CAJ | 학술논문

湖南省西部地区高速公路路线红层滑坡灾害普遍存在.根据湘西某高速公路朱雀洞段滑坡的工程地质特性、形态、结构特征及变形破坏特征,分析了滑坡的形成机制,指出其属滑移一拉裂型滑坡.在经受自重应力、降雨以及地下水等内外作用因素,斜坡岩体沿软弱结构面发生滑移变形,随着剪裂面上的拉应力集中而产生拉裂缝,一旦破坏面贯通,则导致滑坡破坏.通过参数反演,对滑坡的稳定性进行了定量评价.从评价结果可见,在天然情况下,滑坡处于稳定状态.而在暴雨情况下,其稳定性迅速降低,基本处于不稳状态.在分析成因机制的基础上为滑坡的整治对策提供了重要的依据.
호남성서부지구고속공로로선홍층활파재해보편존재.근거상서모고속공로주작동단활파적공정지질특성、형태、결구특정급변형파배특정,분석료활파적형성궤제,지출기속활이일랍렬형활파.재경수자중응력、강우이급지하수등내외작용인소,사파암체연연약결구면발생활이변형,수착전렬면상적랍응력집중이산생랍렬봉,일단파배면관통,칙도치활파파배.통과삼수반연,대활파적은정성진행료정량평개.종평개결과가견,재천연정황하,활파처우은정상태.이재폭우정황하,기은정성신속강저,기본처우불은상태.재분석성인궤제적기출상위활파적정치대책제공료중요적의거.
Red beds landslides hazards are widely distributed in expressways of west of Hunan Province.According to analysis of the landslide s engineering geology character,conformation,construction characteristics and landslide' s deformation character,the formation mechanism of the landslide is analyzed.It shows that the landslide belongs to slidingbending type.Suffering from gravitation,rainfall and groundwater action etc.,the slope slides along the weak structural surface,and the cracks occour with the draught stress concentration.Once the breakage surface is transfixed,the slope will slide down.By parameter anti deducing,the stability of the landslide is evaluated quantitatively.It comes to the conclusion that under natural circumstance,the landslide is always in the stable state,while in the rain-storm circumstance,its stability falls quickly to be unsteady state.On the base of studying its formation mechanism,this process provides important geological basis for landslide treatment measure.