黄土地区地铁竖井转横通暗挖施工稳定性的探究

在黄土地区地铁竖井转横通暗挖施工中,普遍采用“先竖井后横通”及“竖井-横通并行”两种施工方案,优缺点和施工稳定性各不相同,需要结合黄土地区地质情况选择对应施工方案。本文以西安15号线神舟二路站工程案例为背景,结合该黄土地区地质情况,对地铁竖井转横通暗挖施工方案进行探究,并根据施工稳定性数值试验分析提出稳定性好的施工方案,为同类型施工提供一定参考和建议。

Study on the Stability of the Underground Excavation of the Subway Shaft in the Loess Area

In the construction of underground excavation of subway shaft in loess area,the two construction schemes ofshaft first and then transverseandshaft-horizontal parallelare generally adopted.The advantages and disadvantages and construction stability are different,and loess needs to be combined.Select the corresponding construction plan for the geological conditions of the area.Based on the engineering case of Shenzhou 2nd Road Station on Xi'an Line 15 and the geological conditions of the loess area,this paper explores the construction plan of underground excavation of the subway shaft to the horizontal tunnel,and proposes a stable construction plan based on the numerical test analysis of construction stability.To provide certain references and suggestions for the same type of construction.