颐,译.北京:中国建筑工程出版社,1997.
[7] RICHARDS L A.Capillary conduction of liquids through porous medium[J].Journal of Physics,1931,1(5):318-333.
[8] FREDLUND D G,MORGENSTERN N R,WIDGER R A.Shear strength of unsaturated soils[J].Canadian Geotechnical Journal,1978,15(3):313-321.
[9] VANAPALLI S K,FREDLUND D G.Comparison of different procedures to predict unsaturated soil shear strength[J].Geotechnical Special Publication,2000,287(99):195-209.
[10] ESCARIO V,JUCA J,COPPE M S.Strength and deformation of party saturated soils[C]// Proceedings of the 12th International Conference on Soil Mechanics and Foundation Engineering.Riode Janerio,Brazil:IEEE,1989:43-46.
[11] JOHN K.Geo-slope International Ltd.Stability modeling with slope/W2007 version[R].Calgary,Canada:Geo-slope International Ltd,2008:315-331.
[2] 曾铃,李光裕,史振宁等.前期降雨对非饱和覆盖层边坡性状及稳定性的影响[J].中南大学学报(自然科学版),2018,49(1):238-246.
[3] 王述红,何坚,杨天娇.考虑降雨入渗的边坡稳定性数值分析[J].东北大学学报(自然科学版),2018,39(8):1196-1200.
[4] CAREY J M,PETLEY D N.Progressive shear-surface development in cohesive materials,implications for landslide behavior[J].Engineering Geology,2014,177(14):54-65.
[5] 唐栋,李典庆,周创兵,等.考虑前期降雨过程的边坡稳定性分析[J].岩土力学,2013,34(11):3239-3248.
[6] 费雷德隆德 D.G,拉哈尔佐 H.非饱和土力学[M].陈仲颐,译.北京:中国建筑工程出版社,1997.
[7] RICHARDS L A.Capillary conduction of liquids through porous medium[J].Journal of Physics,1931,1(5):318-333.
[8] FREDLUND D G,MORGENSTERN N R,WIDGER R A.Shear strength of unsaturated soils[J].Canadian Geotechnical Journal,1978,15(3):313-321.
[9] VANAPALLI S K,FREDLUND D G.Comparison of different procedures to predict unsaturated soil shear strength[J].Geotechnical Special Publication,2000,287(99):195-209.
[10] ESCARIO V,JUCA J,COPPE M S.Strength and deformation of party saturated soils[C]// Proceedings of the 12th International Conference on Soil Mechanics and Foundation Engineering.Riode Janerio,Brazil:IEEE,1989:43-46.
[11] JOHN K.Geo-slope International Ltd.Stability modeling with slope/W2007 version[R].Calgary,Canada:Geo-slope International Ltd,2008:315-331.