山区公路嵌入型危石稳定性分析
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摘要
嵌入型危石在山区公路边坡广泛发育,严重影响了山区公路边坡的稳定性。根据嵌入型危石的受力情况建立了危石稳定性分析的力学模型,运用极限平衡理论建立了稳定性分析方法,受力比较明确,所需要的计算参数较少。以国道316某处边坡嵌入型危石为实际算例,计算结果表明该方法能基本反映嵌入型危石的实际稳定状况。
Being wide distributed,the embedded critical rocks affect the stability of the slope along highway in mountainous area.The mechanical model of the critical rock is established based on its force condition.On the basis of limit equilibrium theory a stability analysis method which has the advantages of stressing definite and less calculation parameters is established.Taking the critical rock of the slope along national highway 316 as practical calculation example,the results show that the established stability analysis method can basically reflect the real stability state of the embedded critical rock.
Being wide distributed,the embedded critical rocks affect the stability of the slope along highway in mountainous area.The mechanical model of the critical rock is established based on its force condition.On the basis of limit equilibrium theory a stability analysis method which has the advantages of stressing definite and less calculation parameters is established.Taking the critical rock of the slope along national highway 316 as practical calculation example,the results show that the established stability analysis method can basically reflect the real stability state of the embedded critical rock.
引文
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[2]ZHENG Hong,ZHOU ChuangBing.Global analysis onslope stability and its engineering application[J].Technological Sciences,2009,2(3):507-512.
[3]李清徕.山区公路滑坡构成及防治措施[J].交通科技与经济,2009,11(3):87-91.
[4]苏永华,伍文国,李志勇,等.极限平衡模式下的边坡稳定概率小样本最优拟合算法[J].岩石力学与工程学报,2009,28(1):173-180.
[5]Lysandros Pantelidis.Rock slope stability assessmentthrough rock mass classification systems[J].Interna-tional Journal of Rock Mechanics&Mining Sciences,2009,(46):315-325.
[6]Paul M Santi,Christopher P Russell.Modification andstatistical analysis of the Colorado Rockfall HazardRationSystem[J].Engineering Geology,2009,104:55-65.
[7]郑智能,张永兴,董强,等.边坡落石灾害的颗粒流模拟方法[J].中国地质灾害与防治学报,2008,19(3):46-49.
[8]陈洪凯,唐红梅,鲜学福,等.川藏公路四川段泥石流灾害研究与治理[J].防灾减灾工程学报,2009,29(2):126-132.
[9]陈洪凯,唐红梅,陈野鹰.公路泥石流力学[M].北京:科学出版社,2007.
[10]Paul M Santi,Christopher P Russell,Jerry D Hig-gins,Jessica I Spriet.Modification and statisticalanalysis of the Colorado Rockfall Hazard Ration Sys-tem[J].Engineering Geology,2009,104:55-65.
[11]兰昌义,赵其华.基于GIS的某边坡崩塌落石运动特征分析[J].四川地震,2009,(1):32-36.
[12]郭梅,姜仁安.坡面冲刷的临界坡度的计算分析[J].吉林建筑工程学院院报,2008,25(1):60-62.
[13]Zhu D Y,Qian Q H.Rigorous and quasi-rigorouslimit equilibrium solutions of 3D slope stability andapplication to engineering[J].Chin J Rock Mech Eng,2007,26(8):1513-1528.
[14]Zheng H,Tham L G,Liu D F.A slice-free method forstability analysis of slopes(in Chinese)[J].Rock SoilMech,2007,28(7):1285-1291.
[15]王连捷,等.用有限元极限平衡法分析边坡的稳定性[J].中国地质,2008,35(5):1031-1036.
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