反井钻凿大孔径煤仓正向施工技术应用

采用反井钻机凿出大口径钻孔,然后利用大口径钻孔进行刷大至设计断面,这种施工方法即减少了以往从下部向上施工而造成的危险性,还能缓解由于通风不畅而造成危险性,极大的降低劳动强度,减少煤仓施工事故多发的局面,是目前国内较先进的煤仓施工方法,为下一步施工提供了经验。

The construction method of firstly drilling a big diameter hole with raise boring machine and then excavating the hole to satisfy the design requesting reduces the risk which is caused by the construction from lower to upper.And the method reduces the risk caused by bad ventilation and greatly reduces the labor strength.The numbers of accident caused by construction of coal bin can decrease.It is the more advanced method of construction of coal bin in China.The paper gives some experiments for the future construction.