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Artificial digging repair novel construction method for collapse ultra-deep shaft

A shaft and artificial technology, applied in shaft equipment, shaft lining, mining equipment, etc., can solve problems such as economic losses, and achieve the effect of speeding up construction progress, ensuring construction quality, and ensuring construction safety.

Active Publication Date: 2009-04-01
WUHAN SURVEYING GEOTECHN RES INST OF MCC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, this technology is only in the preliminary stage in China. After the collapse of the mine, some construction units have to learn from the pain, re-select the site to build the mine, and relocate or update the mine equipment, causing great economic losses.

Method used

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  • Artificial digging repair novel construction method for collapse ultra-deep shaft
  • Artificial digging repair novel construction method for collapse ultra-deep shaft

Examples

Experimental program
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Embodiment Construction

[0019] according to figure 1 , figure 2 As shown, a new artificial excavation repair method for collapsed ultra-deep shafts, the steps are as follows:

[0020] (1) According to the designed diameter, excavate a deep pit of 1.0-1.4m;

[0021] (2) Install the steel formwork, the formwork is spliced ​​with bolts, the angle steel part is fully welded on one side, the outside of the steel formwork is provided with hanging ribs, and the second mold is excavated after pouring C30 wall protection concrete;

[0022] (3) After the excavation size of the second mold meets the requirements, and before pouring the retaining wall concrete, at least 2 steel bars are welded on the inner side of each steel formwork side wall of the previous mold, the length of which is L=1150-1500mm, and the other end extends into the The outer side of the steel formwork of the second formwork is to be poured at the retaining wall, and the C30 retaining wall concrete is poured to the top of the steel formwo...

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Abstract

The invention relates to a novel working method for the manual advancing and restoration of a collapsed ultra-deep vertical shaft, which comprises the steps of advancing, installing templates, installing concrete reinforcing bars, pouring concrete, installing anchor rods, installing Mn steel protective canisters and pouring concrete. The method has the advantages of adopting the advancing proposal of the steel templates plus reinforced concrete lining plus the anchor rods plus the Mn steel protective canisters, integrating three in one, not only ensuring construction safety, but also having remarkable effects on construction schedule, being capable of applying successful experience to the project management to complicated rock mass similar to vertical shafts or faults, water-eroded caves, quicksand and the like, speeding up construction and reducing project investment; the technology is only at the development stage in China, shortens construction period greatly, raises the safety factor of workers in the well and ensures the construction quality of the vertical shaft.

Description

technical field [0001] The invention relates to the technical field of mine exploration, in particular to a new manual excavation repair method for collapsed ultra-deep shafts. Background technique [0002] At present, most domestic mines often adopt the mine transportation method of vertical shaft + adit, which is fast, economical and has low transportation risk. In the process of shaft exploration and design, we are often cautious, and generally choose better formations. In the use of large-diameter shafts, collapse and blockage occur, and the number is even rarer. However, with the development of the country's economy and the increasingly developed technologies, in order to reduce project investment and later operating costs, the construction unit will still select sites and build wells in locations with relatively poor geological conditions. Various negative factors such as unreasonable use in the later stage provided conditions for the collapse and damage of the shaft...

Claims

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Application Information

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IPC IPC(8): E21D5/11E21D5/12
Inventor 颜克诚占仲国邱进锋陈哲俊詹建华万凯军魏帮明桂志勇
Owner WUHAN SURVEYING GEOTECHN RES INST OF MCC
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