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Construction method and application of shield universal segment point selection model

A construction method and a general-purpose technology, which is applied in the construction of a general-purpose segment selection model for shield tunneling, can solve problems such as low point selection efficiency, and achieve the effects of improving efficiency, improving reliability, and ensuring quality.

Pending Publication Date: 2021-01-05
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a construction method and application of a general-purpose segment selection model for shield tunneling, which is used to solve the technical problem of low point-selection efficiency in existing general-purpose segment selection methods for shield tunneling

Method used

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  • Construction method and application of shield universal segment point selection model
  • Construction method and application of shield universal segment point selection model
  • Construction method and application of shield universal segment point selection model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]A method for constructing a general-purpose segment selection model of shield tunnel 100, such asfigure 1 Shown, including:

[0046]Construct a training sample set and train a neural network to obtain a general-purpose segment selection model for shields;

[0047]Among them, the method of obtaining each training sample is:

[0048]S110. Establish shield machine model, segment model and DTA;

[0049]S120. Based on the DTA, randomly determine the coordinates of the corresponding point on the DTA of the last segment of the segment to be assembled, the pose and point position of the last segment of the segment, the coordinates of the corresponding point on the DTA of the shield machine and The current pose of the shield machine;

[0050]S130. Measure or calculate the construction parameters in the current model state according to the pose of the last ring segment and the current pose of the shield machine; and based on the pose and point position of the last ring segment, construction parameters...

Embodiment 2

[0097]A general-purpose shield selection method for segments, including:

[0098]Collect the pose and point position of the last segment of the segment to be assembled during the real-time construction process, the current construction parameters, and the coordinates of the corresponding point of the segment to be assembled on the DTA, and enter a shield as described in the first embodiment above The point-selection model constructed by the method of constructing the universal tube segment selection model obtains the points of the segment to be assembled and completes the selection of the universal segment segment.

[0099]Such asFigure 7As shown, the first is to pre-train the segment automatic point selection model. On this basis, real-time reference data is received. The reference data is the pose and point position of the last segment of the segment to be assembled, current construction parameters, and The coordinates of the corresponding points of the segment to be assembled on the DT...

Embodiment 3

[0103]A computer-readable storage medium, the computer-readable storage medium includes a stored computer program, wherein when the computer program is run by a processor, the device where the storage medium is located is controlled to execute the one described in the first embodiment above. A method for constructing a shield universal segment selection model and / or a shield universal segment selection method as described in the second embodiment. The related technical solutions are the same as in the first embodiment and the second embodiment, and will not be repeated here.

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Abstract

The invention belongs to the technical field of shield construction, and particularly discloses a construction method and application of a shield universal segment point selection model, and the construction method comprises the steps: constructing a training sample set, and training a neural network to obtain the shield universal segment point selection model, wherein the acquisition method of each training sample comprises the following steps: establishing a shield tunneling machine model, a segment model and DTA; randomly determining a coordinate of a corresponding point of a previous ringsegment of the current segment to be assembled on the DTA, a pose and a point location of the previous ring segment, a coordinate of a corresponding point of the shield tunneling machine on the DTA and a current pose of the shield tunneling machine on the basis of the DTA so as to measure or calculate construction parameters in a current model state; and based on the pose and the point location ofthe previous ring segment, the construction parameters and the coordinates of the corresponding points of the to-be-assembled segment on the DTA, determining the point location of the to-be-assembledsegment as a label to obtain a training sample. According to the method, the problem of insufficient data volume of the segment point selection model is solved, the segment point location selection rationality is ensured, and the segment point selection efficiency is improved.

Description

Technical field[0001]The invention belongs to the technical field of shield construction, and more specifically, relates to a method for constructing a universal segment selection model of a shield and its application.Background technique[0002]Shield method is a tunnel construction method, which is to safely dig forward while maintaining the stability of the excavation surface within the steel shell of the shield machine. Assemble the segments at the end of the tunnel, and then use a jack to push the assembled Of the tube segment, using its reaction force to advance the shield. Each time the shield machine advances a working stroke, a segment of tube segment is assembled under the shield tail support, and the gap between the stratum behind the shield tail and the outer circumference of the segment is pressed in time to prevent the tunnel and the ground It sinks while continuously draining earth from the excavation surface. Compared with other construction methods, shield constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F30/17G06N3/08
CPCG06F30/27G06F30/17G06N3/084
Inventor 朱国力刘瑞
Owner HUAZHONG UNIV OF SCI & TECH