柔性加筋注浆现场模型试验研究

Experimental research on horizontal flexible reinforced grouting with physical model

采用现场修筑实体模型试验结合室内土工试验的方法,全程、全断面、实时记录了模型试验中取得的大量数据,研究了预铺柔性管加筋注浆新技术在一定注浆施工工艺参数条件下水平柔性花管注浆实现机制、注浆施工工艺特性及注浆加固范围和效果。文中重点介绍了预铺水平柔性加筋注浆管现场模型试验的试验设计、模型修筑方案及制作、试验测试内容和研究方法。试验结果表明,预铺水平柔性加筋注浆新技术施工工艺简单、加固效果良好,具有很好的开发利用价值。同时,现场大型单点模型试验与现场实际施工条件基本一致,试验所得成果和施工参数能够直接用于实际施工,对回填加固类似工程采用本新技术施工具有一定的借鉴和指导作用。

The mass data in whole process of physical model test were real-time recorded; and the implementing mechanisms, reinforcement efficiency, construction technology of new horizontal flexible reinforced grouting technology were studied with physical model test in field. This paper focuses on the test design, manufacture scheme of model, testing method and research methods of experimental research. The test results show that the new horizontal flexible reinforced grouting technology contains enormous advantages including easy processing, effectiveness, and development and utilization value. It is indicated by the results of the experiment that the test results combining with the theoretical calculation have the guiding meaning for modifying the designing parameters. Meanwhile, the test results and construction parameters of the new technology can be used in real design and similar engineering for the test conditions of model test are basically in consistence with the conditions of actual operation.