不銹鋼雙脹環(huán)工藝是專用于大口徑管(DN600或以上)道接口錯(cuò)位，滲漏的非開挖修復(fù)技術(shù)，具有設(shè)計(jì)合理、實(shí)用性強(qiáng)、修復(fù)質(zhì)量高、施工便捷、施工簡便、工期短、施工不受地面交通、環(huán)境溫度的影響等特點(diǎn)。

　　不銹鋼雙脹環(huán)工藝修復(fù)流程：根據(jù)管道的內(nèi)徑，首先在工廠定制不銹鋼壓條和橡膠條，然后進(jìn)入管道安裝，先手工固定橡膠條，接著通過擴(kuò)張器，用不銹鋼條壓住橡膠條，從而完成管道局部防滲修復(fù)，必要時(shí)還可以對(duì)管道滲漏處進(jìn)行注漿處理。

不銹鋼雙脹環(huán)工藝修復(fù)管徑選擇：

（1）內(nèi)襯鋼套環(huán)設(shè)計(jì)時(shí)，首先要確定原管道的管道直徑，確保鋼套環(huán)外徑被修復(fù)管道的內(nèi)徑之間的修正關(guān)系。（2）采用雙脹圈局部內(nèi)襯法施工時(shí)，鋼套環(huán)的設(shè)計(jì)制作寬度必須滿足修復(fù)管段缺陷處的中心長度。

（3）鋼套環(huán)內(nèi)襯管與舊管道一起組成復(fù)合管道使用，內(nèi)襯管設(shè)計(jì)壁厚滿足舊管道損壞地下水的滲漏壓力要求。

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