动水条件下水泥浆液初始沉积运移规律研究  

Initial deposition migration law of cement slurry under hydrodynamic condition

作　　者：苏培莉[1] 李冲 贾毅飞 刘锋 SU Peili;LI Chong;JIA Yifei;LIU Feng(School of Architecture and Civil Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;JSTI Group Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054 [2]苏交科集团股份有限公司,江苏南京210000

出　　处：《煤炭工程》2023年第3期161-166,共6页Coal Engineering

基　　金：中国博士后科学基金面上资助项目(2017M623330XB);西安市岩土与地下工程重点实验室资助项目(XKLGUEKF20-03);陕西省自然科学基础研究计划资助项目(2018JM5126)。

摘　　要：为了研究突水巷道注浆后浆液颗粒的初始沉积位置及堆积形态,基于水泥离散颗粒与动水之间的耦合作用建立了浆液沉积运移理论模型;采用室内模型试验分析了浆液在管路中的初始扩散运移形态,探讨了浆液初始沉积位置与动水流速、水灰比和管路内径之间的联系。研究结果表明:浆液初始沉积位置与动水流速、水灰比及管路内径均呈正相关关系;动水流速对浆液初始沉积位置的影响大于水灰比和管路内径,且试验结果与理论模型计算结果相吻合。研究成果可为实际动水注浆施工中注浆行为开始时机的准确把握提供参考。In order to study the initial deposition position and accumulation form of slurry particles after grouting in water bursting roadway,a theoretical model of slurry deposition and migration was established considering the coupling between cement discrete particles and water.The indoor model test was used to analyze the initial diffusion and migration pattern of slurry in the pipeline,and the relationship between the initial deposition position of slurry and the hydrodynamic velocity,water-cement ratio and pipeline inner diameter was discussed.The results show that the initial slurry deposition position is positively correlated with the flow velocity,water cement ratio and pipeline diameter.The influence of hydrodynamic velocity on the initial deposition position of slurry is greater than that of water cement ratio and pipeline diameter,and the experimental results are consistent with the theoretical model calculation results.The research results can provide reference for accurately grasping the starting time of grouting behavior in the actual dynamic water grouting construction.

关 键 词：动水注浆 浆液扩散 突水巷道 浆液沉积运移 

分 类 号：TD745[矿业工程—矿井通风与安全]