某主干路K2+240~485右侧滑坡变形机制与治理方案

Deformation mechanism and treatmentschemes of the right landslide ona certain trunk road K 2+240~485

某主干路K2+240~K2+485右侧边坡于2022年3月22日出现整体滑移,已完成的边坡拱形骨架和锚杆框架梁损坏。为查明滑坡变形原因及确保施工顺利进行,通过组织专家多次(5次)现场踏勘、结合前期勘察报告资料等查明滑坡变形原因为:地表水渗透是滑坡变形及发生滑动的直接诱发因素,地层岩性(昔格达地层岩体风化裂隙发育、破碎,在暴晒下易开裂,遇水作用下易软化)、地形地貌(边坡高、陡)、人类工程活动(开挖边坡、锚杆施工)等因素也影响着滑坡的稳定性。针对滑坡的物质特征、变形特征和稳定性计算结果,采用刷方清除破碎岩体、锚杆框架护坡、设置排水沟的治理措施对边坡进行治理。

On March 22,2022,the slope at the right side of K2+240~K2+485 of a certain trunk road slipped as a whole,and the completed slope arch skeleton and anchor frame beam were damaged.In order to find out the causes of landslide deformation and ensure the smooth progress of construction,it is found out by organizing experts to conduct on-site survey and combining the data in the preliminary survey report that the causes of landslide deformation are found out.Surface water infiltration is a direct inducing factor for landslide deformation and sliding.Formation lithology(weathered fissures of rock mass of the Xigeda strata are developed and broken,easy to crack under the sun,and easy to soften under the action of water),landform(high and steep slope),human engineering activities(slope excavation,anchor frame beam construction)and other factors also affect the stability of the landslide.According to the material characteristics,deformation characteristics and stability calculation results of the landslide,the treatment measures of brushing and removing broken rock mass and anchor frame slope protection are adopted to treat the slope.