Grouting sealing method of flow-control speed-down in karst pipelines and its engineering application

doi:10.1016/j.tust.2020.103695

	Grouting sealing method of flow-control speed-down in karst pipelines and its engineering application
	Li, Haiyan 3; Liu, Jie 3; Wu, Jing 1,2; Xu, Zhenhao 3; Zhang, Xiangyu 1; Zhang, Lewen 1; Li, Zhaofeng 3
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2021-02-01
卷号	108 页码:11
关键词	Karst pipelines Dynamic water sealing Flow-control speed-down Numerical simulation Model test
ISSN号	0886-7798
DOI	10.1016/j.tust.2020.103695
英文摘要	For the large-flow and high-speed dynamic water sealing problem in karst pipelines, the dynamic water sealing mechanism under flow-control speed-down conditions is researched systematically by numerical calculation, model test and engineering application. Firstly, numerical simulation for the dynamic water turbulent flow in the pipeline is conducted under different water heads and flow rates. The change laws of flow velocity and pressure are analyzed during the flow-control speed-down. Secondly, the flow-control speed-down test for dynamic water in the pipeline is carried out using the self-developed karst pipeline model test system. The functional relation between the value opening and the flow velocity after flow-control in the pipeline is deduced, and the numerical results are supplemented and verified. Finally, the proposed dynamic water sealing method of flow-control speed-down is successfully applied to the water gushing treatment project of the China Resources Cement (Pingnan) Riverview Limestone Mine. The results show that: (i) As the degree of flow-control speed-down increases, the flow velocity in the pipeline decreases gradually and the pressure increases gradually. (ii) The flowcontrol speed-down test effectively reduces the flow velocity and increases the slurry retention rate in the pipeline. (iii) The large-flow and high-speed water inrush at the construction site is effectively treated, and the validity and applicability of the proposed method are verified, which have important guiding significance for the disaster treatment of large-scale water inrush in karst areas.
资助项目	National Natural Science Foundation of China[42007234] ; National Natural Science Foundation of China[41977222] ; China Postdoctoral Science Foundation[2019M652384] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z019009]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000606470000002
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25581]
专题	中科院武汉岩土力学所
通讯作者	Wu, Jing; Zhang, Lewen
作者单位	1.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250061, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Li, Haiyan,Liu, Jie,Wu, Jing,et al. Grouting sealing method of flow-control speed-down in karst pipelines and its engineering application[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2021,108:11.
APA	Li, Haiyan.,Liu, Jie.,Wu, Jing.,Xu, Zhenhao.,Zhang, Xiangyu.,...&Li, Zhaofeng.(2021).Grouting sealing method of flow-control speed-down in karst pipelines and its engineering application.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,108,11.
MLA	Li, Haiyan,et al."Grouting sealing method of flow-control speed-down in karst pipelines and its engineering application".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 108(2021):11.