A method for predicting the suitability of tbm excavation

A technology of suitability and calculation method, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., can solve the problem that it is difficult to reflect the ability of TBM to be objectively suitable for the tunnel environment alone, so as to avoid the statistical deviation of tunneling efficiency, and it is not easy to be disturbed by human factors. Conclusion Simple Effects

Active Publication Date: 2022-03-25
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology

[0010] 4. The actual tunneling efficiency of TBM is directly calculated according to progress indicators such as footage, which includes the influence of many human factors (such as construction organization, TBM operation level, TBM fault handling, etc.), and it is difficult to independently reflect the ability of TBM to objectively adapt to the tunnel environment

Method used

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  • A method for predicting the suitability of tbm excavation
  • A method for predicting the suitability of tbm excavation
  • A method for predicting the suitability of tbm excavation

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Experimental program
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Embodiment

[0088] A method for predicting the suitability of TBM excavation, comprising the steps of:

[0089] S1: Statistics of the total length l III ;

[0090] S2: Statistics of the total length l IV ;

[0091] S3: Statistics of the total length l V ;

[0092] S4: According to l III , l IV , l V The suitability parameter Pg of the TBM equipment in the statistical section of the tunnel is obtained through the reduction calculation.

[0093] Further, a method for predicting the suitability of TBM excavation, the total length l III Calculated as follows:

[0094]

[0095] where l Ⅲi It is the length of a single jamming section in the surrounding rocks of grades Ⅰ-Ⅲ: if the distance between consecutive jamming sections is less than the length of the TBM main engine, it shall be calculated as the length of the TBM main engine; if the length of the jamming section is to be expanded and excavated, it shall be calculated as the length of the expanded excavation section Calculate...

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Abstract

The invention discloses a method for comparing the suitability of TBM excavation, comprising the following steps: S1: counting the total length l III ; S2: Statistics of the total length l IV ; S3: Statistics of the total length l V ; S4: According to l III , l IV , l V The suitability parameter Pg of the TBM equipment in the tunnel statistical section is calculated by correspondingly reducing the corresponding surrounding rock conditions and proportions. The conclusion of the invention is simple, and the results are easy to compare: the overall excavation suitability comparison between different tunnels of the same TBM model and different TBM models of the same tunnel can be carried out. The relatively small value indicates that the excavation adaptability of the TBM equipment under the tunnel is strong, otherwise it indicates that the equipment suitability is weak.

Description

technical field [0001] The invention relates to the field of tunnel excavation, in particular to a method for predicting the suitability of TBM excavation. Background technique [0002] In tunnel construction, in addition to simple equipment design and manufacture, there are currently two main categories of research ideas on TBM equipment performance. One is to study the external environment of the tunnel (that is, the geological conditions of the tunnel). The idea is to classify the surrounding rock, so as to determine the working environment of the TBM according to different surrounding rock conditions, and further study the interaction between rock and machine. That is, comprehensive consideration should be made according to the surrounding rock conditions and the difficulty and suitability of the equipment during the excavation process. The most typical one is the relevant content of P18 in the "Technical Guide to Rock Tunneling Machine Method for Railway Tunnel Full Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/11
CPCE21D9/00E21D9/11
Inventor 钟果刘云鹏张世殊冉从彦吴章雷杨静熙肖华波
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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