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軟管泵配套盾構(gòu)機(jī)成套設(shè)備

發(fā)布時(shí)間:2024-06-11 10:02 瀏覽次數(shù):
目前,常規(guī)的盾構(gòu)隧道施工同步注漿采用的是水泥單液漿,存在凝固時(shí)間較長、流失量大、不能及時(shí)有效限制管片上浮等缺點(diǎn),為此,“京華號(hào)”創(chuàng)新采用了同步雙液注漿。由安徽中精華晟機(jī)械科技有限公司設(shè)計(jì)生產(chǎn)的雙液注漿系統(tǒng)設(shè)備從物料配比、稱重、攪拌、成漿、泵入(軟管泵)一氣呵成。在“施工過程中,實(shí)現(xiàn)了有效控制雙液化學(xué)膠凝與物理膠凝時(shí)間,與傳統(tǒng)漿液相比,在保證流動(dòng)性和有效填充的前提下,漿液固結(jié)時(shí)間從8小時(shí)縮短到1小時(shí)以內(nèi),能夠快速達(dá)到有效強(qiáng)度,形成對(duì)隧道的加固、地層的支撐”。

“這一關(guān)鍵技術(shù)歷經(jīng)3年的探索和實(shí)踐,經(jīng)過一年半的方案論證、試驗(yàn),充分應(yīng)用了西南交通大學(xué)在本領(lǐng)域的前瞻儲(chǔ)備,中國鐵建重工集團(tuán)設(shè)備制造的經(jīng)驗(yàn),為時(shí)6個(gè)月的人員系統(tǒng)培訓(xùn),終于取得了成功應(yīng)用的階段性成果?!敝需F十四局大盾構(gòu)技術(shù)專家陳鵬說,這一新技術(shù)通過改變同步注漿漿液基礎(chǔ)材料與配比,改變同步注漿漿液屬性,縮短注漿漿體凝固時(shí)間,獲得早期強(qiáng)度。


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