基于深部土体位移推演的工程边坡安全评估方法

By using deep soil displacement extrapolation technology, continuous deep soil displacement curves and local shear failure approximation indices are obtained, solving the problem of judgment errors in slope safety assessment in existing technologies, and realizing accurate identification and early warning of hidden shear zones in complex geological media.

CN122220659BActive Publication Date: 2026-07-17CHINA RAILWAY NO 10 ENG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY NO 10 ENG GRP CO LTD
Filing Date
2026-05-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing engineering slope safety assessment technologies ignore spatial deformation gradients, leading to misjudgments. They cannot effectively identify the hidden shear displacement of local weak interlayers and the uniform and coordinated changes of thick soft soil, resulting in underreporting and false reporting.

Method used

By acquiring horizontal absolute displacement and spatial elevation data from deep inclined boreholes, combined with soil physical values, an adaptive geological stiffness penalty coefficient is calculated, a continuous deep soil displacement projection curve is constructed, a local shear failure approximation index is obtained, and early warning information is output based on the comparison between this index and the early warning threshold.

Benefits of technology

It accurately captures the very early microscopic precursors of deep disaster evolution, solving the problems of missed early micro-shear faulting on deep and large slopes and false alarms of uniform deformation in thick layers, providing ample time window for on-site disaster prevention and mitigation.

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Abstract

本发明属于基于智能传感系统的土体位移推演技术领域,具体涉及基于深部土体位移推演的工程边坡安全评估方法,其方法包括:获取各深度节点的水平绝对位移观测数据及空间高程数据,提取多项物理力学参量并筛选基础参考数值;基于基础参考数值获取自适应地质刚度惩罚系数,求解极小值目标参数计算式以获取连续深部土体位移推演曲线;对该曲线求导获取深度连续空间的几何剪应变,计算等效深部剪应力参量与上覆有效自重应力物理值,进而获取局部剪切破坏逼近指数;基于越界比对结果输出预警信息并触发物理响应单元。本发明实现了对深部局部隐蔽性剪切滑动的高置信度预警评估。
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