Extradeep well bottom ore fine recycling shaft and fast construction supporting method thereof

A technology for ultra-deep wells and fine ore, which is used in shaft equipment, well sinking, mining equipment, etc., can solve problems such as collapse, shaft wall, affecting safe and stable operation, etc., to enhance strength, ensure stable operation, and improve operating environment. Effect

Active Publication Date: 2017-01-04
YUNNAN CHIHONG ZINC & GERMANIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to factors such as high stress, high confining pressure, and high ground temperature brought about by the ultra-deep environment, as well as unfavorable conditions such as rockbursts and water disasters caused by this, often wall fragmentation and collapse will occur during the construction of the fine ore recovery system. and other accidents, and affect the safe and stable operation in the later period. Therefore, it is urgent to provide a fine ore recovery shaft that can be quickly and safely constructed in this special environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The powder ore recovery shaft at the bottom of the ultra-deep shaft includes a lining board 1, welding studs 2, surrounding rock 3, and a concrete support layer 4. The lining board 1 is arranged inside the surrounding rock 3, and the welding studs 2 are evenly arranged in a staggered manner. On the outer wall of the liner 1, welding studs 2 and the liner 1 are connected by welding; there is a pouring gap between the liner 1 and the surrounding rock 3, and the gap between the liner 1 and the surrounding rock 3 is poured with Concrete support layer 4; when the surrounding rock 3 is under-excavated h 2 , the relationship between the length L of the welding stud 2 and the thickness D of the concrete support layer 4 is D=L+h 1 , reserve undercut thickness h 2 It is to ensure that when the surrounding rock 3 is under-excavated, the welding stud 2 still has the concrete protective layer thickness h required by the specification 1 , to ensure the support strength of the ultra...

Embodiment 2

[0035] The powder ore recovery shaft at the bottom of the ultra-deep shaft includes a lining board 1, welding studs 2, surrounding rock 3, and a concrete support layer 4. The lining board 1 is arranged inside the surrounding rock 3, and the welding studs 2 are evenly arranged in a staggered manner. On the outer wall of the liner 1, welding studs 2 and the liner 1 are connected by welding; there is a pouring gap between the liner 1 and the surrounding rock 3, and the gap between the liner 1 and the surrounding rock 3 is poured with Concrete support layer 4. When there is no under-excavation in the surrounding rock 3, the relationship between the length L of the welding stud 2 and the thickness D of the concrete support layer 4 is D=L+h 1 + h 2 , the thickness of the concrete support layer 4 is expanded to enhance the support strength of the ultra-deep shaft bottom powder ore recovery shaft, to ensure that the surrounding rock 3 can work stably, and to ensure the stable operati...

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PUM

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Abstract

The invention relates to an extradeep well bottom ore fine recycling shaft and a fast construction supporting method thereof, and belongs to the technical field of ore fine recycling engineering construction. The extradeep well bottom ore fine recycling shaft comprises a lining plate, welding studs, surrounding rock and a concrete supporting layer. The lining plate is fixed into the surrounding rock, serves as a temporary protection measure for the surrounding rock at the earlier stage and also serves as a later concrete pouring formwork, and the welding studs are connected with the lining plate and used for enabling the lining plate and concrete to form a whole; a pouring clearance of certain thickness is reserved between the lining plate and the surrounding rock, and the concrete is poured into the clearance to serve as a permanent supporting measure of the extradeep well bottom ore fine recycling shaft. A shaft wall can be fast supported, the working environment can be improved, the strength of a supporting body can be enhanced, and stable operation of the surrounding rock can be ensured.

Description

technical field [0001] The invention belongs to the technical field of powder ore recovery engineering construction, and in particular relates to a powder ore recovery vertical shaft at the bottom of an ultra-deep shaft and a rapid construction support method thereof. Background technique [0002] There is a problem of ore and fine ore scattering in the lifting of shaft skips. After years of practice, it has been proved that although corresponding technical measures are taken in design and management is strengthened in production, the amount of fine ore scattered can only be reduced, and fine ore scattering cannot be avoided. occurrence of falling. The fine ore recovery method needs to be combined with the mine development method. Currently, there are three fine ore recovery methods: auxiliary shaft recovery, inclined shaft recovery and small shaft recovery. The shaft recovery method has the characteristics of small engineering quantity and short construction period, and is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D8/00E21D5/00E21D5/12E21D5/04E21D1/06
CPCE21D1/06E21D5/00E21D5/04E21D5/12E21D8/00
Inventor 严庆文陆跃邦李国清朱家锐彭天松滕高礼周关虎黎飞孙超李春祥张泽裕杨海辉毛明发
Owner YUNNAN CHIHONG ZINC & GERMANIUM CO LTD
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