盾构隧道同步注浆浆液配比分析及优化设计--《隧道建设》2009年S2期

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盾构隧道同步注浆浆液配比分析及优化设计水利论文*Nqk&d0s5}

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5E[Jg k5Pfm0【摘要】:为使盾构隧道同步注浆浆液具有较高的工作性能,通过掺加纯碱、木钙等措施,对浆液的配比进行了优化,并采用正交设计的方法进行试验,探讨了水胶比、粉灰比、膨水比、纯碱和木钙掺量、水泥用量对于浆液性能的影响,提出了优化后的浆液配比,为今后类似工程提供参考。

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*E ^!Ng^f0\0【作者单位】:水利论文h.?pE$oJ

lO)R#@5y$Qb+S0中国中铁隧道集团有限公司工程试验中心;水利论文GvDm$_$lAYR

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盾构法 同步注浆 正交试验设计 纯碱 木钙

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2C5YI-K|q(A00前言盾构法同步注浆就是在隧道内将具有适当的早期及最终强度的材料,通过注浆泵及盾尾的注浆管,按规定的注浆压力和注浆量在盾构推进的同时填入盾尾空隙内,从而有效控制地面沉降,确保管片的早期稳定,并形成衬砌防水的第一道防线[1]。因此,盾构法同步注浆工艺要求浆液具有较水利论文^6^&|xU?z\Ml

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