Primary Support Tunnel Lining Structure Research The Loess Area

Under west country big development strategy policy actuation, west our country transportation infrastructure constructions and so on road, railroad, high-valence iron continues the vigorous development.West our country by the mountainous region, the basin primarily terrain characteristic, had decided in the executive project the big tunnel proportion,the research is suitable for the western loess area tunnel construction structure and the labor law, specially studies the initial period supports and protections lining work structure and the construction labor law appears extremely essential.This article through falls wet to the loess area the nature, the crustal stress changes quickly, easy to collapse, geological characteristic and so on jointing growth not rule analysis research; Easy to crack, the construction process after the loess area tunnel initial period lining work caves in big also non-uniform, the lining work easy to appear the cavity and so on easily to send plant disease origin the analysis research; Spurts the anchor initial period supports and protections lining work shotcrete and the loess to the present widespread application new Austria law in shuts tight the difference,the initial period supporting capacity slightly, the palm supporting plane security risk big, the shotcrete snapping back quantity big, the construction enters the ruler slightly and so on the craft serviceable analysis research, in view of spurts the anchor initial period supports and protections lining work structure in the loess region tunnel construction, the operation flaw,designs uses the mold to build the concrete, the steel centering, an anchor rod structure union supports and protections mold builds the initial period supports and protections lining work structural style.From aspects and so on construction security, operation safe, economic efficiency, project quality, construction progress, the ratio chose the tradition to spurt the anchor concrete initial period supports and protections lining work to build the concrete initial period supports and protections lining work two kind of labor method with a mold in the loess area construction good and bad points and the serviceability, and built the initial period supports and protections lining work labor method design idea, the structural style, the technological process, the loess region serviceability to a mold has carried on the elaboration,summarized a mold to build the initial period supports and protections lining work in the loess region tunnel application superiority.With emphasis elaborated in particular a mold builds thelining work trolley the design application, guaranteed the construction safely, sped up the construction progress, further manifested a mold to build the initial period supports and protections lining work structural style the superiority.The suggestion promotes a mold to build the initial period supports and protections lining work structural style to apply in the weak lithical adjacent formation, the special geological area five levels of above adjacent formations, the limestone cave concave growth area underground concealed work construction.