Method for comparing TBM tunneling suitability

A technology of suitability and calculation method, 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

Active Publication Date: 2020-10-30
POWERCHINA CHENGDU ENG
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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

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  • Method for comparing TBM tunneling suitability
  • Method for comparing TBM tunneling suitability
  • Method for comparing TBM tunneling suitability

Examples

Experimental program
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Embodiment

[0088] A method of comparing suitability for 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 comparing the suitability of TBM excavation, the total length of the jamming machine in the surrounding rock sections of grades I to III in S1 is 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 to III: if the distance between consecutive jamming sections is less than the length of the TBM main engine, it will be calculated as the length of the TBM main engine; if the length of the jamming section is expanded, it will be calculated...

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Abstract

The invention discloses a method for comparing TBM tunneling suitability. The method comprises the following steps of S1, counting the total length lIII of hanging of I-III grade surrounding rock sections; S2, counting the total length lIV of hanging of an IV-grade surrounding rock section; S3, counting the total length lV of hanging of V and VI grade surrounding rock sections; and S4, performingcorresponding reduction according to the lIII, the lIV and the lV as well as the corresponding surrounding rock conditions and proportion to calculate a suitability parameter Pg of tunnel statisticalsection TBM equipment. According to the method, the conclusion is simple, and results are easy to compare: the comparison of the overall tunneling suitability of the same TBM machine type among different tunnels and the overall tunneling suitability among different TBM machine types in the same tunnel can be conducted, wherein the relatively small numerical value indicates that the tunneling adaptability of the TBM equipment under the tunnel is strong and conversely, 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 comparing 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 Sec...

Claims

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Application Information

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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
OwnerPOWERCHINA CHENGDU ENG