在混凝土衬砌的背面或回填混凝土周边,对混凝土浇筑未能浇实留有空隙的部位的灌浆。灌浆可使一、二次混凝土体结合为整体,还可加固土体、回填空隙,共同抵御外力,防止渗漏,因此称为回填灌浆。回填灌浆的目的是对隧洞混凝土衬砌或支洞堵头顶部缝隙作灌浆填充。回填灌浆在衬砌混凝土达到设计强度的70%后,尽早进行。
...洞,塌方处理 , 回填灌浆 , 施工技术 [gap=1053]Key words of the tailrace tunnel, landslide treatment, backfill grouting, construction technology ...
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文章介绍了回填灌浆技术在支洞封堵中的应用,支洞回填灌浆的施工工艺、技术要求以及效果评价。
This paper introduces the application of the backfill grouting technique to block up the branch tunnel, the corresponding technology, technique request and result evaluation are given.
该工法包括回填和固结灌浆、管棚加固、控制爆破和喷锚等工序。
This method consists of the following procedures: backfill, consolidation grouting, reinforcing by the pipe and strut method, controlled blasting and anchor bars.
对大坝渗透用帷幕灌浆、回填混凝土进行处理。
For the seepage control of dam, the curtain grouting and back filled concrete have been adopted. Now the No.
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