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Banji Coal Mine Auxiliary Shaft Borehole Law to Sinking Law Change
Author(s): 
Pages: 71-73
Year: Issue:  12
Journal: Coal

Keyword:  钻井法凿井法工序转换安全快速;
Abstract: 板集煤矿副井井筒表土段由华煤特殊凿井有限公司采用钻井法施工,基岩段由中煤一建四十九处采用普通凿井法施工.表土段钻井法施工完成后,需进行工序转换,工序转换包括:钻井段井壁壁后充填质量检查、补注浆、井壁底探水卸压、井壁底(锅底)破除、接荐处壁座及支撑圈浇筑等,工序转换结束后,方可采用凿井法施工基岩段.因此,安全高效的工序转换是进入基岩段施工的基础.
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