Waterproof well wall compressible device and construction process thereof

A construction process and well wall technology, which is applied in vertical shaft equipment, well sinking, wellbore lining, etc., can solve the problems of reduced compression ratio of retractable devices, failure to achieve the designed compression ratio, complex stress of retractable devices, etc. The effect of compression space utilization rate, compression ratio improvement, and prevention of well wall rupture disasters

Active Publication Date: 2017-06-27
CHINA UNIV OF MINING & TECH
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Problems solved by technology

The design compression rate of the existing collapsible device is very high. Due to the complex force of the collapsible device, it is easily constrained by the outer well wall, so that the actual compressibility of the collapsible device is reduced, and the design compressibil

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  • Waterproof well wall compressible device and construction process thereof
  • Waterproof well wall compressible device and construction process thereof
  • Waterproof well wall compressible device and construction process thereof

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[0018] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0019] Figure 1 to Figure 4 A water-proof shaft wall shrinkable device in which is installed at the joint of the inner shaft wall of a composite concrete shaft wall. The shrinkable device includes a circular annular U-shaped steel structure, a circular ring support plate and a compressible The filler 8, the compressible filler 8...

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Abstract

The invention discloses a waterproof well wall compressible device and a construction process thereof. The contractible device comprises an annular U-shaped steel structure, a circular ring supporting plate and compressible fillers. The annular U-shaped steel structure is constituted by head-tail connection of a plurality of U-shaped steel structure arc sections. The circular ring supporting plate is further formed by head-tail connection of a plurality of arc-shaped supporting plate bodies and fixedly connected to the inner side of the opening end of the annular U-shaped steel structure. A cavity formed between the annular U-shaped steel structure and the circular ring supporting plate is filled with the compressible fillers. The structure is simple; construction is convenient; airtightness is good; the compression ratio is high, working performance is reliable, the engineering cost and engineering construction difficulty can be effectively reduced; and quite wide practicability in the technical field is achieved.

Description

technical field [0001] The invention relates to a waterproof shaft wall retractable device and a construction process thereof, which are suitable for the inner shaft wall of a double-layer concrete composite shaft wall of a vertical shaft constructed by freezing method. Background technique [0002] As the mining depth continues to deepen, more and more mine shafts need to use the freezing method to pass through the deep topsoil layer or porous soft rock layer. The vertical force is applied to the wellbore, resulting in wellbore damage engineering accidents. [0003] In order to solve the problem of wellbore damage caused by surface subsidence, predecessors developed a variety of retractable devices. When the vertical stress of the well wall is greater than the vertical load allowed by the design of the well wall, the retractable device will produce vertical compression deformation and release Excessive vertical force on the shaft wall keeps the vertical stress of the shaft...

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Application Information

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IPC IPC(8): E21D7/00E21D5/11E21D1/12
CPCE21D1/12E21D5/11E21D7/00
Inventor 任彦龙周来应杨维好张全全
Owner CHINA UNIV OF MINING & TECH
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