黏度时变性注浆材料流动特性与应用研究

发布时间：2018-06-03 14:18

本文选题：黏度时变性浆液 + 流动特性　；参考：《岩土力学》2017年12期

【摘要】：浆液的流动性对于浆液的扩散与运移具有重要的影响。通过开展黏度时变性注浆材料流动性正交试验,并选择不同可泵时间黏度时变性浆液进行流动度测试,分析了水灰比、外掺剂对浆液流动性能的影响规律,揭示了黏度时变性浆液流动度时间变化特征,从外掺剂对浆液水化硬化影响基础上,对浆液的流动变化机制性进行了探讨,并以碎裂岩体注浆为例,研究浆液流动性在注浆中的应用。研究结果表明:对于浆液的流动度的影响,随着水灰比、助剂1~#、助剂2~#、助剂3~#量的增加,浆液的流动度增加,水灰比是影响流动度的最大的因素,其次为助剂2~#、助剂3~#、助剂1~#;对于浆液黏度的影响主次关系为助剂3~#、助剂1~#、水灰比、助剂2~#;浆液流动度的变化具有缓慢期、快速期、稳定期3阶段特征,浆液临近可泵时间时,浆液流动度变化具有显著的突变性。碎裂岩体注浆应用结果表明:运用浆液的黏度时变特性进行注浆,减少了普通水泥浆待凝、复灌所带来的工时延长,缩短了注浆时间,节省注浆材料。
[Abstract]:The fluidity of the slurry has an important influence on the diffusion and migration of the slurry. Through the orthogonal test of the viscosity of the grouting material and the selection of the flow degree of the denatured slurry when the time viscosity is different, the water cement ratio and the effect of the admixture on the fluidity of the slurry are analyzed, and the denatured slurry flow in the viscosity is revealed. On the basis of the effect of the admixture on the hydration and hardening of the slurry, the mechanism of the flow change of the slurry is discussed. The application of the slurry fluidity in the grouting is studied with the grouting of fractured rock mass as an example. The results show that the effect of the fluidity on the slurry, with the water cement ratio, the auxiliary 1~#, the auxiliary 2~#, and the 3~# amount of the additive. In addition, the flow degree of slurry is increased, water cement ratio is the biggest factor affecting the fluidity, followed by auxiliary 2~#, auxiliary 3~#, auxiliary 1~#; the main and secondary relation of the viscosity of slurry is 3~#, 1~#, water cement ratio, 2~#; the change of slurry fluidity has slow, rapid and stable 3 stages, and the slurry near the pump time The grouting application results of the fractured rock mass show that the grouting with the time variation characteristic of the slurry viscosity reduces the pending of ordinary cement slurry, prolongs the work time brought by the complex irrigation, shortens the time of grouting and saves the grouting material.
【作者单位】：成都理工大学地质灾害防治与地质环境保护国家重点实验室;
【基金】：国家自然科学基金项目(No.40402025) 地质灾害与地质环境保护国家重点实验室团队重点课题(No.SKLGP2014Z001)~~
【分类号】：TQ172.1

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