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A method and system for determining the total thrust of TBM excavation

A technology to determine the method and total thrust, applied in earthwork drilling, design optimization/simulation, mining equipment, etc., can solve problems such as complex model structure and unfavorable practical application in the field of hard rock tunneling

Active Publication Date: 2020-07-31
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the prediction of the total thrust of the roadheader in hard rock, the existing research based on dimensional analysis has not screened out important influencing factors, resulting in a complex model structure, which is not conducive to the practical application in the field of hard rock tunneling

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  • A method and system for determining the total thrust of TBM excavation
  • A method and system for determining the total thrust of TBM excavation
  • A method and system for determining the total thrust of TBM excavation

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specific Embodiment 1

[0078] The calculation method of the total driving thrust of the present invention will be described in detail below in conjunction with the embodiments. Specific steps are as follows:

[0079] 1. List the parameters that affect the total thrust F of the excavation: η is the rock firmness coefficient; σ t is the tensile strength of rock, unit: kpa; σ c is the saturated compressive strength of the rock, unit: kpa; f is the friction coefficient of the rock; c is the cohesion of the rock, unit: kpa; V p is rock longitudinal wave velocity, unit: m / s; v is tunneling speed, unit: m / s; ω is cutter head rotation speed, unit: r / min.

[0080] 2. According to the following formulas (1)-(6), calculate the dimensionless quantity and the total thrust of dimensionless excavation respectively. Among them, π 1 , π 2 , π 3 , π 4 , π 5 are five dimensionless quantities; η is the rock firmness coefficient; σ t is the tensile strength of rock, unit: kpa; σ c is the saturated compressive ...

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Abstract

The invention discloses a TBM tunneling total thrust determining method and system. The method comprises the steps that parameters influencing the total tunneling thrust are determined; according to the parameters, determining the dimensionless quantity and the dimensionless tunneling total thrust in the TBM tunneling process; obtaining a coefficient identification result of the dimensionless quantity by adopting an elastic network algorithm according to the dimensionless quantity; multiplying each dimensionless quantity coefficient identification result by the corresponding dimensionless quantity to obtain a tunneling total thrust calculation model; and determining the total tunneling thrust of the TBM according to the total tunneling thrust calculation model. By means of the method or the system, rapid and accurate calculation of the total tunneling thrust in the tunneling process of the TBM equipment can be achieved.

Description

technical field [0001] The invention relates to the field of calculating the total thrust of TBM excavation, in particular to a method and system for determining the total thrust of TBM excavation. Background technique [0002] In order to speed up the development and utilization of underground space, a tunnel boring machine (TBM) for rock formations came into being. The total thrust of the excavation is an important performance parameter to ensure the normal advancement of the excavator. At present, the calculation methods for the total thrust of TBM excavation are mainly divided into theoretical models based on mechanical principles and predictions based on engineering data analysis. Among them, in this type of research based on engineering data analysis, there is a calculation method based on dimensional analysis, which has high versatility. However, for the prediction of the total thrust of the roadheader in hard rock, the existing research based on dimensional analysi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20E21D9/10
Inventor 张茜周思阳亢一澜蔡宗熙侯振德
Owner TIANJIN UNIV