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Circumferentially compressible composite well wall and construction method thereof

A shaft wall and circumferential technology, which is applied in the field of vertical shaft, roadway and cavern, to achieve the effect of improving utilization rate, uniform distribution of tangential stress and reducing project cost

Active Publication Date: 2011-04-13
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even with this single-layer shaft wall structure and the strength of C100 high-strength concrete, the thickness of the shaft wall will exceed 3m for super-large-diameter, ultra-deep shafts

Method used

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  • Circumferentially compressible composite well wall and construction method thereof
  • Circumferentially compressible composite well wall and construction method thereof

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Embodiment Construction

[0010] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings:

[0011] The circumferentially shrinkable composite well wall of the present invention is mainly composed of a reinforced concrete outer well wall 1, an inner well wall 2 and a compressible barrier 3, wherein the compressible barrier 3 is arranged along the shaft axis and can be compressed The barrier 3 is provided in the inner well wall 2. According to the actual situation of the site, at least one compressible barrier 3 may be provided, or 2, 3, or 4 may be provided. figure 1 Shown are 4 bars. The compressible interlayer 3 is a compressible structure formed by one, two or more of foam board, steel, wood, and rubber, and its compression rate is not less than 20%,

[0012] The construction method of the circumferentially compressible composite shaft wall of the present invention: the water-proof curtain is formed by the freezing method around the shaft, and ...

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Abstract

The invention provides a circumferentially compressible composite well wall and a construction method thereof which are most applicable to improving the bearing capability of a vertical well wall. The composite well wall comprises a waterproof outer well wall and a circumferentially compressible inner well wall; and the inner wall is provided with at least one compressible insulating layer. In the construction method, firstly, the waterproof outer well wall is built from top to bottom according to the section height; then the inner wall embedded with the compressible insulating layer is built from bottom to top; and finally the wall is built to the designed height according to the section height. When water and soil pressure effects surrounding the composite well wall, the compressible insulating layer of the inner well wall is compressed for yielding pressure so as to enable the stress to be distributed more evenly along the radial direction of the well wall, thus effectively improving the bearing capability of the well wall, effectively reducing the thickness of the existing well wall, improving the utilization ratio of the shaft section, and reducing the engineering cost to a large extent.

Description

Technical field [0001] The invention relates to a circumferentially compressible composite shaft wall and a construction method thereof, and is particularly suitable for vertical shaft shafts that penetrate deep and thick stratum, and also suitable for roadways and caverns that bear relatively large ground pressure. Background technique [0002] In order to exploit deep mineral resources, more and more mine shafts need to pass through deep topsoil or pore water-bearing soft rock by freezing method. Correspondingly, due to the increase of water and soil pressure around the shaft wall, the shaft wall becomes thicker and thicker. Excessively thick shaft walls not only lead to a sharp rise in sinking costs and a doubled construction period, but also face serious temperature cracks in large-volume concrete. Radial penetrating temperature cracks will make it difficult for the shaft wall to meet the design requirements. Therefore, how to reduce the thickness of the well wall reasonably ...

Claims

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Application Information

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IPC IPC(8): E21D5/11E21D11/10
Inventor 杨维好黄家会任彦龙
Owner CHINA UNIV OF MINING & TECH
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