浅埋暗挖法隧道施工过程地表沉降及洞室稳定性分析

Analysis of Surface Settlement and Cavern Stability During Shallow-Buried and Underground-Excavation Tunnel Construction

隧道施工具有一定的危险性和复杂性,需要加强预测分析,提高技术应用效果,避免在隧道施工过程中出现沉降超限、变形垮塌等事故。论文研究了浅埋暗挖法隧道施工过程地表沉降及洞室稳定性,从作用机理、破坏特点、影响因素等方面出发,分析了地表沉降及洞室失稳发生的过程,并结合多种理论研究成果,采用合适的分析技术方法,综合评价了地表沉降和洞室围岩变形危险等级,为设计、施工、组织管理等工作提供科学决策。

Tunnel construction has a certain degree of danger and complexity,and it is necessary to strengthen prediction analysis,improve the effectiveness of technical application,and avoid accidents such as settlement exceeding limits and deformation collapse during tunnel construction.This paper studies the surface settlement and cavern stability during the construction process of shallow buried tunneling method,analyzes the occurrence process of surface settlement and cavem instability from the aspects of action mechanism,failure characteristics and influencing factors,and comprehensively evaluates the surface settlement and the deformation risk level of cavern surrounding rock by combining various theoretical research results and adopting appropriate analytical techniques and methods.Provide scientific decision-making for design,construction,organization and management.