Sequential supporting structure system of soil vertical shaft and construction method

A technology for supporting structures and shafts, which is used in shaft equipment, earth-moving drilling, wellbore lining, etc., can solve the problems of short self-stabilization time and poor stability of soil, save construction procedures, enhance integrity, increase Effects of stiffness and strength

Pending Publication Date: 2021-06-11
POWERCHINA HUADONG ENG COPORATION LTD
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  • Abstract
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  • Claims
  • Application Information

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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 cons

Method used

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  • Sequential supporting structure system of soil vertical shaft and construction method
  • Sequential supporting structure system of soil vertical shaft and construction method

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[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Such as figure 1 , figure 2 As shown, the sequencing support structure system of the soil shaft of the present invention includes the shaft wall 1 of the excavation shaft 10, and the outer side of the shaft wall 1 is arranged, the outer support structure is arranged surrounds the inner shaft wall 1. Structure, and reinforced concrete well wall structure 2.

[0026] The superior support structure includes several grouting steel pipe piles 3 arranged outside the shaft wall 1. The pile body of the grouting steel pipe pile 3 presets exudated holes, and the gas-proof 8 is formed by grouting in the grouting steel pipe pile 3. The grouting steel pipe pile 3 is provided with a locking well 9 connected to all grouting steel pipe piles 3. The grouting steel pipe pile 3 extends downwards and is inclined from 1 to 2 degrees to the outer side of the shaft ...

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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...

Claims

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Application Information

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IPC IPC(8): E21D5/11
CPCE21D5/11
Inventor 鲍利发陈鹏吴喜艳
Owner POWERCHINA HUADONG ENG COPORATION LTD
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