An evaluation method for quantifying the influence of ground subsidence on embankment design standards

CN121881483BActive Publication Date: 2026-06-09HOHAI UNIV

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: HOHAI UNIV
Filing Date: 2026-03-18
Publication Date: 2026-06-09

AI Technical Summary

Technical Problem

Existing technologies, when assessing the impact of land settlement on levee design standards, neglect the spatial non-uniformity of land settlement and the constraints of design standards, resulting in significant deviations between the assessment results and actual engineering scenarios. This makes it impossible to accurately reflect the differentiated impact of settlement on the flood control capacity of levees in different river sections and cross-sections.

Method used

A hydrological-hydraulic coupled model was adopted, combined with multi-source data, to simulate the design flood level under different design return periods. The relationship curve between the starting point distance and the design levee crest elevation and the three-dimensional response surface were constructed to quantify the impact of ground settlement on the flood control design standard of the levee. Through the selection of typical sections and the coupled calculation of settlement, the impact of settlement on the levee was accurately reflected.

Benefits of technology

It improves the accuracy and reliability of ground settlement impact assessment, provides scientific and technical support, provides accurate basis for the review of dike design standards and flood control project decisions, and solves the difficulty of quantitatively linking settlement amount with the reduction of design standards in traditional methods.

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Abstract

The application discloses an evaluation method for quantifying the influence of land subsidence on embankment design standards. The method integrates multi-source data such as hydro-meteorological, topographic and land subsidence monitoring, and drives a hydrological-hydrodynamic coupling model to simulate the design flood level of the river under different design return periods. The typical cross section is selected, and the spatial cumulative effect of land subsidence and the relative reduction of embankment elevation caused by land subsidence are quantitatively calculated. A three-dimensional response relationship model of design flood level, subsidence and standard adjustment range is constructed to accurately quantify the reduction degree of flood control design standards. The application breaks through the simplification limitation of the traditional linear superposition method, realizes the quantitative correlation between land subsidence and the reduction range of flood control design standards, establishes an integrated evaluation process of "land subsidence amount-design standard adjustment-engineering response strategy", and provides scientific basis and technical support for the review of embankment design standards, safety evaluation and flood control and disaster reduction decision-making.

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