重庆大学学报2026，Vol.49Issue(5)：78-93,16.DOI:10.11835/j.issn.1000-582X.2026.05.006
不同pH混合液与碎屑共存条件下岩石顶管摩擦特性研究
Frictional behavior of rock pipe jacking in mixed solutions of varying pH with coexisting debris
摘要
Abstract
Previous studies have indicated that the sudden increase in jacking force and pipe sticking in the Guanjingkou rock pipe jacking project is closely associated with mud cake formation from crushed debris.To address this issue,acidic and alkaline solutions are applied on-site to corrode the mud cake and restore jacking progress.However,during the rainy season,these solutions may be transported backward by rainwater,potentially affecting subsequent pipe sections.To investigate whether the coexistence of karst water and acid and alkaline cleaning solutions influences the frictional characteristics of subsequent pipe sections,this study combines indoor direct shear tests,scanning electron microscopy(SEM),and field monitoring.The frictional characteristics at the pipe-rock interface under different pH conditions and debris mixing scenarios are systematically investigated,and the effects of key factors on the friction coefficient are analyzed.By comparing predictions from the experimental model with field monitoring data,the reliability of the results is verified.The findings provide a theoretical foundation and practical guidance for friction control and pipe sticking mitigation in karst environments.关键词
岩石顶管/岩溶水/顶力突增/混合比/粒径级配Key words
rock pipe jacking/karst water/pipe sticking/solid liquid ratio/particle size distribution分类
建筑与水利引用本文复制引用
周文才,李超,刘新荣,钟祖良..不同pH混合液与碎屑共存条件下岩石顶管摩擦特性研究[J].重庆大学学报,2026,49(5):78-93,16.基金项目
国家自然科学基金青年基金项目(52208391) （52208391）
国家自然科学基金面上项目(52474092) （52474092）
贵州大学博士基金项目(2021-78).Supported by the Young Scientists Fund of the National Natural Science Foundation of China(52208391),the National Natural Science Foundation of China General Program(52474092),Doctoral Foundation of Guizhou University(2021-78). （2021-78）
