A method for determining the construction and excavation parameters of a shield tunnel passing through a waterway

A technology of tunneling parameters and shield tunneling, applied in CAD numerical modeling, special data processing applications, design optimization/simulation, etc., can solve problems such as inaccurate positioning, errors, and reduced accuracy of simulation results

Active Publication Date: 2022-06-17
CHINA RAILWAY 16 BUREAU GRP BEIJING METRO ENG CONSTR +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, this method also has great defects: ① There is a large error between the parameters used for numerical simulation and the actual construction parameters, and the accuracy of the simulation results is greatly reduced; situation to pinpoint the excavation parameters to be modified

Method used

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  • A method for determining the construction and excavation parameters of a shield tunnel passing through a waterway
  • A method for determining the construction and excavation parameters of a shield tunnel passing through a waterway
  • A method for determining the construction and excavation parameters of a shield tunnel passing through a waterway

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Embodiment 1

[0042] The invention provides a method for determining the parameters of construction and excavation through a water passage under a shield tunnel, comprising the following operation steps;

[0043] Step S1: In the construction section of the entire line, select the test section with the same geological conditions as the target waterway (i.e., a certain section of waterway, including but not limited to the Ma Liuzhou waterway) according to the hydrogeological conditions, and conduct construction site simulation;

[0044] Step S2: When simulating the construction site of the test section, arranging monitoring surfaces and monitoring points, collecting and arranging various construction parameter information in the simulated construction, so as to determine the preliminary proposed tunneling parameter values ​​during the passage of the shield machine through the target waterway;

[0045] Step S3: using spss software and adopting the method of cluster analysis to divide the constr...

Embodiment 2

[0062] The second embodiment of the present invention provides a method for determining the parameters of construction and excavation through the water channel under the shield tunnel (the operation method is the same as that of the first embodiment, which is only an embodiment applied to the Ma Liuzhou water channel);

[0063] In the second embodiment of the present invention, a method for determining the parameters of construction and excavation through the water channel under a shield tunnel is introduced by taking the shield machine crossing the Ma Liuzhou waterway as an example, which includes the following steps (see figure 1 , and more details about the operation process can be found in figure 2 ):

[0064] Step S1: In the construction section of the entire line, according to the hydrogeological conditions, select the test section with the same geological conditions as the target waterway (that is, the Ma Liuzhou waterway), and carry out construction site simulation; ...

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Abstract

The invention discloses a method for determining construction excavation parameters of a shield tunnel passing through a waterway. When simulating a construction site in a test section, monitoring surfaces and monitoring points are arranged, and construction parameter information during simulated construction is collected to determine the initially planned excavation parameter values; Using spss software, cluster analysis method is used to classify the construction parameter information; according to the obtained preliminary proposed tunneling parameter values, the numerical simulation of the tunnel under the shield tunnel is carried out, and the preliminary proposed construction parameters are carried out according to the subsidence of the stratum and the uplift of the segment. Correction; based on the deformation characteristics of the numerical simulation results, based on the classification of the deformation parameter information affecting the stratum and the floating parameter information affecting the segments, the tunneling parameters under the corresponding classification conditions are adjusted until the simulation results meet the preset deformation requirements. Finally, the final parameters of the tunneling construction of the shield tunnel under the target waterway are obtained. The above method is applicable to the determination of tunneling parameters of key buildings such as shield tunneling tunnels and complex strata.

Description

technical field [0001] The invention relates to the technical field of shield machine construction, in particular to a method for determining construction excavation parameters through a water channel under a shield tunnel. Background technique [0002] In recent years, water passages under subway tunnels have become more and more common in urban rail transit construction. Due to the influence of the overlying rivers, uncontrollable factors and sources of danger have also increased. Due to the improper selection of excavation parameters of the shield machine, problems such as formation deformation and segment floating are very likely to occur in the process of tunnel penetration. [0003] At present, the method for determining the excavation parameters of the shield tunnel under the water channel is: first determine the approximate range of the excavation parameters based on the engineering analogy, and then adjust the excavation parameters of the shield machine in time acco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F111/10
CPCG06F30/23
Inventor 黄君田书广黄昌富朱垚锋高永涛崔柔杰李栋栋伍天华李景阳倪金鹏赵鹏飞陶红杰
Owner CHINA RAILWAY 16 BUREAU GRP BEIJING METRO ENG CONSTR
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