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Vertical shaft difference freezing device

A differential freezing and shaft technology, applied in shaft equipment, sinking, mining equipment, etc., can solve the problems of long freezing period of rock and soil, affecting the progress of the project, etc., and achieve the goal of improving the effective utilization rate, prolonging the residence time, and improving the freezing efficiency Effect

Inactive Publication Date: 2017-06-27
淄博九合矿业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the freezing method is applied to the shaft engineering to freeze the rock and soil, it usually takes 50 to 60 days. The freezing period of the rock and soil is very long, which affects the progress of the project to a certain extent.

Method used

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  • Vertical shaft difference freezing device

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Embodiment Construction

[0017] Embodiments of the present invention are further described below in conjunction with accompanying drawings:

[0018] Such as figure 1 As shown, the shaft differential freezing device of the present invention comprises an inner tube 2 and an outer tube 4, and the outer tube 4 is sleeved outside the inner tube 2, increasing the outer diameter of the middle part of the outer tube 4, so that the outer diameter of the middle part of the outer tube 4 The outer diameter is greater than the outer diameter of its upper and lower parts, and the outer circumference of the upper and lower parts of the outer tube 4 (i.e. the small part of the outer tube 4 outer diameter) is wrapped with an insulating layer 5, and the outer diameter of the insulating layer 5 is the same as the outer diameter of the outer tube 4 (i.e. Outer tube 4 outside diameter small part) has the same outer diameter; The top of inner tube 2 has freezing liquid liquid inlet 1, and its bottom is open and height is h...

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Abstract

The invention belongs to the field of underground engineering construction auxiliary devices, and particularly relates to a vertical shaft difference freezing device. The vertical shaft difference freezing device comprises an inner pipe and an outer pipe, the inner pipe is sleeved with the outer pipe, and the outer diameter of the middle of the outer pipe is increased, so that the outer diameter of the middle of the outer pipe is larger than that of the upper portion and that of the lower portion of the outer pipe, the periphery of the upper portion and the periphery of the lower portion of the outer pipe are coated with a heat preserving layer, and the outer diameter of the heat preserving layer is equal to that of the middle of the outer pipe; a freezing liquid inlet is formed in the top of the inner pipe, and a flow channel communicated with the outer pipe is formed in the lower portion of the inner pipe; the top and the bottom of the outer pipe are closed, and a freezing liquid returning opening is formed in the upper portion of the outer pipe. Difference freezing is carried out on underground rock soil, cold source isolation is carried out on the region which is small in water content and dispenses with freezing, cold source consumption is reduced, the use ratio of a cold source is increased, for the region with the large underground water content, the contact area of the outer pipe is increased, the freezing liquid dwell time is prolonged, the rock soil freezing time is shortened, freezing efficiency is improved, and the underground rock soil freezing effect is improved.

Description

technical field [0001] The invention relates to a shaft differential freezing device, which belongs to the field of auxiliary devices for underground engineering construction. Background technique [0002] The freezing method is often used in shaft engineering. It is a method of artificial refrigeration, which freezes the water in the loose water-bearing rock and soil around the underground space to be excavated into ice and cements it with the rock and soil to form frozen soil. Resist earth pressure, isolate groundwater, and carry out underground engineering construction under the protection of frozen soil. However, when the freezing method is applied to the shaft engineering to freeze the rock and soil, it usually takes 50 to 60 days. The freezing period of the rock and soil is very long, which affects the progress of the project to a certain extent. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficie...

Claims

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Application Information

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IPC IPC(8): E21D1/14
CPCE21D1/14
Inventor 石建新王向宏李滋峰王苇崔荣贵田成东路连营崔云德郭传军王传兵陈贵明郑立杰王乐边运强段世波
Owner 淄博九合矿业有限公司
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