A method for grading control of risks in open cut tunnel construction in multi-line intersection area

Abstract

This invention relates to the field of construction risk classification and control technology, specifically to a method for risk classification and control in open-cut tunnel construction in multi-line intersection areas. The method includes acquiring pipeline topology relationships, relocation and temporary protection status, retaining and dewatering schemes, excavation and support sequence, surrounding existing structural constraints, and on-site monitoring point layout information. The intersection relationships are constructed into a set of cross-propagation chains, and a list of key isolation nodes is output. Using the cross-propagation chain set and the list of key isolation nodes as input, gating is performed to obtain a propagation chain gating state set. Based on the propagation chain gating state set, the construction section is risk-classified, and a graded control package is automatically generated. Monitoring feedback and handling receipts are collected to form a gating evidence set. Verification and updates are performed, and dynamic grade adjustments are made accordingly, while simultaneously generating an updated control package. This invention transforms the originally difficult-to-quantify risk propagation process into a chain structure, enabling a systematic expression of the engineering coupling relationships in multi-line intersection areas.

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