架空线路杆塔基础滑坡机理分析及防控技术措施

Mechanism Analysis and Prevention and Control Measures for Landslide of Overhead Line Tower Foundation

针对近年来架空输电杆塔基础滑坡隐患频发的情况,对以表层土质滑坡为代表的滑坡机理进行分析,并结合大量的工程案例和治理经验,提出做好截排水、边坡防护及妥善处置施工弃土3方面的预防措施建议,能在一定程度上规避滑坡隐患。最后,针对常见的3种不同程度的滑坡隐患,提出锚杆铁丝网喷射混凝土、覆盖包塑网+复绿、削坡+坡脚挡土墙+锚杆+格梁+格梁间砼板支护3种边坡治理措施,因地制宜实施边坡隐患治理,确保输电线路安全可靠稳定运行。

In response to the frequent occurrence of landslide hazards in the foundation of overhead transmission towers in recent years,the landslide mechanism represented by surface soil landslides is analyzed.Based on a large number of engineering cases and governance experience,suggestions for preventive measures in three aspects:good interception and drainage,slope protection,and proper disposal of construction waste have been proposed.To some extent,it is necessary to avoid landslide hazards without taking precautions.Finally,in response to the common three different degrees of landslide hazards,three slope control measures were proposed:anchor wire mesh shotcrete,covering with plastic mesh and greening,slope cutting and retaining wall at the foot of the slope,anchor rod and grid beam,and concrete plate support between grid beams.Implement slope hazard management according to local conditions.Ensure the safe,reliable and stable operation of transmission line equipment.