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《Shanxi Architecture》 2013-10
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The application of middle pilot heading method in Sandu tunnel holing-through construction

SHI You-hai REN Chang-zhen(Guiyang-Guangzhou Headquarters,China Railway Tunnel Group Limited Company,Duyun 558000,China)  
Combining with the geological conditions after Sandu tunnel holing-through,this paper analyzed and compared the bench method,middle pilot heading method,side heading hole method three kinds of construction methods,emphatically elaborated the middle pilot heading construction method from blasting design,supporting measures,personnel,machine arrangement and other aspects,the fact proved that the method had wide adaptability,resistance high safety.
【CateGory Index】: U455.4
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