宝天高速公路K83+650~K84+100段滑坡稳定性分析与治理

Stability Analysis and Control of K83+650~K84+100 Sections of Baotian Expressway Landslide

通过分析宝天高速公路K83+650~K84+100段滑坡的变形特征,依据现场勘探的资料,采用传递系数法和不平衡推力法计算了该段滑坡的稳定系数和滑坡推力。计算结果表明,在天然和天然+暴雨两种工况下该段滑坡浅层滑坡处于欠稳定状态,深层滑坡处于基本稳定的状态,在综合分析滑坡特征、地层岩性和施工条件的基础上,制定了削方减载+桩板墙+截排水的具体治理措施。

Through the analysis of highway K83+650~K84 treasure day+100 section of the landslide deformation characteristics on the basis of field exploration data and the transfer coefficient method and imbalance thrust method to calculate the segment and stability coefficient of landslide thrust,it is shown that under these two kinds of condition of natural and natural+heavy rains,this shallow landslide is in unstable state and deep landslide is in a state of stable.Through the comprehensive analysis of landslide characteristics as well as formation lithology and construction conditions,"cut the lightening+slab-pile wall+drain"treatment measure is established.