现代隧道技术
現代隧道技術
현대수도기술
MODERN TUNNELLING TECHNOLOGY
2014年
6期
173-178
,共6页
行星刀盘%顶管%切削试验%刀具优化%联络通道
行星刀盤%頂管%切削試驗%刀具優化%聯絡通道
행성도반%정관%절삭시험%도구우화%련락통도
Planetary cutterhead%Pipe-jacking%Cutting test%Optimization of cutting tools%Cross passage
目前盾构隧道联络通道主要采用土体加固暗挖法进行施工,但在复杂工况环境下仍存在极大施工风险。文章通过采用专门研制的行星刀盘方顶管对不同强度等级的混凝土试块进行全断面切削试验,对顶管刀具选型及布置、行星刀盘顶管切削性能等进行了研究,可为今后采用顶管法直接切削混凝土复合管片的盾构隧道联络通道的施工提供相应的技术储备,避免移除管片暴露加固土体,以大大降低盾构隧道联络通道施工风险。
目前盾構隧道聯絡通道主要採用土體加固暗挖法進行施工,但在複雜工況環境下仍存在極大施工風險。文章通過採用專門研製的行星刀盤方頂管對不同彊度等級的混凝土試塊進行全斷麵切削試驗,對頂管刀具選型及佈置、行星刀盤頂管切削性能等進行瞭研究,可為今後採用頂管法直接切削混凝土複閤管片的盾構隧道聯絡通道的施工提供相應的技術儲備,避免移除管片暴露加固土體,以大大降低盾構隧道聯絡通道施工風險。
목전순구수도련락통도주요채용토체가고암알법진행시공,단재복잡공황배경하잉존재겁대시공풍험。문장통과채용전문연제적행성도반방정관대불동강도등급적혼응토시괴진행전단면절삭시험,대정관도구선형급포치、행성도반정관절삭성능등진행료연구,가위금후채용정관법직접절삭혼응토복합관편적순구수도련락통도적시공제공상응적기술저비,피면이제관편폭로가고토체,이대대강저순구수도련락통도시공풍험。
The mining method with soil reinforcement is now mainly adopted in the construction of cross passages of shield tunnels, which is characterized by high risk and complex working conditions. In this paper, based on the adoption of a specially developed rectangular pipe-jacking machine with a planetary cutterhead, full-face cutting tests are carried out on concrete samples of different strength grades. Research on cutting-tool selection and layout, as well as the machinability of pipe-jacking with a planetary cutterhead, are undertaken, providing a technical reference for future cross-passage construction in shield tunnels adopting pipe-jacking to cut concrete composite segments, thereby refraining from exposing the reinforced soil mass due to segment removal, and greatly reducing the construction risk.