Sequential supporting structure system of soil vertical shaft and construction method

Abstract

The invention discloses a sequential supporting structure system of a soil vertical shaft and a construction method. The sequential supporting structure system of the soil vertical shaft and the construction method are reliable in technical scheme, simple in construction, low in investment and capable of effectively realizing safe and efficient excavation of a large-section soil vertical shaft. The structure system comprises a vertical shaft wall, a forepoling structure, a construction period supporting structure and a reinforced concrete shaft wall structure; the forepoling structure comprises a plurality of grouting steel pipe piles arranged around the outer side of the vertical shaft wall; the construction period supporting structure comprises a reinforcing mesh, profile steel walling cribs, supporting anchor rods and a concrete spraying layer, the reinforcing mesh is laid on the inner wall face of the vertical shaft wall, the plurality of profile steel walling cribs are evenly arranged on the inner side of the vertical shaft wall in the longitudinal direction, and the supporting anchor rods are evenly arranged in the longitudinal direction and the circumferential direction of the vertical shaft wall; the inner wall face of the vertical shaft wall is provided with the concrete spraying layer which enables the closed reinforcing mesh, the profile steel walling cribs and the supporting anchor rods to form a whole; and the reinforced concrete shaft wall structure is poured on the inner side face of the concrete spraying layer.

Description

technical field [0001] The invention relates to a sequential support structure system and a construction method for earth shafts, which are suitable for the construction of earth shafts in infrastructure-related industries such as transportation, municipal administration, railway, water conservancy and hydropower. Background technique [0002] Shaft excavation is a common construction process in the infrastructure industry. During the excavation of soil shafts, the self-stabilization time of the soil is short and the stability is poor. Especially for large-section soil shafts, the safety and stability of the excavation process cannot be ignored, and engineering measures need to be taken in a targeted manner. Contents of the invention [0003] The present invention aims to overcome the deficiencies in the prior art system, such as the short self-stabilization time and poor stability of the soil during the excavation process of the soil shaft, and the relatively large safety...

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Problems solved by technology

[0003] The present invention aims to overcome the deficiencies in the prior art system, such as the short self-stabilization time and poor stability of the soil during the excavation process of the soil shaft, and the relatively large safety and stability problems of excavation construction, and provide a reliable technical solution and convenient construction. It is simple, saves investment, and can effectively realize the safe and efficient excavation of large-section soil shafts. A sequential support structure system and construction method for soil shafts

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