Numerical simulation analysis method for influence of underground water on subway shield tunnel construction

A technology for subway shield tunneling and numerical simulation, which is applied in data processing applications, electrical digital data processing, special data processing applications, etc.

Pending Publication Date: 2019-05-21
RAILWAY TENTH GROUP NORTHWEST ENG
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  • Abstract
  • Description
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Problems solved by technology

Existing technologies cannot effectively carry out numerical simulation analysis on tunnel construction, and cannot avoid construction safe

Method used

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  • Numerical simulation analysis method for influence of underground water on subway shield tunnel construction
  • Numerical simulation analysis method for influence of underground water on subway shield tunnel construction
  • Numerical simulation analysis method for influence of underground water on subway shield tunnel construction

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0023] The present invention provides a kind of technical scheme: the numerical simulation analysis method that underground water influences on the subway shield tunnel construction, comprises the following steps:

[0024] S1. Building a three-dimensional calculation model: first establish the model and boundary conditions, then select the constitutive model and calculate assumptions, set material parameters, establish the initial stress field, and simula...

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Abstract

The invention discloses a numerical simulation analysis method for influence of underground water on subway shield tunnel construction, and the method comprises the following steps: S1, building a three-dimensional calculation model: firstly building a model and boundary conditions, then carrying out the selection and calculation assumption of a constitutive model, setting material parameters, building an initial stress field, and carrying out the simulation of a shield construction process; S2, designing simulation working conditions: determining a test method, influence factors and a level.According to the method, numerical calculation software is adopted, and the influence rule of the soil bin pressure, the grouting pressure and the grouting range on existing railway settlement and track height difference is analyzed on the basis of a single-factor variable method. Based on an orthogonal test method, the primary and secondary sequence of influence of unearthed bin pressure, grouting pressure and grouting range on existing railway settlement, maximum process track height difference and final track height difference is obtained by adopting a range analysis method, and the problems that numerical simulation analysis cannot be effectively carried out on tunnel construction and potential safety hazards of construction cannot be avoided in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a numerical simulation analysis method for the influence of groundwater on subway shield tunnel construction. Background technique [0002] The main source of groundwater recharge is the vertical infiltration recharge of artificial precipitation, followed by the infiltration recharge of surface water and irrigation recharge. The groundwater flow in the site generally flows from northeast to southwest. The discharge methods of groundwater are mainly artificial mining and natural drainage. Artificial mining is mainly used for farmland irrigation, industrial water, and domestic water; natural drainage includes evaporation and lateral outflow downstream. [0003] The dynamic changes are mainly controlled by seasonal climate, so the groundwater level is greatly affected by seasonal changes. Generally speaking, winter and spring are dry seasons, and the water level drops. ...

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06G06Q50/08
Inventor 南勇胡波周益辉郭晓峰尚春阳赵泽南任登强魏熙孔
Owner RAILWAY TENTH GROUP NORTHWEST ENG
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