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TBM (tunnel boring machine) quantitative type selection method by use of efficacy coefficient method

A technique of efficacy coefficient and variable, applied in the field of quantitative selection of TBM

Inactive Publication Date: 2017-02-01
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, no scientific and complete quantitative method for TBM selection has been found at home and abroad. The TBM quantitative selection method using the efficacy coefficient method makes up for this deficiency and realizes quantitative decision-making with multiple indicators. It is simple, accurate, and has good engineering application value

Method used

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  • TBM (tunnel boring machine) quantitative type selection method by use of efficacy coefficient method
  • TBM (tunnel boring machine) quantitative type selection method by use of efficacy coefficient method
  • TBM (tunnel boring machine) quantitative type selection method by use of efficacy coefficient method

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Embodiment 1

[0044] 1. Project introduction:

[0045] The first phase project of Metro Line 6# in City A has a total length of 8239.923m between Lijia Station ~ Pingchang Station and Pingchang Station ~ Huangmaoping Station. The line plane is "S" type and the curve design radius is R 1 =650m, R 2 =700m, the maximum longitudinal slope is 29‰, and the maximum buried depth is 80m. According to the geological survey and coring situation, the Lijia-Huangmaoping interval is dominated by sandstone and sandy mudstone strata, accompanied by soil-rock alternation, filling layers, and geological characteristics of "upper soft and lower hard" strata; the rock mass is saturated with uniaxial limit resistance The compressive strength value is 5.3-42.1Mpa, which is relatively homogeneous and single; the underground water in the tunnel is not well developed, the water inflow is small, and the sandy mudstone permeability coefficient is 0.036m / d-0.2m / d, which is a weak (micro) permeable rock formation. Exc...

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Abstract

The invention discloses a quantitative type selection method of a TBM (tunnel boring machine, including a rock boring machine and a shield) which is applied construction of a mountain tunnel project, a city subway project, a diversion water supply project and the like by use of an efficacy coefficient method, for realizing the purposes of solving defects of conventional TBM type selection through subjective determination and realizing integrated decision-making and quantification of multiple indexes of TBM type selection. According to the method, six representative evaluation indexes including geological adaptability, wire mesh adaptability, construction progress, equipment cost, support cost and cavity stability are selected, a weight coefficient of each index is determined by use of a Delphi method, a TBM type selection efficacy coefficient method model is established, a total TBM type selection efficacy coefficient value is obtained, and the method is implemented according to such a flow indicated in chart one. The TBM type selection is carried out by use of the efficacy coefficient method, multi-index quantitative decision-making is realized, the method is simple and accurate, and the engineering application value is good.

Description

technical field [0001] The present invention relates to a quantitative type selection method of tunnel boring machine (abbreviated as TBM) used in mountain tunnel engineering, urban subway engineering, water diversion and water supply engineering, etc. A quantitative selection method for TBM under the condition of high quality and high quality requirements. Background technique [0002] TBM is a kind of machine used for rapid excavation, slag removal and support of tunnels. However, due to the uncertain factors of the surrounding environment, it is more difficult to control the construction process, and construction suspensions and accidents frequently occur. The rational selection of TBM equipment, as the primary link to ensure the smooth progress of tunnel engineering, control risks, and save engineering costs, should be given sufficient attention. [0003] In engineering practice, the multi-objective decision-making of TBM type selection is based on the rough judgment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/08
CPCG06Q10/0637G06Q10/0639G06Q50/08
Inventor 周建军杨振兴陈馈郭璐
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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