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Comprehensive quantitative design method for circular water-passing tunnel lining structure

A design method and lining technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as rough evaluation standards, complex geological conditions, non-uniformity, etc., to improve accuracy and economy, and simplify design. During the verification process, ensure the effect of the design

Pending Publication Date: 2021-10-15
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] For the analytical method according to the specification, its technical disadvantages are as follows: for the lining to bear its own weight, internal water pressure, external water pressure, and mountain rock pressure at the same time, there is currently no recommended analytical calculation method for the standard method; in the actual construction process, the gap between the lining and the surrounding rock There are gaps, which have a great influence on the stress of the lining, and the standard method cannot consider the impact of the gaps; the geological conditions encountered by the tunnel are very At that time, there is no recommended analytical calculation method in the standard method
[0010] For the calculation method based on the finite element method, its technical disadvantages are as follows: the evaluation criteria for the tunnel lining design using the finite element calculation method are relatively rough, specifically, it depends on whether the first principal stress and the third principal stress of the lining structure meet the specifications For the limit value standard of the lining structure, it is impossible to quantitatively evaluate how to determine the key reinforcement amount and whether the crack development meets the standard limit value; the current finite element method is still in the manual operation stage, and the efficiency is low

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  • Comprehensive quantitative design method for circular water-passing tunnel lining structure
  • Comprehensive quantitative design method for circular water-passing tunnel lining structure
  • Comprehensive quantitative design method for circular water-passing tunnel lining structure

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specific Embodiment

[0074] The lining design method is mainly based on the finite element calculation principle and the lining design standard proposed by the code.

[0075] Hydrogeological data, as the basic data of any design work, has been provided by the professional work of the previous stage, and this data has been obtained when the lining design work is carried out. Through hydrogeological data, the surrounding rock pressure, internal water pressure, external water pressure of the lining structure, and the initial gap between the lining and the surrounding rock can be preliminarily obtained. For example, the construction gap is often considered as 0.2mm. At this stage, the limit value standard for lining crack development is also determined. If there is a fault, the structural parameters and physical and mechanical parameters of the fault are also determined.

[0076] It should be noted:

[0077] ① The construction gap is considered to be 0.2mm, which is the suggested value of the specifi...

Embodiment 1

[0104] The purpose of the present invention is to propose a new technical method for lining design and standardize tunnel lining design by integrating finite element calculation means and normative analysis methods. Specifically, the technical problems to be solved in the present invention are: ①When the lining structure bears the superimposed combination of self-weight, internal water pressure, external water pressure, and mountain rock pressure, quantitative design calculation can still be carried out according to this method; ②Design analysis Quantitatively consider the gap between the lining and the surrounding rock; ③When the tunnel encounters a fault obliquely, this method can still be used for quantitative design analysis; ④Using this method, the finite element calculation results can be further used in conjunction with the lining reinforcement design , crack quantitative analysis combined. By solving the above technical problems, the accuracy and economy of tunnel lini...

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Abstract

The invention discloses a comprehensive quantitative design method, particularly discloses a comprehensive quantitative design method for a circular water-passing tunnel lining structure, and belongs to the technical field of water conservancy and hydropower engineering building design processes. According to the comprehensive quantitative design method for a lining structure of a circular water-passing tunnel, accurate and efficient design of the lining structure of the water-passing tunnel can be conveniently achieved, the design verification process is simplified, and the design is guaranteed to meet the requirement. The comprehensive quantitative design method at least comprises the following steps: establishing a comprehensive quantitative design platform, preliminarily drawing up lining parameters on the comprehensive quantitative design platform according to existing hydrogeological data, calling a finite element calculation program to complete finite element calculation, and judging whether the preliminarily-drawn lining parameters meet design achievement requirements or not according to a finite element calculation result.

Description

technical field [0001] The invention relates to a comprehensive quantitative design method, in particular to a comprehensive quantitative design method for the lining structure of a circular water passage tunnel, and belongs to the technical field of water conservancy and hydropower engineering building design technology. Background technique [0002] the term [0003] Tunnel: Excavated in the mountain or underground during the project, it is used for water delivery, power generation, irrigation, flood discharge, diversion, venting, sand discharge and other water passages with closed sections. [0004] Hydraulic tunnel: a channel with a closed section that is installed in the rock (soil) body in hydropower and water conservancy projects, and is used for water delivery, power generation, irrigation, flood discharge, diversion, venting, sand discharge, etc. [0005] Tunnel lining: In underground engineering, in order to strengthen the surrounding rock or level the flow surfac...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14Y02E10/20
Inventor 杜超唐碧华谢金元樊菊平杜震宇
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE