张贵金, 张聪, 梁经纬, 杨东升, 潘烨. 2016: 松软地层灌浆实验装置研制. 工程地质学报, 24(6): 1177-1181. DOI: 10.13544/j.cnki.jeg.2016.06.017
    引用本文: 张贵金, 张聪, 梁经纬, 杨东升, 潘烨. 2016: 松软地层灌浆实验装置研制. 工程地质学报, 24(6): 1177-1181. DOI: 10.13544/j.cnki.jeg.2016.06.017
    ZHANG Guijin, ZHANG Cong, LIANG Jingwei, YANG Dongsheng, PAN Ye. 2016: DEVELOPMENT OF LOOSE STRATA GROUTING EXPERIMENT DEVICE. JOURNAL OF ENGINEERING GEOLOGY, 24(6): 1177-1181. DOI: 10.13544/j.cnki.jeg.2016.06.017
    Citation: ZHANG Guijin, ZHANG Cong, LIANG Jingwei, YANG Dongsheng, PAN Ye. 2016: DEVELOPMENT OF LOOSE STRATA GROUTING EXPERIMENT DEVICE. JOURNAL OF ENGINEERING GEOLOGY, 24(6): 1177-1181. DOI: 10.13544/j.cnki.jeg.2016.06.017

    松软地层灌浆实验装置研制

    DEVELOPMENT OF LOOSE STRATA GROUTING EXPERIMENT DEVICE

    • 摘要: 灌浆模拟试验是确定灌浆工程参数,掌握各参数对灌浆效果影响规律的有效途径和方法。现有灌浆模拟实验装置没有集成因而不能模拟灌浆全过程,无法模拟受灌体挤密压缩条件下的围压边界,不能全面进行灌浆效果检测、评价等。本文通过分析、研究灌浆工艺及灌浆机理,研制了一种适用于松软地层的灌浆模拟实验装置,集成的系统可完整模拟不同灌浆方法的全过程。采用拆卸便捷的刚性高压容器装入多类型松软地层的受灌体,可模拟多孔(排)灌浆;紧贴其内壁的气囊,通过压力源的有效控制,可方便地模拟不同深度的地层围压环境;渗透性测试系统能提供可控水头,进行注水实验及灌后质量检测。功能验证结果表明,该装置能真实模拟现场灌浆全过程,可测得灌浆参数(灌浆压力、灌浆量)与灌浆效果(扩散距离、结石体性状等)之间的关系,为研究灌浆机理及灌浆设计施工参数奠定基础。

       

      Abstract: Grouting simulation test is an effective way for determining the grouting engineering parameters and revealing the impacts of various parameters on the grouting efficiency. Existing grouting simulation test devices are not integrated. Thus, they cannot simulate the whole grouting process and cannot represent the confining pressure boundary under the filling and compaction of the grouting body, and cannot detect and evaluate the grouting efficiency soundly. After analyzing the grouting technology and theory, an advanced grouting simulation test device is developed in this research for treating the loose strata. This new device is an integrated system and can completely simulate the whole processes under various grouting technique. The loosen strata is filled into the rigid disassemble high-pressure vessel for simulating multi-hole (row) grouting. Confining pressure environment that corresponding to the strata of different depth can be simulated by adjusting the pressure of the gasbag in the inner wall of the vessel. This new devise also provides controllable hydraulic head for water injection experiment and quality evaluation after grouting. Functional verification results demonstrate that this new device can simulate the whole field grouting process really. And, the relationship between grouting parameters (e.g.grouting pressure and grouting quantity) and the grouting efficiency (e.g.diffusion distance, physical properties, et al.) can also be measured during grouting simulation test. This new device makes a foundation for the research on grouting mechanism and the parameter design for field grouting operation.

       

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