赵庄煤矿新回风立井施工方案比选

Comparison Collection on Construction Alternatives of New Mine Air Returning Shaft in Zhaozhuang Mine

赵庄煤矿新回风立井设计净直径8.6m,井深428.35m,工期要求为330d。对该井筒3种可行的施工方案进行了比选,确定了最佳方案,即地面预注浆,反井钻井刷大。该施工方案月成井可达150m以上,成本比普通法施工降低1/3左右;且施工安全,操作简单,设备移动方便,劳动强度低,效率高。该井筒采用该方案施工后,实现了安全、优质、快速施工,实际工期比计划工期提前了10d,取得了较好的效果。

A designed net diameter of a new mine air returning shaft in Zhaozhuang Mine was 8.6m,a depth of the mine shaft was 428.35 m and a construction period required was 330 days.A comparison collection was conducted on the three feasible construction alternatives of the mine shaft,an optimized alternative was determined and was pre-grouting at the surface ground and reaming of raise boring.The month shaft completed rate of the construction alternative would be over 150 m and the cost could be reduced by about 1/3lower than conventional construction method.The construction alternative could have a safety construction,simple operation,easy equipment movement,low labor intensity and high efficiency.When the construction alternative applied to the construction of the mine shaft,a safety,excellent quality and rapid construction were realized,an actual construction period was 10 days earlier than the schedule construction period and a good effect was obtained.