抽象该设计原始基础石桥头隧道土建.pdfVIP

本设计的原始依据为石桥头隧道设计说明书。利用新奥法的施工方法结合本隧道实际

水文地质条件，科学合理的进行设计。本隧道段为Ⅴ级围岩，中间段为Ⅲ级围岩，

采用台阶法开挖。支护结构选用复合式衬砌，充分发挥围岩自身的承载能力。衬砌结构计

算采取浅埋隧道的计算，将侧向力视为均不。钻爆设计采用光面，根据围岩

级别、选用合理设计孔的位置和数目。施工组织设计采用三班工作制，两班一循环，

根据工程类比法确定个工序所用时间。辅助作业详细规定了关于通风、给排水、装渣、

等工作的具体要求，确保整个施工过程顺利安全地进行。概预算以每米隧道为单位，

大致计算了整个工程造价。

：台阶法；复合式衬砌；辅助作业；概预算

Theoriginalbasisofthisdesigndocumentisthestonebridgeheadtunneldesignspecification.

Byusingthenewmethodofconstructionmethodincombinationwiththepractical

hydrogeologicalconditionsofthetunnel,justdothescientificandreasonabledesign.Theentrance

regionofthetunnelisⅤlevelofsurroundingrock,themiddlesectionofthetunnelisⅢ

level,sothetunnelwacavatedwiththelayer-stepmethod.Choosecompositeliningas

supportingstructure,givefullplaytoitsbearingcapacityofsurroundingrock.Takeashallow

buriedtunnelliningstructuretocalculatetheformulaofthelateralforceasnopressure.Using

smoothblasting,drillingandblastingdesignaccordingtothelevelofsurroundingrock,choose

thereasonabledesignofexplosiveholelocationandnumber.Constructionorganizationdesignuse

threeshifts,twoclassesofacycle,accordingtotheengineeringanalogymethodusedtodetermine

aprocesstime.Auxiliaryoperationplandetailedrulesaboutventilation,watersupplyanddrainage,

thespecificrequirementsofthemuck,transportation,etc,toensurethatthewholeconstruction

processsmoothlyandsecurely.Thebudgetinpermetertunnel,tocalculatethewholeprojectcost.

Keywords:layer-stepmethod;comp