Construction method for underground continuous wall below ultra-wide pipeline

Abstract

The invention discloses a construction method for an underground continuous wall below an ultra-wide pipeline. The construction method includes the steps that according to the category of the ultra-wide pipeline incapable of being moved and modified, a pipeline protecting body is arranged around the ultra-wide pipeline so that the ultra-wide pipeline can be conveniently enveloped and protected; after the ultra-wide pipeline is enveloped and protected, the soil mass below the ultra-wide pipeline is excavated through a long-arm excavator; after the soil mass below the ultra-wide pipeline is excavated, the rest of soil mass or rock mass below the ultra-wide pipeline is drilled through a non-balanced drilling method so that an underground continuous wall groove segment below the ultra-wide pipeline can conveniently form a groove; and after the underground continuous wall groove segment below the ultra-wide pipeline forms the groove, three reinforcement cages are downwards arranged in the groove so that one of the three reinforcement cages can be conveniently located under the ultra-wide pipeline. According to the method, the groove is formed through the non-balanced drilling method, the reinforcement cages are downwards arranged in the manner that one groove is provided with the three cages, the engineering quality is guaranteed, the engineering progress is accelerated, and the moving and modifying cost is saved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for an underground connection wall under an ultra-wide pipeline. Background technique [0002] In the urban living area or commercial area where there are many underground pipelines, when the ground connection wall of the foundation pit enclosure structure is constructed, it is often encountered that the pipeline group obliquely crosses or crosses the ground connection wall. These pipelines cannot be relocated or relocated. Therefore, when faced with these pipelines, the plan of not relocating is usually adopted, and the construction of the ground connection wall is completed under the pipeline. [0003] However, using the above method, the pipelines are usually ordinary pipelines with a width less than the diameter of the drill bit when drilling (usually the pipeline width is less than 20cm), and the method of one slot and two cages is adop...

AI Technical Summary

Problems solved by technology

However, the above method is not suitable for the ultra-wide pipeline whose width is greater than the diameter of the drill bit when drilling (the width of the ultra-wide pipeline is about 120cm). The method cannot be implemented under the influence of the ultra-wide pipeline, and the excavation and reverse construction method cannot guarantee the continuity of the ground connection wall under the ultra-wide pipeline, and there are potential safety hazards, which will cause other secondary problems later, such as during the excavation process. Water seepage affects construction safety, increases construction difficulty, and prolongs construction period

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