通过对喷锚支护与土钉墙受力及作用机理的分析,揭示了由于土钉墙能充分利用土体的自承能力的特点,与喷锚支护相比,造价低,施工方便;与“刚”性支护相比,柔性支护的变位与时效作用,其受力更合理。因此,条件允许的情况下,采用“土钉墙”等柔性支护,可以大大节省投资。 By analyzing the force and mechanism of spray anchor support and soil nailing wall, it is revealed that the soil nailing wall can make full use of the self - bearing capacity of soil so that it has the advantages of low cost and convenient construction compared with spray anchor support. Compared with the “rigid” support, the flexible support's displacement and aging effect, its force more reasonable. Therefore, the conditions permitting, the use of “soil nail wall ” and other flexible support, can greatly save investment.