基于土体振动规律的填土边坡地质稳固性勘察技术

打开文本图片集

中图分类号：TN23 文献标志码：A 文章编号：1005-8249（2025）04-0095-05

DOI：10.19860/j.cnki.issn1005-8249.2025.04.018

SHEN Qiangli， TIAN Minglei （Ecological Environment Geological Service Center of Henan Provincial Geological Bureau， Zhengzhou 450053，China ）

Abstract：Toadresstheisuesoflowsensitivityinstabilityanalysisandinaccuratecalculationofstabilitycoeficientforfilled soilslopesusingthree-dimensionalgeologicalmodels，studyproposesasiteinvestigationtechniqueforfilledsoilslopestability basedonsoilvibrationdynamics.Byestablishingamodelderivedfromtheacceleration time-historycurveof slopesoil vibration，weanalyzethedynamicresponserelationshipbetweenthesoilandvibrationwavesundervibrationalloading，aswel asthe slopefailure modes，toevaluate the stabilityoffiledsoil slopes.Theresultsshow thatthevibration wave inductionand displacementdetectionresultsobtainedusing theproposedmethodalignwithactualconditions；Thecalculatedstability coefficient was 3.5，with an error not exceeding 0.5 compared to the actual value； The average stability coefficient was 2.1， showingasignificantdecrease with increasingvibrationwavecycles；Whenthestabitycoeffcientreached1.6，itdropped to （20号 0.8 after 2000 vibration cycles.This demonstrates that the proposed method provides more accurate analysis of slope displacement and stability coefficients， proving it to be feasible and effective.

Key Words：soil vibration law；filing slope；stabilitysurvey；PGAamplification coefficient；stabilitycoefficient

0 引言

一些边坡施工受到地区环境条件影响，比如施工区域附近存在公路、铁路、矿山等场所，当有重型汽车、火车经过或矿山爆破开挖时，会在地层中形成一定的振动波，对建筑施工区域的土体产生波动破坏。（剩余4851字）