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1、青荣城际铁路Ⅲ标段第二项目部路基工程路基开挖施工技术交底路堑开挖施工技术交底单位工程名称:DK129+020~DK132+770段路基编号:QRCJⅢ-Ⅱ-LJ-JSJD-001工程项目路基工程工程部位DK129+020~DK132+770接受班组工程数量2548m进度要求总体施工组织安排本单位工程起点里程为DK129+020,终点里程为DK132+770,全长2548米,其中1819.67米以路堑形式通过。地层由表层向下依次为粉质黏土、根植土、全风化页岩、强风化页岩,粉质黏土根植土厚度较小,一般不超过50cm,路基大部分采用换
2、填形式,岩层开挖可提供大量石方,用于A、B组填料加工。路堑边坡坡率因设计断面不同一般采用1:1.25、1:1.5和1:1.75三种形式,边坡高度+超过8米增加平台,平台宽度为2米。全段落主要采用机械开挖,部分深路堑开挖困难的,采用钻爆施工。本路基段共分为5个主要挖方段落,各段落工程量及施工周期如下:段落起止长度挖方数量施工周期DK129+020~DK129+481.2461.2419202周DK130+199.54~DK130+638.65
29.111156076周DK131+203.25~DK131+315111.75147
3、491周DK131+620~DK131+886.085266.085307882周DK132+218.475~DK132+770551.52523265312周一、作业方法开挖方式分为一般土质路堑及全风化岩层的机械开挖和石质路堑的爆破开挖两种。二、操作规程1、一般土质路堑及全风化岩层机械开挖Functionsoftheregulationinthepresenceofthecrossoverlapping,departments,unitsshouldpromptlypassgas,timelyreporting,neversh
4、uffledisputesovertrifles,affectthework.Departmentofmunicipalanddistrictandtheunitsaretojointtask.Packagelinkedtotruepackets,notonlytotheidea,way,alsooutput,money.Duringthecomprehensiveimprovement,variousorgansandinstitutionstoeachhalfouthalfdaytime,theorganizationofc
5、adresWorkerstojointareatocarryoutcompulsorylabor,tohelptheoldpeoplecleanupgarbage,remediationofenvironmentalremediation,demonstrationmasses,closerelationsbetweencadresandthemasses.Areashouldtaketheinitiativetoassumethetaskofinvestigating.Thecountytoapanagemanagementr
6、esponsibility,withinthejurisdictionoftheworkassoonaspossibletoorganizeadragnetinvestigation,findouttheexistingproblemofregionallocationandscale,inaccordancewiththesizeoftheproblemandarrangementofthecycleofremediationandthecity,theestablishmentofkeyproblemledger,disch
7、argeschedule,apinnumber.Thetownship,streetsandvillages,thecommunitywouldliketoplaythemainrole,fulfillitsresponsibilitytorevealallthedetails,launchanin-depth,meticulouswork,thequalityandquantityofthecompletionofacomprehensiveremediationtasks.第11页共9页青荣城际铁路Ⅲ标段第二项目部路基工程路
8、基开挖施工技术交底作业方法、操作规程及施工技术要求土方路堑开挖中,根据路堑开挖深度和纵向长度,采取下列方式进行:机械开挖路堑且弃土运距较远时,采用横挖法,用挖掘机配合自卸汽车进行,设置单独的运土通道及临时排水沟,每开挖层台阶保持在3-4米左右。开挖明槽地段,采用