某老滑坡场地二次勘察与治理分析

Analysis of Secondary Survey and Treatment of an Old Landslide Site

文中以某滑坡场地为例,通过二次勘察,查明老滑坡的空间分布和规模,推定滑坡发生前地表形态及滑移过程,明确新、老滑坡体之间的空间位置关系及相互影响。场地处于欠稳定-不稳定状态,为此,文中提出三套治理比选方案,根据场地现状,结合治理难度、成本及治理后的可靠性,最终采用整体卸荷+坡面防护的治理方案。

Taking landslide site as an example,this paper identifies the spatial distribution and scale of old landslide through secondary sur-vey,presumes the possible surface morphology and sliding process before landslide,and defines the spatial position relationship and mutual in-fluence between new and old landslide.The site is in an unstable to unstable state,so three sets of treatment schemes are proposed.According to the current situation of the site,combined with treatment difficulty,cost and reliability after treatment,the overall unloading+slope protec-tion treatment scheme is finally adopted.