隧道建设
隧道建設
수도건설
TUNNEL CONSTRUCTION
2015年
4期
342-349
,共8页
特长公路隧道%斜井%竖井%设计
特長公路隧道%斜井%豎井%設計
특장공로수도%사정%수정%설계
super-long highway tunnel%inclined shaft%vertical shaft%design
为解决特长公路隧道斜井、竖井设计中方案比选多、工作繁琐及技术要求高的难题,结合龙潭隧道、大坪山隧道、乌池坝隧道斜井和竖井设计实践,总结和研究斜井、竖井的布置,斜井、竖井方案的比选,斜井倾角与提升方案的选择,斜井与联络风道相交设计及竖井施工方案等关键技术。主要得出如下结论:1)斜井、竖井的布置应利用地形、地质条件,灵活设计;2)斜井、竖井方案比选需改变“竖井通风阻力小,优于斜井”的惯性思维;3)不应仅考虑施工便利而选择缓坡斜井,增加建设成本和运营通风费用;4)斜井与联络风道相交宜采用分岔布置式,虽结构复杂,但风流顺畅;5)反井法具有降低劳动强度和施工成本,提高机械化施工水平的优点。
為解決特長公路隧道斜井、豎井設計中方案比選多、工作繁瑣及技術要求高的難題,結閤龍潭隧道、大坪山隧道、烏池壩隧道斜井和豎井設計實踐,總結和研究斜井、豎井的佈置,斜井、豎井方案的比選,斜井傾角與提升方案的選擇,斜井與聯絡風道相交設計及豎井施工方案等關鍵技術。主要得齣如下結論:1)斜井、豎井的佈置應利用地形、地質條件,靈活設計;2)斜井、豎井方案比選需改變“豎井通風阻力小,優于斜井”的慣性思維;3)不應僅攷慮施工便利而選擇緩坡斜井,增加建設成本和運營通風費用;4)斜井與聯絡風道相交宜採用分岔佈置式,雖結構複雜,但風流順暢;5)反井法具有降低勞動彊度和施工成本,提高機械化施工水平的優點。
위해결특장공로수도사정、수정설계중방안비선다、공작번쇄급기술요구고적난제,결합룡담수도、대평산수도、오지패수도사정화수정설계실천,총결화연구사정、수정적포치,사정、수정방안적비선,사정경각여제승방안적선택,사정여련락풍도상교설계급수정시공방안등관건기술。주요득출여하결론:1)사정、수정적포치응이용지형、지질조건,령활설계;2)사정、수정방안비선수개변“수정통풍조력소,우우사정”적관성사유;3)불응부고필시공편리이선택완파사정,증가건설성본화운영통풍비용;4)사정여련락풍도상교의채용분차포치식,수결구복잡,단풍류순창;5)반정법구유강저노동강도화시공성본,제고궤계화시공수평적우점。
The design of the inclined shafts and vertical shafts of super-long highway tunnels is a complex work.In the paper,the construction technologies,including layout of inclined shafts and vertical shafts,selection of inclined shafts and vertical shafts,selection of angle and hoisting method of inclined shafts,design of connection section between inclined shaft and ventilation gallery,and the construction of inclined shaft,are summarized and studied,with the design of the inclined shafts and vertical shafts of Longtan tunnel,Dapingshan tunnel and Wuchiba tunnel as examples. Conclusions drawn are as follows:1)The landform and geological conditions are important factors to be considered in the selection of inclined shafts and vertical shafts.2)The conventional concept that the vertical shaft is superior to the inclined shaft due to the less ventilation friction in the shaft should be changed.3)It should be avoided that inclined shafts with gentle slopes are adopted only due to the convenience in construction,which may increase the construction cost and the operation ventilation cost.4)Fork-type connection,which,although complex in structure,is favorable for smooth air flow,should be adopted between the inclined shaft and the ventilation gallery.5)The labor working intensity and construction cost can be reduced,and the construction mechanization can be improved by using raise-boring method.