Supporting method for primary support of underground excavated chamber

A technology of underground caverns and support methods, which is applied to underground caverns, pillars/brackets, earthwork drilling and mining, etc., and can solve problems such as numerous construction procedures and long construction periods

Active Publication Date: 2014-02-19
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to this method, there are many con...

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  • Supporting method for primary support of underground excavated chamber
  • Supporting method for primary support of underground excavated chamber
  • Supporting method for primary support of underground excavated chamber

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing (taking a node at the bottom in the section of the underground cavern).

[0019] Description of components and material numbers in the attached drawings:

[0020] 1. For temporary steel support, I-beam can be used;

[0021] 2. Rectangular steel pipe;

[0022] 3. Steel backing plate;

[0023] 4. Temporary support steel end plate;

[0024] 5. Light and cheap materials, plastic foam products can be used;

[0025] 6. Initial support steel frame (grid arch frame) for initial support lining;

[0026] 7. Waterproof layer;

[0027] 8. Longitudinal distribution reinforcement in the secondary lining;

[0028] 9. The main reinforcement in the secondary lining;

[0029] 10. Secondary lining concrete;

[0030] 11. The waterproof layer covered by rectangular steel pipes poured with concrete;

[0031] 12. Reinforcement welded with secondary lining main reinforcement and distributed ...

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Abstract

The invention discloses a supporting method for a primary support of an underground excavated chamber. The supporting method for the primary support of the underground excavated chamber comprises A, arranging rectangular steel pipes inside the underground excavated chamber, inserting profile steel into the rectangular steel pipes and connecting the rectangular steel pipes with a primary supporting steel frame through steel base plates; B, paving a water proof layer on a whole section of the primary support after sectional primary supports of the underground chamber section are formed into a cross-shaped temporary steel support; C, colligating secondary lining reinforcing bars, reserving construction space for a rear covered water proof layer on the peripheries of the rectangular steel pipes and pouring concrete to form into an underground chamber full-section reinforced concrete structure; D, pulling out the temporary supporting profile steel in the rectangular steel pipes, pouring concrete inside the steel pipes and covering the water proof layer; E, pouring concrete in the reserved construction space of the rear covered water proof layer. The supporting method for the primary support for the underground excavated chamber has the advantages of being few, rapid and simple in construction process and saving construction periods.

Description

technical field [0001] The invention relates to the field of underground cavern construction, in particular to a support method for the initial support of underground caverns. Background technique [0002] Under the condition that temporary support is required for the initial support of underground caverns that require outsourcing waterproofing, the secondary lining concrete pouring generally needs to replace the temporary support. The basic process and method of the secondary reinforced concrete lining construction are described below by taking the "ten"-shaped temporary steel support as an example for the initial support: [0003] After the initial support and "ten"-shaped temporary steel support for an underground cavern with a horseshoe-shaped or approximately rectangular section is completed, the "ten"-shaped temporary steel support divides the section into four areas: upper, lower, left, and right. On this basis, the steps to implement the secondary concrete lining a...

Claims

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Application Information

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IPC IPC(8): E21D15/02E21D11/38
Inventor 薛勇
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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