土压平衡式矩形顶管施工中的浆液配制与注入技术

Slurry Preparation and Injection Technology in Earth Pressure Balanced Rectangular Pipe Jacking Construction

顶管机土仓内的土体改良及管节周边触变泥浆的注入对顶管施工的顺利进行至关重要,再者,固结浆液的置换可确保顶管贯通后的使用阶段不会发生大变形及渗漏水,因此,对顶管施工中的浆液配制与注入管理必须加强。结合实际案例,阐述了土压平衡式矩形顶管施工过程中所涉及的浆液配制与注入技术,验证了顶管施工注浆后的效果,为同类工程提供了参考依据。

The soil improvement in soil bin of pipe jacking and the thixotropic mud injection around pipe joints are very important for the smooth construction of pipe jacking,and furthermore,the replacement of consolidation slurry can ensure that no large deformation and leakage of water occur during the service stage after completion of pipe jacking.Therefore,the slurry preparation and injection management in pipe jacking construction must be strengthened.Combined with practical cases,the slurry preparation and injection technology involved in the construction of earth pressure balanced rectangular pipe jacking are expounded,and the effect of grouting after pipe jacking is verified,which provides a reference for similar projects.