Over-excavation collapse-prevention elevator foundation pit slope construction technology: Fid-Bau Portal

Over-excavation collapse-prevention elevator foundation pit slope construction technology

WANG CHENGJIN

The construction technology comprises the following steps that during elevator foundation pit construction, a working face is formed through segmented and layered excavation from top to bottom, mechanical dynamic compaction is conducted on log piles when excavation is conducted to the position of the elevator foundation pit, it is guaranteed that the lower ends of the log piles penetrate into soil below the elevator foundation pit by no less than 5 m, and the working face is formed; according to the design, the elevator foundation pit can be effectively prevented from collapsing, and a certain shielding effect of a waterproof curtain is achieved, so that the construction safety of the elevator foundation pit is guaranteed.

本发明公开了一种超挖防坍塌电梯基坑边坡施工工艺包括如下步骤，电梯基坑施工时，自上而下分段、分层开挖形成工作面，在开挖至电梯基坑位置，进行机械强夯原木桩，保证原木桩下端深入电梯基坑下土深不少于5米，并与边坡锚杆进行有效拉结，形成整体，该设计能够有效防止电梯基坑发生坍塌，并起到一定的止水帷幕的屏障作用，从而保证电梯基坑的施工安全。

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