Supporting structure of underground plant floor slab and construction method

A technology for supporting structures and underground powerhouses, applied to underwater structures, infrastructure engineering, artificial islands, etc., can solve the problems of increasing the excavation span of the powerhouse, occupying space for columns, increasing project investment, etc. The effect of digging span, increasing the stability of surrounding rock, and saving engineering investment

Inactive Publication Date: 2012-10-17
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional underground factory floor is supported on the concrete column or brick column structure. The setting of the column occupies a certain space. In order to meet the needs of the mechanical and electrical equipment layout, it is necessary to increase the excavation span of the factory building.
The increase of the excavation span will not be conducive to the stability of the surrounding rock of the underground powerhouse cavern group, and will increase the amount of excavation and support works, prolong the construction period, and increase the project investment

Method used

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  • Supporting structure of underground plant floor slab and construction method
  • Supporting structure of underground plant floor slab and construction method

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but not as any limitation to the present invention.

[0024] A support structure for the floor slab of an underground workshop, such as figure 1 and figure 2 shown. It includes an anchor beam 2 fixed on the rock wall 1 of an underground powerhouse through an anchor. The anchor rods include cable-stayed anchor rods 5 and shear anchor rods, and the shear anchor rods include horizontal shear anchor rods 6 and diagonal brace shear anchor rods 7; the inclination angle of the cable-stayed anchor rods 5 and the horizontal plane are 15° ~30°; and the distance from the rock wall to the top surface of the anchor beam is 10-20cm. The inclination angle of the diagonal brace shear anchor 7 is the same as that of the bottom surface of the anchor beam 2; and the height from the bottom of the anchor beam 2 is 10-20 cm; The shear bolts are arranged at...

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Abstract

The invention discloses a supporting structure of an underground plant floor slab and a construction method. The supporting structure comprises an anchor rod beam (2), wherein the anchor rod beam (2) is fixed on an underground plant rock wall (1) through an anchor rod and is connected with a secondary beam (3), and a floor slab (4) is arranged on the anchor rod beam (2) and the secondary beam (3) respectively. According to the supporting structure of the underground plate floor slab, disclosed by the invention, the floor slabs and the secondary beam are directly and fixedly supported on the anchor rod beam of the underground plant rock wall, and supporting beams of an underground plant and pillars of the floor slabs are omitted so that the excavation span of the underground plant can be effectively reduced, the stability of surrounding rocks is improved, the excavation supporting engineering amount of a hole chamber can be reduced, and the engineering investment is saved.

Description

technical field [0001] The invention relates to a supporting structure and a construction method of an underground workshop floor, and belongs to the technical field of construction engineering of an underground workshop. Background technique [0002] In hydropower projects, underground powerhouse caverns have many caverns, large scale, interlaced and complex spatial layout, and the stability of the surrounding rock of the caverns is outstanding. The size of the excavation span of the powerhouse is still sensitive to the stability of the surrounding rock. The floor slabs of traditional underground workshops are supported on concrete columns or brick columns. The setting of columns occupies a certain space. In order to meet the needs of mechanical and electrical equipment layout, the excavation span of the workshop must be increased. The increase of the excavation span will not be conducive to the stability of the surrounding rock of the cavern group of the underground powerh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045
Inventor 宋静郑治宁华晚吴正新陈本龙刘恩举周小乾曾树元
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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