Test Method and Evaluation Index of Eco-Friendliness for Shield Tail Sealing Grease
With the rapid development of urban rail transit,shield consumables used in shield tunneling construction may affect the surrounding soil and water environment,which has attracted wide attention from all sectors of society.By selecting materials from natural plant or animal and using orthogonal experimental design method to optimize the formula,an eco-friendly type of shield tail sealing grease ANDR-P3 was developed.The test method and evaluation index of eco-friendliness for shield tail sealing grease were discussed.Based on the proposed test method,the acute toxicity test of zebrafish and outdoor test field experiment for different brands of shield tail sealing grease was performed to compare their eco-friendliness.The results show that the zebrafish mortality and effects on plant growth of self-developed eco-friendly shield tail sealing grease ANDR-P3 are significantly lower than those of similar products at home and abroad.Its eco-friendly performance has significant advantages.
shield constructionshield tail sealing greaseeco-friendlinessacute toxicity of zebrafish