路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
4期
162-165
,共4页
交汇洞段%小净距%超大断面%施工技术
交彙洞段%小淨距%超大斷麵%施工技術
교회동단%소정거%초대단면%시공기술
intersection hole%neighborhood tunnel%super large-section%construction technology
以胶州湾海底隧道右线与匝道交汇洞段为背景,采用工程类比和数值模拟分析,对小净距隧道的施工顺序,超大断面隧道的开挖方法及支护参数进行了研究,结果表明：小净距隧道采用匝道先行,衬砌跟进,主隧采用CD法开挖可最大限度控制围岩塑性区;大断面洞段在进行超前注浆加固后,加强支护可实现台阶分部开挖。
以膠州灣海底隧道右線與匝道交彙洞段為揹景,採用工程類比和數值模擬分析,對小淨距隧道的施工順序,超大斷麵隧道的開挖方法及支護參數進行瞭研究,結果錶明：小淨距隧道採用匝道先行,襯砌跟進,主隧採用CD法開挖可最大限度控製圍巖塑性區;大斷麵洞段在進行超前註漿加固後,加彊支護可實現檯階分部開挖。
이효주만해저수도우선여잡도교회동단위배경,채용공정류비화수치모의분석,대소정거수도적시공순서,초대단면수도적개알방법급지호삼수진행료연구,결과표명：소정거수도채용잡도선행,츤체근진,주수채용CD법개알가최대한도공제위암소성구;대단면동단재진행초전주장가고후,가강지호가실현태계분부개알。
Taking intersection hole between right line and ramp of Jiaozhou Bay Subsea Tunnel as the background,the construction sequence of neighborhood tunnel,excavation method and supporting parameters of super large-section tunnel are studied in this paper through engineering analog and numerical simulation.The results show that first ramping and then lining for neighborhood tunnel with CD excavation method for the main tunnel can control the plastic zone of surrounding rock to the maximum extent;after pre-grouting reinforcement of super large-section tunnel,bench cut can be realized if strengthening support.
