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Ground surface settlement sensitivity grading system and method suitable for subway shield interval engineering

A technology for surface subsidence and subway shielding, applied in data processing applications, climate change adaptation, instruments, etc., can solve the problems of poor visualization of evaluation results, determination of evaluation factors, and low data accuracy, and achieve quantitative and strong objectivity Sex, the effect of solving the collinearity problem

Pending Publication Date: 2022-07-08
CHANGCHUN INST OF TECH
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Problems solved by technology

The existing technology cannot determine the weight of the evaluation factor according to the relationship between the evaluation factor and the settlement point when evaluating the sensitivity of the settlement of the subway shield, so that the accuracy of the obtained data is low, and the visualization of the evaluation results is poor.

Method used

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  • Ground surface settlement sensitivity grading system and method suitable for subway shield interval engineering
  • Ground surface settlement sensitivity grading system and method suitable for subway shield interval engineering
  • Ground surface settlement sensitivity grading system and method suitable for subway shield interval engineering

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Embodiment Construction

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0054] 1. Explain the embodiment. In order for those skilled in the art to fully understand how the present invention is specifically implemented, this part is an explanatory embodiment for expanding the description of the technical solutions of the claims.

[0055] The invention provides a grading system for the sensitivity of the surface subsidence of the subway shield tunnel project. Based on the data acquisition of unmanned aerial vehicle remote sensing and geological survey combined with GIS grid data model, the height of the building, the thickness of the overlying soil layer, the sand and gravel are selected...

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Abstract

The invention belongs to the technical field of metro shield construction, and discloses a metro shield interval engineering ground surface settlement sensitivity grading system and method.The metro shield interval settlement sensitivity system obtains a raster data model based on unmanned aerial vehicle remote sensing and geological survey data and combines the raster data model with a GIS. Seven evaluation factors including the building height, the overlying soil layer thickness, the sand and gravel thickness, the gravel content, the distance from the shield center, the distance from the river and the underground water level are selected, and the occurrence probability of ground surface settlement of each cell is calculated through a method of combining a deterministic coefficient and a logistic regression model. The logistic regression method can determine the weight of an evaluation factor according to the relationship between the evaluation factor and a settlement point when evaluating the settlement sensitivity of the subway shield, but has great subjectivity during variable processing. The deterministic coefficient method can solve the quantification problem of multi-factor data, and the relative weight of each grade of the evaluation factor is calculated.

Description

technical field [0001] The invention belongs to the technical field of subway shield tunnel construction, and in particular relates to a system and method for grading sensitivity of surface settlement suitable for subway shield tunnel engineering. Background technique [0002] At present, in the subway shield construction, it is of great practical significance to study the subsidence sensitivity evaluation of the subway shield construction area for the prevention and control of surface subsidence hazards. [0003] In recent years, with the rapid development of urban rail transit, the engineering environment problems faced by the subway shield construction have become increasingly complex, the potential risk factors have increased, and the construction difficulty has increased. How to scientifically evaluate the potential risk level of subway surrounding environment is the premise to ensure the safety of subway shield construction. At present, domestic and foreign research m...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20G06F17/18G06Q10/06G06Q50/08G06F111/10G06F111/08
CPCG06F30/13G06F30/20G06F17/18G06Q10/0635G06Q50/08G06F2111/10G06F2111/08Y02A30/60
Inventor 王伟高成梁王兴郭航马鹏达高剑朱相权
Owner CHANGCHUN INST OF TECH
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