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Risk assessment method and device for tunnel construction and storage medium

A technology for risk assessment and tunnel construction, applied in the direction of instruments, probabilistic networks, calculation models, etc., can solve the problems of insufficient training, engineering case data, and the inability to accurately construct BN network structure parameters, etc., to reduce the amount of model calculation and reduce demand volume effect

Active Publication Date: 2021-06-15
BEIJING MUNICIPAL ENG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical engineering applications, for most cases, there is insufficient actual engineering case data, and it is impossible to accurately construct the BN network structure and perform parameter training.

Method used

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  • Risk assessment method and device for tunnel construction and storage medium
  • Risk assessment method and device for tunnel construction and storage medium
  • Risk assessment method and device for tunnel construction and storage medium

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0051] An embodiment of the present invention provides a risk assessment method for tunnel construction, such as figure 1 As shown, the risk assessment method includes:

[0052] S101, constructing a Bayesian network according to predetermined evaluation indicators, the evaluation indicators (referred to as indicators) include risk events of tunnel construction and impact indicators that cause the risk events;

[0053] S102, acquiring the construction site data of the current tunnel;

[0054] S103. Determine the structural parameters of the Bayesian network according to the construction site data, the Copula function of the interdependence of the evaluation indicators, and the marginal distribution parameters of each evaluation indicator;

[0055] S104, constructing the risk event prediction model according to the structural parameters and the Bayesian network;

[0056] S105. According to the preset correspondence relationship between the evaluation index value and the risk l...

Embodiment 2

[0175] An embodiment of the present invention provides a risk assessment device for tunnel construction. The risk assessment device includes a memory, a processor, and a computer program stored in the memory and operable on the processor;

[0176] The processor executes the computer program to implement the steps of the tunnel construction risk assessment method described in any one of the first embodiment.

Embodiment 3

[0178] An embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a risk assessment program for tunnel construction, and when the risk assessment program for tunnel construction is executed by a processor, it can implement the method described in the first embodiment. The steps of any one of the risk assessment methods for tunnel construction.

[0179] Embodiment 2 and Embodiment 3 can refer to Embodiment 1 in the specific implementation process, and have corresponding technical effects.

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Abstract

The invention relates to a risk assessment method and device for tunnel construction and a storage medium. The risk assessment method comprises the following steps: constructing a Bayesian network according to predetermined evaluation indexes, wherein the evaluation indexes comprise a risk event of tunnel construction and an influence index causing the risk event; obtaining construction site data of the current tunnel; determining structural parameters of the Bayesian network according to the construction site data, the Copula function of the mutual dependency relationship of the evaluation indexes and marginal distribution parameters of the evaluation indexes; and constructing the risk event prediction model according to the structure parameters and the Bayesian network. According to the method, the accuracy of the risk prediction model is ensured, meanwhile, the data demand quantity and the model calculation quantity can be greatly reduced, and the method can be used for evaluating various risks such as water inrush and mud burst in the tunnel construction process.

Description

technical field [0001] The present application relates to the technical field of tunnel construction, in particular to a risk assessment method, device and storage medium for tunnel construction. Background technique [0002] In the process of tunnel construction, water inrush is a common accident, once it occurs, it will cause heavy casualties and economic losses. Therefore, it is very important to accurately assess the risk of water and mud inrush and take timely measures to ensure safety. Bayesian network (BN) can use field data to establish BN network structure and learning parameters through corresponding algorithms. When building a risk assessment model, if the data is sufficient, the objectivity of the model can be guaranteed. However, in practical engineering applications, for most cases, there is insufficient actual engineering case data, and it is impossible to accurately construct the BN network structure and perform parameter training. [0003] Therefore, this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/08G06N7/00
CPCG06Q10/0635G06Q10/06393G06Q50/08G06N7/01
Inventor 孙景来武旭王新灵蒋丹方慧郭林峰陈晓明赵堃
Owner BEIJING MUNICIPAL ENG RES INST