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Effective thrust and torque calculation method of tunnel boring machine cutterhead on the basis of CSM (Colorado School of Mines) model

A tunnel boring machine and tunnel boring technology, applied in the direction of calculation, geometric CAD, special data processing applications, etc., can solve problems that are not scientific, objective and reliable, can not correctly guide the safety accident hob of tunneling construction, and cannot thrust and torque the cutter head Monitoring provides theoretical basis and other issues to achieve the effect of reducing safety accidents

Inactive Publication Date: 2017-02-08
GUANGZHOU MUNICIPAL ENG GROUP
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0010] However, in the current construction process of composite strata, the effective thrust and effective torque of the tunnel boring machine cutterhead often need to be estimated based on construction experience, which cannot provide reasonable selection and monitoring of the cutterhead thrust and torque during the tunnel boring machine excavation construction process. Provide a theoretical basis, can not correctly guide the tunneling construction and reduce the occurrence of safety accidents (such as overloading and damage to the hob caused by unreasonable thrust setting of the cutter head, which will cause a series of construction accidents, etc.), which is not scientific, objective and reliable enough

Method used

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  • Effective thrust and torque calculation method of tunnel boring machine cutterhead on the basis of CSM (Colorado School of Mines) model
  • Effective thrust and torque calculation method of tunnel boring machine cutterhead on the basis of CSM (Colorado School of Mines) model
  • Effective thrust and torque calculation method of tunnel boring machine cutterhead on the basis of CSM (Colorado School of Mines) model

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no. 1 example

[0069] Aiming at the problem that the existing technology needs to rely on construction experience to estimate the effective thrust and effective torque of the cutterhead of the tunnel boring machine in the construction process of the composite stratum, the present invention proposes a new effective thrust of the cutterhead of the tunnel boring machine based on the CSM model The calculation method of torque and torque can provide a theoretical basis for the reasonable selection and monitoring of tunneling parameters when tunnel boring machines are operating in composite strata, and can better guide tunneling construction. The calculation method specifically includes the following steps:

[0070] 1. Stratum simplification of tunnel excavation section in complex stratum and characterization of cutter position parameters of roadheader.

[0071] First, the oxyz global fixed coordinate system is established: take the center of the excavation section as the coordinate origin, the ex...

no. 2 example

[0100] The composite formation of this embodiment is a typical soft and hard formation, which can be simplified to two layers, that is, K=2, and the formation parameters are as shown in Table 1; the tunnel boring machine of this embodiment is an earth pressure balance type roadheader, and excavation diameter D e 6280mm, a total of 39 17-inch disc hobs are installed on the cutter head, and the radius of the hob is R i =216mm, blade width T i =17.8mm, edge installation radius R 0i =284mm, the cutter position parameters are shown in Table 2; when the roadheader is excavating, the penetration depth of the cutter head per revolution h=5mm / r, and the cutter head speed n=1.2r / min.

[0101] Table 1 Formation parameters

[0102]

[0103] Table 2 tool location parameters

[0104]

[0105]

[0106] Then the specific process of the method for calculating the effective thrust and torque of the tunnel boring machine cutter head in this embodiment is as follows:

[0107] Step 1...

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Abstract

The invention discloses an effective thrust and torque calculation method of a tunnel boring machine cutterhead on the basis of a CSM (Colorado School of Mines) model. The method comprises the following steps of: establishing a global coordinate system in a compound stratum to simplify a tunnel boring section, and determining the cutter spacing parameter of the tunnel boring machine in the established global coordinate system; according to the established global coordinate system and the cutter spacing parameter of the tunnel boring machine, adopting the CSM model to carry out disc cutter stress calculation; according to the result of the disc cutter stress calculation, calculating the effective thrust and the effective torque of the tunnel boring machine cutterhead in the compound stratum; and according to the calculation result of the effective thrust and the effective torque of the tunnel boring machine cutterhead, drawing a change curve of cutter stress and the effective thrust and the effective torque of the cutterhead when the cutterhead rotates and bores for one circle. The method provides a theoretical basis for the reasonable selection and monitoring of the thrust and the torque of the cutterhead in an excavation construction process of the tunnel boring machine, and is more scientific, objective and reliable. The method can be widely applied to the field of tunnel construction.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for calculating the effective thrust and torque of a cutter head of a tunnel boring machine based on a CSM model. Background technique [0002] Glossary: [0003] Tunnel boring machine: a highly intelligent tunnel construction major technical equipment integrating mechanical, electrical, hydraulic, optical and computer technologies, including shield tunneling and TBM. [0004] Shield machine: Shield Machine, generally refers to the tunnel boring machine suitable for soft ground. [0005] TBM: Tunnel Boring Machine, generally refers to a tunnel boring machine suitable for rock formations. The main difference between it and the shield machine is that it does not have the functions of maintaining the stability of the face such as mud water pressure and earth pressure. [0006] Effective thrust of the cutter head: refers to the resultant force required to push the disc-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/367
Inventor 吴起星安关峰刘添俊
Owner GUANGZHOU MUNICIPAL ENG GROUP
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