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随着地下空间开发需求的持续高涨,盾构工法已越来越成为一种主要的施工方法。但是由于各地区土层特性的差异,反映在盾构机工作参数的变化上也不尽相同,所以,很有必要开展盾构机工作参数针对特定地层的适应性研究。为此,以上海地区的粉砂地层为参照原型,将相似理论和模型试验的方法成功地应用于盾构模型试验方案的设计;在此基础上,进行了不同地层条件下,盾构机不同工作参数组合的掘削试验,并通过对试验结果的分析,得出了一些有益的结论,从而能更好地为盾构适应土层性质服务。
As the demand for the development of underground space continues to rise, the shield construction method has increasingly become a major construction method. However, due to the differences of soil characteristics in different regions, reflecting the changes in the working parameters of the shield machine are not the same, so it is necessary to conduct research on the suitability of shield machine working parameters to specific strata. Therefore, taking the silt strata in Shanghai as the reference prototype, the similar theory and model test methods are successfully applied to the design of the shield model test plan. Based on this, different shields are made under different formation conditions Working parameters combination of digging test, and through the analysis of test results, and draw some useful conclusions, which can better serve the nature of the shield to adapt to the nature of the soil.