成南路K28滑坡整治措施的研究

STUDY ON REMEDY ENGINEERING OF K28 LANDSLIDE OF CHENGDU—NANCHONG HIGHWAY

成南高速公路K28是地表汇水面积大、岩体破碎、强度低的滑坡地段,在这种不良地质地段修建以半挖半填为主的高边坡路基工程,工程难度很大。在分析滑坡成因的基础上,提出了防排水、清方减载、填方反压、设置埋入式抗滑桩、抗滑挡墙以及坡面植被防护等综合整治措施。现场监测数据及试验结果,特别是工程实践的检验都表明这种综合整治措施效果很好,为不良地质区在滑坡地段修建半挖半填的高边坡路基工程提供了很好的工程实例。

K28 area of Chengdu—Nanchong highway is locaded in the landslide section,where the rockmass behaves like fragmentation with low strength and more ground surface water. The construction of the roadbed encountered difficulties resulting from the bad condition. The reason of landslide formation is analyzed,and the comprehensive remedy techniques for landslide control are put forward,which include drainage of surface water,anti-slide piles,anti-slide walls,and bio-engineering for improving the slope stability. The landslide is well controlled after reinforcement with these remedy techniques.