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一、方法概述气泡盾构施工是一种不同于泥浆压力盾构施工的新方法,它适用于从砂砾层到粘性土的广泛区域。这种施工法代替了原来在泥浆压力盾构法中以粘土和膨润土为主体的加泥材料,而在工作面及容器中注入刮脸用涂膏状的加固气泡,以便获得掘削时工作面的稳定,而且经过消泡作用,使排到砂土层中的气泡消失,掘出的土恢复到近似注入气泡前的状态。气泡盾构法具有以下特点: 1.在砂砾地基时,由于气泡的支承作用而提高了掘削土的流动性,并由于不堵塞容器而
I. Overview of the Method Bubble shield construction is a new method different from the construction of mud pressure shield. It is suitable for a wide range of areas from gravel to clay. This construction method instead of the original mud pressure shield method with clay and bentonite as the main plus mud material, and in the face and the container into the shaving paste with paste-like bubble reinforcement in order to get the mining face stability , And after the defoaming effect, the bubbles discharged into the sand layer disappear, and the excavated soil returns to the state before the injection of bubbles. The bubble shield method has the following characteristics: 1. In the gravel foundation, due to the support of the bubble to improve the mobility of digging soil, and because it does not block the container