反倾岩质边坡稳定性分析
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摘要
反倾岩质边坡是我国大型水利枢纽、高速公路(铁路)工程、矿山工程建设过程中常见的一种层状岩质边坡。本文提出了反倾岩质边坡的稳定性评价方法,确定了破坏基准面。以嘎夏帕滑坡作为工程实例,利用所提出的计算公式进行了稳定性评价,讨论了不同破裂角条件下滑坡的破坏特征。实例分析表明:岩层力学参数对岩层稳定性产生影响,破裂角对岩层岩块的应力影响明显;存在结构面使得边坡更倾向于向结构面方向产生破坏。
Anti-toppling rock slope is a common layered rock slope in the process of construction of largescale water control project,highway( railway) project and mine engineering in China. Paper first puts forward the tilting rock slope stability evaluation method and determines the datum. Besides,taking Gaxiapa landslide of as an example,paper carries out the stability evaluation making use of the proposed calculation formula and discusses the characteristics of different rupture angle of landslide. Research shows that: the rock mechanics parameters effect on the stability of rock and the rupture angle of strata of rock stress effect is obvious; there is structural plane makes the slope is more inclined to cause damage to the structural plane direction.
Anti-toppling rock slope is a common layered rock slope in the process of construction of largescale water control project,highway( railway) project and mine engineering in China. Paper first puts forward the tilting rock slope stability evaluation method and determines the datum. Besides,taking Gaxiapa landslide of as an example,paper carries out the stability evaluation making use of the proposed calculation formula and discusses the characteristics of different rupture angle of landslide. Research shows that: the rock mechanics parameters effect on the stability of rock and the rupture angle of strata of rock stress effect is obvious; there is structural plane makes the slope is more inclined to cause damage to the structural plane direction.
引文
[1]谭儒蛟,杨旭朝,胡瑞林.反倾岩体边坡变形机制与稳定性评价研究综述[J].岩土力学,2009,30(Z2):479-485.
[2]ADSL.阿尔伯塔自然灾害景观-弗兰克山体滑坡[EB/OL].[S.l]:[s.n.],2005.
[3]三峡指挥部.崩滑地质灾害与防治-黄蜡石[EB/OL].[S.l]:[s.n.],2008.
[4]韩贝传,王思敬.边坡倾倒变形的形成机制与影响因素分析.工程地质学报,1999.9,7(3):213-217
[5]TALOBRA J,La mecanique des rockes appliquée auxtravaux publics[R].Paris,Dunod,1957.
[6]MULER L,New consideration of the Vajont slide[J].Felsmechnik und Ingenieur geologie1968,6:29-91.
[7]FREITAS D M H,WATTERS R J.Some field examples of toppling failure[J].Geotechnique,1973,23(4):495-514.
[8]GOODMAN R E.Methods of geological engineering in discontinuous rocks[M].Minnesota:West Publishing Co.,1976.
[2]ADSL.阿尔伯塔自然灾害景观-弗兰克山体滑坡[EB/OL].[S.l]:[s.n.],2005.
[3]三峡指挥部.崩滑地质灾害与防治-黄蜡石[EB/OL].[S.l]:[s.n.],2008.
[4]韩贝传,王思敬.边坡倾倒变形的形成机制与影响因素分析.工程地质学报,1999.9,7(3):213-217
[5]TALOBRA J,La mecanique des rockes appliquée auxtravaux publics[R].Paris,Dunod,1957.
[6]MULER L,New consideration of the Vajont slide[J].Felsmechnik und Ingenieur geologie1968,6:29-91.
[7]FREITAS D M H,WATTERS R J.Some field examples of toppling failure[J].Geotechnique,1973,23(4):495-514.
[8]GOODMAN R E.Methods of geological engineering in discontinuous rocks[M].Minnesota:West Publishing Co.,1976.