5.1.1 Geological work for surrounding rocks of subsurfacestructures is composed of all excavation and the follow-up work offinal section formation. In case of full section excavation is adopted,the geological work may be completed in one operation.5.1.2 T (共 1112 字) [阅读本文] >>


说明: 本文档由创作者上传发布,版权归属创作者。若内容存在侵权,请点击