CD法在软弱围岩隧道开挖中的应用探讨  

作　　者：李鹏华 

机构地区：[1]中交第三公路工程局有限公司

出　　处：《科技创新导报》2019年第14期37-38,共2页Science and Technology Innovation Herald

摘　　要：本文以广西乐百高速公路那现隧道为实例,那现隧道存在Ⅴ级破碎围岩,围岩特点是软弱,极易破碎,稳定性差。在隧道开挖施工时,易发生坍塌、围岩变形等状况。而通过开挖方式的选择,应用中隔壁法即CD法可以有效地解决软弱围岩开挖施工问题。本文通过那现隧道的工程实例,详细分析了CD法的应用,使得隧道施工安全性大大增加。This paper takes the existing tunnel of Leba Expressway in Guangxi as an example. There are V-class broken surrounding rocks in the naxian tunnel. The surrounding rock features are weak, extremely fragile and poor in stability.During tunnel excavation, it is prone to collapse and deformation of surrounding rock. Through the choice of excavation method, the application of the Center Diaphragm, can ef fectively solve the problem of excavation construction of weak surrounding rock.This paper analyzes the application of the Center Diaphragm in detail through the engineering example of the existing tunnel, which greatly increases the safety of tunnel construction.

关 键 词：CD法 软弱围岩 隧道开挖 

分 类 号：U455[建筑科学—桥梁与隧道工程]