公路隧道Ⅴ级围岩施工安全步距分析与探讨

Analysis and Discussion on Safety Steps of Ⅴ-class Surrounding Rock Construction in Highway Tunnel

以云南澄江至江川双向4车道高速公路禄充特长隧道工程施工实践为例,分析公路隧道Ⅴ级围岩地段合理的施工安全步距,需既保证隧道初期支护的结构安全又能保证施工过程中人员机械设备之间的安全。介绍了施工过程中安全步距与施工作业之间的紧密关系及工艺要求,在如何保证施工安全的前提下确定合理的施工安全距离,通过现场工作面的实际长度宽度作详细的阐述,在不影响具体的施工作业情况下,需要多少安全步距才能保证整体施工安全又保证工效,以供同行参考,指在提高隧道施工管理水平及效率。

This article to yunnan chengjiang jiangchuan two-way four-lane highway to eloth extra-long tunnel engineering construction practice as an example,analysis of highway tunnelⅤlevel of surrounding rock of reasonable construction safety interval need how many meters,to ensure the safety of tunnel primary support structure,as well as ensure the safety of construction personnel in the process of mechanical equipment between.Introduces the construction process of safety interval with the close relation between the construction and technical requirements,on the premise of how to ensure construction safety to determine reasonable construction safety distance,through the field work,and detailed description of the actual length of the width,in does not affect the concrete construction cases,what safety interval to ensure the safety of the overall construction and to ensure efficiency and provide the reference for colleague,refers to the tunnel construction management level and efficiency.