Environment-friendly slurry prepared from seawater and used for seabed slurry shield tunnel

The invention belongs to the field of slurry shield construction application materials, and provides environment-friendly slurry for a seabed slurry shield tunnel, which is prepared from seawater and comprises the following components in parts by weight: 140 parts of bentonite, 10-40 parts of xanthan gum, 10-40 parts of flaxseed gum and 860 parts of seawater. The method is characterized in that seawater is adopted to replace traditional fresh water for slurry preparation, and green and environment-friendly salt-resistant additives, namely flaxseed gum and xanthan gum are used. The slurry disclosed by the invention can realize the effects of tackifying, resisting pollution and improving rheological behavior and physical stability of the slurry, and is beneficial to forming a high-quality mud film and maintaining the stability of an excavation surface; the method has the advantages of environment friendliness, convenience in local material utilization, engineering cost saving and fresh water resource saving. 本发