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1、车道峪隧道洞身开挖技术交底书交底单位名称：中铁四局张唐铁路项目部编号：第1页共12页工程名称张唐铁路六标设计文件图号车道峪隧道施工图施工部位车道峪隧道洞身开挖交底日期2011年2月10日1．设计情况车道峪隧道位于张唐铁路ZTSG-6标第一项目队管段，设计为双线隧道，隧道起讫里程为DK352+266—DK352+584，本隧道属于短隧道，最大埋深约52m。本隧道围岩主要由Ⅳ级和Ⅴ级围岩组成，断面加宽均为90cm，开挖尺寸见附图，进、出口均设置12延长米的明洞段，施工方法除进、出口明洞段为明挖法，其余均
2、采用台阶法施工，其中Ⅳ级围岩采用两台阶法开挖，Ⅴ级围岩采用三台阶法开挖。上台阶每循环进尺不得大于1榀钢架间距（Ⅳ级围岩1m，Ⅴ级围岩0.75m）；边墙每循环开挖进尺不得大于2榀，仰拱每循环开挖进尺不得大于3m，隧道开挖后初期支护及时施作并封闭成环，封闭位置距离掌子面不得大于35m。洞身围岩级别段落表序号里程范围长度（m）围岩分级1DK352+266～DK35
+27812Ⅴ明洞2DK352+278～DK352+30325Ⅴ加强3DK352+303～DK352+38582IV洞口段4DK352+385
3、～DK352+41126Ⅴ加强5DK352+411～DK352+47261IV6DK352+472～DK352+55179IV洞口段7DK352+551～DK352+57221Ⅴ加强8DK352+572～DK352+58412Ⅴ明洞2．施工工艺及质量要求①V级围岩采用三台阶法施工，施工顺序如下：三台阶施工采用三台阶同步开挖，围岩软弱破碎时上台阶预留核心土，中、下台阶左右侧错开2米开挖，及时施工仰拱和填充。施工过程中，严格执行“管超前、严注浆、强支护、勤量测、早封闭、弱爆破”十八字方针，每循环进尺控制
4、在0.75m。feelfreetolistentotheirvoicesandhelpthemassessolveproblems,wewereofficiallyopenedonMay10"12345"Mayorcalls,formulatedrulesandregulations,equippedwithafull-timestaff,a24-houron-dutysystem,peopletocalltoreceive,reply,action,reminders,feedbackandsoo
5、n.Byyearend,handledthecrowdcalls1076,94.7%feedbackrate. ByMayorcallsactivecoordinationtosolvealargenumberofbearsontheimmediateinterestsofthepeopleandissuesofgreatlives,butalsoforleadershipresearchanddecisiontocollectalotofgoodideasandsuggestions,byall
6、sectorsofthecommunityalike.Second,startMunicipalGovernmentAffairsHallbuilt.OnMay11,webuiltandlaunchedthecity-governmentlobby,weresettledin12departments,strictimplementationoffirstaskingdutysystem,servicesystem,systemofgratuitous,"receiving,internalcoor
7、dination,headofthewindowhandle,limitedtimeconcluded"one-stopservice.Bytheendoftodaytoacceptvarioustypesof3,273,originallyofupto100%. RunningGovernmentAffairsHall,theconvenienceofthemasses,promotingopenGovernment,improvetheinvestmentenvironmentandsolve
8、theirpracticalproblems,andsodidalotofwork,masses,servethecommunityfortheGovernmenttoplayaverygood"window,link,model".Third,createacitygovernmentpublicaffairsnetwork.WerelyontheGovernmentWebsite,wascompletedonMay24,theprovince'sfirstpubl
