Deep excavation risk evaluation method based on network reasoning

Abstract

The invention discloses a deep excavation risk evaluation method based on network reasoning, in particular to a deep excavation engineering risk evaluation method based on a risk tree network for probabilistic reasoning, which comprises the following steps: establishing a deep excavation engineering risk evaluation and computation model according to risk identification and analysis; taking preliminary statistic deep excavation engineering quality safety accident data as basis for probabilistic computation and loss assessment, and adopting the risk tree network to conduct the linear reasoning of risk event occurrence probability and the dynamic update of the probability; adopting expert investigation and historical experience to conduct the assessment of losses caused by risks; and combining the established risk evaluation model to evaluate deep excavation risks to obtain the overall risk level of the deep excavation engineering and the average risk level of each risk event. The invention has the advantages that the method can be used for conducting deep excavation engineering construction risk evaluation and dynamic risk evaluation, the risk evaluation is enabled to more accurate and objective, the dynamic risks in the whole construction process can be reflected, the relevant prevention, control and reduction of the construction risks are facilitated and the safety is guaranteed.

Description

technical field [0001] The invention relates to a construction risk assessment method for deep foundation pit engineering of housing construction, rail transit, municipal facilities and the like, in particular to a deep foundation pit risk assessment method based on network reasoning. Background technique [0002] In recent years, foundation pit projects at home and abroad have shown a trend of "big, deep, tight, and close". The construction of deep foundation pit projects has the characteristics of large investment, long construction period, complex technology, many unforeseen risk factors, and great impact on the social environment. , is a high-risk construction project. Therefore, deep foundation pit accidents occur frequently, and cause huge economic losses and casualties. [0003] Only by evaluating the risk of deep foundation pit engineering more accurately through reasonable risk assessment methods can we control the risk of engineering construction in a targeted man...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve some problems existing in the existing risk assessment methods, including the inability to conduct accurate and objective quantitative risk assessment, the inability to accumulate and reason the case data related to risk assessment, and the inability to perform dynamic risk assessment in the whole process. And then provide a new risk assessment method of deep foundation pit based on network reasoning

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