某露天矿采场边坡稳定性分析与评价.pdf
SerialNo.671现代矿业总第671期
March2025MODERNMINING2025年03月第03期
某露天矿采场边坡稳定性分析与评价
郭马磊
(锡林郭勒盟乌兰图嘎煤炭有限责任公司)
摘要为探讨某一露天采矿场边坡的稳定性,对采场的各个边坡区进行表面变形、应力和地
下水监测。监测结果表明,所有监测区域均维持在稳定状况,整体监测工作态势良好。针对边坡稳
定性所固有的随机性与模糊性,以10个具有代表性的现状边坡断面及3个计划边坡断面作为分析对
象,运用Geo-Slope软件进行数值模拟,计算边坡的安全系数下限,对边坡的稳定性进行全面评估。
模拟结果表明,首采区、第三采区的东侧及西侧边坡安全系数设定为1.20,北侧边坡则为1.15;第二采
区的东侧、北侧及西侧边坡均设定了1.20的安全系数。该采矿场潜在的滑坡模式主要为以6-1煤层
顶板为滑动基面的复合型滑移和典型的圆弧形滑动。
关键词露天边坡稳定性安全系数滑坡模式
DOI:10.3969/j.issn.1674-6082.2025.03.041
SlopeStabilityAnalysisandEvaluationofanOpen-pitMine
GUOMalei
(XilingolLeagueWulantugaCoalCo.,Ltd.)
AbstractInordertoexplorethestabilityofanopen-pitmineslope,surfacedeformationmonitoring,
stressmonitoringandgroundwatermonitoringarecarriedoutineachslopeareaofthestope.Themonitoring
resultsshowthatallmonitoringareasaremaintainedinastablestate,andtheoverallmonitoringsituationis
good.Inviewoftheinherentrandomnessandfuzzinessofslopestability,10representativecurrentslopesec⁃
tionsand3plannedslopesectionsaretakenastheanalysisobjects,andGeo-Slopesoftwareisusedfornu⁃
mericalsimulationtocalculatethelowerlimitofsafetyfactorofslopeandcomprehensivelyevaluatethesta⁃
bilityofslope.Thesimulationresultsshowthatthesafetyfactoroftheeastandwestslopesofthefirstmining
areaandthethirdminingareaissetto1.20,andthesafetyfactorofthenorthslopeis1.15.Thesafetyfactor
of1.20issetontheeast,northandwestslopesofthesecondminingarea.Thepotentiallandslidemodeof
theminingfieldismainlyacompositeslipwiththe6-1coalseamroofastheslidingbasesurfaceandatypi⁃
calcirculararcslip.
Keywordsopen-pitslopestability,safetyfactor,landslidemode
边坡稳定性