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时间:2020-03-29
《乌鞘岭地区高速公路沿线地质灾害发育特征及防治措施.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第19卷第1期水土保持研究Vol.19,No.12012年2月ResearchofSoilandWaterConservationFeb.,2012乌鞘岭地区高速公路沿线地质灾害发育特征及防治措施毛正君1,杨晓华1,王晓钟2(1.长安大学公路学院,西安710064;2.甘肃路桥公路投资有限公司,兰州730030)摘要:乌鞘岭地区高速公路是国道主干线的重要组成路段。开展高速公路沿线地质灾害研究,将为该区域高速公路沿线地质灾害防灾减灾提供基础依据。通过实地调查和分析,查明了乌鞘岭地区高速公路沿线地质灾害发育特征、时空分布规律及形成条件。结果表明:乌鞘岭地区高速公路沿线地质灾害类型主
2、要为泥石流和不稳定斜坡,其中泥石流灾害具有分布广泛、发生频率高等特点;不稳定斜坡局部或零星分布,且现状危害轻;从时空分布规律上来看,具有条带性和集中性;形成条件包括地形地貌、地层结构、降雨、人类工程活动和地震;泥石流采取合理选线、监测预警、跨越疏导及生态恢复的防治措施;不稳定斜坡采取优化坡面形态、排水措施、工程治理结合植物防护的防治措施。关键词:地质灾害;发育特征;防治对策;高速公路;乌鞘岭地区中图分类号:P694文献标识码:A文章编号:1005-3409(2012)01-0202-04StudyonPreventionMeasuresandDevelopmentCharact
3、eristicsofGeologicalHazardsalongtheExpresswayintheWushaoling1,YANGXiao-hua1,WANGXiao-zhong2MAOZheng-jun(1.SchoolofHighway,Chang’anUniversity,Xi’an710064,China;2.HighwayInvestmentCo.LtdGansuRoad&BridgeGroup,Lanzhou730030,China)Abstract:ExpresswayintheWushaolingistheimportantsectionofnationalt
4、runkhighway.Researchforge-ologicalhazardsalongtheexpresswaywillprovidethebasisfordisasterpreventionandreduction.Basedonfieldinvestigationandanalyses,thedevelopmentcharacteristics,temporalandspatialdistributionandforma-tionconditionsofgeologicalhazardsalongtheexpresswayinWushaolingwerefound.T
5、heresultsindicatethatdebrisflowandunstableslopearethemaintypesofgeologicalhazardsalongtheexpresswayinWushaol-ing.Debrisflowdisasterdistributeswidelyandoccursfrequently.Unstableslopedistributeslocallyorfrag-mentarily,anditshazardsisgentle,whichischaracterizedaszonalandconcentratedfeaturesinte
6、rmsoftemporalandspatialdistribution.Geomorphology,stratumstructure,rainfall,humanengineeringactivityandearthquakeareconsideredastheformationconditionsofgeologicalhazards.Debrisflowiscontrolledbyapplyingforreasonableselectinglines,monitoringandwarning,crossgroomingandecologicalrestoration.Uns
7、tableslopeiscontrolledbythemeansofoptimizingslopemorphology,drainagemeasures,engineeringtreatmentcombinedwithplantprotection.Keywords:geologicalhazard;developmentcharacteristic;preventionmeasure;expressway;Wushaoling由于跨越多种地貌单元及地质环境,带状的公路实施,地质灾害监测预警
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