地层空洞对城市隧道施工的支护结构的影响以及相关规律研究

Study on Influence of Stratum Cavities onSupport Structure of Urban Tunnel Construction and Related Laws

地层空洞的地质问题,对于城市地铁施工中较为常见的地质灾害,针对其造成的工程问题,结合国内外的类似工程的施工经验,并结合地质超前预报,采用超前工程加固措施技术的组织设计,并对加固措施后隧道变形进行监测,并结合数值计算软件对未施工的加固工程进行模拟计算,对空洞对于隧道围岩变形影响进行分析其变形与加固的关键点,并针对加固技术的效果进行模拟计算,从工程监测与数值模拟两个方向,分析空洞在加固前、加固后的隧道变形影响规律,并针对工程进行有效的优化加固措施,形成了针对地下空洞工况下加固技术及优化措施,并为此类工程的参考并推广。

Hole formation geological problems,the more common geological disasters in urban subway construction,aiming at the engineering problem,in this paper,combining with the experience of similar project construction at home and abroad,and combining with the geological advanced prediction,USES the advanced engineering technology of reinforcement measures of organizational design,and the reinforcement measures after the tunnel deformation monitoring,and combined with numerical calculation software for the construction of simulated calculation,reinforcement engineering analysis of hole for tunnel surrounding rock deformation effect its deformation and reinforce the key points,and the effect of the reinforcement technique for simulation calculation,from engineering monitoring and numerical simulation of two direction.This paper analyzes the influence law of tunnel deformation before and after reinforcement,and carries out effective optimization reinforcement measures for the project,and forms the reinforcement technology and optimization measures for the underground caving condition,which is the reference and promotion for this kind of project.