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Underground cavern high-strength supporting structure

A technology for supporting structures and underground caverns, applied in mining equipment, earthwork drilling, installation of bolts, etc., can solve problems such as deformation and collapse of arches, and achieve the effects of improving strength, low cost and high production efficiency

Pending Publication Date: 2018-09-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a high-strength support structure for underground caverns, which solves the problem of abutment deformation and collapse caused by stress concentration in the construction of existing underground caverns

Method used

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  • Underground cavern high-strength supporting structure
  • Underground cavern high-strength supporting structure
  • Underground cavern high-strength supporting structure

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Embodiment Construction

[0021] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0022] Such as Figure 1 ~ Figure 3 As shown, the high-strength support structure of the underground cavern includes an internal pressure plate 11 and an anchor cable 2 perpendicular to the normal direction of the reinforced surface in the main cavern 1 . The pressure plate 11 in the hole adopts a steel plate with a thickness of not less than 8 centimeters, and its size is determined according to the area to be reinforced, ...

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Abstract

The invention provides an underground cavern high-strength supporting structure, and relates to the technical field of hydraulic and hydropower engineering. The strucutre comprises an in-cavern pressing plate and an anchor cable, wherein the in-cavern pressing plate is perpendicular to the normal direction of a reinforced face in a main cavern, one end of the anchor cable is fixedly connected to the in-cavern pressing plate, and the other end of the anchor cable is fixed to force application equipment in an auxiliary cavern; the force application equipment generates adjustable tenjsion for theanchor cable, the position of the auxiliary cavern corresponds to that of the main cavern, and the anchor cable is perpendicular to the in-cavern pressing plate. The problem that in existing underground cavern construction, an arch support is deformed and collapses due to stress concentration is solved.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a high-strength support structure for underground caverns. Background technique [0002] The hydropower resources being developed or to be developed in my country are mainly located in the southwestern alpine and valley areas on the eastern edge of the Qinghai-Tibet Plateau. Due to the influence of neotectonic movements, the in-situ stress in this area is generally high. Among the large underground powerhouses built in the past ten years, the ones with the maximum in-situ stress exceeding 30MPa successively include Ertan, Xiaowan, Guandi, Jinping Level 1, Houziyan, Baihetan, etc., which ensure the safety of the construction period and the long-term stability of the factory buildings. brought adverse effects. After the excavation of underground caverns, the confining pressure on the surrounding rock changes sharply, the direction and magnitude...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00
CPCE21D20/00Y02E10/20
Inventor 张建海汪贤良周钟廖成刚何建华罗涛梁军
Owner SICHUAN UNIV