Method for chiseling mid-partition of underground engineering group pit

Abstract

The invention discloses a method for chiseling a mid-partition of an underground engineering group pit. The method comprises the following steps: (1) dividing a to-be-chiseled part of the mid-partition and a reserved part of the mid-partition; (2) partitioning the to-be-chiseled part of the middle-partition, chiseling the partitioned middle-partition, and reserving a temporarily reserved part of the middle-partition between the two partitioned blocks in the chiseling process; (3) after chiseling of the partitioned mid-partition is completed, building a permanent constructional column between the mid-partition of the foundation pit; (4) after the construction of the constructional column is completed, chiseling away the temporarily reserved part of the middle-partition; and (5) after the to-be-chiseled part of the middle-partition is completely chiseled, cleaning waste concrete slag, and conducting post-cast strip construction. According to the method for chiseling the mid-partition ofthe underground engineering group pit, in the construction process, the temporary part of the mid-partition is reserved to serve as a temporary bearing structure in the construction process, and safety in the construction process can be well guaranteed. In the chiseling process, the quality of a chiseled hole can be well controlled, and the construction efficiency is high.

Description

technical field [0001] The invention relates to the field of underground engineering building construction, in particular to a method for chiseling partition walls in underground engineering group pits. Background technique [0002] In recent years, more and more cities have begun to build subways, and the structure of subway stations has become more complex. The proportion of group pits in station foundation pits has gradually increased. Under the condition that the construction technology of single foundation pits is becoming more mature and perfect, optimizing the underground The construction technology of group pits in the project is particularly important. Among them, the partition wall is one of the parts in the group foundation pit project that is different from the single foundation pit project. Part of the partition wall in the group pit will be cut off in the later stage of foundation pit construction to serve as a gap between various parts of the station during th...

AI Technical Summary

Problems solved by technology

However, in foundation pit engineering with complex geological conditions and low internal structure strength, this method is easy to cause damage to the internal structure of the foundation pit, and complex reinforcement and protection measures are often required

However, in the current methods of chiseling partition walls in group pits, few involve how to safe and efficient chiseling methods

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