Calculation model of pipeline resistance for cemented paste backfill considering thixotropy

Chang, Yingjie; Zhang, Youzhi; Gan, Deqing; Wang, Xinyi; Du, Shuangcheng

doi:10.24425/ams.2022.141460

Artykuł - szczegóły

Tytuł artykułu

Calculation model of pipeline resistance for cemented paste backfill considering thixotropy

Autorzy

Chang Yingjie , Zhang Youzhi , Gan Deqing , Wang Xinyi , Du Shuangcheng

Treść / Zawartość

Pełne teksty:

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Identyfikatory

DOI

10.24425/ams.2022.141460

Warianty tytułu

Języki publikacji

Abstrakty

The rheological behaviour of cemented paste backfill (CPB) has an important influence on the stability of its transportation in pipelines. In the present study, the time-dependent rheological behaviour of CPB was investigated to elucidate the effects of time and solid content. Experimental results showed that when CPB is subjected to a constant shear rate, the shear stress gradually decreases with time before finally stabilis ing. When the solid content was 60%~62%, a liquid network structure was the main factor that influenced the thixotropy of CPB, and the solid content had less influence. When the solid content was 64%~66%, a floc network structure was the main factor that influenced the thixotropy of CPB, and the solid content had a more significant influence on the thixotropy than the shear rate. The initial structural stability of CPB increased with the solid content, and this relationship can be described by a power function. Based on the experimental results, a calculation model of pipeline resistance considering thixotropy was proposed. The model was validated by using industrial experimental data. The current study can serve as a design reference for CPB pipeline transportation.

Słowa kluczowe

thixotropy cement paste backfill pipeline transportation calculation model hydraulic gradient

tiksotropia rurociąg gradient hydrauliczny

Wydawca

Instytut Mechaniki Górotworu PAN

Czasopismo

Archives of Mining Sciences

Rocznik

2022

Tom

Vol. 67, no. 2

Strony

303--316

Opis fizyczny

Bibliogr. 42 poz., tab., wykr.

Twórcy

autor

Chang Yingjie

North China University of Science and Technology, College of Mining Engineering, China

https://orcid.org/0000-0001-6156-4166

autor

Zhang Youzhi

zhangyouzhi@ncst.edu.cn

North China University of Science and Technology, College of Mining Engineering, China

https://orcid.org/0000-0003-1377-1675

autor

Gan Deqing

North China University of Science and Technology, College of Mining Engineering, China

https://orcid.org/0000-0003-3849-8724

autor

Wang Xinyi

North China University of Science and Technology, College of Mining Engineering, China

https://orcid.org/0000-0003-3261-6961

autor

Du Shuangcheng

North China University of Science and Technology, College of Mining Engineering, China

https://orcid.org/0000-0003-1377-1675

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-9c29b85b-9d0b-4fd4-917b-6492fb6ad115