Reconstructed well wall of closed or abandoned mine shaft and construction technology of reconstructed well wall

A technology for shaft wall and mine, which is applied in the field of shaft wall reconstruction and its construction technology, can solve the problems of difficult to meet the wellbore development and utilization, shaft wall cracking, low strength, etc., to ensure stability, low engineering cost, and short construction period. Effect

Pending Publication Date: 2022-02-15
BEIJING CHINA COAL MINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to provide a closed or abandoned mine shaft reconstruction shaft wall and its construction technology to solve the problems caused by the existing shaft wall cracking, water permeability, carbonization, and low strength of the closed or abandoned mine shaft. Difficult to meet the functional requirements of wellbore redevelopment and utilization

Method used

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  • Reconstructed well wall of closed or abandoned mine shaft and construction technology of reconstructed well wall
  • Reconstructed well wall of closed or abandoned mine shaft and construction technology of reconstructed well wall
  • Reconstructed well wall of closed or abandoned mine shaft and construction technology of reconstructed well wall

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Embodiment 1

[0057] A rebuilt shaft wall for a closed or abandoned mine shaft, a shaft wall body 30 and a shaft wall bottom 10; the upper part of the shaft wall bottom 10 is a straight shaft wall section, the lower part is a hollow hemispherical shaft wall bottom, and the outer part of the straight shaft wall section diameter is equal to the ball diameter at the bottom of the hollow hemispherical well wall; the well wall body 30 is straight, and the outer diameter of the well wall body 30 is equal to the outer diameter of the straight well wall section; the bottom of the well wall body 30 is the same as the straight well wall section The top is fixedly connected and fluidly connected.

[0058] Well wall body 30 comprises 9 well wall sections 17, such as figure 1 As shown, the shaft wall joint 17 includes the shaft wall concrete 5, the shaft wall inner steel plate 31, the shaft wall outer steel plate 33, the shaft wall joint steel bar 28, the shaft wall joint upper flange 3 and the shaft wa...

Embodiment 2

[0070] Such as Figure 7 and Figure 8 Shown, a closed or abandoned mine shaft wall rebuilding construction process, including the following steps:

[0071] (1) Remove the equipment installed in the closed or abandoned mine shaft shaft, and install a lifting system at the closed or abandoned mine shaft shaft; the lifting system is a gantry crane, and the present embodiment adopts a gantry crane;

[0072](2) According to the structural requirements of the closed or abandoned mine shaft shaft, the rebuilt shaft wall 18 of the closed or abandoned mine shaft shaft as described in embodiment 1 is prefabricated on the ground; in this embodiment, the shaft wall section 17 and the shaft wall bottom 10 are The ground is prefabricated in advance, and the prefabricated shaft wall section 17 and shaft wall bottom 10 can adapt to the lifting capacity of the gantry crane;

[0073] (3) Concrete is used to block the bottom roadway of the closed or abandoned mine shaft; the plugging between ...

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Abstract

The invention discloses a reconstructed well wall of a closed or abandoned mine shaft and a construction technology of the reconstructed well wall. The reconstructed well wall comprises a well wall body and a well wall bottom; the upper portion of the well wall bottom is a straight well wall section, the lower portion of the well wall bottom is a hollow hemispheroid well wall bottom, and the outer diameter of the straight well wall section is equal to the sphere diameter of the hollow hemispheroid well wall bottom; the well wall body is in a straight cylinder shape, and the outer diameter of the well wall body is equal to the outer diameter of the straight cylinder well wall section; and the bottom of the well wall body is fixedly connected with the top of the straight well wall section and is in fluid conduction with the straight well wall section. The construction process comprises the following steps: (1) installing a lifting system at the mouth of a closed or abandoned mine shaft; (2) prefabricating the reconstructed well wall on the ground; (3) blocking the shaft bottom roadway of the vertical shaft through concrete; (4) injecting suspension liquid into the shaft; and (5) sinking the reconstructed well wall to a set depth by adopting a suspension sinking process. The method has the advantages of unmanned and mechanized well wall reconstruction in the well, and has the advantages of convenience and safety in construction, low construction cost, short construction period and the like.

Description

technical field [0001] The invention relates to the technical field of mine shaft wall reconstruction. Specifically, it is a rebuilt shaft wall of a closed or abandoned mine shaft and its construction technology. Background technique [0002] With the continuous development of mine underground resources and the implementation of the overcapacity reduction policy, the mines with exhausted resources and outdated production capacity have been accelerated to close, resulting in a large number of closed or abandoned mines. However, the redevelopment and utilization of closed or abandoned mines as special underground spaces has important practical significance for transformational development and sustainable development. [0003] After the resource mining cycle of the mine is over, the underground goaf of the mine collapses and the roadway in the mining area is deformed and damaged by the overlying rock movement caused by mining, making it more difficult to develop and utilize it...

Claims

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Application Information

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IPC IPC(8): E21D5/04E21D5/06E21D5/11E21D5/12
CPCE21D5/04E21D5/06E21D5/11E21D5/12
Inventor 宋朝阳刘志强谭杰宁方波王媛
Owner BEIJING CHINA COAL MINE ENG CO LTD
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