As the Earth Pressure Balanced Shield (EPBS) Tunneling is becoming comprehensive way to build the subway, foams as a good soil conditioning agent are widely used in EPBS.
随着土压平衡式盾构在我国地铁建设中的推广应用，气泡作为一种优良的土体改良剂，已经得到广泛的采用。
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Shield tunneling method has become a primary method in underground excavation with its predominance, earth pressure balanced shield tunneling (EPBS) is the most universal type in our country.