山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (5): 132-143.doi: 10.6040/j.issn.1672-3961.0.2024.041
• 土木工程 • 上一篇
王振军1,2,刘人太2*,张庆松2,惠冰1,2,陈孟军2,马晨阳2,李鸿钊1,2
WANG Zhenjun1,2, LIU Rentai2*, ZHANG Qingsong2, HUI Bing1,2, CHEN Mengjun2, MA Chenyang2, LI Hongzhao1,2
摘要： 为研究新型岩溶管道注浆材料(WIS新型注浆材料)在动水条件下的扩散规律,从注浆材料自身的物理化学性质出发,通过流变性能试验研究WIS新型注浆材料的浆液流型,建立基于黏度时空分布的函数方程,阐述混合物浆液在管道内运移的动态演化过程;借助COMSOL Multiphysics 数值模拟软件计算在不同注浆速率、管道直径、浆液粒径参数下浆液扩散形态随时间的变化特征,对比分析模拟试验中管道内速度场的演化规律。结果表明:WIS新型注浆材料为黏度时空变化型浆液;黏度时空分布状态下浆液的扩散运移过程中质点黏度不断增大,每相邻两个浆液质点的黏度随注浆扩散均各不相同,浆液质点的间距不断减小,扩散距离也不断减小;数值模拟计算结果显示:WIS新型注浆材料的扩散过程具有明显的非对称性,顺水扩散距离均随注浆扩散时间增大而增大,扩散距离与注浆速率成负相关关系,与管道直径、浆液粒径成正相关关系;注浆口下游管路流速与注浆扩散时间存在显著的负相关关系;数值模拟计算结果与模拟试验结果的速度场演化规律具有一致性,同时验证了在误差允许的范围内数值模拟规律的合理性。研究成果可为岩溶管道突涌水环境下的注浆参数设计提供可靠的理论依据及参考价值。
中图分类号:
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