A deep-buried tunnel surrounding rock deformation load calculation method

A calculation method and deformation technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of waste of resources and large safety reserves, and achieve the effect of reducing project cost

Inactive Publication Date: 2019-06-14
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

Therefore, using the calculation method of landslide load in the "Code for Design of Railway Tunnels" for tunnel construction will result in a large safety reserve and waste of resources. Therefore, it is necessary to propose a deformation load calculation method based on surrounding rock deformation conditions to guide engineering practice

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  • A deep-buried tunnel surrounding rock deformation load calculation method
  • A deep-buried tunnel surrounding rock deformation load calculation method
  • A deep-buried tunnel surrounding rock deformation load calculation method

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Embodiment

[0087] At present, there are many methods for determining the surrounding rock load, such as theoretical calculation method, empirical formula method, numerical simulation method, real-time monitoring method, model test method, etc., and each method has its applicable conditions. Among them, the commonly used theoretical calculation methods are mainly the surrounding rock load calculation formulas derived from Platts theory, Terzaghi theory, elastoplastic theory, limit equilibrium theory, rock pillar theory, etc., and the representative one is Bill Bowman's formula , Terzaghi formula, Caco formula, Platts formula, Fenner formula, Kastner formula, etc. Commonly used empirical formulas include calculation formulas based on the Q system and calculation formulas based on the RMR system. Numerical simulation method has certain applicability to projects whose stress state cannot be calculated by analytical method, whose boundary conditions are relatively complex, and where there is ...

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Abstract

The invention provides a deep-buried tunnel surrounding rock deformation load calculation method, and belongs to the field of tunnels. The surrounding rock deformation load calculation method based onthe surrounding rock deformation condition is deduced and established through a mathematical statistics method by adopting the surrounding rock load on-site monitoring data and considering the surrounding rock level, the tunnel burial depth and the tunnel span factors according to the surrounding rock load on-site monitoring data. Research results can provide reference for future tunnel and underground engineering support design, and meanwhile, the engineering cost can be effectively reduced.

Description

technical field [0001] The invention relates to the field of tunnels, in particular to a method for calculating deformation loads of surrounding rocks of deeply buried tunnels. Background technique [0002] Surrounding rock load refers to the force that causes deformation or destruction of rock mass and support around the underground excavation space. It includes the surrounding rock stress caused by the ground stress and the force acting on the supporting structure due to the deformation of the surrounding rock. The surrounding rock load can generally be divided into loose load and deformation load according to the occurrence form of the force. There are many factors affecting the load of surrounding rock, which can be generally divided into two categories: one is geological factors, which include initial stress state, rock mechanical properties, rock mass structural plane, etc.; the other is engineering factors, which includes construction methods, Support setting time, ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王明年童建军刘大刚于丽王志龙张霄赵思光姚萌杨涅张艺腾
Owner SOUTHWEST JIAOTONG UNIV
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