深基坑与边坡支护工程变形超过报警值的原因及对策

REASONS AND COUNTERMEASURES AGAINST DEFORMATION EXCEEDING ALARM VALUE IN DEEP FOUNDATION PIT AND SIDE SLOP SUPPORT PROJECT

昆明某基坑支护工程实施过程中,局部软弱土区域发生竖向位移及水平位移超过报警值的情况。针对险情分析症结,采取坑顶卸载、坑脚堆土反压、松弛锚索补偿张拉等措施,使基坑变形超报警值的区域转为趋稳状态,确保了基坑安全。

During construction of a foundation pit support project in Kunming,there was vertical displacement at local weak soil stratum and horizontal displacement exceeded the alarm value.Considering these risks,this paper analyzed relevant reasons and countermeasures,such as unloading at foundation pit top,soil counter pressing at foundation pit bottom and stretching compensation for loose anchor cable,etc.,to turn the area where foundation pit deformation exceeded the alarm value into a stable condition and to guarantee the foundation pit safety.