长管棚在隧洞大塌方处理中的应用
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摘要
阐述了长管棚在小洞径隧洞中的应用。针对塌方量大、塌腔位置未知、塌方体松散的实际情况,采用塌方堆积体固结、长管棚超前支护、小导管超前预注浆、开挖采用超前小钢管的施工方法,使隧洞塌方的处理得以顺利解决,所采用的方法可供同类工程进行施工方法比选时参考借鉴。
This paper expounds the application of long pipe shed in small diameter tunnel. In view of the actual situation of large amount of collapse, unknown position of collapse cavity and loose collapse body, the construction methods of consolidation of collapse accumulation body, advance support of long pipe shed, advance grouting of small pipe and advance small steel pipe for excavation are adopted, so that the treatment of tunnel collapse can be smoothly solved. The methods adopted can be used as reference for selection of construction methods for similar projects.
This paper expounds the application of long pipe shed in small diameter tunnel. In view of the actual situation of large amount of collapse, unknown position of collapse cavity and loose collapse body, the construction methods of consolidation of collapse accumulation body, advance support of long pipe shed, advance grouting of small pipe and advance small steel pipe for excavation are adopted, so that the treatment of tunnel collapse can be smoothly solved. The methods adopted can be used as reference for selection of construction methods for similar projects.
引文
[1] 水利水电工程施工地质勘察规程,SL313-2004[S].
[2] 水利水电工程施工通用安全技术规程,SL398-2007[S].
[3] 水利水电工程施工组织设计规范,SL303-2004[S].
[4] 水利水电施工地质勘察规范,GB50487-2008[S].
[5] 水工建筑物地下开挖工程施工规范,SL378-2007[S].
[6] 水利水电工程锚喷支护技术规范,SL377-2007[S].
[2] 水利水电工程施工通用安全技术规程,SL398-2007[S].
[3] 水利水电工程施工组织设计规范,SL303-2004[S].
[4] 水利水电施工地质勘察规范,GB50487-2008[S].
[5] 水工建筑物地下开挖工程施工规范,SL378-2007[S].
[6] 水利水电工程锚喷支护技术规范,SL377-2007[S].