低渗性不良地质体化学灌浆浸润渗透能力动力学研究

The grouting reinforcement of hypotonic defective geology such as rock fault fracture zone and siltized intercalation has been one of the technical problems of hydraulic structure engineering research. Through decades of research, there are still many problems to be studied about hypotonic adverse geological grouting , despite some achievement has been made. This research application of infiltration capacity dynamics about chemical grouting of hypotonic adverse geology is one of the key technologies. In this study, the multi-interdisciplinary and integrated, comprehensive research tools, and analysis of the rheological properties of the chemical grouting material have been used to establish the model of the rheological law; combined with on-site adverse geological sketch of the geological body data, establish a solid model of the laboratory; two kinds of working conditions of hydrostatic and hydrodynamic are loaded on the solid model, studied hypotonic adverse geological entity model infiltration penetrating effect by the means of multi-scale test.On the basis of these studies, combined with the research of a solid model of the laboratory, the infiltration mechanism of chemical slurry against the low permeability adverse geology has been studied, and the infiltration dynamics model has also been established. Through these studies, we explored the chemical slurry rheological properties, the relations and the law of adverse geological body dynamics and infiltration capacity, in order to provide new scientific material and theoretical basis to the chemical slurry formulations designed and grouting process control.

岩石断层破碎带及泥化夹层等低渗性不良地质体的加固灌浆一直是水工建筑物工程研究的技术难题之一。通过几十年研究，虽取得一些成果，但对低渗性不良地质体的灌浆处理仍有很多课题亟待研究，如本次申请的对于低渗性不良地质体化学灌浆浸润渗透能力动力学的研究就是其中难题之一。本研究利用多学科交叉与集成、研究手段综合，通过对化学灌浆材料的流变特性的分析，建立流变规律模型；结合现场不良地质体地质素描资料，建立试验室实体模型，将静水和动水两种工况条件分别加载于实体模型上，利用多尺度测试手段对低渗性不良地质体实体模型浸润渗透效果进行研究；结合试验室实体模型及浸润渗透效果的研究，从动力学方面研究化学浆液对低渗透性不良地质体的浸润机理，建立浸润渗透动力学模型。通过以上研究，探索化学浆液流变特性、不良地质体和浸润渗透能力动力学的关系和规律，为化学浆液的配方设计和灌浆工艺控制提供新的科学研究素材和理论依据。

岩石断层破碎带及泥化夹层等低渗性不良地质体的加固灌浆一直是水工建筑物工程研究的技术难题之一。经过多年研究，虽取得一些成果，但对低渗性不良地质体灌浆处理仍有很多课题亟待研究，如对低渗性不良地质体化学灌浆浸润渗透能力动力学的研究就是其中难题之一。. 本项目研究了在不同温度下CW环氧浆液粘度时变性以及浆液反应动力学，揭示了化学浆液流变特性，建立了CW环氧浆液的流变模型和反应动力学模型；以室内配制的四种低渗性不良地质体作为研究对象，建立了实验室实体模型，研究了CW环氧浆液和其改性浆液在无水和有水条件下对低渗性不良地质体的浸润渗透效果，探讨了化学浆液在低渗性不良地质体中吸渗条件和浸润机理；在研究CW环氧浆液表面张力、接触角时变性的基础上，得出了基于粘度-时间指数函数的亲和力数学模型。通过以上研究，建立了CW环氧浆液浸润渗透动力学数学模型，揭示了浆液在不良地质体中的浸润渗透动力学关系和规律。本项目的成果为化学浆液的配方设计和低渗性不良地质体化学灌浆处理提供了理论依据。