水闸连接段岸坡临时开挖稳定分析

Stability Analysis of the Temporary Slope Excavation of the Sluice Connection Section

北河桥闸重建工程是在旧闸原址重建。右岸链接段岸坡的地质钻孔资料揭露存在软弱土层,经过施工期的稳定计算,不能满足规范要求。考虑到右岸链接段岸坡临时边坡开挖受到场地的限制,采取其他加固防护措施已经没有条件,在迫不得已的情况下,利用现有岸坡稳定的状况,采取对滑动土层c、φ值的反演推算,来重新分析临时边坡开挖的稳定状况。工程实际施工与演算结果符合,工程顺利完工,对临时边坡开挖工程有一定的参考作用。

The bridge sluice reconstruction project of North River is rebuilt on the former site. Geological borehole data reveal the existence of soft soil layer, based on the stability calculation of construction period, cannot meet the requirements of the specification. The site of temporary side slope excavation is restricted on the right bank, where there is no room to take other protective measures without reinforcement conditions. The inversion calculation of geological parameters is conducted on the existing slope stability condition, and the stability of the temporary slope excavation is analyzed. The actual construction of the project is in line with the calculation results, and the project is completed on schedule. The study may serve as certain reference for temporary slope excavation project.